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snow_lady [41]
3 years ago
9

A street light is 21 feet high and casts a 40-foot shadow. At the same time, a cell-phone

Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0

Answer:

21/H = 40/57

Step-by-step explanation:

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identify an equation in point-slope form for the line that is parrallel to y=1/2x-7 that passes through (-3,-2)​
Katarina [22]

Answer:

The correct answer would be D. y+2=1/2(x+3)

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Point slope form can be written as y-y1=m(x-x1)

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Then we can replace x1 with -3, resulting in x--3 or x+3.

So our resulting equation is:

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8 0
3 years ago
Simplify completely 25 w to the sixth power over 10 w to the third power divided by 30 w squared over 5 w.
Amiraneli [1.4K]
<span>25 w to the sixth power over 10 w to the third power divided by 30 w squared over 5 w.

25w</span>⁶ / 10w³  ÷ 30w² / 5w

Get the reciprocal of the 2nd fraction and multiply it with the 1st fraction

25w⁶ / 10w³   * 5w / 30w² → 25w⁶ * 5w / 10w³ * 30w² = 125w⁷ / 300w⁵ 

*When you multiply exponents with the same base, you simply add them.
w⁶ * w = w⁶⁺¹ = w⁷
w³ * w² = w³⁺² = w⁵

Cancel out w⁵
<span>125w⁷ / 300w5 </span>= 125w² / 300

Simplify the constant:
125 / 25 = 5
300 / 25 = 12

5w² / 12    is the simplified form of the given equation. 
7 0
3 years ago
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