Answer:
3/2 m / sec²
Step-by-step explanation:
acceleration = change in velocity / time
Here, that would be
acc'n = 15 m/s / 10 s = 3/2 m / sec²
I need to find what the variable is in this equation -7+m=-9
Answer:
m=-2
Step-by-step explanation:
-7 + -2 = -7 -2
-7 -2 = -9
Anna has a bag of marbles for her little sister. It contains 12 red marbles, 6 white
marbles, and 2 blue marbles, She drops the bag and 3 marbles roll out, What is the probability that all 3 marbles that roll out are white?
A. 15/343
B.1/57
C.3/20
D.1/120
Final answer:
The probability that all 3 marbles rolled out are white is found by calculating the combinations of drawing 3 white from 6 white marbles over the total combinations of drawing 3 marbles from all 20 marbles, resulting in an answer of 1/57.
Explanation:
The student asks about the probability that all 3 marbles rolled out are white given the total numbers of red, white, and blue marbles in the bag. To find this probability, you apply the principles of combinatorics to calculate the likelihood of drawing 3 white marbles one after another without replacement from a set of 12 red, 6 white, and 2 blue marbles.
To solve this, you first determine the total number of ways 3 marbles could be drawn from the bag, which would be combinations of 20 marbles taken 3 at a time, noted as C(20,3). Then calculate the combinations of 6 white marbles taken 3 at a time, C(6,3). The probability is the ratio of these two combinations, so:
Total possible combinations: C(20,3) = 20! / (17! * 3!) = 1140White marble combinations: C(6,3) = 6! / (3! * 3!) = 20Probability = White marble combinations / Total possible combinations = 20 / 1140 = 1 / 57
The correct answer is B. 1/57.
How do you work out this problem using completing the square x2 - 4x - 80 = 0
Answer:
A value that satisfies this equation is called a root, zero or solution of the equation!! We have three ... Solve each by factoring. 1) x2 + 4x -5 = 0 ... Follow the explanation and sample problem to review completing the square.
Step-by-step explanation:
x^2 - 4x = 80
x^2 - 4x + 4 = 80 + 4 (Divide b, which is 4, by 2 and square it.)
x^2 - 4x + 4 = 84
sqrt(x + 2)^2 = sqrt(84)
x + 2 = plus or minus sqrt(84)
Subtract 2 from both sides
x = -2 plus or minus sqrt(84)
Which is the slope of the line that passes through the points (2,8) and (4,6)?
Answer:
- 1
Step-by-step explanation:
m = (y-y') / (x - x')
m = (6 - 8) / (4 - 2) = -2 / 2 = - 1
Answer:
slope = -1
Step-by-step explanation:
IF PROBABILITY RANDOMLY CHOSEN ATHLETE IS A SWIMMER IS 0.65, THEN WHAT IS THE PROBABILITY CHOSEN ATHLETE IS NOT A SWIMMER? GIVE ANSWER AS A DECIMAL
Answer:
0.35
Step-by-step explanation:
a randomly chosen person's chance of being an athlete is 100%, or 1.00
Therefore: if the probability of a randomly chosen athlete is a swimmer is 0.65 or 65%, The probability of a randomly chosen athlete to NOT be a swimmer is:
1.00 - 0.65 = 0.35 or 35%
Final answer:
The probability that a randomly chosen athlete is not a swimmer is 0.35, calculated by subtracting the probability of being a swimmer (0.65) from 1.
Explanation:
If the probability that a randomly chosen athlete is a swimmer is 0.65, this means that there is a 65% chance of selecting a swimmer from a group of athletes. Since the total probability for any event is always equal to 1 (or 100%), we subtract the swimmer probability from 1 to find the probability that an athlete is not a swimmer.
To calculate: 1 - 0.65 = 0.35. Therefore, the probability that a randomly chosen athlete is not a swimmer is 0.35, or 35%.
A section of a basketball stadium is set up so that each row has the same number of seats. Kyleigh is seated in the 7th Row from the back and the 8th Row from the front of the section. Her seat is the fourth row from the right and the seventh from the left. How many seats are in this section of the stadium?
Final answer:
To find the total number of seats in the stadium section, we determine there are 14 rows and 10 seats per row, resulting in a total of 140 seats.
