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Bess [88]
3 years ago
11

Jacob made a circle-shaped poster for his geometry class.

Mathematics
1 answer:
krok68 [10]3 years ago
5 0
<span>circumference is L=2\pi r
L=2π9=18π=18*3.14=56.52 in
Answer:  </span>circumference is <span>18π or 56.52 in</span>
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Substitution method<br> x=2y<br> 2x+5y=4
Dvinal [7]

Answer:

y=4/9

Step-by-step explanation:

Substitute 2y into the x

2(2y)+5y=4

4y+5y=4

9y=4

y=4/9

6 0
2 years ago
A 9 3/5 inch long pipe is cut into eight equal length pieces. How long is each piece?
Alenkinab [10]

Answer:

1.2

Step-by-step explanation:

9 3/5 divided by 8


3 0
3 years ago
Why do we use the distributive property when subtracting expressions?
pochemuha

Consider the example

(3x+5) - (x-10)

When we subtract off the (x-10), we are basically subtracting off x and also subtracting off -10. This is the same as adding on 10 because -(-10) = 10

So we would have these steps

(3x+5)-(x-10)

3x+5-x+10

2x+15

Often students forget to distribute the negative all the way through and would have 3x+5-x-10 as an incorrect step. You need to multiply that -1 through to each term, so that's why the distributive property is used.

3 0
2 years ago
Read 2 more answers
a trapezoide has an area of 150 square meters. If the bases are 14 meters and 16 meters, what is the height of the trapezoid​
SIZIF [17.4K]

Answer:

h = 10 m

Step-by-step explanation:

The formula for area of a trapezoid is  

A = (1/2)(B + b)h   where B is the bottom base, b is the top base, and h is the height.  

We are given B = 16, b = 14, and A = 15, plug those values in and simplify

150 = (1/2)(16 + 14)(h)

      150 = (1/2)(30)(h)

          150 = (15)h             (half of 30 is 15)

                10 m =  h       (divide both sides by 15 to isolate h)

6 0
3 years ago
Can someone help pls
svet-max [94.6K]

Answer: y-4=0

Step-by-step explanation:

7 0
3 years ago
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