MATHEMATICS MIDDLE SCHOOL

In February 2010, the population of the world wasapproximately 6 800 000 000 people.
Another way of writing this number is
a.6.8 × 10^8
b.6.8 × 10^9
c.68 × 10^9
d. 68 × 10^10

Answers

Answer 1
Answer: The correct choice is 'B'. The correct exponent is +9. In order to change 6.8 into 6,800,000,000 you have to move the decimal point 9 places in the LARGER direction.
Answer 2
Answer: The answer to your question is A.) , because there are 8 zeros which make it to the power of 8, by 10.

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How do you solve
42 customers increased by 50%

Answers

First, determine what 50% of 42 is. 
42 x 0.50 = 21 (Note: 0.50 is 50% in decimal form).
Then, add 50% of 42 (Which is 21) to 42. 
42 + 21 = 63
So, if 42 customers increased by 50%, there are now 63 customers. 
Hope that helps!!
First you find half of 42, which is 21, then add 21 to 42, which is 63. I hope that helped!

Convert the mixed number to an improper fraction. 2 7/10 A.14/10 B.27/10 C.34/10 D.37/10

Answers

The value of the mixed number is A = 27/10

What are Mixed Numbers?

A mixed number is a whole number, and a proper fraction represented together. A mixed number is formed by combining three parts: a whole number, a numerator, and a denominator. The numerator and denominator are part of the proper fraction that makes the mixed number.

Given data ,

Let the mixed number be represented as A

Now , the equation will be

A = 2 7/10   be equation (1)

On converting the mixed number to an improper fraction , we get

Multiply the whole number by the denominator and add the numerator to it to get the new numerator of the improper fraction

So , A = [ ( 2 x 10 ) + 7 ] / 10

On simplifying the equation , we get

A = 27/10

Hence , the mixed number to improper fraction is A = 27/10

To learn more about mixed numbers click :

brainly.com/question/2639375

#SPJ2
So, to make a mixed number into an improper fraction, you have to multiply the whole number by the denominator and then add the numerator o that number.
2 and 7/10:
2x10=20+7=27/10!
The answer would be B!
I hope this helps!

If a ball rotates 110 degrees in 8 seconds how many degrees does it rotate in 32 seconds

Answers

440 degrees in 32 seconds
8X4=32
110X4=440

Complete the square to factor X^2 +10X=-8

Answers

Answer: x=√(17)-5 and x = -√(17)-5

Step-by-step explanation:

Alright, lets get started.

The given equation is :

x^(2) +10x = -8

Adding 8 in both sides, it will become

x^(2) +10x + 8 = -8 +8

x^(2) +10x + 8 = 0

To make it perfect square, we need to add 25 and subtract 25

x^(2) +10x + 8 +25-25= 0

x^2+10x+25+8-25=0

(x+5)^2+8-25=0

(x+5)^2-17=0

Adding 17 in both sides  

(x+5)^2=17  

taking square root

x+5=√(17)

So,

x=√(17)-5 and x = -√(17)-5  .. Answer

Hope it will help :)

Answer:

Step-by-step explanation:

X² + 10x = -8

add to both side the square of half the coefficient of X which is 5²

X² + 10x + (10/2)² = -8 + (10/2)²

X² + 5² = -8 + 5²

( X + 5 )² = -8 + 25

(X + 5)² = 17

X + 5 = +- √17

Therefore, X = -5 +- √17.

X = -5 + √17 , -5 - √17.

Is 5 feet greater, less or equal than 60 inches?

Answers

Answer:

5 feet is equal to 60 inches.

Step-by-step explanation:

We know that

1 feet = 12 inches.

We'll use this relation to find whether 5 feet is greater, less or equal than 60 inches.

Since, 1 feet = 12 inches.

Hence, 5 feet should be equal to 5×12=60 inches.

Therefore, we can conclude that 5 feet is equal to 60 inches.
5 ft is equivalent to 60 inches because there are 12 inches in a foot. Because there are 5 feet, you would multiply 5 and 12.

The weights, in pounds, of the upper-class men offensive line players for a college are shown below: 322, 290, 321, 326, 330, 315, 311, 292, 290 What is the average, or mean, weight of the upper-class men offensive players? Provide your answer with 3 sig figs. -311 pounds -315 pounds -290 pounds -318 pounds

Answers

Answer: 311 pounds

Step-by-step explanation:

To find the average, add up all of the values and divide by the amount of values.

First add up all of the values.

322+290+321+326+330+315+311+292+290 = 2797

Now count how many values there are and divide your previous sum by it.

2797/9 = 310.78

Because you need to have 3 sig figs, round to the nearest one.

310.78 rounds up to 311.

answer-311

Step-by-step explanation:

322+290+321+326+330+315+311+292+290=2797

Count the number of values and divide by 2797

2797 divided by 9 =310.77777777777777

Nearest one-311
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