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Katen [24]
4 years ago
5

I need help with #5 the multiple choice one !!!! I don't understand

Mathematics
1 answer:
Tpy6a [65]4 years ago
5 0
D, the answer choice c is wrong because it is not written properly 
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What is the circumference of a circle with a diameter of 9 inches? (use 22/7 for pi)
cupoosta [38]

Answer:

28 inches

Step-by-step explanation:

The circumference is given by

C = pi *d

C = 22/7 ( 9)

C =198/7

    =28.28571429 inches

5 0
3 years ago
8)
zepelin [54]

Answer:

Multiply the first equation by 3 and multiply the second equation by -2.

This is justified by the multiplication property of equality

Step-by-step explanation:

we have

2x+5y=7 ----> first equation

3x+4y=6 ----> second equation

step 1

Multiple the first equation by 3 both sides

3(2x+5y)=3(7) -----> by multiplication property of equality

6x+15y=21 ----> new first equation

step 2

Multiple the second equation by -2 both sides

-2(3x+4y)=-2(6)  -----> by multiplication property of equality

-6x-8y=-12 ----> new second equation

step 3

Solve the system of equations by elimination

Adds new first equation and new second equation

6x+15y=21\\-6x-8y=-12\\-------\\15y-8y=21-12\\7y=9\\y=\frac{9}{7}

Find the value of x

substitute the value of y in any equation and solve for x

6x+15y=21

6x+15(\frac{9}{7})=21

6x=21-\frac{135}{7}

6x=\frac{12}{7}

x=\frac{2}{7}

The solution is the point (\frac{2}{7},\frac{9}{7})

therefore

Multiply the first equation by 3 and multiply the second equation by -2.

This is justified by the multiplication property of equality

8 0
3 years ago
Read 2 more answers
A(5, 23) and B(-2, 2) are two points.<br>(a) Find the co-ordinates of the midpoint of the line AB.​
ch4aika [34]

Answer:

The midpoint of (5,23) and (-2,2) is (3/2,25/2)

hope that helps

Step-by-step explanation:

5 0
3 years ago
Question 1: A square garden has a side length of 14.5 feet. What is the area of the garden?
goldfiish [28.3K]

Answer:

58 ft

216

6.6

20

12

Step-by-step explanation:

5 0
3 years ago
PLEAS HELP (no links or reported) I will give brainleast!
jeka94

Answer:

84 ft^2

Step-by-step explanation:

Rectangle 1: Area = l x w = 3x6=16

Rectangle 2: 4x6= 24

Rectangle 3: 5x6=30

Triangle 1: A = 1/2 b x h = 1/2 x 4 x 3 = 6

Triangle 2: 1/2 x 4 x 3 = 6

Total = 16+24+30+6+6 = 84

5 0
3 years ago
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