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3 years ago

Solve for y: x=5y-3

Mathematics

2 answers:

kobusy [5.1K]3 years ago

7 0

X=5y-3
-5y=-x-3
5y=x+3
y=x/5 + 3/5

mr Goodwill [35]3 years ago

5 0

Answer:

Step-by-step explanation

X=5y-3

Add 3 to both sides

X+3=5y-3+3

X+3=5y

Divide both sides by the coefficient of y

X+3/5=5y/5

Y= X+3/5

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Joshua is 1.45 meters tall. At 2 p.m., he measures the length of a tree's shadow to be 31.65 meters. He stands 26.2 meters away

Lena [83]

Answer:

The height of the tree=8.42 m

Step-by-step explanation:

We are given that

Height of Joshua, h=1.45 m

Length of tree's shadow, L=31.65 m

Distance between tree and Joshua=26.2 m

We have to find the height of the tree.

BC=26.2 m

BD=31.65m

CD=BD-BC

CD=31.65-26.2=5.45 m

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All right triangles are similar .When two triangles are similar then the ratio of their corresponding sides are equal.

$\triangle ABD\sim \triangle ECD$

$\frac{AB}{EC}=\frac{BD}{CD}$

Substitute the values

$\frac{AB}{1.45}=\frac{31.65}{5.45}$

$AB=\frac{31.65\times 1.45}{5.45}$

$AB=8.42m$

Hence, the height of the tree=8.42 m

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3 years ago

1. Express 14/100 as a negative exponent.

Jet001 [13]

Step-by-step explanation:

Number 1

$= \frac{14}{100}$

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$\:$

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Step-by-step explanation:

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