Answer: b. Area of a triangle.
Step-by-step explanation:
a. The formula for calculate the area of a parallelogram is:
[tex]A_{p}=b*h[/tex]
Where "b" is the base and "h" is the height.
Then, with the given formula you can't find the area of a parallelogram.
b. The formula for calculate the area of a triangle is:
[tex]A_{tr}=\frac{1}{2}(b*h)[/tex]
Where "b" is base and "h" is the height.
Then, with the given formula you can find the area of a triangle.
c. The formula for calculate the area of a trapezoid is:
[tex]A_{tp}=\frac{h}{2}(B+b)[/tex]
Where "B" is the larger base ,"b" is the smaller base and "h" is the height.
Then, with the given formula you can't find the area of a trapezoid.
d. The formula for calculate the area of a rectangle is:
[tex]A_{r}=l*w[/tex]
Where "l" is the lenght and "w" is the width.
Then, with the given formula you can't find the area of a rectangle.
Solve this system of equations using
the substitution method.
y = 3x + 9
y = 5x – 3
I need the answer for X and Y
Answer: Please Mark Brainliest :) !!
The answer is x= 6 and y= 27.
Step-by-step explanation:
3x + 9 = 5x + 3
-2x + 9 = -3
y = 5x -3
x = 6
y = 5x -3
y = 5(6) -3
y = 27
First, when solving for x, you would need to make one of the equation into standard form, which would be Ax + By = C. So, I'm going to use y = 5x -3.
y = 5x - 3 || subtract -5x on both sides from the equal sign
5x + y = -3 || there you have one equation in standard form
Now, all you have to do now is substitute the y-intercept form equation into the standard form equation. As you can see, you would substitute the y-intercept form into the y in the standard form equation.
5x + y = -3
5x + 3x + 9 = -3 || combine like terms
8x + 9 = -3 || subtract 9 on both sides from the equal sign
8x = 6 || divide by 8 on both sides from the equal sign
x = 0.75 || final answer for x
Then for solving y, take any equation in y-intercept form and substitute with the x in the equation, which I'm going to use y = 3x + 9 in this case.
y = 3x + 9 || substitute with x
y = 3 (0.75) + 9 || multiply 3 and 0.75
y = 3.75 + 9 || add 3.75 and 9
y = 12.75 || final answer for y
Thus, x = 0.75 and y = 12.75.
13. Write a function with a zero of 1/2. Explain how you know.
Answer:
The function is [tex]f(x)=2x-1[/tex]
Step-by-step explanation:
If a function has a zero of [tex]\frac{1}{2}[/tex].
The we can write [tex]x=\frac{1}{2}[/tex].
We need to work backwards to obtain the function:
We multiply through by 2 to get:
[tex]2x=1[/tex].
This implies that:
[tex]2x-1=0[/tex]
Hence a function with such zero is [tex]f(x)=2x-1[/tex]
Answer:
The function is [tex]f(x)=4x-2[/tex]
Step-by-step explanation:
That a function has a zero at a certain number x means that [tex]f(x)=0[/tex]
Let's see an example,
If we have [tex]f(x)=x+2[/tex] (this is what we call function)
and we choose any value for the x,
x = 3
Now we replace it in our function
[tex]f(3)=3+2[/tex]
[tex]f(3)=5[/tex] (this is the image of 3)
Now if we say that x = -2, and replace it in our function
[tex]f(-2)=(-2)+2[/tex]
[tex]f(-2)=0[/tex] , this means that our function has a zero at x = -2
We can find the zeros of our function equaling it to zero and clearing the x, let's see
[tex]x+2=0[/tex]
[tex]x=-2[/tex] this means that our function has a zero at x = -2
To find a function that has a zero at [tex] \frac{1}{2}[/tex] , let's think that the result must be [tex]f(x)=0[/tex]
If we have 4 and multiply it by 1/2.
[tex]4)(\frac{1}{2})=2[/tex], now we subtract 2 from this result
[tex]-2 = 0[/tex] , the complete process would be
[tex]4)(\frac{1}{2})-2=0[/tex], we said that [tex] \frac{1}{2}[/tex], then
[tex]4x-2[/tex], now we write it as a function
[tex]f(x)=4(x)-2[/tex] we know that by replacing the x by 1/2 the result will be zero, which means that [tex] \frac{1}{2}[/tex] is zero of this function
Kyle drew 4 polygons labeled A,B,C, and D. Figure A has twice as many sides as Figure B. Figure B has 3 vertices. Figure C has half as many sides as figure D. Figure D has 8 vertices. Name each polygon Kyle draw.
