In a science experiment, the temperature of a substance is changed from 42 degrees to -54 degrees at an average rate of -12 degrees per hour. Over how many hours does the change take place?

Answers

Answer 1

There are a couple of ways to do this. The easiest is to take the number of degrees between 42 and - 54 and divide by 12.

Method

the number of degrees is abs(42) + abs(-54) = 42 + 54 = 96

Now divide by 12

Hours = 96 / 12 = 8 hours.


Related Questions

How many hundreds is 4400

Answers

Answer:

44 hundreds.

Step-by-step explanation:

4400/100 = 44 :)

Help me ASAP for this question!
Select all that apply.
Which of the following names a line in the drawing

Answers

Answer:

I believe its the third one, its makes a symmetrical line so that's my guess

Step-by-step explanation:

The rest don't make a line

I need help with this problem

Answers

Answer:

             C.

Step-by-step explanation:

If two parallel lines are cut by a transversal then alternate exterior angles are equal.

Therefore:

3x - 8 = x + 88

+8-x        +8-x

   2x = 96

    ÷2    ÷2

      x = 48

In golf, each hole has a score called par, which is the number of strokes a good golfer should take to get the ball in the hole. Scores that are under par are represented by a negative number. The table below shows the golf scores for team members in a golf tournament. If the team’s total score is -5, what is Kwame’s score?
Golfer
Score
Kamar
-10
Anais
-13
Kwame
?

Answers

Answer:its #

Step-by-step explanation:

its #

even number minus even number is what

Answers

It’s....an even number

(brainliest) help me asap! :D

Answers

Answer: 2

Step-by-step explanation:

can anybody solve this for me​

Answers

Step-by-step explanation:

Square root of 25 can be +5 or -5

Square root of 16 can be +4 or -4.

As -5 can be square root of 25 and +4 can be a root of 16 , -5 < +4 . That's why square root of 25 could be less than square root of 16.

Don’t understand. Please help me

Answers

Answer:

Option D

Step-by-step explanation:

SAS criterion- two sides and an included angle.

This means that we have

(i) AC = DE

(ii) ∠C = ∠D

(iii) the third should be another side so that there are 2 sides with an included angle.

Hence, it will be

BC = FE                     (Option D)

Hope this helps you!

-3(v - 8) simplify expression tell me full answer and then tell em your tiya account and ill add you

Answers

Answer:

-3v + 24

Step-by-step explanation:

-3(v - 8)

-3v + 24

you cannot simplify this expression any further

7v=4v-32 how do i solve this

Answers

Answer:

v = [tex]-\frac{32}{3}[/tex]

Step-by-step explanation:

7v = 4v - 32

7v - 4v = -32

3v = -32

v = [tex]-\frac{32}{3}[/tex]

Answer:

10.68

Step-by-step explanation:

7v=4v-32

-4v  -4v

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

3v=-32

v=10.67

So then you'd plug that into the thing:

7(10.67)=4(10.67)-32

74.69=42.68-32

10.68

CORRECT ANSWER GETS BRAINLYEST Drag each set of coordinates to the correct location on the table. Not all sets of coordinates will be used. Points that two lines pass through are given in the table. Match each point of intersection to the correct pair of lines. {(1, 1) |(1, -1)] [(-4,-7) ((-5, -4) [(4,7) (-4,-5) Line 1 Line 2 Point of Intersection (2,5), (-3.-5) (3.0), (0.-3) (1, 1), (2.3) (0,3), (2,5) (1.0), (0.-1) (0.3). (-2,-1) (2.0), (0, 2) (4,5), (3.3)​

Answers

Answer:    

(-4,-7)

(4,7)

(-4,-5)

(1,-1)

Step-by-step explanation:

 

Answer: (-4,-7) (4,7) (-4,-5) (1,-1)

Step-by-step explanation:

Please someone help me I’m confuseddddd :(

Answers

Answer:

red

Step-by-step explanation:

big red

Answer: red
Hope that helps!

a $.50 comic book if the sales tax rate is 7.5$​

Answers

Answer:

.54

Step-by-step explanation:

can anybody help me on this thanks

Answers

Answer:

a) t=98

b) b=32

Step-by-step explanation:

a)  4t/7  -20=36r

     r=1

     4t/7-20=36

     [tex]\frac{4t-140}{7}[/tex]=36

     4t-140=252

     4y=392

      t=98

b) 2k/5=b/2-12

k=10

20/5=b/2-12

4=[tex]\frac{b-24}{2}[/tex]

8=b-24

b=32

What is the positive solution to the equation 0=1/3x²-3?

