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
ratelena [41]
3 years ago
15

The temperature of an oven went from 320° to 280°. What was the percent decrease in temperature?

Mathematics
1 answer:
user100 [1]3 years ago
4 0
We have to calculate the percent decrease in temperature and to choose the correct answer. We can solve the proportion: 320 / 280 = 100 / x; then we will cross multiply. 320 x = 280 * 100; 320 x = 28,000; x = 28,000 : 320 ; x = 87.5 %. Finally : 100% - 87.5 % = 12.5 %. Answer: The percent decrease is C. <span>12.5 %.</span>
You might be interested in
Which equation represents a nonlinear function?
Luden [163]
The correct answer is:  [A]:  " <span>x(y – 5) = 2 " .
</span>_____________________________________________________
Consider:
_____________________________________________________
Choice:  [A]:  " x(y–5) = 2 " ; 

Divide each side by "x" ;

" [x(y – 5)] / x  = 2/x " ; 

  →  y – 5 = 2/x  ;

Add "5" to each side of the equation:

y – 5 + 5 = 2/x + 5 ;

  →  y = 2/x + 5  ;  not a line;  since one cannot divide by "zero" ; there would be no "point" on the graph at "x = 0".  So, this answer choice:  [A] is correct.
_______________________________________________________
Choice [B]:
 
y -2x -18 = 0 

y - 2x = 18

y = 18 + 2x ;  y = 2x + 18 ; is a line.
_________________________________________________
Choice C)  3y + 12 - 6x = 5 ; 

3y = 5 - 12 + 6x ; 

3y = -7 + 6x ;  3y = 6x - 7 ;  y = 6x/3 - 7/3 ;  y = 2x - 7/3 ;  is a line.
_________________________________________________
Choice:  [D]:

2(y+x) = 0 ;

[2*(y+x)] / 2 = 0/2 ;  y + x = 0 ;  y = -x ;  is a line.
_________________________________________________
4 0
3 years ago
Read 2 more answers
Need help with problem 5, Thank you!<br><br><br> Sorry for the glare
MAXImum [283]

Answer:

x = 57

Step-by-step explanation:

A triangles degrees add up to 180

67 + 56 = 123

180 - 123 = 57

6 0
3 years ago
What is 2400 hours after 5pm
Art [367]
Given that 24 hours is one full day, we can deduce that 2400 hours is 100 days. One full cycle from that time is equivalent to that time therefore, 2400 hours after 5pm is 5pm.
7 0
3 years ago
Read 2 more answers
A shortage of gold causes the price of gold wire to increase by 140%. If 10 feet of gold wire previously cost $50, what is the n
Marianna [84]
The increase in price is 140% of the original price.
The original price was 100% of the original price since 100% is a whole quantity.
Now the new price is 140% more than it was, so the new price is
100% + 140% of the old price.
100% + 140% = 240%

Now we find 240% of $50.
To find a percent of a number, multiply the percent by the number.

240% of $50 =
= 240% * $50
= 2.4 * $50
= $120

Answer: 10 ft of gold wire now costs $120
Gold wire now costs $12 per foot.
8 0
4 years ago
Help Asap Pls Hurry I Will Give Brainliest!
dexar [7]
The answer is B
step by step explanation:
4 0
3 years ago
Read 2 more answers
Other questions:
  • A gardener wants to run a border around the outside of her garden. She plots it on a grid to plan how much she will need. The ga
    8·1 answer
  • You want a large bowl of salad to share with your friends. Your brother eats 1/3 of it before they came over. What fractional po
    7·1 answer
  • A shelf is the shape of a triangle. Find the angles of the triangle if the measure of the angle are in the ratio x:x:4x.
    10·1 answer
  • Add.<br><br><br><br> Express your answer in simplest form<br><br><br> 7+1 7/4<br><br> 10+4 1/4
    8·1 answer
  • Help plz. What are the zeros of the function below? Check all that apply. (Picture is added)
    7·1 answer
  • An inlet pipe can fill an empty swimming pool in 5 hours, and another inlet pipe can fill the pool in 2 hours. How long will it
    15·1 answer
  • I need help on this pls
    7·1 answer
  • PLS HELP ME! FOR 50 POINTS!!! I will give brainliest!
    13·1 answer
  • I need help with these questions (see image). Please show workings.<br>​
    13·2 answers
  • Hey I’ve got the answer for the first question but I’m stuck on this one 5^-3 X 2^-1
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!