Answer:
Figure A - hexagon
Figure B - triangle
Figure C - rectangle
Figure D - octagon
Step-by-step explanation:
If figure B has 3 vertices (angles), then that means it is a triangle (3 sides)
So that means figure A has 6 sides, (hexagon)
And figure D has 8 vertices, so 8 sides (octagon)
And if C has half as many, that would be 4 (rectangle)
Martina chose a random sample of 10 bags of candy from two different brands, A and B. All bags in the sample are the same size. Martina counts the number of candy pieces in each bag and plots the results on two dot plots.
A dot plot is shown. The title of the plot is Brand A. The line is numbered with tick marks at 40, 45, 50, 55, 60, 65, and 70 and is labeled Number of Candy Pieces. There are 2 dots at 52, 1 dot at 53, 2 dots at 55, 1 dot at 56, 2 dots at 57, and 2 dots at 62.
A dot plot is shown. The title of the plot is Brand B. The line is numbered with tick marks at 40, 45, 50, 55, 60, 65, and 70 and is labeled Number of Candy Pieces. There is 1 dot at 44, 1 dot at 46, 2 dots at 52, 1 dot at 55, 1 dot at 62, 1 dot at 65, 2 dots at 67 and 1 dot at 69
Based on the plots, which statement is a valid comparison of the number of candies in the bags of the two brands?
A. The number of candies in the bags from brand B is greater and more consistent than the number of candies in the bags from brand A.
B. The number of candies in the bags from brand B is greater and less consistent than the number of candies in the bags from brand A.
C. The number of candies in the bags from brand B is fewer and more consistent than the number of candies in the bags from brand A.
D. The number of candies in the bags from brand B is fewer and less consistent than the number of candies in the bags from brand A.
Answer:
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
On the dot plots we have a higher range of numbers in Brand B so the answer would be B
:)
Solve the inequality
Please help and show me your working out thank you so much for your help:)
Answer:
-3≤x<4
Step-by-step explanation:
First you divide 3 on all sides of the equation.
So,
Answer:
x= (-3,-2,-1,0,1,2,3)
Step-by-step explanation:
You would divide 3 from both which you would get:
-3< x <4
x can represent any number above because the numbers I listed above is greater than -3 or less than 4.
3*-1=-3
3*0=0 ....... -3 <0 >4
3*1=3
complete the square in vertex form y=x^2+18x-2
Answer:
y = (x + 9)² - 83
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
Given
y = x² + 18x - 2
Obtain vertex form by using the method of completing the square
add/subtract (half the coefficient of the x- term )²
y = x² + 2(9)x + 81 - 81 - 2
= (x + 9)² - 83
The ANSWER IS Y=(x+9)^2-83
For circle O, mCD=125° and m
CA is a diameter of the circle, so [tex]m\widehat{AC}=180^\circ[/tex], which means [tex]m\angle AOB=m\angle AOD=m\widehat{AD}=180^\circ-m\widehat{CD}=55^\circ[/tex]. Then [tex]m\boxed{\angle ABO}=90^\circ-55^\circ=35^\circ[/tex].
This means [tex]m\angle CBO=55^\circ-35^\circ=20^\circ[/tex]. Also, if [tex]m\angle AOB=55^\circ[/tex], then [tex]m\angle BOC=180^\circ-55^\circ=125^\circ[/tex], which in turns tells us that [tex]m\boxed{\angle BCO}=180^\circ-20^\circ-125^\circ=35^\circ[/tex].
Answer:
In the figure, ∠ ABO and ∠ BCO have measures equal to 35°.
Step-by-step explanation:
Correct for plato
What is the value of x?
A) 3
B) 2
C) 1
D) 4
I believe the answer is A) 3
Answer:
A.) 3
Step-by-step explanation:
If you plug in the options for x you get different numbers on both sides. A.) is the only answer were you get same numbers, 11.
Hope this helped!
Precalculus Homework help please.
