Make an x and y table, and pick any values to plug in for x in the equation.
I will use the numbers from -2 to 2
Now plug in the values you picked for x into the equation to find its y-value
x = -2
y = 3x - 1 Plug in -2 for x
y = 3(-2) - 1
y = -6 - 1
y = -7
x = -1
y = 3x - 1
y = 3(-1) - 1
y = -3 - 1
y = -4
Do the same for the rest of the numbers, and graph each point and draw a line connecting them.
45 %of population of a town is female . what's the population of male if total population is 54320
Answer:29876
Step-by-step explanation:
Entire population is 100%
Male is 100%-45%
55%x54320=29876
Answer:
29,876 males
Step-by-step explanation:
If 45% of 54320 population is female. The population of male is calculated below.
The total population is 100% and female is 45%. Thus: 100% - 45% = 55%.
Percentage of male population is 55%. Hence, 55% of 54320 is calculated thus:
[tex] \frac{55}{100} \times 54320[/tex]
[tex] = 0.55 \times 54320[/tex]
[tex] = 29876[/tex]
Therefore, population of male if total population is 54320 is 29,876.
Check,
Female population percentage + male population percentage:
45% + 55% = 100%
24,444 + 29,876 = 54,320
The linear combination method gives a solution of (–4, 2) for which of these systems of linear equations?
3 x + 13 y = 14. 6 x + 11 y = negative 2.
4 x + 5 y = 12. 8 x + 3 y = negative 4.
5 x + 4 y = 12. 7 x + 8 y = 12.
10 x + 3 y = 8. 17 x + 6 y = 10.
Answer:
[tex]3x+13y=14\\\\6x+11y=-2[/tex]
Step-by-step explanation:
We have to check [tex](-4,2)[/tex] satisfies which system.
First System:
[tex]3x+13y=14\\\\6x+11y=-2\\\\Substitute\ (-4,2)\ in\ the\ equations\\\\3\times (-4)+13\times (2)=14\\\\-12+26=14\\\\14=14\\\\6\times (-4)+11\times (2)=-2\\\\-24+22=-2\\\\-2=-2\\\\(-4,2) \ satisfies\ this\ system\ of\ equation.\ Hence\ (-4,2)\ is\ the\ solution\ of\ this\ system.[/tex]
Second System:
[tex]4x+5y=12\\\\8x+3y=-4\\\\Substitute\ (-4,2)\\\\4\times (-4)+5\times (2)=-6\\\\-6\not=12\\\\(-4,2)\ does\ not\ satisfies\ the\ system\ hence\ it\ in\ not\ a\ solution\ of\ this\ system.[/tex]
Third System:
[tex]5x+4y=12\\\\7x+8y=12\\\\Substitute\ (-4,2)\\\\5\times (-4)+4\times (2)=-12\\\\-12\not =12\\\\(-4,2)\ does\ not\ satisfies\ the\ system\ hence\ it\ in\ not\ a\ solution\ of\ this\ system.[/tex]
Fourth System:
[tex]10x+3y=8\\\\17x+6y=10\\\\Substitute\ (-4,2)\\\\10\times (-4)+3\times (2)=-34\\\\-34\not =8\\\\(-4,2)\ does\ not\ satisfies\ the\ system\ hence\ it\ in\ not\ a\ solution\ of\ this\ system.[/tex]
Answer:
3x+13y=14\\\\6x+11y=-2
Step-by-step explanation:
what is the slope of a line that passes through the points (3,-6) and (0,-1)
Answer:
Step-by-step explanation:
[tex]\frac{-1+6}{0-3}\\\\\frac{5}{-3}\\ m = -1.6667[/tex]
The store offers a 20% discount. If the regular price of an item is x dollars, what is the discount price in dollars?
Answer:
3.28
Step-by-step explanation:
You want to find the discount price. Set a relation to where the well i cant really explain it but do 20/100 = x/16.40 because 100% of the price is 16.40 dollars. You want to find 20% of that so you find what you multiply to 100 to get 16.40 which is 6.0975. Then you do the same thing for the 20% to find 20% of the price which is 3.28. sorry im trash at explaining but i hope i helped.
