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yan [13]
3 years ago
7

Evaluate each expression if r= −3, s=4, and t= −7.

Mathematics
1 answer:
saul85 [17]3 years ago
5 0

Answer:

a. 5

b. -1

c. 132

Step-by-step explanation:

Given:

r =-3, s = 4 and r = -7

\sqrt{s} +|r| \\ \sqrt{4} +|-3| \\ 2 +3 \\ 5

\frac{s -r}{t} \\ \frac{4 -(-3)}{-7} \\ \frac{4 +3}{-7} \\ \frac{7}{-7} \\ -1

2s^3 +r -t \\ 2(4)^3 +(-3) -(-7) \\ 2(64) -3 +7 \\ 128 -3 +7 \\ 132

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Hadley has 3/6 of a box of white envelopes and 1/3 of a box of gray envelopes. When full, each box of envelopes has the same num
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Answer:

<u>The two statements that apply are A and B.</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

White envelopes Hadley has = 3/6 of a box

Gray envelopes Hadley has = 1/3 of a box

When full, each box of envelopes has the same number of envelopes

Hadley said she has 4/9 of a box when she puts the white envelopes and gray envelopes together.

2. Which statements describe this situation? Select the two statements that apply.

Let's add 3/6 and 1/3

3/6 + 1/3 = 3/6 + 2/6 = 5/6

A. Hadley’s answer is incorrect, because 3/6 is equal to 1/2 , and 4/9 is less then 1/2 .   This is correct.

B. Hadley's answer is incorrect, because 3/6 plus 1/3 equals 5/6.   This is correct.

C. Hadley's answer is incorrect, because 3/6 plus 1/3 equals 2/6.  This is wrong

D. Hadley's answer is correct, because 3 and 1 is 4, and 6 and 3 is 9. This is wrong.

<u>The two statements that apply are A and B.</u>

3 0
3 years ago
To help racecar drivers safely negotiate turns, racetracks are banked at the curves. At one location, a 58 ft track is banked su
zmey [24]
The correct answer is Choice B: 53.0 feet.

If you draw a picture of the cross section, you will have a right triangle. The hypotenuse is 58 and one of the legs is 23.6. All you have to do is use the Pythagorean Theorem and solve for the missing side.

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7 0
3 years ago
What is the solution set of {x|x&lt;-3} intersection {x|x&gt;5}?
ziro4ka [17]
There’s no solution because x is less than 3 there is no way is greater than 5.

Hope this helps!
8 0
3 years ago
hi PLLSS HELP solve x2 – 8x = 20 by completing the square. Which is the solution set of the equation? {–22, 14} {–14, 22} {–10,
Anuta_ua [19.1K]

Answer:

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Step-by-step explanation:

Given

x² - 8x = 20

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x² + 2(- 4)x + 16 = 20 + 16, that is

(x - 4)² = 36 ( take the square root of both sides )

x - 4 = ± \sqrt{36} = ± 6 ( add 4 to both sides )

x = 4 ± 6

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3 0
3 years ago
A figure is shown.
NNADVOKAT [17]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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