Mathematics Middle School

Jake cuts out five-pointed stars. They are different sizes, but they all have the same shape. The side lengths within each star are the same. To find the perimeter of each star, Jake uses the expression 12 L + 1/2 - 4 L - 8.5 + 2 L + 8, where L is the side length of the star. a. find the perimeter of a star with side length of 6 inches. Show your work. b. check your answer to problem a. Show your work.

Answers

Answer 1

60 I think I am not 100%

Related Questions

Help, please I really want to get a good grade

Answers

Answer:

this is khanacadamy it doesn't count!

Step-by-step explanation:

aloha! Makemake au i kōkua me kēia nīnau: Inā he ʻumi mau ʻāpala ʻo jimmy a ʻai kāna hoa i 15 mau ʻāpala he aha ka mea e waiho ai iā jimmy?

Answers

Answer: -5

Step-by-step explanation: unless she ate her own apples the he still has 10

The area of a circle is 64π m². What is the circumference, in meters? Express your answer in terms of \piπ.

PLS PUT ANSWER THATS RIGHT OR A ANSWER THAT SHOWS YOU TRYED

Answers

Answer: i got c= 28.36m²

Step-by-step explanation:

A=πr2

C=2πr

Solving for C

C=2πA=2·π·64≈28.35926

What is the number of terms in this expression?

m/5+4⋅6

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Answer:

I think the answer is two but I could be wrong

there are two terms in the expression

Please help me with this one too lol.

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Answer:

Step-by-step explanation:

A circular running track is 14 mile long. Elena runs on this track, completing each lap in 120of an hour. What is Elena’s running speed? Include the unit of measure.

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Answer:

Step-by-step explanation:

Alright, so apparently super fast Elena can run 14 miles in 120th of an hour, so you would have to multiply 14 by 120 which is 1680

This girl can run 1680 miles per hour

Find the average rate of change for f(x)=-4x² over the interval -4≤x≤-2. Enter your answer as a number. *

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Answer:

Step-by-step explanation:

The Barrel in Problems 4 is 5 feet long and the radius of its base is 1.5 feet.

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The answer that you are look big for would be 39.829 feet.

What is the volume, in cubic centimeters, of a cylinder with a height of 12 centimeters and a base radius of 6 centimeters, to the nearest tenths place?

Please help :(

Answers

Answer:

1357.2

Step-by-step explanation:

volume = r^2 * pi * h

= 6^2 * pi * 12

=432pi

The volume of cylinder is 1357.17 cubic centimeter.

Formula to find the volume of cylinder:

V = base area × height

[tex]V=\pi \times r^{2} \times h[/tex], where r is the radius of circular base and h is the height of the cylinder.

For given example:

a base radius (r) = 6 cm,

a height of a cylinder (h) = 12 cm

Using the formula of volume of a cylinder,

[tex]V=\pi \times 6^{2} \times 12[/tex]

[tex]V=1357.17[/tex] cubic cm

Hence, the volume of a cylinder is 1357.17 cubic centimeter.

Learn more about volume of cylinder:

https://brainly.com/question/24084532

#SPJ2

Triangles ABC and RST are similar. Find ST.

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Set up;

(15^2)(CB) = (7.5^2)/(ST)

(15^2)/(5) = (7.5^2)/(ST)

Cross-multiply to find ST.

Write the equation of the line in slope-intercept form using y=mx+b

Answers

Answer:

y = 1/2x+2

Step-by-step explanation:

First find the slope using y1-y2 over x2-x1 picking two points, the two I am using are (0,2) and (2,3). Once I use the formula, the slope is 1/2. The Y intercept (b) is where the line intersects it. (0,2) You know it is the y intercept because the x coordinate is 0. So the final equation would be y=(slope)x+ (y-int) so FINAL ANSWER: y=1/2x+2

Shane has a piece of rope that is 7 4/5 units long. If he cuts it into pieces that are each 3/5 of a unit long, how many pieces does he have?

Answers

Answer:

13 pieces

Step-by-step explanation:

7 4/5 divided by 3/5 is equal to 13

Number of pieces = (7 4/5) / (3/5) = (39/5) / (3/5) = (39/5) x (5/3) = 13 pieces

help me please this is overdue

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Nope this helps :0
I have teaches a photo of how to do this...
Your answer is w7 ft

Look at the guys comments above me

only do the ones i have not done brainlest

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Answer:

I don't understand thia

Answer: 2. y = x times 2.5, 3. y = x - 10, 4. y = x times 6

Step-by-step explanation: I hope that this helps :)

A groundskeeper needs grass seed to cover a circular field, 290 feet in diameter.
A store sells 50-pound bags of grass seed. one pound of grass seed covers about 400 square feet of field.
What is the size of the field in square feet, to the nearest whole?

Answers

Answer:

66018.5 sq feet

Step-by-step explanation:

Area = πr²

To find the Radius R we need Diameter which 290 fee so:

R = Diameter / 2

R = 290/2

R = 145 ft

Now put values in Area Formula

Area = 3.14 x (145)^2

A = 66018.5 sq feet

121 is 44% of what number?