Answer:
3.28
Step-by-step explanation:
im pretty darn sure this is right lol
Madison is riding her horse around the outside of a circular arena.she knows 14 laps is 1/2 a mile what is the diameter of the arena
Answer:
The diameter of the arena is 18.3 meters.
Step-by-step explanation:
As, 14 laps = [tex]\frac{1}{2}[/tex] mile
so, 1 lap = [tex]\frac{1}{28}[/tex] mile ( ∵14 × 2 = 28)
For the horse completing one lap it completes the perimeter of the circle.
perimeter (P) = [tex]\frac{1}{28}[/tex] mile
let diameter of that circle be represented as d,
P= [tex]\pi[/tex] × d
or, [tex]\frac{1}{28}[/tex] = [tex]\pi[/tex] × d
or, d= [tex]\frac{1}{28\pi }[/tex]
∴ d= 18.3 meters.
The diameter of the arena is 18.3 meters.
Find the total surface area for the figure to the nearest tenth
65.3 m^2
104.6 m^2
98.2 m^2
94.4 m^2
The answer is D. 94.4^2
((Hopefully I helped))
11. In 2007, the United States Mint
began circulating $1 coins with past
Presidents of the United States on
them. New $1 coins for 4 Presidents
are released each year. How many
years will it take for $1 coins to be
released for the first 36 Presidents?
Write a number sentence to
Answer:
if $1 coin is for 4 presidents ,then
the number of years it will take to release the the 36 first presidents is given by[tex]\frac{36}{4}=9 years[/tex]
Step-by-step explanation:
step 1: you lay down preliminaries
step 2: you divide 36 presidents by 4 presidents per year, the result is the number of years it will take to publish the first 36 presidents.
Which binomial is a factor of 49x2 + 84xy + 36y2?
A. 7x+ 6y
B. x-6y C. X+ 6y
D. 7x- by
Answer:
A. 7x + 6y
Step-by-step explanation:
49x² + 84xy + 36y²
Factoring the perfect square:
(7x + 6y)²
7x + 6y is a factor.
Final answer:
The correct binomial factor of the quadratic expression [tex]49x^2 + 84xy + 36y^2 \ is \ 7x + 6y[/tex], which corresponds to option A.
Explanation:
To determine which binomial is a factor of the quadratic expression [tex]49x^2 + 84xy + 36y^2,[/tex]we can try to factor the expression by grouping or using the factoring technique of a perfect square trinomial. On inspection, we see that 49, 84, and 36 are all multiples of 7, and also the expression resembles the square of a binomial.
The given expression can be written as:
[tex](7x)^2 + 2(7x)(6y) + (6y)^2[/tex]
This is the expanded form of the square of a binomial:
[tex](7x + 6y)^2 = 49x^2 + 84xy + 36y^2[/tex]
Hence, the factored form of the given expression is [tex](7x + 6y)^2[/tex], which means that 7x + 6y is indeed a factor. So, the correct answer is option A.
Please do 24 26 28 30
Answer:
its increasing by 2,u can think of it as taking away the 2 in the ones place and skip counting by 2 like your in the ones place
what is the value of 1-2/3*4+5=
A rocket is travelling at a speed of 21,000 miles per hour (mph). Use the fact that 1 km is approximately equal to 0.6214 miles to convert this speed to kilmeters per hour (km/h
Answer:
33,793.2 Kilometers per hour :3
Speed of rocket in kilometer in 13,049.4 miles
Speed in miles:Given that;
Speed of rocket = 21,000 miles per hour
Miles in 1 kilometer = 0.6214 miles
Find:
Speed of rocket in kilometer
Computation:
Speed of rocket in kilometer = Speed of rocket × Miles in 1 kilometer
Speed of rocket in kilometer = 21,000 × 0.6214
Speed of rocket in kilometer = 13,049.4 miles
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What is x divided by y
Answer:
X/Y
Step-by-step explanation:
You cannot divide two variables so you just leave it as a fraction
The result of division, when, x divided by y is: x/y.
