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
denis-greek [22]
3 years ago
12

At the instant that a cake is removed from the oven, the temperature of the cake is 350°F. After 10 minutes, the cake's temperat

ure is 200°F. If the temperature of the room is 70°F, how much longer will it take for the cake to cool to 90°F? (Round your answer to the nearest 5 minutes.)
a) 15 min
b) 20 min
c) 25 min
d) 30 min
e) 35 min
Please show your work. Thanks~
Mathematics
1 answer:
BARSIC [14]3 years ago
8 0
Once the cake is removed from the oven, it has been exposed to the room temperature of 70°F. After 10 minutes, the cake's temperature decreased to 200°F, which is 150°F cooler than it initially was (350°F). As for the what is asked, 90°F is 260°F cooler than its original temperature (350°F).

This problem can be expressed in a ratio: 
10mins:150<span>°F = N:260</span><span>°F
where N is how long it will take for</span><span> cake to cool to 90°F

</span>150<span>°FxN=10x260
</span>150N=2600
N=2600/150
N=17.33
N<span>≈20 minutes

Thus, it takes approximately 20 minutes </span><span>for the cake to cool to 90°F</span>
You might be interested in
The length of the base and the height of a triangle are numerically equal. Their sum is 6 less than the number of units in the a
Troyanec [42]
Base = Height, Let them be x.

( x \times x) \div 2 = (x + x) + 6 \\ x ^{2} \div 2 = 2x + 6 \\ \frac{1}{2} x^{2} - 2x - 6 = 0
Solve quadratic equation:
x=6, x=-2(rejected because base and height is positive)

6x6/2 =18
6 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs.
Julli [10]

Answer:

1 = A

2 = D

3 = B

4 = C

Step-by-step explanation:

3 0
3 years ago
Line AB and line CD intersect at point E, with point E between A and B and between C and D. Which rays are opposite rays?
olchik [2.2K]

Answer:

EA, EB, EC and ED are opposites rays.

Step-by-step explanation:

Given that,

Line AB and line CD intersect at point E.

According to figure,

We need to find opposite rays

Using diagram

We draw a first line AB and second line CD which is intersect of AB at point E.

Now, EA and EB is called opposite ray of first line AB.

Similarly,

EC and ED is called opposite ray of first line CD.

Hence, EA, EB, EC and ED are opposites rays.

3 0
3 years ago
if you multply two decimals that are less than 1 , can you predict whether the product will be less than or greater than either
nekit [7.7K]
Yes.  Multiplying anything by a number less than one will decrease the original number.  So multiplying two decimals will result in a number less than either one.
7 0
3 years ago
Which value for x makes the sentence true? 12x-5 = 5x + 23<br><br> A. 6<br> B. 9<br> C. 4 <br> D. -1
hammer [34]

Answer:

C

Step-by-step explanation:

If you plug in 4 to the equation it looks like this:

48-5= 20+23. Subtract 5 and add 23, to get 43=43. That statement is true so it's 4.

3 0
3 years ago
Other questions:
  • Who is vladimir lenin?
    13·2 answers
  • (221x3 + 154x2 + 228x + 41) / (17x + 4) Please help me
    9·2 answers
  • Evaluate each function at the given value.<br><br>f(x)=10x2x at x=4
    11·2 answers
  • 15. Mr. Taylor rides his moped down the country road in front of his house. His wife and their two sons ride bicycles in the opp
    10·1 answer
  • There are 8 classroom in a particolar
    14·1 answer
  • Your final bill at the restaurant is $120 including a 20% tip. What was the cost of the original bill?
    9·2 answers
  • what is 2 5/8 as a percent (can be written as a mixed number or decimal rounded to the nearest tenth)
    5·1 answer
  • How do I solve 3x-y=15
    13·1 answer
  • Please help me with this question is 8 grade question​
    14·2 answers
  • Find the derivative<br>g(t)=7t4 –4t3 +6t2 +9t–19
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!