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^i got that same answer

The cost of producing an item is $250 at the break-even point. What is the income from selling the same item at the break-even point?

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i would say $250! can i have brainliest answer hehehe

I think the answer would be 250$

Circle the reason for each of the following manipulations used to simplify the product (8x^2) (3x^7) ?

Answers

Answer:

Running Home and the impact of point of view on events in the poem, “The Sailor.” Use specific examples from BOTH texts to support your answer.

CAN YOU TURN THIS PROMPT INTO A HOW OR WHY QUESTION??

_________________________________________________________

Step-by-step explanation:

Commutative, associative, exponent

1300 at 11.8% for 2 years

Answers

Answer:At the end of 2 years, your savings will have grown to $1,624.

You will have earned in $324 in interest.

Step-by-step explanation:

Answer:

306.8

Step-by-step explanation:

1300 x .118 = 153.4

153.4 x 2 = 306.8

Hope that helps!

A gym charges $10 per month for a membership and $3.00 for each cycling class . If Maria’s total bill for one month was $88.00 , how many classes did she take?

Answers

Answer:

Step-by-step explanation:

She took 29 classes in total

Answer:

26 classes

Step-by-step explanation:

first you do 88-10=78 then divide 78 by 3 which gives you 26

Please answer the question attached! Answers would be appreciated :)

Answers

Answer:

60 cm^3 is the volume

Answer:

132 squared cm

Step-by-step explanation:

Alright so assuming the this is a right angle, to find the area of a triangle you have to multiply LxW and divide by 2. 3x4=12/2=6. There are 2 triangles, so 6x2=12

And then to find the area of the rectangle on the bottom, 10x4=40

Next you find the area of the rectangle on the side: 3x10=30

And finally the one that’s slanted on the top: 5x10=50

Add them up and 12+40+30+50= 132

Plz help this is a true or false correct answer only question also giving the points it's worth

1. True or false: the interval used to create the histogram was 4

2 true or false: exactly half of the students that responded to the survey play video games for 10 or more hours

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Answer:

1.False

the intervals used to create the histogram is 5.5

2.True

more than 10 hours were used by the students in playing the games

The first one is false the second one is true

What is the measure of the unknown angle?

Answers

A. 145
EXPLANATION:
There are 2 angles in the picture.
Both angles mist add up to 180
Simply do 180 - 35 = 145.
Have a good day

It’s is 145. Just subtract 180-35.

Help please ill give brainy (7th grade math)

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Straight line through the origin, hope this helped

Answer:

the answer is straight through the origin

ples i need help asap

Answers

Answer:

Step-by-step explanation:

1. y = 3/2 x - 1

2. y = -2 x + 4

3. y = -3

4. x = 3

5. y = -5/9 x - 1

6. y = -2 x + 7

7. y = 16/5 x - 4

8. y = 8

9. y = -7 x + 5

10. y = -9 x - 2

Answer:

Step-by-step explanation:

Number 1s slope is 1/2, number 2 is -4/3. Number 3 is 0. Number 4 slope is also 0 i think. Number 5-10 im not sure

Hailey used 2 2/3 liters of cola to completely fill 2 bottles. If the bottles are all the same size, how many liters of cola does each bottle hold? Enter your answer below

Answers

Answer:

they each hold 1 1/3 litters of cola

Step-by-step explanation:

Because if there is 2 2/3 liters of cola

then you either divide it by 2

or you can look at it and see what would add evenly to make that number

in this case it would be 1 1/3

1 1/3 +1 1/3= 2 2/3

please mark me as brainliest

hope this helps!

PLEASE HELP ME WITH MY MATH (1-9)

Answers

1. X= 22
2. X= 57
3.X= 40
4. X= 15
5. X= 15
6. X= 84
7. X= 60
8.X= -26
9. X= 40

(You might want to double check, but I’m pretty sure these are the answers!)

Answer:

x = 14

Step-by-step explanation:

Answering #5 as requested

Sum of interior angles in the triangle is 180°.

Sum of the angles of the given triangle:

(2x + 8) + (5x) + 74 = 180

Solve for x:

2x + 8 + 5x + 74 = 1807x + 82 = 1807x = 98x = 14

Ricardo bought a bicycle for $98.00. He sold it to his friend Sandy for of the price he paid for it. Sandy then sold it to Jennifer for of the price she paid for it. How much did Jennifer pay for the bicycle?

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Answer:

$98

Step-by-step explanation:

13 points please help

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90 degrees in a right angle. skipping 12. a supplementary angle is 180 degrees. x is 30. complementary is 90. skip the one you answered. i think the next one is also 157. i’m skipping 16 i keep blanking out. hope i helped a little bit

12. X=20 16. X=19
Explanation: I worked it out

Please help I do not understand pleasee brainliest!

Answers

For answer 3 you take -4 you put it on -4 on the graph -6 you put it on -6 on the graph 0 you put it on 0 on the graph 3 you put it on 3 on the graph

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