All categories

2 years ago

??????????????????????????

Mathematics

2 answers:

solniwko [45]2 years ago

7 0

Answer:

Seconds in second row: 48
Glasses in third row: 11

Step-by-step explanation:

Answer for seconds in second row:

Set up a proportion: $\frac{5}{20} = \frac{12}{x}$
Cross multiply, then divide: 20 × 12 = 240, 240 ÷ 5 = 48

Answer for glasses in third row:

Set up a proportion: $\frac{5}{20} = \frac{x}{44}$
Cross multiply, then divide: 44 × 5 = 220, 220 ÷ 20 = 11

I hope this helps!

djyliett [7]2 years ago

5 0

Step-by-step explanation:

1 )48

2 )11

answer is this

You might be interested in

Please solve these 2 ;-; y = 2x – 6 y = –4x + 3

Yuri [45]

Answer:

x = 3/2 | y = -3

Step-by-step explanation:

Given equations:

y = 2x - 6. . . .(i)
y = -4x + 3. . . . (ii)

Substituting from equation (i) for y:

==> 2x - 6 = -4x + 3

==> 2x + 4x = 6 + 3

==> 6x = 9

dividing both sides by 3:

==> 2x = 3

==> x = 3/2

Substituting 3/2 for x in equation (i):

==> y = 2(3/2) - 6

==> y = 3 - 6

==> y = -3

3 0

2 years ago

Read 2 more answers

Katie and becca each bought a new book for $50 . Katie sold her book to the bookstore for 25% less than the original price. . Be

r-ruslan [8.4K]

$\text{Lets find the prices in which they sold their books for}\\\\\text{Katie:}\\\\\text{She sold the book for 25\% less than the original price, so multiply 50 by}\\\text{0.25 and subtract}\\\\50*0.25=12.5\\\\50-12.5=37.50\\\\\text{Becca:}\\\\\text{Becca sold the book for 40\% less than the original price, calculate how}\\\text{much she sold it for}\\\\50*0.40=20\\\\50-20=30\\\\$ $\text{We need to find how much more money Katie made than Becca, so subtract}\\\text{Becca's cost from Katie's cost}\\\\37.50-30=7.50\\\\\boxed{\text{Katie received \$7.50 more than Becca}}$

4 0

3 years ago

Read 2 more answers

Find the equation of the linear function represented by the table below in slope-

Sladkaya [172]

Answer:

y = -4x - 1

Step-by-step explanation:

Do the slope formula first to find the slope. Next do point slope form to find the y intercept and write the equation in slope intercept form.

7 0

2 years ago

Today joelle walked at a rate of 3 miles per hour and she ran 15 minutes at a rate of 6 miles per hour.How many total miles did

svetoff [14.1K]

I added a screenshot with the complete question

Answer:
Total miles = 2.5 miles

Explanation:
1- While walking:
We are given that Joelle walked 20 minutes at a rate of 3 miles per hour.
This means that she walked $\frac{20}{60} = \frac{1}{3}$ of an hour at a rate of 3 miles per hour
The formula that relates distance, time and velocity is:
Distance = velocity * time
Substitute with the givens to get the distance she covered while walking:
Distance = 3 * $\frac{1}{3}$ = 1 mile

2- While running:
We are given that Joelle ran 15 minutes at a rate of 6 miles per hour
This means that she ran $\frac{15}{60} = \frac{1}{4}$ of an hour at a rate of 6 miles per hour
The formula that relates distance, time and velocity is:
Distance = velocity * time
Substitute with the givens to get the distance she covered while running:
Distance = 6 * $\frac{1}{4}$ = 1.5 miles

3- getting the total mileage:
Total distance she covered = distance while walking + distance while running
Total distance she covered = 1 + 1.5
Total distance she covered = 2.5 miles

Hope this helps :)

4 0

3 years ago

A cube has a volume of 64 cubic units. What is its surface area

Alona [7]

The volume of a cube is length x width x depth. In a cube all would be equal therefore.

x^3= 64 
x =4 
The area in square feet of one side would then be length x width 

There are 6 sides so the surface area of the cube would be 

(4)(4)(6) = 96 square feet

7 0

3 years ago

Read 2 more answers