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1 year ago

Solve for y:5x-8y=40

Mathematics

1 answer:

bearhunter [10]1 year ago

3 0

Solve for y means we need to isolate y from the equation:

We need to use inverse operations to solve equations:

$\begin{gathered} 5x-8y=40 \\ -8y=40-5x \\ y=\frac{-5}{-8}x+\frac{40}{-8} \\ y=\frac{5}{8}x-5 \end{gathered}$

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Answer:

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Step-by-step explanation:

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2 years ago

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Phoenix [80]

Answer:

Explanation to answers are shown in the attachment

Step-by-step explanation:

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3 years ago

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Eddi Din [679]

Answer:

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Step-by-step explanation:

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i hope ti helps you

3 0

3 years ago

Anyone able to help with this question?

ELEN [110]

Answer:

This is trigonomentry

Use SOHCAHTOA

where :

s is sin

c is cos

t is tan

o is opposite (side)

h is hypotenuse (opposite of 90 degree angle)

and a is adjacent (side)

Sin = o/h

cos = a/h

tan = o/a

in this case we are looking for side BC which is the hypotenuse(h)

and we have the side adjacent(a) to angle 71

since we have a and h determine what to use SIN, COS, OR TAN?

we should use Cos

they‘ve given the angle so we should do this...

Cos71 = $\frac{6.3}{h}$

Cos71 = $\frac{6.3}{BC}$

now apply algebra...

6.3/cos71= BC

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lord [1]

Answer:

it could either be 35 or 70

Step-by-step explanation:

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