Here, we have,
given that,
What is x divided by y
i.e. now, we have to divide x by y
so, we get, x is the dividend, and y is the divisor,
so, x = numerator
and, y = denominator
we know that,
we cannot divide two variables so we just leave it as a fraction
i.e. we get,
x divided by y = x/y
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Please Help
A line has a slope of Negative three-fourths and passes through the point (–5, 4). Which is the equation of the line?
y = negative three-fourths x + one-fourth
y = negative three-fourths x + 4
y = negative three-fourths x minus 2
y = negative three-fourths x minus one-fourth
The equation of the line is [tex]y=-\frac{3}{4}x+\frac{1}{4}[/tex]
Step-by-step explanation:
The equation of a line can be written using the following form
[tex]y-y_0 = m(x-x_0)[/tex]
where
m is the slope of the line
[tex](x_0,y_0)[/tex] are the coordinates of a point lying on the line
For the line in this problem, we know that:
[tex]m=-\frac{3}{4}[/tex] is the slope
[tex](x_0,y_0)=(-5,4)[/tex] are the coordinates of the point
Therefore, substituting into the equation,
[tex]y-4=-\frac{3}{4}(x-(-5))[/tex]
And re-arranging the equation we get:
[tex]y-4=-\frac{3}{4}(x+5)\\y-4=-\frac{3}{4}x-\frac{15}{4}\\y=-\frac{3}{4}x+(4-\frac{15}{4})\\y=-\frac{3}{4}x+\frac{1}{4}[/tex]
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josh's grandfather gave him one penny on the day he was born. he plans to double the amount he gives Josh every day. estimate how much Josh will recieve from his grandfather on the 15th day.
Answer: 32767 pennies
Which polygon has an interior measure of 900°?
The polygon is a heptagon whose interior measure is 900 degrees
Solution:
The formula for calculating the sum of the measures of the interior angles of a polygon is:
[tex]S = (n-2) \times 180[/tex]
Where,
S = Sum of all interior angles
n = number of sides
From the given data:
S = 900
Therefore,
[tex]900 = (n-2) \times 180\\\\Divide\ both\ sides\ by\ 180\\\\n - 2 = 5\\\\n = 5 + 2\\\\n = 7[/tex]
The number of sides is 7
Heptagon is a seven-sided polygon or 7-gon
Therefore, the polygon is a heptagon
Answer:
its d on e2020 if anyone wanted the simple answer
Step-by-step explanation:
Together, teammates Pedro and Ricky got 2681 base hits last season. Pedro had 283 more hits than Ricky. How many hits did each player have
Answer:
Ricky had 1199 hits.
Pedro had 1482 hits.
Step-by-step explanation:
State your variables
let "p" be the number of Pedro's base hits
let "r" be the number of Ricky's base hits
Create equations using information from the problem
p + r = 2681 [1]
p = r + 283 [2]
Substitute equation [2] in equation [1] replacing 'p'
p + r = 2681
r + 283 + r = 2681
Combine like terms to simplify
2r + 283 = 2681
Isolate '"r" to solve for Ricky's base hits.
2r + 283 - 283 = 2681 - 283 Subtract 283 on both sides
2r = 2398
2r/2 = 2398/2 Divide both sides by 2
r = 1199 Number of Ricky's hits
Substitute r = 1199 into any equation to find "p". I will use [2].
p = r + 283
p = 1199 + 283 Add
p = 1482 Number of Pedro's hits
Therefore Ricky had 1199 hits and Pedro had 1482 hits.
Ricky had 1199 hits and Pedro had 1482 hits.
Explanation:To solve this problem, we can set up a system of equations. Let x represent the number of hits Ricky had. Pedro had 283 more hits, so Pedro's number of hits would be x + 283.
Together, their hits add up to 2681, so we can write the equation:
x + (x + 283) = 2681
Combining like terms:
2x + 283 = 2681
Subtracting 283 from both sides:
2x = 2398
Dividing both sides by 2:
x = 1199
Ricky had 1199 hits and Pedro had x + 283 = 1199 + 283 = 1482 hits.
