MATHEMATICS MIDDLE SCHOOL

Jakob simplified the expression as shown.What was Jakob’s error in subtracting the expressions?
He used the commutative property incorrectly.
He used the distributive property incorrectly.
He used the associative property incorrectly.
He simplified the x coefficients incorrectly.
Jakob simplified the expression as shown. What was Jakob’s error - 1

Answers

Answer 1
Answer:

He simplified the x coefficients incorrectly.

Step-by-step explanation:

In performing the operation, he should group the like terms together.

In this case, the terms with an x and those without.

This will be written as;

6.7x-3.4x-2x-3-1-2

1.3x-6

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Associative, commutative and distributive property: brainly.com/question/2781950

Keywords: simplified, expression

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Answer 2
Answer:

Answer:

D

Step-by-step explanation:

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Your hot air balloon is rising at the rate of 4 feet per second. Another aircraft nearby is at 7452 feet and is losing altitude at the rate of 30 feet per second. In how many seconds will your hot air balloon be at the same altitude as the other aircraft?​

Answers

Answer:

219.2\ sec

Step-by-step explanation:

Let

y ----> the altitude in feet

x ----> the time in seconds

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope ot unit rate

b is the y-intercept or initial value

In this problem we have

Your hot air balloon

The slope is equal to m=4\ (ft)/(sec)

The y-intercept is b=0 ---> represent a proportional relationship

The linear equation is

y=4x ----> equation B

Another aircraft

The slope is equal to m=-30\ (ft)/(sec) ---> is negative because is a decreasing function

The y-intercept is b=7,452\ ft

The linear equation is

y=-30x+7,452 ----> equation B

Equate equation A and equation B

4x=-30x+7,452

solve for x

Adds 30x both sides

4x+30x=7,452

34x=7,452

Divide by 34 both sides

x=219.2\ sec

Jennifer wants to build a rectangular fence around her garden that is 6 feet by 10 feet how many feet of fencing does she need to go all around her garden

Answers

32 feet of fence would be the correct awnser
You add. 
6+6+10+10. Which gives you =32

Hope this helps. :)

Can you please give me 5 excersices to get perimeter and area, square or rectangle

Answers

◼️ This is a square. Each side is 5cm. What is the area and perimeter????




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2. You have a rectangle. Its length is 12 and its width is 4. What is its perimeter?

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Assume that Cecilia has $100.00 write and solve an inequality that shows how many CDs she could buy​

Answers

Answer:

how much are the cds?

Step-by-step explanation:

A recipe for guacamole uses 12% lime juice, if a batch contains 0.75 cup of lime juice, how large is the batch of guacamole?

Answers

Answer:

The batch of guacamole is: 6.25.

Step-by-step explanation:

It is given that:

A recipe for guacamole uses 12% lime juice.

This means that:

A recipe for guacamole uses 0.12 lime juice.

This means that:

1 cup of lime juice= 1/0.12 guacamole.

Also,

a batch contains 0.75 cup of lime juice.

This means that:

   0.75 cups of lime juice=0.75/0.12 guacamole.

i.e.

   0.75 cups of lime juice=6.25 guacamole.

Hence, one batch = 6.25 guacamole.
0.75/0.12=6.25

the batch is 6.25 cups

in 10 min calebs heart can beat 700 times .Steve's heart beats 536 times in 8 minutes how many more times does calebs heart beat in 5 minutes than Steve's heart

Answers

Assuming that their heart will not increase speed or decrease speed of beating
Caleb: 700 times/ 10 minutes = 70 times/minute, hence in 5 minutes his heart beats 70 * 5 = 350 times
Steve: 536 times/ 8 minutes = 67 times/minute, hence in 5 minutes his heart beats 67 * 5 = 335 times
350-335 = 15 times
Caleb's heart beat 15 times more than Steve's in 5 minutes
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