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Eddi Din [679]
3 years ago
5

Find the constant of proportionality k. Then write an equation for therelationship between xandy(Example 2)2. X8 16y 10 2030 40E

SSENTIAL QUESTION CHECK-IN4. How can you represent a proportional relationship using an equation?20 nit 92432

Mathematics
1 answer:
klio [65]3 years ago
8 0
2) y= x times 5
The constant proportion is k=5

3) y=x times 4
The constant proportion is k=4

4)If total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn.
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A solid rectangular box with height 5 m and square base with side lengths 4 m is built using a lightweight material whose densit
elena55 [62]

Answer:

627200LJ

Step-by-step explanation:

Height of box=5 m

Side of square base=4 m

Volume of rectangular box=l\times b\times h

Using the formula

Volume of rectangular box=4\times 4\times 5=80m^3

Density of material=800kg/m^3

We know that

Mass=Density\times volume

Using the formula

Mass of  rectangular box=80\times 800=64000 kg

Gravity=g=9.8m/s^2

Weight of  rectangular box,F=mg=64000\times 9.8 N

Let L  be the vertical distance traveled by box

Total work done =W=F\times displacement

Therefore,total work done against gravity =64000\times 9.8 L=627200 L J

Hence, the box requires work against gravity=627200LJ

5 0
3 years ago
A photograph negative measures 1 7/8 inches by 2 1/2 inches. The printed pictures is to have its longer dimension be 4 inches. H
Tresset [83]

4/1 / 5/2 = 4/1 * 2/5 = 8/5

1 7/8 = 15/8

15/8 * 8/5 = 120/40 = 12/4 = 3 inches

 shorter side should be 3 inches

6 0
3 years ago
Help? pls? (10 points) (image down below to make it easier to understand.)
dusya [7]
This is middle school??? AinT no way
7 0
2 years ago
Read 2 more answers
HELP ME PLEASEEE IM LITERALLY FAILING BYE
sweet-ann [11.9K]

Answer:

A)$2.50 x b = total cost

B) 9 x 2.50 = $22.5

C) 50 x $2.50 = $125 - $14.75 = $110.25

4 0
2 years ago
Read 2 more answers
How many 1/3 cups of ice cream can you make from 1/7 cup
OlgaM077 [116]
Well first you have to make the denominators equal by finding a common denominator. in this case 21, but whatever you do to the bottom you do to the top. so 1/3 times 7/7 equals 7/21 and 1/7 times 3/3 equals 3/21.
 
so how many 7/21 cups of ice cream can you make from 3/21 i think  about none but remember i could be wrong
8 0
3 years ago
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