Can some one show how to solve this? The answer is 10

Answers

Answer 1

Answer: -x-1=x-21
Add 1 to each side
-x-1+1=x-21+1
-x=x-20
Minus x from each side
-x-x=x-x-20
-2x=-20
Divide -20 by -2x
If two negatives are divided, it becomes a positive number
-20÷-2x=10
x=10

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Neil and Manny have different amounts of money. If Manny gives Neil $6, then Neil and Manny will have the same amount of money. If Neil gives Manny $6, then Manny will have 3 times as much money as Neil. Together, do Neil and Manny have enough money to buy a $50 video game? Show your work or explain how you found your answer. Define any variables you use.

Answers

Neil would have $6, and Manny would have $12. $6+$6=$12 that manny has, so they would both have the same amount of money. But if Neil gives manny $6, then Manny would have $18, which is three times greater than $6 that Neil has. $12+$6 only equals $18, so they don't have enough money to buy the game.

What is 1 whole 1/4 subtract to
1/3

Answers

1 whole and 1/4 substracted to 1/3 can be written as:

1 1/4 - 1/3 =
= 5/4 - 1/3

We have to find a common denominator which is 12:

5/4 = 15/12
1/3 = 4/12

So now we just substract numerators:

15/12 - 4/12 = 11/12

3 miles below sea level integer

Answers

Since it is below sea level, it is negative, so it would be

-3

Hope this helped!

-3 is the answer because it is below sea level

A student solved this problem and said the answer was 2 1 1/2 miles. Colin rides his bike 10 1/2 miles every morning and 12 1/4 miles every afternoon. On Monday, he rode his usual distance in the morning, but in the afternoon he rode 1 1/2 fewer miles. How many miles did Colin ride on Monday?

Is the student's answer reasonable?

A.
Yes, the answer is reasonable.

B.
No, the answer is not reasonable. It should be about 10 miles.

C.
No, the answer is not reasonable. It should be about 15 miles.

D.
No, the answer is not reasonable. It should be about 25 miles.

Answers

so do (21/2+49/4)-3/2=You get 21 1/4 miles
Since 21 1/4 is close to 21 1/2, this answer is reasonable. So A is the answer

How many hundredths equal 4 tenths

Answers

tenths means 1/10
hunderths means 1/100

how many 1/100 makes 4/10?
1/100 times what=4/10
multiply both sides by 100/1
what=400/10=40

answer is 40 hunderths=4 tenths

40 Hundreths=4 Tenths

Round 768 to the nearest 10

Answers

Answer: 770

Step-by-step explanation: To round 768 to the nearest 10, we first find the digit in the rounding place which in this case is the 6 in the tens place.

Next, we look at the digit to the right of the 6 which is 8. According to the rules of rounding, since the digit to the right of the rounding place is greater than or equal to 5, we round up.

So in this problem, since 8 is greater than or equal to 5, we round down. This means that the digit in the rounding place which is 6 moves up to 7 and we add a 0 to all the digits that are right of 7.

Therefore, 768 rounded to the nearest 10 is 770.

770 because the 1 is higher than 5 so you round up