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Virty [35]
3 years ago
13

A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x2h

cm3. Find the rate at which the volume of the box is changing when the edge length of the base is 10 cm, the edge length of the base is increasing at a rate of 3 cm/min, the height of the box is 5 cm, and the height is decreasing at a rate of 1 cm/min.
A.The volume of the box is decreasing at a rate of 200 cm3/min.
B.The volume of the box is increasing at a rate of 400 cm3/min.
C.The volume of the box is decreasing at a rate of 400 cm3/min.
D.The volume of the box is increasing at a rate of 200 cm3/min.
Mathematics
1 answer:
VMariaS [17]3 years ago
4 0

Answer:

aaaaa.List down 5 steps in creating 3d Model

digitally enhanced product design for a

paper bag.

1.__________________________________

2.__________________________________

3.__________________________________

4.__________________________________

5.__________________________________

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When David was asked how old he was, he said " I'm three times younger than my dad, but twice as old as Rebecca. " Then little R
daser333 [38]

Using a system of equations, it is found that David is 12 years old.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

The variables are given as follows:

  • Variable x: David's age.
  • Variable y: Dad's age.
  • Variable z: Rebecca's age.

David is three times younger than the dad and twice as old as Rebecca, then:

  • x = y/3 -> y = 3x.
  • x = 2z.

Rebecca is 30 years younger than the dad, hence:

z = y - 30.

Then, since x = 2z and z = y - 30 and y = 3x, we solve for x to find David's age.

x = 2(y - 30)

x = 2(3x - 30)

x = 6x - 60

5x = 60

x = 60/5

x = 12.

David is 12 years old.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

8 0
2 years ago
Please help for 10 points and help with both questions please.
DedPeter [7]
Question 21 
Selling price = 18 + 18 x 36/100

Question 22

Discount price = 80 - 80x10/100

Selling price = discount price + discount price x 7/100
3 0
3 years ago
Read 2 more answers
870.497 ÷ 0.823=?<br> round your answer to the nearest whole number
jarptica [38.1K]

Answer:

870.497 ÷ 0.823=1.057 so to the nearest whole number it would be 1

Step-by-step explanation:

cause 0-4 numbers are rounded down

5 0
2 years ago
Read 2 more answers
What is the value of 7 in the number 53.73
Svetlanka [38]
00.7 is the value
(It’s not allowing me to post cuz it’s short)
7 0
3 years ago
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the sum of kyras and calebs age is 37. calebs age is equal to twice the quantity of kyras age decreased by 4. let k represent ky
nasty-shy [4]
Caleb - c
Kyras - k

k+c=37
c=2k-4

k+(2k-4)=37
3k=41
k=41/3= ~13.67 years old

c=37-k
c=(111-41)/3
c=70/3=~23.33 years old
7 0
2 years ago
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