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4 years ago

When adding the square root of 16 and -8 which type of number is the sum

Mathematics

2 answers:

yuradex [85]4 years ago

4 0

The first answer is A the second answer is B

Maksim231197 [3]4 years ago

4 0

Answer:

When adding √16 and -8, which type of number is the sum?

The answer would be A

Which number is a perfect square?

The answer would be C

Step-by-step explanation:

For the second question, the answer is C because. . . . . . . . . .

A perfect cube is a number that is the cube of an integer. Some examples of perfect cubes are 1, 8, 27, 64, 125, 216, 343. The opposite of cubing a number is finding the cube root.

Sorry I am very late to answering this question. . .

You might be interested in

Round the numbers to the nearest cent and then to the nearest dollar. 23. $62.756 24. $38.415

MrMuchimi

Answer:

23. $ 62.76 to the nearest cent

$63.00 to the nearest dollar

24. $ 38.42 to the nearest cent

$38.00 to the nearest dollar

Step-by-step explanation:

When we round to the nearest cent we round the second number after the decimal. We look at the third number after the decimal. If it is 5 or above we round up.

When we round to the nearest dollar, we round the number befroe the decimal. We look at the number after the decimal. If it is 5 or above we round up.

23. $62.756 we round the 5 so we look at the 6 6>= 5 so we round up

$ 62.76 to the nearest cent

$62.756 we round the 2 so we look at the 7 7>= 5 so we round up

$63.00 to the nearest dollar

24. $38.415 we round the 1 so we look at the 5 5>= 5 so we round up

$ 38.42 to the nearest cent

$38.415 we round the 8 so we look at the 4 4< 5 so we leave alone

$38.00 to the nearest dollar

6 0

3 years ago

Two trains are 480 miles apart. They start at the same time, and travel towards one another. The difference between the speeds o

Genrish500 [490]

Answer:

Did you just start today? It looks like you're new here. I'm also new here.

Step-by-step explanation:

I don't really know what to do either.

From what I've done so far, I don't understand it.

Sorry.

5 0

4 years ago

Sammi bought 2dozen valentines. How many valentines did sammi have left after giving 7/8 of them to her classmates

Ierofanga [76]

Dozen = 12

2 dozen

2x12=24

7/8 of 24

24 / 8 = 3
3 x 7 = 21
24- 21= 3

3 roses are left over

8 0

3 years ago

A lottery game has balls numbered 1 through 21. What is the probability of selecting an even numbered ball or an 8? Round to nea

Viktor [21]

Answer: 0.476

Step-by-step explanation:

Let A = Event of choosing an even number ball.

B = Event of choosing an 8 .

Given, A lottery game has balls numbered 1 through 21.

Sample space: S= {1,2,3,4,5,6,7,8,...., 21}

n(S) = 21

Then, A= {2,4,6,8, 10,...(20)}

i.e. n(A)= 10

B= {8}

n(B) = 1

A∪B = {2,4,6,8, 10,...(20)} = A

n(A∪B)=10

Now, the probability of selecting an even numbered ball or an 8 is

$P(A\cup B)=\dfrac{n(A\cup B)}{n(S)}$

$=\dfrac{10}{21}\approx0.476$

Hence, the required probability =0.476

7 0

3 years ago

Question 1: find the volume of a cube whose total surface area is 486cm^2

lapo4ka [179]

<h3>The volume of cube is 729 cubic centimeter</h3>

Solution:

The surface area of cube is given as:

$Surface\ area = 6a^2$

Where, "a" is the length of side of cube

Given that, surface area = 486 square centimeter

$486 = 6a^2\\\\a^2 = \frac{486}{6}\\\\a^2 = 81\\\\a = 9$

Find the volume of cube:

$volume\ of\ cube = a^3\\\\volume\ of\ cube = 9^3\\\\volume\ of\ cube = 9 \times 9 \times 9\\\\volume\ of\ cube = 729$

Thus volume of cube is 729 cubic centimeter

8 0

3 years ago