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4 years ago

Find the variable y2x+4y=8

Mathematics

2 answers:

crimeas [40]4 years ago

7 0

FOUND IT!!! It is next to the 4
Hope that helped!!!

Aneli [31]4 years ago

4 0

Hello!

So you need to isolate the y variable:

4y = 8 - 2x

Now divide both sides by 4 to get the y alone:

y = 2 - 1/2x

Hope this helps :))

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21x =7? A. x=3 B. None of these C. x=147 D. x=28

Varvara68 [4.7K]

Answer: B

Step-by-step explanation:

To isolate x, you divide both sides by 21

21x=7

$\frac{21x}{21}=\frac{7}{21}$

x = 7/21

Simplify by dividing both the numerator and denominator by 7

x = 1/3

Since, 1/3 is not an option, B is the correct answer

6 0

2 years ago

How many 1/5s are in 1?

atroni [7]

Answer:

Step-by-step explanation:

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3 years ago

If y varies inversely as x and y=16 when x=4, find y when x=3

iren [92.7K]

Answer:

21.33 to nearest hundredth

Step-by-step explanation:

Inverse Variation is y = k / x where k is a constant.

Plug in the given values to find k:-

16 = k/4

k = 4*16 = 64 so the equation of variation is y = 64/x.

So when x = 3, y = 64/3 = = 21.33 to nearest hundredth.

6 0

4 years ago

Find the surface area of a right prism whose bases are equilateral triangles with side lengths of 6in. The height of the prism i

vesna_86 [32]

ANSWER

$211.2 {in}^{2}$

EXPLANATION

The surface area of a triangular prism is

equal to the area of two triangular faces

plus the area of the three rectangular faces.

The area of the equilateral triangle is calculated using the formula:

$= 2 \times \frac{ \sqrt{3} }{4} {s}^{2} + 3 \times \: bh$

where s=6 is the length of one side.

and b=6 is the breadth of the rectangle and h=10 is the height of the rectangle.

Surface area

$= 2 \times \frac{ \sqrt{3} }{4} \times {6}^{2} + 3 \times \: 6 \times 10$

$= 18\sqrt{3} + 180$

=211.2square inches.

8 0

3 years ago

How to do this problem. I need help How to solve the e

Radda [10]

The answer is 6*2-6. I hope this helps u

5 0

4 years ago