Answer:
see explanation
Step-by-step explanation:
(5)
Using the trigonometric identity
sin²x + cos²x = 1 ⇒ cos²x = 1 - sin²x
Given
3sin²Θ + 2cos²Θ - 2
= 3sin²Θ + 2(1 - sin²Θ) - 2
= 3sin²Θ + 2 - 2sin²Θ - 2
= sin²Θ
(6)
Using the trigonometric identity
secx = [tex]\frac{1}{cosx}[/tex]
Consider the left side
[tex]\frac{cosx}{1-sin^2x}[/tex]
= [tex]\frac{cosx}{cos^2x}[/tex]
= [tex]\frac{1}{cosx}[/tex] = secx = right side ⇒ verified
(7)
Using the trigonometric identity
1 + cot²x = csc²x
Given
sin²x. cot²x + sin²x ← factor out sin²x from each term
= sin²x(cot²x + 1)
= sin²x. csc²x
= sin²x × [tex]\frac{1}{sin^2x}[/tex] = 1
Probability Question
To find the probability that A occurs given B occurs, multiply the Probability of A by the probability of B.
3/4 x 5/8 = 15/32
Which of the following uses the Distributive Property to determine the product 12(185) Question 6 options: a) 12(100) + 12(13) b) 12(18) + 12(5) c) 12(1) + 12(8) + 12(5) d) 12(100) + 12(80) + 12(5)
Answer:
d) 12(100) + 12(80) + 12(5)
Step-by-step explanation:
According to the distributive property, if a,b, c, and d are real numbers, then
a(b+c+d)=ab+ac+ad
We want to find the product 12(185).
We can expand 185 as 100+80+5
Our product then becomes;
[tex]12(185)=12(100+80+5)[/tex]
We expand using the distributive property to get;
[tex]12(185)=12(100)+12(80)+12(5)[/tex]
The correct choice is D
Answer: Option 'D' is correct.
Step-by-step explanation:
Since we have given that
12(185)
Firstly we can write
185=100+80+5
So, it will be rewritten as
12(100+80+5)
As we know that distributive law that implies
a(b+c+d)=ab+ac+ad
So, according to distributive law, it becomes,
12(100)+12(80)+12(5)
Hence, option 'd' is correct.
I need to find the missing numbers
Answer:
b11 = -14
b12 = 9
b13 = 8
Step-by-step explanation:
* Lets revise some notes to solve the problem
- Any matrix has a dimension m × n, where m is the number of rows
and n the number of columns
- We can add matrices with same dimensions
* Now lets solve the problem
∵ [tex]B+\left[\begin{array}{ccc}15&-7&4\\0&1&2\end{array}\right]=\left[\begin{array}{ccc}1&2&12\\4&0&2\end{array}\right][/tex]
- Let [tex]B=\left[\begin{array}{ccc}b11&b12&b13\\b21&b22&b23\end{array}\right][/tex]
∴ [tex]\left[\begin{array}{ccc}b11&b12&b13\\b21&b22&b23\end{array}\right]+\left[\begin{array}{ccc}15&-7&4\\0&1&2\end{array}\right]=\left[\begin{array}{ccc}1&2&12\\4&0&2\end{array}\right][/tex]
- Lets add and find the missing
* Lets start with the first rows
∵ b11 + 15 = 1 ⇒ subtract 15 from both sides
∴ b11 = -14
∵ b12 + -7 = 2 ⇒ add 7 to both sides
∴ b12 = 9
∵ b13 + 4 = 12 ⇒ subtract 4 from both sides
∴ b13 = 8
* Now lets start with the second rows
∵ b21 + 0 = 4
∴ b21 = 4 ⇒ given
∵ b22 + 1 = 0 ⇒ subtract 1 from both sides
∴ b22 = -1 ⇒ given
∵ b23 + 2 = 2 ⇒ subtract 2 from both sides
∴ b23 = 0 ⇒ given
On the first five performance scores at work, your scores were: 84, 83, 92, 80, and 95. On the average, what was your score?
A)
62
B)
84.75
C)
86.8
D)
88.5
Its C, you have to add all the numbers up and divide by how many numbers there are
Melissa and Rachel like to make funny hats. Melissa has made 20 zebra printed hats and Rachel has made H striped hat. Together they have made a total of 42 hats
20+h=42 is the answer
Answer: Melissa made 22 striped hats
(Hope this helps) :D
Step-by-step explanation: You get this answer by subtracting 20 from 42 to get 22
Solve for f.