Explanation:
To determine the total number of seats in this section of the basketball stadium, we'll first find out how many rows and columns are present, based on the provided information. Kyleigh is seated in the 7th row from the back and the 8th row from the front of the section. This implies that there are a total of 14 rows (7+8-1 because the row Kyleigh is seated in counts for both the front and the back).
Similarly, Kyleigh's seat is the 4th row from the right and 7th from the left. This means there are a total of 10 seats in each row (4+7-1, as Kyleigh's seat counts for both the right and the left).
To find the total number of seats in this section, we multiply the number of rows by the number of seats per row: 14 rows × 10 seats per row = 140 seats.
Which expression is equivalent to g^5?
9x5
5x5x5x5x5x5x5x5x5
9x9x9x9x9
9x9x9x9x9x5x5x5x5x5x5x5x
[tex]\text{Hey there!}[/tex]
[tex]{\bf{Which\ expression\ is\ equivalent\ to \ 9^5?}[/tex]
[tex]\bf{Note: 9^5=59,049}[/tex]
[tex]\bf{Well, \ it\ is\ telling\ us\ that\ 9\ is\ expanded/expressed\ 5\ times}[/tex]
[tex]\bf{It\ CAN'T\ be\ option\ A. \ because\ 9\times 5\ because\ it\ equals \ 45}\\\\\bf{It\ CAN'T\ be\ option\ B.\ because\ the\ question\ is\ NOT\ asking\ 5^9}\\\\\bf{It\ CAN\ be\ option\ C.\ because\ it\ expressed\ the\ equation\ out }\\\\\bf{It\ CAN'T\ be\ Option\ D.\ because\ that\ equals\ 4,613,203,125\ and\ that\ is\ way\ too}\\\bf{big}[/tex]
[tex]\boxed{\boxed{\bf{Your \ answer:C. 9\times9\times9\times9\times9}}}\checkark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{LoveYourselfFirst:)}[/tex]
Final answer:
None of the given expressions are equivalent to g^5, as they all include the number 9. For a proper understanding, g^5 means multiplying g by itself five times (g x g x g x g x g). In exponentiation, such as (10²)³, exponents are multiplied to get the result (10&sup6;).
Explanation:
The expression g^5 represents g multiplied by itself 5 times. Looking at the given options, it is clear that none of them are equivalent to g^5 since they all involve the number 9, not the variable g. However, to understand the concept, if you were to express g^5 in a long form similar to the options, it would be g x g x g x g x g.
When discussing raising a number to an exponent, such as in (10²)³, you multiply the exponents, resulting in 10&sup6;. This comes from the law of exponents, which tells us that (a²)³ = a²×³. In this case, you would multiply 2 and 3 to get 6 as the new exponent for a.
This concept also applies to expressions inside parentheses raised to a power, affecting everything inside the parentheses. In the case of (27x³)(4x²), each term within the parentheses must be raised to the indicated power.
M=-4 and the y-intercept is 3
what is the solution for x in -10x+6y=-28
x = -0.6y + 5.6 is the answer
angles X and Y are supplementary and the mesure of angle X is 24 degrees greater than the measure of angle Y. Find the measures of angles X and Y
Measures of angles are X = 102° and Y = 78°
Step-by-step explanation:
Step 1: Let ∠X = 24 + Y. As they are supplementary angles, ∠X + ∠Y = 180°⇒ 24 + Y + Y = 180
⇒ 2Y = 180 - 24 = 156
⇒ Y = 156/2 = 78°
Step 2: Find measure of X⇒ X = 24 + Y = 24 + 78 = 102°
Mr Davis buys 30 tickets for the drama club to attend a play. The tickets cost n dollars each for a total of $360
Answer:
the answer is F. because n x 30 would = 360 and the n would be 12 so he paid 12 dollars per ticket and I got that answer by dividing the two numbers 30 and 360
brainliest plz
The answer is F.
Given: Mr. Davis buys 30 tickets for the drama club to attend a play. The tickets cost n dollars each for a total of $360.
How to find out the equation that can be used to find n?
As n x 30 would = 360 and the n would be 12 so he paid 12 dollars per ticket and I got that answer by dividing the two numbers 30 and 360.
