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Arada [10]
3 years ago
15

Help me solve this please?

Mathematics
1 answer:
makkiz [27]3 years ago
8 0

Step-by-step explanation:

Simplify the following expression then state the property used:

9^-2

Property:

Given,

9^-2

For any real numbers a and b a, b ≠ 0, and for any two positive integers, n and n

a^-m

=> 1/a^m [By doing reciprocal]

So,

9^-2

=> 1/9^2

=> 1/(3^2)^2

=> 1/(3^4)

=> 1/(3*3*3*3)

=> 1/81. Ans.

Hope this helps.

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Answer:

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3 years ago
Antonio wants to examine the sales in a restaurant during a period of time from 2 hours before to 2 hours after the peak dinner
Anna007 [38]

Using function concepts, it is found that the domain of the graph Antonio is creating would be: 4 \leq x \leq 8

  • The domain of a function is the <u>set that contains all possible input values</u>.

In this problem, the inputs are the time, between <u>2 hours before and 2 hours after the peak time of 6 pm</u>, hence, it is given by: 4 \leq x \leq 8

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3 years ago
How long will it take $5,000 to double in an account that pays 5.6% simple interest
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4 years ago
If tan theta= 15/8, then:
Maurinko [17]
Hello there!

The only thing we have to do here is remember our trigonometric functions!

sin=y/r
cos=x/r
tan=y/x
sec=r/x
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cot=x/y

Knowing that tanᎾ=15/8, we know that y=15 and x=8


Now we need to look at the answer choices and see if they are correct.

A. secᎾ=17/8
Since secᎾ=r/x and r=17 and x=8, this is correct.

B. cosᎾ=15/17
Since cosᎾ=x/r and x=8 and r=17, this is wrong.

C. cotᎾ=8/15
Since cotᎾ=x/y and x=8 and y=15, this is also correct!

D. cscᎾ=17/15
Since cscᎾ=r/y and r=17 and y=15, this is right too.

I really hope this helps!
Best wishes :)
5 0
3 years ago
Read 2 more answers
6. A ball is thrown at an upward velocity of 72 feet per second from a platform that is raised 10 feet
Sveta_85 [38]

Answer:

Question 675528: A ball is thrown vertically upward with an initial velocity of 48 feet per second. If the ball started its flight at a height of 8 feet, then its height s at time t can be determined by s(t)=-16t^2+48t+8 where s(t) is measured in feet above the ground and t is the number of seconds of flight.

Step-by-step explanation:

8 0
3 years ago
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