Casey has a collection of 39 amusement park pins. The pins are from an amusement park in Florida and an amusement park in Virginia. There are twice as many pins from the amusement park in Florida. How many pins are from the amusement park in Virginia?
Answer:
13 pins
Step-by-step explanation:
2x=Florida
x=Virginia
39=2x+x
39=3x
÷3 ÷3
13=x
26 pins are from city V.
Let,
x = number of pins from city F.
y = number of pins from city V.
According to the question:
[tex]x+y=39\\y = 2x[/tex]
Solving them, [tex]x = 13, y=26[/tex]
So 26 pins are from city V.
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The largest possible circle is cut out of a square whose side length is 8 feet. What will be the approximate area, in square feet, of the remaining board? ( A=3.14r2)
Step-by-step explanation:
Given , The length of side of the square is 8 feet.
Since a circle is inscribed in the square. Then the diameter of the circle is equal to the length of side of the square .
Therefore the diameter of the circle is = 8 feet.
Radius of the circle is(r) = [tex]\frac{8}{2}[/tex] feet = 4 feet
The area of the circle is= 3.14 r²
= 3.14 × 4² square feet
= 50.24 square feet
The area of the square is = side × side
= 8×6 square feet
=64 square feet
Therefore the area of remaining board = (64- 50.24)square feet
=13.76 square feet
How do you explain 87% of 55?
Simplify.
Rewrite the expression in the form 4^n
(4^6)(4^-8) =
Answer:
4^-2
Step-by-step explanation:
The rules of exponents tell you ...
(a^b)(a^c) = a^(b+c)
This means ...
(4^6)(4^-8) = 4^(6-8) = 4^-2
To simplify the expression (4^6)(4^-8), add the exponents and rewrite the expression as 4^(-2). Then, use the rule that states any number raised to the power of -1 is the reciprocal of that number to rewrite 4^-2 as 1/(4^2) which equals 1/16.
Explanation:To simplify the expression (4^6)(4^-8), we can use the rule that states when you multiply two powers with the same base, you add their exponents. In this case, 4^6 multiplied by 4^-8 will be equal to 4^(6 + (-8)). Simplifying the exponent, we have 4^(-2). Since any number raised to the power of -1 is the reciprocal of that number, we can rewrite 4^-2 as 1/(4^2) which is equal to 1/16.
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What is the volume, in cubic inches, of the baseball ?
Answer:
The volume of a baseball is about 13.39 cubic inches.
Step-by-step explanation:
Cristiano is rolling a number cube. What is the probability of rolling a , or
a 6 followed by a 3 or a 4?
The probability of rolling a 6 followed by either a 3 or a 4 on a six-sided die is calculated by multiplying the probability of rolling a 6 (1/6) by the probability of then rolling either a 3 or a 4 (1/3), resulting in a combined probability of 1/18.
The question posed is about the probability of rolling a 6 followed by either a 3 or a 4 on a standard six-sided die. To find this, we first consider that the probability of rolling a specific number, such as a 6, on a six-sided die is 1/6. This is because there are 6 outcomes and only one of those outcomes is the desired number.
When rolling for the second number, which could either be a 3 or a 4, we have two desired outcomes out of the six possible outcomes on the die. Therefore, the probability of rolling either a 3 or a 4 is 2/6, which simplifies to 1/3.
To find the overall probability of rolling a 6 followed by either a 3 or a 4, we multiply the two probabilities together: (1/6) * (1/3) = 1/18. Therefore, the probability of this event occurring is 1/18.
100 POINTS!!!
1) What is the sum of the linear expressions?
3x + 9 and 2x + 4
2) Add the linear expressions:
2n + 6 and 6n - 2
3) Add the linear expressions. -3x + 9 and 6x - 12
4) Add the linear expressions: 1/4x + 10 and 1/2x - 7
5) Find the difference: (3x + 5) - (2x +2)
6) Subtract 8 from 10
7) Subtract 2.5x from 7.8x.