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If 2304 in^3 of a material is worth $14.90 . how much is 2.25 in^3 of the same material worth?
Answer:
$0.01455
Step-by-step explanation:
(2.25 in^3)/(2304 in^3) = 0.0009765625
2.25 is 0.0009765625 part of 2304. Therefore, 2.25 in^3 is worth 0.0009765625 of $14.90
0.0009765625 * $14.90 = $0.01455
Can you please Help me solve 4c < 28
Answer:
4c < 28
divide by 4 both sides
x < 7
What is the slope of the line that passes through the points
(
−
10
,
−
4
)
(−10,−4) and
(
10
,
−
29
)
?
(10,−29)
Answer:
-1.25
Step-by-step explanation:
The slope of the line that passes through the points (-10, -4) and (10, -29) is calculated using the formula for slope and simplifying the resulting expression to yield a slope of -1.25.
Explanation:In mathematics, the slope of a line that passes through two points (x1, y1) and (x2, y2) can be calculated using the formula: slope = (y2 - y1) / (x2 - x1). So, let's input the coordinates of our two points into this formula:
slope = (-29 - (-4)) / (10 - (-10))
This simplifies to: slope = (-29 + 4) / (10 + 10)
So we end up with: slope = -25 / 20
Finally, simplifying further gives us: slope = -1.25
Therefore, the slope of the line that passes through the points (-10, -4) and (10, -29) is -1.25.
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Multiply each equation by a constant that would help to eliminate the y terms.
2 x minus 5 y = negative 21. 3 x minus 3 y = negative 18.
What are the resulting equations?
6 x minus 15 y = negative 63. Negative 15 x + 15 y = 90.
6 x minus 15 y = 63. Negative 15 x + 15 y = 90.
6 x minus 15 y = negative 63. Negative 15 x + 15 y = negative 90.
6 x minus 15 y = negative 63. Negative 15 x + 15 y = 90.
Answer:
Therefore the required resulting equation is
[tex]6x-15y=-63\\-15x+15y=90[/tex]
6 x minus 15 y = negative 63.
Negative 15 x + 15 y = 90
Step-by-step explanation:
Given:
[tex]2x-5y=-21[/tex] ......................Equation ( 1 )
[tex]3x-3y=-18[/tex] ......................Equation ( 2 )
To Find:
Expression after multiplying to eliminate y term,
Solution:
So to eliminate 'y' term we need to multiply equation 1 by a constant 3 and equation 2 by a constant -5, such that equations becomes
[tex]3(2x-5y)=3\times -21\\\\6x-15y=-63[/tex] .....( 1 )
[tex]-5(3x-3y)=-5\times -18\\\\-15x+15y=90[/tex] .....( 2 )
so now by adding new equation one and two we can eliminate y term that means -15y and +15y will get cancel,
Therefore the required resulting equation is
[tex]6x-15y=-63\\-15x+15y=90[/tex]
6 x minus 15 y = negative 63.
Negative 15 x + 15 y = 90
Answer:
It's A
Step-by-step explanation:
Got it right on the test
Write the inequality shown in the graph below:
Step 1) Identity two points on the boundary line.
Two such points are (0,7) and (1,5)
-----------------------------
Step 2) Find the slope of the line through those two points
m = (y2-y1)/(x2-x1)
m = (5-7)/(1-0)
m = -2/1
m = -2
The slope is -2
-----------------------------
Step 3) Use the point slope form to get the y = mx+b form
y - y1 = m(x - x1) ..... point slope form
y - 7 = -2(x - 0)
y - 7 = -2x
y = -2x+7
A quicker way is to just note that 7 is the y intercept as visually shown, so b = 7. Which allows us to go from y = mx+b to y = -2x+7
-----------------------------
Step 4) The boundary line is y = -2x+7. This is a dashed line so we will use either a less than sign, or a greater than sign. There will be no "or equal to" as part of the inequality sign.
The shaded region is below the dashed boundary line, so we use a less than sign.
Change y = -2x+7 into y < -2x+7
----------------------------
Step 5) Change into standard form (optional)
y < -2x+7
2x+y < 7 ... add 2x to both sides
==========================================
Final Answer: y < -2x+7 or 2x+y < 7The answer will depend on if you want slope intercept form or standard form.
