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Zigmanuir [339]

3 years ago

12

A child standing 15 feet from the base of a lamppost casts a shadow 5 feet long. If the child is 4 feet tall and walks towards t

he lamppost at a speed of 10 feet per minute, at what rate, in feet per minute, will the length of his shadow be changing?

1 answer:

Ber [7]3 years ago

3 0

Step-by-step explanation:

Below is an attachment containing the solution.

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Which of the follow is is trinomial

sasho [114]

Answer:

A. 3x^2 + 4x + 1

Step-by-step explanation:

A is the correct answer because there are three terms within the trinomial

6 0

3 years ago

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Simplify to a single power of 4:<br> 4^7/4^6

Temka [501]

Step-by-step explanation:

$\frac{ {4}^{7} }{ {4}^{6} }$

= 4

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4 0

3 years ago

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I will give brainliest answer

adell [148]

Answer: A=351.68 cm²

Step-by-step explanation:

To find the area of the shaded region, we would subtract the area of the circle by the area of the inner circle.

Area of Circle

$A=\pi r^2$

$A=\pi (11)^2$

$A=121\pi$

Area of inner (white) circle

$A=\pi r^2$

$A=\pi (3)^2$

$A=9\pi$

Now that we have the area to the circle and inner circle, we would subtract to find the area of the shaded region.

$A=121\pi -9\pi$

$A=112\pi$

$A=351.68 cm^2$

3 0

3 years ago

3. if y varies directly as x and y=23.1 when x=36.3, find y when x=11.

STatiana [176]

Answer:

the answer is 5 because thats the varible

Step-by-step explanation:

8 0

3 years ago

4. The following intervals were plausible population proportions for a given sample. Find the margin of error in each case.

Vedmedyk [2.9K]

Answer: a. 0.15 b. 0.03 c. 0.055 d. 0.05

Step-by-step explanation:

For plausible intervals of population proportions , the margin of error is basically half of the difference between upper limit and lower limit.

a. Interval = From 0.35 to 0.65

Upper limit = 0.65

Lower limit = 0.35

Difference = Upper limit- Lower limit

= 0.65-0.35=0.30

Margin of error = (Difference)÷2 =(0.30)÷2=0.15

b. Interval = From 0.72 to 0.78

Upper limit = 0.78

Lower limit = 0.72

Difference = 0.78-0.72 = 0.06

Margin of error =(0.06)÷2=0.03

c. Interval = From 0.84 to 0.95

Upper limit = 0.95

Lower limit = 0.84

Difference =0.95-0.84= 0.11

Margin of error = (0.11)÷2 = 0.055

d.Interval = From 0.47 to 0.57

Upper limit = 0.57

Lower limit = 0.47

Difference = 0.57-0.47=0.10

Margin of error = (0.10)÷2=0.05

3 0

3 years ago