MATHEMATICS MIDDLE SCHOOL

What is x is the equation 3(x+2)=3.90

Answers

Answer 1
Answer: X is -0.7 because if you distribute 3(x+2), you’ll get 3x+6. Subtract both sides by 6 and you’ll get 3x=-2.1. Finally divide both sides by 3 and you’ll get x= -0.7. If you want to make sure you can plug -0.7 into the equation. So it would be 3(-0.7+2). -0.7+2=1.3. Multiply it by 3 and you’ll get 3.90. Hope this helps.
Answer 2
Answer: X = -2.1/3

I hope this helps

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MIDDLE SCHOOL

Which of the following is the solution to the equation x + 8.6 = 36.2?

Answers

X
=
3
6
.
2

8
.
6
x=36.2−8.6

2 Simplify
3
6
.
2

8
.
6
The answer is simple. TO fine the answer you can take 36.2-8.6= 27.6. so if you plug in 27.6 for x the equation is 27.6+8.6=36.2 and that equation is true so yes the answer is 27.6. 
HIGH SCHOOL

What is the average rate of change of f(x) = −2x + 1 from x = −5 to x = 1?

Answers

MIDDLE SCHOOL

When multiplying with decimals... A) count the number of places over to the decimal in the first number and in the second number, add them together, then move over the that number in the answer
B) line up the decimals, bring the decimal straight down in the answer
C) move the decimal over to the end of the right side in the top number, then in the bottom number.
D) decimal placement is not a concern when multiplying numbers

Answers

Answer:

A

Step-by-step explanation:

Decimal place can be counted before multiplying. The multiply number without decimals, when you get the answer add the decimal place back.

MIDDLE SCHOOL

A parking lot had 80 cars. Of those 80 cars, 35% were blue, 16 were black, and the rest were tan. What percent of the cars were tan

Answers

100%=80cars
1%=0.8cars
35%=28cars
80-28-16=36 tan cars
36/80 x 100% =45%
MIDDLE SCHOOL

Sean has 12 comedy, 15 drama and 9 action DVDs. Find the ratio of comedy DVDs to the total number of DVDs.

Answers

Answer:

1:3

Step-by-step explanation:

12 comedy

15 drama

9 action

Total = 12+15+9 = 36

Ratio between number of comedy DVDs to the total number of DVDs is :

12:36

6:18

3:9

1:3

Sorry if I'm wrong tho.. 0.0

Answer: The ratios is 1 to 3.

Step-by-step explanation: First you have to find how many comedy DVDs there are which in this case is 12. Then, you find the total number of DVDs  by finding what 12+15+9 equals. It equals 36. So the ratios is 12 to 36. You can simplify this by dividing both sides by 12 and you get the ratio of 1 to 3.

MIDDLE SCHOOL

945 round nearest ten

Answers

945 rounded to the nearest ten is 950
I say that the answer is 950
COLLEGE

Find the distance between the points (-3,5) and (2,7). Leave the answer as a simplified square root

Answers

To solve this problem you must apply the proccedure shown below:

 1. You have the following two points given in the exercise above:

 Points: (-3,5) and (2,7)

 2. Therefore, to calculate the distance between these two points, you must apply the distance formula, which is:

 d=√(x2-x1)²+(y2-y1)²

 3. When you substitute the values, you obtain:

 d=√(2-(-3))²+(7-5)²
 d=√29

 The answer is: √29
MIDDLE SCHOOL

In an election, everyone voted for either Cindy or Shawn. Cindy received 55% of the votes. Shawn received 423 votes. How many total people voted in the election?

Answers

Percentage of votes received by Cindy = 55%
Number of votes received by Shawn = 423
Let us assume the total number of voters = x
Then
423 + (55x/100) = x
423 + (11x/20) = x
8460 + 11x = 20x
20x - 11x = 8460
9x = 8460
x = 8460/9
x = 940
So from the above deduction we can see that the total number of voters is 940. I hope the procedure is simple enough for you to understand. You can use this method in future for solving similar problems without requiring any help from outside.
55%+y=100%
y=45%
423=45%
X×45/100=423
X=423×100/45
X=940
which means a total of 940 people voted
MIDDLE SCHOOL

Rameez made 1038 runs in 2 seasons and hameed made 2040 runs. How many more runs did hameed make than Rameez

Answers

Answer:

1002

Step-by-step explanation:

2040 - 1038= 1002

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