MATHEMATICS MIDDLE SCHOOL

Gregory predicts that 310 people will attend the spring play. And there was an actual total of 220 people who attended the spring play. What is the percent error.

Answers

Answer 1
Answer: 310 - 220 = 90
90/310 = x/100 (cross multiplication) 
9000 = 310x
9000/310 = x
x = around 29%
Answer 2
Answer:

Answer:

29%

Step-by-step explanation:

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There are 638 fewer adults than kids at the amusement park. There are 285 adults. How many kids are there?

Answers

Answer:

923

Step-by-step explanation:

Just add how many adults there were with how many fewer adults than kids there were.  

285+638=923
Just add all of them together ! 638+285=923

Joey Chestnut is trying to break his own world record for eating the most hot dogs and buns in 101010 minutes. He needs to eat more than 72 hot dogs to break his record. After 1 minute of competition, Joey has eaten 10 hot dogs. Joey wants to know the number of hot dogs per minute that he needs to eat for the next 9 minutes to break his own record.?= Let d represent the number of hot dogs Joey eats per minute. Write an inequality to determine the number of hot dogs per minute Joey must eat for the last 9 minutes to break his record.

Answers

Well since he already ate 10 in the first minute, u subtract that from the total 72 hot dogs he needs to eat. = 62 Then use the formula 62= 9d By solving that, you get 6.8 recurring.

What is 3y = 15x - 12 in y = mx + b form ?

Answers

y=5x-4 is the equation of the line 3y = 15x - 12 in slope intercept form.

What is Slope of Line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

The given equation is  3y = 15x - 12

Three times of y equal to fifteen times of x minus twelve.

We need to convert it to slope intercept form y=mx+b to do this we have to isolate the y term and divide the equation coefficient by 3

Divide both sides by 3

y=15/3x-12/3

When fifteen is divided by three the result is five and when twelve is divided by three we get four.

y=5x-4

Hence, y=5x-4 is the equation of the line 3y = 15x - 12 in slope intercept form.

To learn more on slope of line click:

brainly.com/question/16180119

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The answer to the question is: y=5x-4

236= 2 hundreds 3 tens and ______ ones
= 2 hundreds 2 tens and ______ ones

Answers

6 ones


so the second one is
220+x
236-220=16

16 ones

so the blanks in order are
6 ones
16 ones
236 = 2 hundreds 3 tens and 6 ones = 2 hundredds 2 tens and 16 ones

A bank of 16 floodlights together use 4000 watts of power. how much power is used by each bulb

Answers

To solve this problem, divide the number of total watts by the number of lights.

4000 ÷ 16 = 250

Each light uses 250 watts.

Tell whether the ratio form a proportion
14/21 =26/39

Answers

if the ratios form a proportion, the ratios will be equal. first we'll simplify the ratios:

14/21
divide top and bottom by 7
2/3

26/39
divide top and bottom by 13
2/3

ss you can see now, the ratios are indeed equal, so they do form a proportion
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