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Lesechka [4]
3 years ago
5

Evaluate the expression for = −3 and = 5. r^{-4} s^2

Mathematics
2 answers:
Zanzabum3 years ago
6 0
If r = -3 and s = 5:
(r^-4)(s^2) = (-3^-4)(5^2) = (1/81)(25) = 25/81
Butoxors [25]3 years ago
5 0
If r = -3 and s = 5:
(r^-4)(s^2) = (-3^-4)(5^2) = (1/81)(25) = 25/81

If r = 5 and s = -3:
(r^-4)(s^2) = (5^-4)(3^2) = (1/625)(9) = 9/625
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Which statements describe the graph of 2 8/9 ≥ x on a number line? Select three options.
andrezito [222]

Answer:

✔️The graph contains point zero

✔️There's a closed circle on 2⁸/9

✔️The arrow points to the left

Step-by-step explanation:

The inequality, 2⁸/9 ≥ x, implies that 2⁸/9 is either equal to x or more than x. In other words, the highest value of x is 2⁸/9. Possible value of x is equal to or less than 2⁸/9.

This, on a number line, we would graph the information as follows:

✔️The graph contains point zero

Rationale: point zero is less than 2⁸/9

✔️There's a closed circle on 2⁸/9

Rationale: this indicates 2⁸/9 is included in the possible value of x

✔️The arrow points to the left

Rationale: possible value of x ranges from 2⁸/9 and below.

7 0
3 years ago
Read 2 more answers
A golf ball is hit with an initial velocity of 64 Ft/s. The function h(t) = -16t^2 + 64t models the height h (in feet) of the go
Arlecino [84]

Answer:

  • Yes, the ball reaches the height of 64 ft

Step-by-step explanation:

<u>Given function</u>

  • h(t) = -16t^2 + 64t

<u>The maximum value is at vertex and the x-value of the vertex is:</u>

  • t = -64/2(-16) = 2

<u>Finding the maximum height the ball can reach:</u>

  • h(2) = -16(2²) + 64(2) = -64 + 128 = 64

The answer is yes

7 0
3 years ago
What is the positive square root of 340
mafiozo [28]
34 because I just did it
4 0
3 years ago
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Elizabeth wants to ride her bicycle 28.6 miles this week. She has already ridden 19 miles. If she rides for 3 more days, write a
8090 [49]

Answer: The average number of miles she would have to ride each day to meet her goal = 3.2 miles.

Step-by-step explanation:

Given: Elizabeth wants to ride her bicycle 28.6 miles this week.

She already ridden 19 miles.

Number of days she will ride more =3

Let m = average number of miles ridden in a day.

Then,

Total distance = initial distance + (m) (Number of days)

i.e. 28.6 = 19+3m   (Required equation)

Subtract 19 from both sides , we get

9.6=3m\\\\\Rightarrow\ m=\dfrac{9.6}{3}\\\\\Rightarrow\ m=3.2\ miles

Hence, the average number of miles she would have to ride each day to meet her goal = 3.2 miles.

5 0
3 years ago
In a collection of coins consisting of only quarters and nickels, the total value is $1.80 and there are four times as many nick
Bond [772]
There are a total of 4 quarters and 16 nickels.
6 0
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