f+0.2=−3
Subtract 0.2 by both sides and the your answer is f = -3.2
Answer:
the answer is f=-3.2
Step-by-step explanation:
because with solving linear equations you have to do the opposite of what your doing do like f+0.2=−3 since your adding you want to subtract instead you want to subtract on both sides so we know 0.2-0.2= 0 so 0.2- -3= -3.2 so that gives us our answer -3.2
What is the absolute value of -8.2? What is the answer
What polynomial has roots of -6,1, and 4
For this case, we have: If we have a root polynomial -6, 1, and 4. Then, the previous step was:
[tex](x + 6) (x-1) (x-4) = 0[/tex]
To build the polynomial we must multiply:
[tex](x + 6) (x-1) (x-4) =\\(x ^ 2-x + 6x-6) (x-4) =\\x ^ 3-4x ^ 2-x ^ 2 + 4x + 6x ^ 2-24x-6x + 24 =[/tex]
Adding similar terms:
[tex]x ^ 3 + x ^ 2-26x + 24[/tex]
Answer:
[tex]x ^ 3 + x ^ 2-26x + 24[/tex]
How much more will 22,000 earn in interest than 14000 if both are invested in savings accounts with apys of 5.4% for a year?
Answer:
$432 more are earned by 22,000 than 14,000 if invested with apys of 5.4% for a year
Step-by-step explanation:
Total = [tex]P*(1+r)^t[/tex]
where P=Principal amount
r= rate
t= time
Using this formula for P= 22,000 and r = 5.4% or 0.054 and t= 1
Total = [tex]22,000*(1+0.054)^1[/tex]
Total = [tex]23,188[/tex]
Interest earned = 23,188 -22,000
Interest earned = 1,188
Using this formula for P= 14,000 and r = 5.4% or 0.054 and t= 1
Total = [tex]14,000*(1+0.054)^1[/tex]
Total = [tex]14,756[/tex]
Interest earned = 14,756 -14,000
Interest earned = 756
AS interest earned by 22,000 is 1,188 while interest earned by 14,000 is 756
so, 1,188 - 756 = 432.
So, $432 more are earned by 22,000 than 14,000 if invested with apys of 5.4% for a year
Answer:
$432
Step-by-step explanation:
What is the sum of 5x^2+3x-7 and 12x+12?
It’s 5x^2 + 15x + 5 ! :)
I need help on this too 1000%
(20 POINTS) Please show all of your work.
Solve.
x^2+5x-6=0
Answer:
x = -6 or x = 1Step-by-step explanation:
[tex]x^2+5x-6=0\\\\x^2+6x-x-6=0\\\\x(x+6)-1(x+6)=0\\\\(x+6)(x-1)=0\iff x+6=0\ \vee\ x-1=0\\\\x+6=0\qquad\text{subtract 6 from both sides}\\x=-6\\\\x-1=0\qquad\text{add 1 to both sides}\\x=1[/tex]
Answer:
x = -6 or 1
Step-by-step explanation:
x² + 5 x - 6 = 0
Factors = -6 , 1
Sum = 5
Product = -6
x ( x + 6 ) - 1 ( x + 6 ) = 0
( x + 6 ) ( x - 1 )
x + 6 = 0
x = -6
x - 1 = 0
x = 1
A triangle has side lengths of 15, 20, and 25. What type of triangle is it?
a.) right
b.) equiangular
c.) acute
d.) obtuse
Acute triangle is the answer
Answer:
The answer is a. right.
Step-by-step explanation:
GIVEN:
hypo=25
opposite and adjacent=15 and 20.
FORMULA:
hypotenuse^2 =opposite side^2 + adjacent side^2
25^2=15^2+20^2
625=225+400
400+225=625
(Got this from yahoo answers, everybody said right.)
If two dice are placed end to end, which shape have the dice formed?
A) cone
Reactivate
B) cylinder
C) polygon
D) prism
will mark brainliest if correct and give 50 pts.
Answer:
D
Step-by-step explanation:
It would be D.) Prism, since a dice have no curves they cannot be a cylinder or cone, a polygon is 2D and dice are 3D, and once put together they create a 3D rectangle, also known as a rectangular prism.
what are paralellograms
Answer:
what are paralellograms------------>a four-sided plane rectilinear figure with opposite sides parallel.
mark me brainliest
Step-by-step explanation:
Final answer:
A parallelogram is a four-sided polygon with opposite sides that are both parallel and equal in length. It also has opposite angles that are equal.
Explanation:
A parallelogram is a four-sided polygon with opposite sides that are both parallel and equal in length. It also has opposite angles that are equal. In other words, if you take any two opposite sides of a parallelogram and extend them indefinitely in both directions, they would never intersect.
Parallelograms have several properties:
Opposite sides are parallel and equal in length.Opposite angles are equal.Consecutive angles are supplementary, meaning they add up to 180 degrees.Diagonals bisect each other.help if you do help you get 98 points. :)
Answer:
Answer is C
pls give brainliest!
