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Fed [463]
3 years ago
8

Trevor estimated that the product of 8.33 and 6.2 is 8 × 6, or 48. Is his estimate an underestimate or an overestimate?

Mathematics
1 answer:
Savatey [412]3 years ago
7 0
Trevor’s estimate is UNDERestimate because 8*6 is 48 and 8.33*6.2 = 51.646
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Natalee wanted to demonstrate the volume of a square pyramid. To do this, she took a hollowed out pyramid that has a base of 25
swat32

Answer:

The answer is below

Step-by-step explanation:

Natalee transferred water from a square pyramid to a cube. To calculate how many times she will need to dump the water from the pyramid into the cube to completely fill the cube, we divide the volume of the cube by the volume of the square pyramid. Hence:

Number of times = volume of cube / volume of pyramid

The perimeter of the pyramid base = 25 in, hence the length of one side of the bae = 25 / 4 = 6.25 in

Volume of square pyramid  = base² × (height / 3) = (6.25 in)² * (5 in / 3) = 65.1 in³

Volume of cube = 125 in³

Number of times = 125 in³ / 65.1 in³ = 1.92

3 0
3 years ago
3+5i/-2+3i perform operation
melisa1 [442]

Answer:

\dfrac{9}{13}-\dfrac{19}{13}i

Step-by-step explanation:

Remember i^2=-1

You are given the fraction \dfrac{3+5i}{-2+3i}

First, multiply the numerator and the denominator by -2-3i:

\dfrac{3+5i}{-2+3i}=\dfrac{(3+5i)(-2-3i)}{(-2+3i)(-2-3i)}=\dfrac{(3+5i)(-2-3i)}{(-2)^2-(3i)^2}=\dfrac{(3+5i)(-2-3i)}{4-9i^2}=\dfrac{(3+5i)(-2-3i)}{4+9}

This gives you 13 in denominator, now multiply two complex numbers in numerator:

(3+5i)(-2-3i)=-6-9i-10i-15i^2=-6-19i+15=9-19i

Thus, the initial fraction is

\dfrac{9-19i}{13}=\dfrac{9}{13}-\dfrac{19}{13}i

4 0
2 years ago
Please translate each algebraic expression to English phrase
ludmilkaskok [199]

1. x - 8

2. 13 + 2y

3. 4 ( x+ 5)

4. 7x

5. m + 6
5 0
2 years ago
Read 2 more answers
Pleaseeeeeee helpppppppp meeeee
nirvana33 [79]
All are relations except for relation 3
6 0
2 years ago
Please help WHAT IS THE PERCENT OF 39.8 out of 200 QUICK PLEASE
Masteriza [31]

Answer:

19.9%

Step-by-step explanation:

39.8/200 = 0.199 (move decimal two times)

19.9%

or you can just see what number get 200 to 100, which is by dividing by 2. What you do to the bottom you do to the top so 39.8/200 (divide both sides by 2)  = 19.9/100

which is 19.9%.

<u><em>Ace Carlos</em></u>

7 0
3 years ago
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