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evablogger [386]
4 years ago
8

A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.

Mathematics
1 answer:
Sphinxa [80]4 years ago
5 0

Answer:

C.) subtract to eliminate y

Step-by-step explanation:

Given

9x - 2y = -75

2x - 2y = -12

Subtract to eliminate y

-2y - (-2y) = -2y + 2y = 0

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the area of a square garden is 267 ft^2 what is the side length of each side? round your answer to the nearest hundredth place.
aksik [14]

Answer:

  • Side Length=16.34 ft
  • No

Step-by-step explanation:

The area of the square garden=267$ ft^2

Area of a Square of Side length s =s^2

Therefore:

s^2=267$ ft^2\\$Take the square root of both sides\\s=\sqrt{267} \\$Side Lenght, s=16.34 ft (to the nearest hundredth place)

<u>Perimeter</u>

Perimeter of a Square of Side length s=4s

Therefore, the perimeter of the garden =4*16.34=65.36 ft

Since 65 ft < 65.36 ft

Therefore, if you had 65 ft of fencing, it will not be enough to go around and cover the garden.

5 0
3 years ago
A lifeguard on the shore in a chair that is 6 ft above the ground. She sees a swimmer at an angle of depression of 10°. About ho
melisa1 [442]

Answer:

  34 ft

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relationship between adjacent and opposite sides of a right triangle and the trig function of the associated angle. Here, the relevant relation is ...

  Tan = Opposite/Adjacent

  tan(10°) = (height of lifeguard)/(distance from shore)

Then the distance from shore is ...

  distance from shore = (height of lifeguard)/tan(10°) ≈ (6 ft)/(0.17633)

  distance from shore ≈ 34 ft

3 0
3 years ago
If the point (a, 7) lies on the graph of the equation 5x - y = 8, then a= -3 3 1/5 plz help
aksik [14]

Answer:

a = 3

Substitute the value of point (a,7) in the equation and solve for a

5(a)-7=8

5(a)=8+7

5(a)=15

a = 15/5 = 3

God Bless and stay safe!

- Eli <3

8 0
3 years ago
What is the simplest form of 12/64
lord [1]
For this question you can first divide by 2:
(12÷2)/(64÷2) so you will have 6/32 and then you can divide by 2 again so you will have 3/16 and that's the simplest form :)))
i hope this is helpful 
have a nice day 
7 0
3 years ago
Read 2 more answers
I can re-write an equation from Standard Form to Slope-Intercept Form. 4x + 3y = -6​
tatiyna

Answer:

well good for you

Step-by-step explanation:

3 0
3 years ago
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