8) Subtract (3.4x + 8) from (5.8x + 10)
9) Find the difference: (8x + 5) - (2x + 8)
10) Evaluate & explain how you arrived at your answer: (-4x -3) - (-4x -3)
Answer & Step-by-step explanation:
[tex]1)\\(3x+9)+(2x+4)\qquad\text{combine like terms}\\\\=(3x+2x)+(9+4)\\\\=\boxed{5x+13}\\\\===========================[/tex]
[tex]2)\\(2n+6)+(6n-2)\qquad\text{combine like terms}\\\\=(2n+6n)+(6-2)\\\\=\boxed{8n+4}\\\\===========================[/tex]
[tex]3)\\(-3x+9)+(6x-12)\qquad\text{combine like terms}\\\\=(-3x+6x)+(9-12)\\\\=\boxed{3x-3}\\\\===========================[/tex]
[tex]4)\\\left(\dfrac{1}{4}x+10\right)+\left(\dfrac{1}{2}x-7\right)\qquad\text{combine like terms}\\\\=\left(\dfrac{1}{4}x+\dfrac{1}{2}x\right)+(10-7)\\\\=\left(\dfrac{1}{4}x+\dfrac{1\cdot2}{2\cdot2}x\right)+3\\\\=\left(\dfrac{1}{4}x+\dfrac{2}{4}x\right)+3\\\\=\boxed{\dfrac{3}{4}x+3}\\\\===========================[/tex]
[tex]5)\\(3x+5)-(2x+2)\\\\=3x+5-2x-2\qquad\text{combine like terms}\\\\=(3x+2x)+(5-2)\\\\=\boxed{5x+3}\\\\===========================[/tex]
[tex]6)\\10-8=\boxed{2}\\\\===========================[/tex]
[tex]7)\\7.8x-2.5x=\boxed{6.3x}\\\\===========================[/tex]
[tex]8)\\(5.8x+10)-(3.4x+8)\\\\=5.8x+10-3.4x-8\qquad\text{combine like terms}\\\\=(5.8x-3.4x)+(10-8)\\\\=\boxed{2.4x+2}\\\\===========================[/tex]
[tex]9)\\(8x-2)-(2x+8)\\\\=8x-2-2x-8\qquad\text{combine like terms}\\\\=(8x-2x)+(-2-8)\\\\=\boxed{6x-10}\\\\===========================[/tex]
[tex]10)\\(-4x-3)-(-4x-3)\\\\=-4x-3-(-4x)-(-3)\\\\=-4x-3+4x+3\qquad\text{combine like terms}\\\\=(-4x+4x)+(-3+3)\\\\=0+0\\\\=\boxed{0}\\\\\text{You could do it shorter.}\\\text{The result will be 0 because we subtract}\\\text{ the same expressions from each other.}[/tex]
To add or subtract linear expressions, combine like terms. For example, to add 3x + 9 and 2x + 4, you combine the x terms and the constant terms separately to get 5x + 13. The same method is applied to the rest of the problems, resulting in simplified linear expressions.
Adding and Subtracting Linear Expressions:
To add or subtract linear expressions, you combine like terms, which are terms that have the same variables raised to the same power. Let's go through the problems one by one:
Sum of 3x + 9 and 2x + 4: (3x + 2x) + (9 + 4) = 5x + 13.
Add 2n + 6 and 6n - 2: (2n + 6n) + (6 - 2) = 8n + 4.
Add -3x + 9 and 6x - 12: (-3x + 6x) + (9 - 12) = 3x - 3.
Add 1/4x + 10 and 1/2x - 7: (1/4x + 1/2x) + (10 - 7) = 3/4x + 3.
Find the difference: (3x + 5) - (2x +2) = (3x - 2x) + (5 - 2) = x + 3.
Subtract 8 from 10: 10 - 8 = 2.
Subtract 2.5x from 7.8x: 7.8x - 2.5x = 5.3x.
Subtract (3.4x + 8) from (5.8x + 10): (5.8x - 3.4x) + (10 - 8) = 2.4x + 2.
Find the difference: (8x + 5) - (2x + 8) = (8x - 2x) + (5 - 8) = 6x - 3.