Write the converse of the statement below ⬇
.If this month is February, then the next month is March
Each weekday Davina rides her bike from her house to school. After school, she rides to the library. Then Davina takes the same
route to get home. These locations are shown on the grid below, where 1 unit on the grid represents 1 kilometer.
How many kilometers does she ride each day?
10
16
20
32
Answer:
20 km
General Formulas and Concepts:
Algebra I
Reading a Cartesian PlaneStep-by-step explanation:
We can disregard the length of the line from the Library and the House, as Davina does not use that path at all.
We know that 1 unit on the grid represents 1 km. We define the lengths of the route from the graph:
Davina's House to School = 4 units = 4 km
School to Library = 6 units = 6 km
The entire trip Davina takes from House to Library would be 4 km + 6 km = 10 km total.
We also know that Davina takes the same route back from the Library to House. It would be the same exact route and length. Therefore:
2(10 km) = 20 km total
Answer:19.200
Step-by-step explanation:
19.200x1=19.200
What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid?
Answer:
The effect of doubling all the dimensions of a triangular pyramid will have on the volume of the pyramid is to increase it by 8 times.
Step-by-step explanation:
i) volume of triangular pyramid = [tex]\frac{1}{3}[/tex] [tex]\times[/tex] Area [tex]\times[/tex] height
= [tex]\frac{1}{3}[/tex] [tex]\times[/tex] (Base of triangle [tex]\times[/tex] perpendicular height of triangle) [tex]\times[/tex] height
ii) if we double all the dimensions then the three variables((Base of triangle, perpendicular height of triangle, height of pyramid) will be doubled
and the volume of the new pyramid will be 8 times that of the original one.
A tree is growing at a rate of 36 feet every 3
years. When it was planted it was only 5 feet
tall. If the tree is now 77 feet tall, write and
solve an equation to find how many years (y)
the tree has been growing
well, we know the tree is growing at a rate of 36 feet every 3 years, how many feet is that in 1 year alone? well, simply 36/3 = 12.
so the tree is growing 12 feet per year.
when it was first planted, it was 5 feet tall, and then after every year, we have to add 12 feet subsequently, let's do that
year 1 .......... 5 + 12(1)
year 2 .......... 5 + 12(2)
year 3 .......... 5 + 12(3)
year 4 .......... 5 + 12(4)
year 5 .......... 5 + 12(5)
year 6 .......... 5 + 12(6)
year 7 .......... 5 + 12(7)
year y .......... 5 + 12(y)
[tex]\bf \stackrel{\textit{height}}{h}~~=~~\stackrel{\textit{initial height}}{5}~~+~~\stackrel{\textit{yearly rate}}{12y} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{tree is now}}{77} = 5 + 12y\implies 72=12y\implies \cfrac{72}{12}=y\implies \boxed{6=y}[/tex]
sin K =
A. 1/2
B. (√3)/3
C. 2√3
D. 2
Answer:
( sin K = 1/2 ) would be right
Evaluate the expression
80 + (8 x 4) ÷ 2
Answer:
[tex]80 + (8*4)/2[/tex] [tex]=96[/tex]
Step-by-step explanation:
Given :
80 + (8 x 4) ÷ 2
[tex]80 + (8*4)/2[/tex]
This expression can be written in form of:
[tex]80+\frac{(8*4)}{2}[/tex]
Solving the expression further:
[tex]80+\frac{32}{2}[/tex]
[tex]=80+16[/tex]
[tex]=96[/tex]
So the value of the above expression after solving is 96
I am doing multiples rational expressions, if the equation is 5/2x + 1/4 = 9/2x what is the LDC and can you further explain the LDC to me?
Answer:
The answer is x = 8.
Step-by-step explanation:
LCD is the least common denominator of fractions. LCD represents the smallest number that can be used as a common denominator for a particular set of fractions.
