3 years ago

Is this problem right?

Mathematics

1 answer:

Andrews [41]3 years ago

6 0

Yes those are right. all the steps and answers are correct.

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Evaluate the function f(r) = √r + 1 - 1 at the given values of the independent variable and simplify.

neonofarm [45]

Step-by-step explanation:

I'm going to assume you meant to write $\sqrt{r+1}$ in the equation as +1 - 1 wouldn't make much sense since they would just cancel out.

a. $f(-1) = \sqrt{-1 + 1} - 1\\ f(-1) = \sqrt{0} - 1\\f(-1) = 0-1\\f(-1) = -1$

b. $f(24) = \sqrt{24 + 1} - 1\\ f(24) = \sqrt{25} - 1\\f(24) = 5 - 1\\f(24) = 4$

c. $f(x-1) = \sqrt{(x-1)+1} -1\\f(x-1) = \sqrt{x} - 1$

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1 year ago

The angle of elevation of the sun is 24°. What is the length of the shadow cast by a person 1.82 m tall?

amm1812

Answer:

4.09 m

Step-by-step explanation:

Let the length of the shadow cast by a person be x m.

$\tan \: 24 \degree = \frac{height \: of \: person}{length \: of \: the \: shadow} \\ \\ 0.4452286853 = \frac{1.82}{x} \\ \\ x = \frac{1.82}{0.4452286853} \\ \\ x = 4.08778693 \: m \\ x = 4.09 \: m$

7 0

3 years ago

PLEASE HELP, HELP ME!!!!

Andreas93 [3]

SA= 2(lw+lh+wh)
H=72
W=16
L=18

SA=2(288+1296+1152)
SA=5472 square inches

5,472 square inches will be painted

Hope you get help.

8 0

3 years ago

Tom had 3 times as many pencils than Max. Tom then gave 24 pencils to Max and they now had the same amount of pencils. How many

pav-90 [236]

Answer:

24×3=72

Sooo the answer 72✨

6 0

3 years ago

Find the area of the figure.

Lunna [17]

Answer:

25 square units

Step-by-step explanation:

just count them and each triangle is 1/2 a unit

6 0

2 years ago