3 years ago

Can you please help me please

Mathematics

2 answers:

Zinaida [17]3 years ago

7 0

The scale factor is 2 so

r-ruslan [8.4K]3 years ago

5 0

Answer:

Scale factor of 2

Hope that helps!

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15x+5y=30 with y by itself

SCORPION-xisa [38]

Answer:

15 x 1 + 5 x 3 = 30

Step-by-step explanation:

If you turn the x into a one then it multiplies 15 by one and then it remains at 15, then you multiply 5 and 3 so that's 15 and then 15 + 15 is 30.

3 0

4 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.

$\frac{20}{5}=\frac{x+y}{x}$

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

$4x=x+y$

$4x-x=y$

$3x=y$

$3\frac{dx}{dt}=\frac{dy}{dt}$

$\frac{dx}{dt}=\frac{1}{3}(-10)=-\frac{10}{3}ft/s=-\frac{10}{3}ft/s$

Hence, the rate of change of the length of his shadow when he is 25 ft from the street light= $-\frac{10}{3}ft/s$

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3 years ago

Which expression is equivalent to the given expression?

Tatiana [17]

Answer:

The answer is 4a-12

Step-by-step explanation:

Hope this helped :>

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3 years ago

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Given f(x) = 4x - 6, evaluate f(3). A. 2 B. 1 C.12 D. 6

Dima020 [189]

Answer:

Step-by-step explanation:

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3 years ago

PLEASE HELP FAST!!!! Fill in the blanks Solve using the elimination method

Rainbow [258]

Answer: Look below

Step-by-step explanation:

1(10x-6y)=-16

3(5x+2y)=66

10x-6y=-16

15x+6y=66

-25x=50

x=-2

6 0

3 years ago

Can you please help me please ​

Can you please help me please