State whether set A and B are equal, equivalent, both, or neither. A = {9, 8, 7} B = {8, 9, 10}

Answers

Answer 1

Answer: They're just equivalent.

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Factor completely 4x4− 20x3 + 12x2. (1 point) Select one: a. 4x2(x − 3)(x − 1) b. 4(x4 − 5x3 + 3x2) c. 4x2(x2 − 5x + 3) d. 4(x − 3)(x − 1
Five-eighths of sixty four
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Angle b measures 60°. what is the measure of angle that is complementary to angle B?

Answers

Solutions

Complementary angle are two angles whose sum is 90°. We know that Angle b measures 60°.

60° + (X) = 90°

90° - 60° = (X)

90° - 60° = 30°

(X) = 30°

30° complementary to Angle B

Since a complementary angle is two angles that equal 90 degrees the compliment of angle B would be 30 degrees since 60+30 = 90.

If (-3, y) lies on the graph of y = 3^x, then y =

1/27
-1
-27

Answers

1/27

Cuz y=3^(-3)=1/(3^3)=1/27

Which expression is equivalent to (8-3i)-(2-91)?Ο Α. 18-6i
OB. 11 +78
O C. 6-12i
O D. 6+6i

Answers

Answer:

the correct answer is option B.

Step-by-step explanation:

First, we need to combine the terms inside the parentheses.

This gives us (8-3i)-(2-9i), or (8-3i)-(-2+9i).

We can then use the additive inverse property to simplify this to (8-3i)+2+9i, which is equal to (11+6i). Therefore, the correct answer is option B.

Given a mean of 43.8 and a standard deviation of 8.7, what is the z-score of the value 40 rounded to the nearest tenth?

Answers

For the answer to the question above,
Sample mean is given by,

x = (1/n)∑x˅i .... ˅ means sub

x = (1/5)(60 + 40 + 35 + 45 + 39)
= 43.8

z-score is given by,

z = (X - μ)/σ .... μ is population mean, σ is the standard deviation

z = (43.8 - 43.8)/8.7
= 0
so the answer is zero
I hope my answer helped you.

Answer:

-.4

Step-by-step explanation:

z score = value-mean / standard deviation

z score = 40-43.8 / 8.7

-.436 = 40-43.8 / 8.7

-.436 to nearest 10th -.4

What is the answer to this?

Answers

I got / 33/4. If I’m wrong sorry

Every day about 140, 000, 000 plastic water bottles are brought in the United States each bottle is about 0.25 m long in the equator of the earth is about 40, 000, 000 m around how many times can the earth equator be circle by a line of plastic bottles used in the United States every day

Answers

Facts:
Bottles sold daily: 140 million
Each bottle: ~0.25 meters
Equator : 40 million meters

140 mil. Bottles * 0,25 m = 35 million meters

35<40 ( equator) which means you can't circle it not even once with the bottles sold in US in one day!

So 40:35= 0,875

That means we can circle only 87.5% of the Equator!

Info: you need 160 million bottles to circle the Equator once.

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Select the equivalent expression

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