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
ollegr [7]
2 years ago
14

A square hole 7.50 cm along each side is cut in a sheet of copper. (a) Calculate the change in the area of this hole resulting w

hen the temperature of the sheet is increased by 49.0 K. cm2(b) Does this change represent an increase or a decrease in the area enclosed by the hole
Mathematics
1 answer:
Katena32 [7]2 years ago
3 0

Answer:

it increases the the hole

Step-by-step explanation:

You might be interested in
What is the equation of the line that is perpendicular to the given line and passes through the point (3, 0)?
olga2289 [7]

Step 1

<u>Find the slope of the given line</u>

Let

A(-3,2)\ B(2,-1)

slope mAB is equal to

mAB=\frac{(y2-y1)}{(x2-x1)} \\ \\ mAB=\frac{(-1-2)}{(2+3)} \\ \\ mAB=-\frac{3}{5}

Step 2

<u>Find the slope of the line that is perpendicular to the given line</u>

Let

CD ------> the line that is perpendicular to the given line

we know that

If two lines are perpendicular, then the product of their slopes is equal to -1

so

mAB*mCD=-1\\ mAB=-\frac{3}{5} \\ mCD=-\frac{1}{mAB} \\ mCD=\frac{5}{3}

Step 3

<u>Find the equation of the line with mCD and the point (3,0)</u>

we know that

the equation of the line in the form point-slope is equal to

y-y1=m(x-x1)\\\\ y-0=\frac{5}{3} *(x-3)\\\\ y=\frac{5}{3} x-5

Multiply by 3 both sides

3y=5x-15

5x-3y=15

therefore

the answer is

the equation of the line that is perpendicular to the given line is the equation 5x-3y=15

4 0
3 years ago
Read 2 more answers
Help due in 45 minutes!!
Nat2105 [25]

Answer:

(14,-1)

Step-by-step explanation:

okay so first you need to use the "x=4y+10" in the first equation.

Rewrite as

3(4y+10) +11y=7

Distribute the 3(4y+10)

Rewrite as

12y+30

You'll have the equation

12y +30 +11y= 7

Subtract the 7 from both sides

12y+30+11y-7= 0

Combine like terms

23y+23=0

the best thing to do here is divide the equation by 23.

23/23 = 1

you'll have

y + 1 = 0

this simplifies to

y= -1

use this y value to solve for x

the easiest way to do this is start with the equation

x = 4y +10

Substitute the y for -1

x = -4(-1) +10

x = 4 +10

x = 14

the solution point is

(14,-1)

3 0
3 years ago
Help please! This is hard
Nutka1998 [239]

Answer: 200°C + 273.15 = 473.15K

               300K − 273.15 = 26.85°C

I hope this helps bye

7 0
4 years ago
while justin is in training he is to drink 500ml of water 4 times per day how many liters of water will that be for one week
taurus [48]

Answer:

14000 liters

Step-by-step explanation:

500 * 4 = 2000

2000 * 7 = 14000

6 0
3 years ago
Leah predicts that she will need to contribute $7,000 per year for college tuition and already has $4,000 in savings. She is beg
Sveta_85 [38]

Answer:

125 Dollars

Step-by-step explanation:

Total fee = 7000

Amount in hand = 4000

Amount to be saved in 2 years = 7000 - 4000 = 3000

No of months in 2 years = 12 x 2 = 24

Per month saving = 3000 / 24 = 125 $

4 0
3 years ago
Other questions:
  • A cube has a volume of 64 cubic cm. What is the length of one side?
    6·1 answer
  • Ian has a list of 3 visit on a road trip with some friends . He needs to finalize the plans for the trip . How many different or
    5·1 answer
  • A clothing vendor estimates that 78 out of every 100 of its online customers do not live within 50 miles of one of its physical
    6·1 answer
  • What is the value of k for which the following equation has one solution?<br>|14+ 7x| - 15 = k​
    15·1 answer
  • Th SEDelco
    11·2 answers
  • Put these numbers in order from least to greatest.
    11·2 answers
  • Need as soon as possible
    11·1 answer
  • Work out 1/8 of 720<br> How do I work this out please?
    10·1 answer
  • How do I solve this <br>​
    14·1 answer
  • Christina​'s time for a race was 26.3 seconds. Another​ runner's time was 8.44 seconds faster. Write and evaluate an equation wi
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!