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maks197457 [2]
3 years ago
10

Use substitution to solve the system.-3x+ 5y = 22x = 37-14x6?​

Mathematics
1 answer:
DaniilM [7]3 years ago
5 0

Answer:

y=18.2

Step-by-step explanation:

-3x+5y=22

-3(37-14)+5y=22

-69+5y=22

5y=91

y=18.2

check:

-3(37-14)+5(18.2)=22

-69+91=22

22=22

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There are 60 students in a speech contest. Yesterday, 2/3 of them gave their speeches. Today, 3/5 of the remaining students gave
blsea [12.9K]

Answer:

2\3x60=40

3\5x20=12

12+40=52

60-52=8

6 0
3 years ago
The shoes cost $200 with a sales tax of<br> 7.5%, How much is the total Costs?
azamat
The shoes after a 7.5% tax is going to be 215 200/7.5 + 200 = C
4 0
3 years ago
Read 2 more answers
Help!!!!! please!!!!!
defon

Answer:

The answer is option b.

<h2>144π</h2>

Step-by-step explanation:

Surface area of a sphere is 4πr²

where r is the radius

diameter = radius / 2

<h3><u>For Big </u><u>sph</u><u>ere</u></h3>

radius = 15 / 2 = 7.5in

Surface area = 4π(7.5)²

= 225π

<h3><u>Small </u><u>sph</u><u>ere</u></h3>

radius = 9/2 = 4.5in

Surface area = 4π(4.5)²

= 81π

Difference of the surface areas is

Surface area of big sphere - surface area of small sphere

Which is

225π - 81π

<h3>= 144π</h3>

Hope this helps you.

6 0
4 years ago
7 + (10 − 4)2 ÷ 4 × 1\8
natta225 [31]
I’m pretty sure the answer is 12

6 0
3 years ago
1/3 x + 1 = 5/6 x - 3
mr Goodwill [35]

Answer:

x=8

Step-by-step explanation:

Step 1: Subtract 5/6x from both sides.

1/3x+1−5/6x=5/6x−3−5/6x

−1/2x+1=−3

Step 2: Subtract 1 from both sides.

−1/2x+1−1=−3−1

−1/2x=−4

Step 3: Multiply both sides by 2/(-1).

(2/−1)*(−1/2x)=(2/−1)*(−4)

x=8

4 0
3 years ago
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