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icang [17]
3 years ago
5

Kari plans to sample 20 people of a population that contains 100 students. She wants to determine how many people wake up before

6 a.m. Which sample is the most random?
Mathematics
2 answers:
Rudiy273 years ago
8 0

Answer:

5 students out of each of the 4 homeroom classes (C)

Step-by-step explanation:

Nonamiya [84]3 years ago
4 0

Answer:

C. is the answer on edg

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Which shows the correct substitution of the values a,b,and c from the equation 0=4x^2+2x-1 into the quadratic formula be
Rashid [163]
It should be 4x^2 (x square) +2x-1
a=4x^2, b=2x, c=-1
Use the quadratic formula to solve it which is x=-b+- square root b^2-4ac/2a
6 0
3 years ago
Given: ABCD ∥gram, BK ⊥ AD , AB ⊥ BD AB=6, AK=3 Find: m∠A, BK, AABCD
jenyasd209 [6]

1. Consider right triangle ABK. The hypotenuse AB is 6 un. and the leg AK is 3 un. Since the leg is half of the hypotenuse, then the opposite to the leg angle is 30°. This means that m∠ABK=30°. Then m∠BAK=90°-30°=60°.

2. By the Pythagorean theorem,

AB^2=AK^2+BK^2,\\\\6^2=3^2+BK^2,\\\\BK^2=36-9,\\\\BK^2=27,\\\\BK=3\sqrt{3}\ un.

3. Consider right triangle ABD. In this triangle AD is hypotenuse and m∠ADB=90°-m∠BAD=90°-60°=30°. Then the leg AB opposite to the angle 30° is half of the hypotenuse and AD=12 un.

4. The area of parallelogram is

A_{ABCD}=AD\cdot BK=12\cdot 3\sqrt{3}=36\sqrt{3}\ sq. un.

5 0
3 years ago
Can you please help me please:(
kodGreya [7K]

Answer:

I think that the answer would be 12.

Step-by-step explanation:

1/2 gallon = 24 brownies

I do not know if that is right but I think it is.

sorry if its not

7 0
3 years ago
I'm pretty sure that this is the answer
valentina_108 [34]

Step-by-step explanation:

your correct I'm pretty sure

6 0
3 years ago
Read 2 more answers
2x + 4y = 12<br> 3x + 5y = 14
Mekhanik [1.2K]
If you're looking for the variables the answer is simple...(-2,4)
7 0
3 years ago
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