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4vir4ik [10]
3 years ago
15

Solve the equation for y: 2x + 5y = 20

Mathematics
2 answers:
lbvjy [14]3 years ago
6 0

Answer:

y = \frac{20-2x}{5}

Step-by-step explanation:

Given

2x + 5y = 20 ( isolate the term in y by subtracting 2x from both sides )

5y = 20 - 2x ( divide both sides by 5 )

y = \frac{20-2x}{5}

navik [9.2K]3 years ago
4 0
The Answer will be y=4
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Solve for Y showing all work: y-8=13
Lyrx [107]
Y-8=13
y=13+8
y=21
Hope this helps!

7 0
3 years ago
An engineer needs to determine the distance across a river without swimming to the other side. The engineer notices a tree on th
nasty-shy [4]

Answer:

Step-by-step explanation:

The engineer can use a clinometer to measure the angle of elevation of the top of the tree. Let the height of the tree be represented by x, the she could determine the distance across the river, d, by applying the trigonometric function.

Tan θ = \frac{opposite}{adjacent}

           = \frac{x}{d}

the the distance, d = x ÷ Tan θ

Assume the angle of elevation of the top of the tree is 30^{o}, and the height of the tree is 10 m, then the distance, d, across the river would be;

d = \frac{10}{0.5774}

  = 17.3190

d = 17.32 m

The sketch to the explanation is attached to this answer for more clarification.

4 0
3 years ago
I need help on this what is RS
lana [24]

Answer:

11

Step-by-step explanation:

If RS=TV

5x-9=2x+3

5x-2x=3+9

3x=12

x=4

RS is 5x-9

5(4)-9

20-9

11

6 0
2 years ago
Given the literal equation ab/a+b = c , with b = –1 + a, what is the value of c if a = 5?
Nesterboy [21]

The solution would be like this for this specific problem:

ab/a+b = c 

b = -1 + a

for c:
<span>(5(-1 + 5))/(5 + (-1 +5))
</span><span>5(4)/ 5 + 4
</span><span>20 / 9
</span>

<span>The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.</span>



3 0
3 years ago
Read 2 more answers
Use the picture to answer. Which real number is not both a whole number and an integer? A. 423 B. 259 C. –156D. 0
Semmy [17]
Um A :)
hope this helps :)))))))))))))

8 0
3 years ago
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