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goblinko [34]
2 years ago
8

Which statement is true about the difference 2 square root of 7 − square root of 28 ?

Mathematics
1 answer:
boyakko [2]2 years ago
5 0

I'll go slow:

2\sqrt 7 - \sqrt{28}

=2 \sqrt 7 - \sqrt{4 \cdot 7}

=2 \sqrt 7 - \sqrt{4} \cdot \sqrt{7}

=2 \sqrt7 - 2 \sqrt 7

=0

Answer: B  rational and equal to 0.

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Someone please help me on this question! no links plz!
Alexxx [7]
26x9=234
26x9=234
18x9=162

If we add together, we get 630

So D would be your answer
6 0
3 years ago
Read 2 more answers
A triangle has 3 sides that measure 5 1/4 feet, 2 5/6 feet, and 8 7/12 feet what is the perimeter of the triangle ?
nordsb [41]

Perimeter = add up the sides

P = 5 1/4 + 2 5/6 + 8 7/12

need to get a common denominator of 12

5 1/4*3/3 = 5 3/12

2 5/6*2/2 = 2 10/12

8 7/12

P = 5 3/12+ 2 10/12 + 8 7/12

P = (5+2+8)+(3+10+7)/12

P=15 (20/12)

P =15 + 1 8/12

P = 16 2/3 ft

4 0
3 years ago
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an exponential growth function represents a quantity that has a constant halving time. True or false?
spin [16.1K]
An exponential decay function represents a quantity that has a constant halving time. But here is the question about an exponential growth function.A = Ao * k^t1/2 x = x * k^t1/2 = k^tln(1/2) = t * ln kt = ln(1/2) / ln k   - the halving time for any exponential decay function.Answer: False.

8 0
3 years ago
Is my answer correct?
Svetllana [295]

Yes it is correct because P = 2l + 2w

11 = 2(3 1/2) + 2w

11 = 7 + 4

4 = 2w

2 = w

4 0
3 years ago
What is the prime factorization of 330
dusya [7]

Answer:

Hope this helps

Step-by-step explanation:

Positive Integer factors of 330 = 2, 3, 6, 5, 30, 11, 330 divided by 2, 3, 5, 11, gives no remainder. They are integers and prime numbers of 330, they are also called composite number.

6 0
3 years ago
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