The given equation is [tex]\frac{5}{2x} + \frac{1}{4} = \frac{9}{2x}[/tex]
Here we can take LCD as 4x because 4x is divisible by 2x as [tex]\frac{4x}{2x} = 2[/tex], 4x is divisible by 4 as [tex]\frac{4x}{4} = 1[/tex]
therefore we can write
[tex]\frac{5}{2x} + \frac{1}{4} = \frac{9}{2x} \hspace{0.2cm} \Rightarrow \hspace{0.2cm} \frac{10}{4x} + \frac{x}{4x} = \frac{18}{4x} \hspace{0.2cm} \Rightarrow \hspace{0.2cm} \frac{x + 10}{4x} = \frac{18}{4x}[/tex]
now we can eliminate the LCD from both sides of the equation and we get
x + 10 = 18 [tex]\therefore[/tex] x = 18 - 10 [tex]\therefore[/tex] x = 8.
Find the approximate length of segment AC. Math item stem image CLEAR CHECK 5.74 units 8.06 units 11 units 65 units
Answer:
[tex]\large\boxed{\large\boxed{8.06units}}[/tex]
Explanation:
The figure is a right triangle with:
hypotenuse = segment ACvertical leg = 7 unitshorizontal leg = 4 unitsHence, you must use Pythagora's theorem, which is valid for all right triangles:
[tex]hypotenuse^2=(leg_1)^2+(leg_2)^2[/tex]
Substituting the data:
[tex]hypotenuse^2=(7unit)^2+(4unit)^2=49unit^2+16unit^2=65unit^2[/tex]
Square root both sides:
[tex]hypotenuse=\sqrt{65unit^2}=8.06unit[/tex]
Answer:
8.06
Step-by-step explanation:
Mona stopped at a gas station where the price per gallon was $2.80. She spent $14 to fill up her car. What equation would represent how much gas Mona purchased? How many gallons of gas did Mona purchase? If Mona’s car gets 20 miles per gallon, how many miles did she drive since the last time she filled up her tank?
Answer:
1. A
2. A
3. D
Step-by-step explanation:
Stay safe❤️
Mona purchased 5 gallons of gas and 5 gallons of gas would give her 100 miles of driving.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Given that Mona stopped at a gas station where the price per gallon was $2.80
Mona spent $14 to fill up her car.
We need to find the equation would represent how much gas Mona purchased.
2.8x = 14 is the equation
Divide both sides by 2.8
x=5
Mona purchased 5 gallons of gas.
Now multiply 5 by the price per gallon of $2.80
5×2.8=14
Since Mona's car gets 20 miles per gallon, 5 gallons of gas would give her 100 miles of driving.
Hence, Mona purchased 5 gallons of gas and 5 gallons of gas would give her 100 miles of driving.
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PLEASE HELP , TRYING TO BE ON HONOR ROLL !
What is the solution to this system of equations?
3x + 6y = 1
x - 4y = 1
A. ( 0, -1/4)
B. (2/9 , 1/18)
C. (1/2 , -1/8)
D. (5/9, -1/9)
Option A
The solution is [tex](0, \frac{-1}{4})[/tex]
Solution:
Given system of equations are:
3x + 6y = 1 ------ eqn 1
x - 4y = 1 ------ eqn 2
We have to find solution to system of equations
We can use substitution method
From eqn 2,
x = 1 + 4y -------- eqn 3
Substitute eqn 3 in eqn 1
3(1 + 4y) + 6y = 1
3 + 12y + 6y = 1
18y = 1 - 3
18y = -2
Divide both sides by 18
[tex]y = \frac{-2}{18}\\\\y = \frac{-1}{4}[/tex]
Substitute the above value of y in eqn 3
[tex]x = 1 + 4 \times \frac{-1}{4}\\\\x = 1-1\\\\x = 0[/tex]
Thus solution is [tex](0, \frac{-1}{4})[/tex]
Find the number of sides of a polygon who’s interior angles add up to 3780
Set up this equation: 180(n-2)=3780
n is the number of sides of the polygon
Solved:
180(n-2)=3780
n-2=21
n=23
So the polygon will have 23 sides, also called a 23-gon
Hope this helped!
What is the measure of angle 2
The angle above 111 degrees must be 69 degrees because of supplementary angles (111+69=180)
And since the triangles are congruent, angle 2 must be 69 degrees as well.
Hope this helped.
what set of angles are not congruent
At how many points does the graph of the function below intersect the x-
axis?
y = 4x2 - 6x +1
Apex
Answer:
2 points
Step-by-step explanation:
Answer:
THE ANSWER IS 2 POINTS
Step-by-step explanation:
A
P
E
X