Evaluate (-4x -3) - (-4x -3): (-4x + 4x) - (-3 + 3) = 0x + 0 = 0.
These are the simplified forms of the linear expressions after combining like terms.
Simplify =(3-2)x+2y+2
Answer:
x + 2y + 2
Step-by-step explanation:
1. Simplify 3 − 2 to 1
1 · x + 2y + 2
2. Simplify 1 · x to x
x + 2y + 2
11 less than 7 times a number
is 5 more than 6 times the
number. Find the number
Answer:
5 i think. im not good at math. sorry if wrong
Bonnie has to maintaining an average of 90 in all of her classes to have an A average . In math , she has scored 93,70,99 and 95 on the first four tests . What must she score on the last test to have an average 90 ?
Answer:trey wey ery day
Step-by-step explanation:
Answer:it’s 93 that’s all that matters
Step-by-step explanation:
A line passes through the points (8, –1) and (–4, 2). A coordinate plane. What is the y-intercept of this line?
-4
-1
1
4
Answer:
y-intercept is 1
Step-by-step explanation:
We need to find the equation of the line first.
GradientThe gradient is found using the formula:
[tex]m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
[tex]m=\frac{-1-2}{8--4}[/tex]
[tex]m=-\frac{1}{4}[/tex]
So the equation is y = [tex]-\frac{1}{4}[/tex]x + c
Finding cTo find c we need to substitute the value of x and y into the equation:
-1 = [tex]-\frac{8}{4}[/tex] + c
-1 = -2 + c
1 = c
And c is the y-intercept so it is 1
Answer:
y- intercept = 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (8, - 1) and (x₂, y₂ ) = (- 4, 2)
m = [tex]\frac{2+1}{-4-8}[/tex] = [tex]\frac{3}{-12}[/tex] = - [tex]\frac{1}{4}[/tex], thus
y = - [tex]\frac{1}{4}[/tex] x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (8, - 1), then
- 1 = - 2 + c ⇒ - 1 + 2 = 1 ← y- intercept
jorge took a speed reading class last saturday from 9 am to 4 pm. he learned that he can speed read 330 pages of a novel in one hour with good comprehension. how many pages does he speed read in 225 minutes
Answer:
1hr = 60min
225min/ 60min = 3.75 hr
330 pgs. * 3.75hr = 1237.5 pages
He read 1237.5 pages in 225 minutes.
Jorge can speed read 1237.5 pages in 225 minutes.
How to convert the speed of something per hour to per minute.If the speed of something is given per hour. We can convert it to per minute by dividing the speed by 60. This is because 1 hour = 60 minutes.
It is given that he can speed read around 330 words per hour.
We have to convert this into per minute.
This can be done as follows:
Speed = 330 pages per hour
= 330/60 pages per minute
= 5.5 pages per minute
We can multiply the number of pages per minute with the number of minutes to find how many pages he would have completed in that time:
5.5 * 225 = 1237.5 pages
Thus, we have found that Jorge can speed read 1237.5 pages in 225 minutes.
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What is -3(y+3)=9x in slope-intercept form?
Answer:
Y= -3x - 3
Step-by-step explanation:
-3*y= -3y
-3*3= -9
-3y - 9= 9x
-3y= 9x + 9
(9x +9)/-3
y= -3x - 3
Cesar is 35 years old. He has $870 in a checking account, $2900 in a savings
account, $13,000 in a retirement account, and owns a car worth $5900. What
is the total value of his liquid assets?
A. $3270
O B. $18,900
O c. $22,170
O D. $2900
please help
Answer:
A. $3770
Step-by-step explanation:
The correct answer must be $3770 (not $3270), checking accounts and savings accounts are liquid assets. However, cars are not liquid assets because liquid assets are things that can be quickly turned into cash without losing much if any of their inherent value. In this case, the retirement account is not a liquid asset as it is designed to hold your money until retirement age, and given that Cesar is 35 years old so he has not reached retirement age.
Answer:
the answer is a 3770.
Step-by-step explanation: