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ad-work [718]
4 years ago
7

In determining the quality of the hats in a used-hat bin, a grandmother selects the first four hats she can reach. Which samplin

g technique did she use?
Select one:
a. systematic sampling
b. convenience sampling
c. stratified random sampling
d. voluntary response sampling
Mathematics
1 answer:
Sladkaya [172]4 years ago
3 0
B convenience sampling because if it looks bad then she should throw it away but if it looks good then she should keep it 
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A jewelry box contains two gold hoop earrings and two silver hoop earrings. You randomly choose two earrings. What is the probab
Viefleur [7K]

Answer:

2 + 2 = 4 total earrings in the box.

If you put the earring back into the box before taking out the second, it would be 1/2 * 1/2 = 1/4, 25%.

7 0
3 years ago
Read 2 more answers
Can someone please help me!!
Vladimir [108]

Answer:

#18)  <em>m</em>∠B = 107°

#19) <em>m</em>∠B = 17°

Step-by-step explanation:

*Supplementary angles are angles who's measures equal 180°

*Complementary angles are angles who's measures equal 90°

#18) If ∠A is 73°, then we must subtract 73 from 180.

180 - 73 = 107

This means that <em>m</em>∠B = 107°.

#19) If ∠A is 73°, then we must subtract 73 from 90.

90 - 73 = 17

This means that <em>m</em>∠B = 17°.

8 0
3 years ago
In isosceles triangle WXY, XY is 13 inches in length and WY is 10 inches. What is the length of XZ? answer asap please
Anna11 [10]
<h3>Answer:  12 inches</h3>

=============================================================

Explanation:

Notice the double tickmarks on segments WZ and ZY. This tells us the two segments are the same length. Let's say they are m units long, where m is a placeholder for a positive number.

That would mean m+m = 2m represents the length of segment WY, but that's equal to 10 as the diagram shows. We have 2m = 10 lead to m = 5 after dividing both sides by 2.

We've shown that WZ and ZY are 5 units long each. In short, we just cut that length of 10 in half.

-----------------------------------

Let's focus on triangle XYZ. This is a right triangle with legs XZ = unknown and ZY = 5. The hypotenuse is XY = 13.

We'll use the pythagorean theorem to find XZ

a^2 + b^2 = c^2

(XZ)^2 + (ZY)^2 = (XY)^2

(XZ)^2 + (5)^2 = (13)^2

(XZ)^2 + 25 = 169

(XZ)^2 = 169-25

(XZ)^2 = 144

XZ = sqrt(144)

XZ = 12

Segment XZ is 12 inches long.

8 0
3 years ago
A teacher brings 3 gallons of juice on a field trip. There are 36 students on the trip. a. How many fluid ounces of juice does t
Korvikt [17]

Answer:

384 fl ounces of juice

Step-by-step explanation:

1 gallon=128 fluid ounce

3*128

=384

8 0
2 years ago
How many significant figures are in the number 0.002849?
Oliga [24]
There is 4 significant figures
5 0
3 years ago
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