Answer:
Abraham Lincoln, the 16th president of the United States, was born on February 12, 1809 and died at the age of 56 on the 4th day of March 1861. Lincoln was the president of the United States for four years from 1861 to 1865. Lincoln was born in Hardin County in the state of Kentucky in a small cabin that only had one room. His parents, Thomas Lincoln and Nancy Hanks were farmers who had a large track of land that measured 348 acres on which their cabin was situated. His parents were uneducated, however.
Lincoln’s political career began in 1832 when he created a political campaign for a political party known as the Whig Party. This party was based on efforts that sought to improve navigation on the neighboring river. Ten years later, Lincoln married the love of his life, Mary Todd, with whom he had four sons. Unfortunately, only one of his four sons did not survive into adulthood. Lincoln’s participation in active national politics took a turn for the better in 1842 when he campaigned and was elected to the US House of Representatives.
Step-by-step explanation:
What is the inverse of the function below?
ANSWER
[tex]{f}^{ - 1}(x) = ln(x)[/tex]
EXPLANATION
The given function is
[tex]f(x) = {e}^{x} [/tex]
Let
[tex]y={e}^{x} [/tex]
We interchange x and y.
[tex]x={e}^{y} [/tex]
Solve for y.
[tex]y = ln(x) [/tex]
This implies that,
[tex] {f}^{ - 1}(x) = ln(x) [/tex]
The correct answer is C
Answer:
[tex]f^{-1}(x)=ln(x)[/tex]
Step-by-step explanation:
Given function is [tex]f\left(x\right)=e^x[/tex].
Now we need to find it's inverse so follow these steps:
Step 1: replace f(x) with y.
[tex]y=e^x[/tex]
Step 2: Switch x and y.
[tex]x=e^y[/tex]
Step 3: Solve for y.
[tex]x=e^y[/tex]
[tex]ln(x)=ln(e^y)[/tex]
[tex]ln(x)=y[/tex]
[tex]y=ln(x)[/tex]
Step 4: Replace y with [tex]f^{-1}(x)[/tex].
[tex]f^{-1}(x)=ln(x)[/tex]
Hence final answer is [tex]f^{-1}(x)=ln(x)[/tex].
What percent of 75 is 33
Answer:
33 is 44% of 75Step-by-step explanation:
First step:
Calculate, what fraction of 75 is 33:
[tex]\dfrac{33}{75}=\dfrac{33:3}{75:3}=\dfrac{11}{25}[/tex]
Second step:
Convert to the percent:
[tex]\dfrac{11}{25}\cdot100\%=(11)(4\%)=44\%[/tex]
33 is 44% of 75.
To determine what percent of 75 is 33, you can use the formula: (part/total) × 100. In this case, the part is 33 and the total is 75.
First, divide 33 by 75: 33 / 75 = 0.44.Next, convert the decimal to a percent by multiplying by 100: 0.44 × 100 = 44%.Thus, 44% of 75 is 33.
A spinner is spun twice. it has a 3, 5, 7, & 9 on it. how many outcomes could produce a product greater than 21?
A / 11
B / 10
C / 12
D / 13
Answer:
A
Step-by-step explanation:
What numbers on both spins would create a PRODUCT GREATER THAN 21?
3 and 9
5 and 5
5 and 7
5 and 9
7 and 7
7 and 5
7 and 9
9 and 9
9 and 3
9 and 5
9 and 7
So, as we can see, we have 11 possibilities of getting a product GREATER than 21 (not 21...).
Correct answer A.
The rectangular prism is to be slices perpendicular to the shaded face and is to pass through point B , parallel to the front face . What will the dimensions of the rectangular cross section be
Answer:
10 centimeters by 18 centimeters
Step-by-step explanation:
we know that
The rectangular cross section is parallel to the front face
That means-----> The dimensions of the cross section are congruent with the dimensions of the front face
The dimensions of the front face are 10 centimeters by 18 centimeters
therefore
The dimensions of the cross section are 10 centimeters by 18 centimeters
Answer:
C.) 10 centimeters by 18 centimeters
Step-by-step explanation:
Suppose you and some friends are going to the movies. The amount of money you spend for tickets varies directly with the number of people buying tickets. If you doesn’t $48 for six tickets, what is the constant of variation?
Answer:
8
Step-by-step explanation:
simplify the expression. eliminate negative exponents (x^2)(x^7)(x^-3) =
x⁶; multiplying monomials means adding their exponents in this case.