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2 years ago

Help with this question plz I need the answer plz help me plz

Mathematics

2 answers:

AnnyKZ [126]2 years ago

5 0

Answer: C. 1/3

Step-by-step explanation:

⇒ it's C 1/3 because A and B is the same thing and D. is also similar because you're just putting 45 to 15 into a fraction which is the same. But C. does not represent ratio 45 to 15.

*<em>Hope this helps:) ) Mark me the brainliest.</em>

olga nikolaevna [1]2 years ago

4 0

Answer:

Step-by-step explanation:

45:15=3:1 not 1:3

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3 years ago

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g A 5 foot tall man walks at 10 ft/s toward a street light that is 20 ft above the ground. What is the rate of change of the len

vredina [299]

Answer:

$-\frac{10}{3}ft/s$

Step-by-step explanation:

We are given that

Height of man=5 foot

$\frac{dy}{dt}=-10ft/s$

Height of street light=20ft

We have to find the rate of change of the length of his shadow when he is 25 ft form the street light.

ABE and CDE are similar triangle because all right triangles are similar.

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$4=\frac{x+y}{x}$

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2 years ago

Simplify the rational expression. State any restrictions on the variable.

AveGali [126]

Answer:

The last choice.

Step-by-step explanation:

$\dfrac{k^2-k-2}{k^2-4k-5}=\dfrac{(k+1)(k-2)}{(k+1)(k-5)}=\dfrac{k-2}{k-5}$

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2 years ago

6.<br> Simplify the expression.<br> (-3)-4

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Answer:

-7

Step-by-step explanation:

Re-write: -3 - 4
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I hope this helps!

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3 years ago

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The length of a side of a triangle is 26 in. A line, parallel to the given side ,divides the triangle into 2 parts of equal area

lubasha [3.4K]

Answer:

13√2

Step-by-step explanation:

The areas of the larger triangle, and the smaller triangle (formed when the larger triangle was cut by the parallel line) are similar. Therefore we can compare their areas:

Area1/Area2 = (Length1)^2/(Length2)^2,

x/2x = (Length1)^2/(26)^2,

1/2 = (Length1)^2/676,

(Length1)^2 = 676/2 = 338

Length1 = √1352 = 13√2

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2 years ago