MATHEMATICS MIDDLE SCHOOL

HELP ME ASAP!! 20 POINTS! PLEASE!!!!

Answers

Answer 1

Answer:

1. -5 5/6

2. ?

3. -8.16 (i think)

4. 1.6

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Does a scalene always have to have unequal sides?
Describe the error in writing the sentence as an equation a number n is 5 more than 12
Are 32/36 and 24/28 proportional
Is 0.08 equivalent to 80/100
Katrina saved $200 to purchase your tablet her father spent ten times as much money to buy his new computer how much did her father's computer cost

Three rectangular prisms have a combined volume of 518 cubic feet. Prism A has one-third the volume of prism B and C have equal volume. What is the volume of each prism?

Answers

Prisim A and B are 173 and Prisim C is 172 add those together and you get 518

A storage box has a height of 8 inches, length of 4 inches, and a width of 4 inches. I use cubes with an edge length of 12 inch. If the box is completely full, how many cubes will fit in the storage box?

Answers

Answer:

Step-by-step explanation:

8×4=32×4=128

12×3=36

128÷36= 3.5

but u need to put full cubes which would be 3

The answer is 3 I don’t really know how to explain it

Convert 9 over 4 into mixed numbers

Answers

9/4
well, 4 times 2 is 8, there would be a quarter left over
answer: 2 1/4

so it would be 2 and a quarter.

Hope this helped :)

15 cm equals how many mm

Answers

Hey There!

15 cm equals 150mm

In measurement you multiply bigger units to find smaller units.

Since, 1cm=10mm you multiply 15*10=150.

Thus,your answer is 150

Thank You!

A centimeter (cm) is 1/100 of a meter and a millimeter (mm) is 1/1000 of a meter. Therefore, there are 10 mm in 1 cm, so you can multiply 15 cm by 10 mm per cm to get 150 mm.

Explain how you know 21/30 is greater than 2/3

Answers

Simple.

to figure out if they are either: equal, greater, or smaller...

First, find a common denominator...

$(21)/(30)$

and

$(2)/(3) * (10)/(10) = (20)/(30)$

Now, we can obviously make the assumption that $(21)/(30)$ is greater than $(20)/(30)$ .

Thus, your answer.

if you do 2 X 10, it's 20.
if you do 3 X 10, it's 30.

so, the fraction would be 20/30, and with the denominators the same, now you can see that 21 is greater than 20.

hopes this helps (:

The average rate of the first part of Yi’s walk on a park loop was 4 miles per hour. She then met up with a friend and the two walked the rest of the way at an average rate of 5 miles per hour. The entire 3-mile walk took Yi 42 minutes (0.7 hour). Which equation can be used to solve for x, the time in hours that Yi spent walking before meeting her friend?

Answers

so she walked during this time with 4 miles per hour (x*4)

during the rest of the way (which is 0.7-x, as the whole way took her 42 minutes, so the rest is 0.7-x) she walked with 5 miles per hour - the distance was (0..7-x)*5 m/h

the total distance was 3 miles, so if we sum the two distances, we will get 3 miles:

x*4+ (0.7-x)*5=3

let's remove the bracket:

4x+0.7*5-5x=3

4x+3.5-5x=3

subtract 3.5 from both sides:
4x-5x=3-3.5
-x=-0.5

multiply both sides by (-1)
x=0.5:

so she walked for half an hour alone, that is for 30 minutes!

Answer:

D, 4x + 5(0.7 – x) = 3.

Step-by-step explanation:

yw egen2020