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mylen [45]
3 years ago
11

Select the equivalent expression.

Mathematics
1 answer:
ANEK [815]3 years ago
5 0

Answer:

c

Step-by-step explanation:

\frac{1}{9^{2} }=1/81

9^{\frac{1}{2} } =3

\frac{1^{2} }{9}=\frac{1}{9}

9^{-2}=1/81

You might be interested in
Item 9 Find the annual interest rate. I=$562.50, P=$1500, t=5 yearsI=$562.50, P=$1500, t=5 years The annual interest rate is %.
Anton [14]
Hi there :-)
The formula of the simple interest is
I=prt
your question ask to find r which is interest rate you do that by dividing each side by (pt) to get
R=I÷pt
Now solve to get the interest rate
R=562.5÷(1,500×5)
R=0.075×100 multiply by 100 to get it as percentage
R=7.5%

Hope it helps:-)

4 0
3 years ago
Pls help WILL GIVE BRAINLIST
myrzilka [38]

Answer:

<u>135.94 feet</u>

Step-by-step explanation:

Split the problem into two parts :

  1. Distance between viewer and building
  2. Height of the top part of the building

<u>Distance between viewer and building</u>

  • The lower part of the building is 40 feet, as it is mentioned the viewer is 40 feet above street level
  • Let the distance be called 'd'
  • Therefore, tan37° = 40/d
  • tan37° = 3/4 = 0.75
  • ⇒ 40/d = 0.75
  • ⇒ d = 40/(3/4) = 40 x 4/3 = 160/3 = 53.3 feet

<u>Height of the top part of the building</u>

  • Let the height of the top part be 'h'
  • Therefore, tan61° = h/d = h/53.3
  • tan61° = 1.8
  • ⇒ h/53.3 = 1.8
  • ⇒ h = 53.3 x 1.8 = 95.94 feet

<u>Total height of building</u>

  • Lower part + Top part
  • 40 + 95.94
  • <u>135.94 feet</u>

<u />

3 0
2 years ago
(5, -12); m
SOVA2 [1]
This is not the answer but i love ur pfp
6 0
2 years ago
What is this answer and work shown please 5/2x -3 =2
Mars2501 [29]

Answer:

x = 2

Step-by-step explanation:

Given

\frac{5}{2} x - 3 = 2 ( add 3 to both sides )

\frac{5}{2} x = 5 ( multiply both sides by 2 to clear the fraction )

5x = 10 ( divide both sides by 5 )

x = 2

5 0
3 years ago
Read 2 more answers
PLEASE HURRY IM GIVING BRAINLIEST AND 50 POINTS!!! for the function g(x) = x - 2x^2, find g(-3) + 13
Inessa [10]

Hey there! I'm happy to help!

If we have g(-3) we plug -3 into our function as x.

-3-2(-3)²

-3-2(9)

-3-18

-21

g(-3) is -21, so now we just add 13.

-21+13=-8

The answer is -8.

Have a wonderful day! :D

5 0
3 years ago
Read 2 more answers
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