1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Novay_Z [31]
2 years ago
10

The strength of a rectangular beam varies jointly with its width and the square of its thickness. if a beam 7 7 inches wide and

3 3 inches thick supports 2520 2520 ​pounds, how much can a beam of the same material that is 2 2 inches wide and 1 1 inch inch thick​ support?
Mathematics
1 answer:
Ugo [173]2 years ago
3 0
To solve the joint variation question we proceed as follows:
let the strength be p, the width be w, and thickness be t.
thus:
p=kwt
where k is the constant of proportionality.
p=2520 when w=7 and t=3
thus
2520=7*3*k
hence
k=120
thus the formula for variation is:
p=120wt
hence the value of p when w=2 in and t=1 in will be:
p=120*2*1
p=240 pounds

You might be interested in
What is the greatest whole number that rounds to 621860
konstantin123 [22]
621,864
Since the 4 is a smaller digit than a 5, the 6 in the tens place would stay the same while the 4 would become a 0.
8 0
2 years ago
Help me please <br><br> will get rewared brainly if correct answer
larisa [96]

Well, split it into 3 shapes

21 x 10 = 210

3 x 6 = 18

2 x 6 = 12

210 + 18 + 12 = 240 square cm

imahe for more context

plzzz give me brainliest

5 0
3 years ago
Solve the systems by the addition method 2x + y = - 1x - 2y = - 4
inna [77]

Answer:

x = -6/5

y =7/5

Step-by-step explanation:

2x + y = - 1

x - 2y = - 4

Multiply the first equation by 2 so we can eliminate y

2(2x + y = - 1)

4x + 2y = -2

Add this to the second equation

4x + 2y = -2

x - 2y = - 4

---------------------

5x + 0y = -6

Divide by 5

5x/5 = -6/5

x = -6/5

Multiply the second equation by -2 so we can eliminate x

-2(x - 2y = - 4)

-2x+4y = 8

Add this to the first equation

2x + y = - 1

-2x+4y = 8

---------------------

0x + 5y = 7

Divide by 5

5y/5 = 7/5

y =7/5

6 0
3 years ago
Translate the expression into a word phrase. k + 12 A. a number less than 12 B. 12 more than a number C. the product of a number
Burka [1]
The answer is b) 12 more than a number

when you use the word "more than" it means addition. when you use the word "less than" it means subtraction. when you use the word "product of" it means multiplication. when you use "quotient of" it mean division.

hope that helps, God bless! <span />
8 0
3 years ago
Compare the value of the 2s and 5s in 55,220
Mademuasel [1]
Well the 2 in the tens place is ten times as many as the 2 in the hundreds place.Also the 5 in the thousand place is 10 times as many as the 5 in the ten thousand place
3 0
3 years ago
Read 2 more answers
Other questions:
  • Tim is selling tickets to a school sporting event to raise money for his club. He put some extra money in his box before he bega
    13·1 answer
  • Regardless of the algorithm being used, a search through an array is always performed:
    8·1 answer
  • The Wilsons drove 324 miles in 6 hours if they drilled the same number of miles each hour how many miles did they drive in 1 hou
    10·1 answer
  • I need help on this and can you tell me how to solve it
    14·1 answer
  • Solve for x : 7/8 = 21/x
    8·2 answers
  • Dimitri is solving the equation x2 – 10x = 21. Which value must be added to both sides of the equation to make the left side a p
    12·2 answers
  • Which choice represents the simplified exponential expression?<br> (7^4)^6
    11·2 answers
  • HCF and LCM for 4 8 15<br>and example
    12·2 answers
  • Write the absolute value equations in the form x−b =c (where b is a number and c can be either number or an expression) that hav
    8·1 answer
  • Dried rose petals can be used to make rose water. Fatima buys 0.454 kilogram
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!