3 years ago

An 80-foot flagpole casts a 100-foot shadow. What is the length of a shadow if a 5-foot tall child stands beside the flagpole?

Mathematics

1 answer:

kherson [118]3 years ago

6 0

Answer: The child's shadow would be 6.25 feet.

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What is the answer to -7d-22=4d?

Juliette [100K]

First add 7d to both sides:
-22 = 11d
Now divide by 11 both sides
-2 = d

You can work on either side of the equation, I used the right side for the variables because it was easier to add to positive numbers than dealing with negative numbers on the left side:
-7d -4d = 22
-11d =22
d = -2

either way you get the same answer :)

4 0

3 years ago

Collin did the work to see if 10 is a solution to the equation r/4=2.5

Natasha2012 [34]

Answer:

Yes, because if you substitute 10 for r in the equation and simplify, you find that the equation is true.

Step-by-step explanation:

$\frac{r}{4} = 2.5 \\ lhs = \frac{r}{4} \\ = \frac{10}{4} \\ = 2.5 \\ = rhs \\ \therefore \: \frac{r}{4} = 2.5 \\$