-

Answers

Answer:

x = -3 or +3

Step-by-step explanation:

x²/3 = 3

x² = 9

-> x = -3 or +3

Two kids at a summer camp, Ariel and Tori, are competing in a potato sack race. Anel is
younger, so she is given a head start of 10 yards. When the race starts, Ariel hops at a rate
of 1 yard per second, and Tori hops 3 yards per second. Eventually, Tori will overtake Ariel
How long will that take?
Write a system of equations, graph them, and type the solution

Answers

Answer:

5 seconds?

Step-by-step explanation:

Ariel y = x + 10

Tori y = 3x

(5,15)

Can someone please help me answer this because it is due in a couple of minutes. Please help

Answers

Answer:

X=-2

Step-by-step explanation:

Hope it helps

big brain question 21

Answers

Answer: Lol its A

Step-by-step explanation:

Answer:

It's the first one.

can some one help plz

Answers

D. A. E. That’s in order hope it helps

5% of eggs that are shipped arrive broken. If 14 eggs are broken, how many were shipped?

Answers

Answer:

14.7

Step-by-step explanation:

Answer:

https://brainly.com/question/19844359?answeringSource=feedPublic%2FhomePage%2F1

Step-by-step explanation:

here's a link to the answers

please show the working and answer. you can take a picture for the working.

Answers

Answer:

(a) The area of the triangle is approximately 39.0223 cm²

(b) ∠SQR is approximately 55.582°

Step-by-step explanation:

(a) By sin rule, we have;

SQ/(sin(∠SPQ)) = PQ/(sin(∠PSQ)), which gives;

5.4/(sin(52°)) = 6.8/(sin(∠PSQ))

∴ (sin(∠PSQ)) = (6.8/5.4) × (sin(52°)) ≈ 0.9923

∠PSQ = sin⁻¹(0.9923) ≈ 82.88976°

Similarly, we have;

5.4/(sin(52°)) = SP/(sin(180 - 52 - 82.88976))

Where, 180 - 52 - 82.88976 = ∠PQS = 45.11024

SP = 5.4/(sin(52°))×(sin(180 - 52 - 82.88976)) ≈ 4.8549

Given that RS : SP = 2 : 1, we have;

RS = 2 × SP = 2 × 4.8549 ≈ 9.7098

We have by cosine rule, [tex]\overline {RQ}[/tex]² =  [tex]\overline {SQ}[/tex]² +  [tex]\overline {SR}[/tex]² - 2 × [tex]\overline {SQ}[/tex] × [tex]\overline {SR}[/tex] × cos(∠QSR)

∠QSR and ∠PSQ are supplementary angles, therefore;

∠QSR = 180° - ∠PSQ = 180° - 82.88976° = 97.11024°

∠QSR = 97.11024°

Therefore;

[tex]\overline {RQ}[/tex]² =  5.4² +  9.7098² - 2 ×  5.4×9.7098× cos(97.11024)

[tex]\overline {RQ}[/tex]² ≈ 136.42

[tex]\overline {RQ}[/tex] = √(136.42) ≈ 11.6799

The area of the triangle = 1/2 ×[tex]\overline {PQ}[/tex] × [tex]\overline {PR}[/tex] × sin(∠SPQ)

By substituting the values, we have;

1/2 ×[tex]\overline {PQ}[/tex] × [tex]\overline {PR}[/tex] × sin(∠SPQ)

1/2 × 6.8 × (4.8549 + 9.7098) × sin(52°) ≈ 39.0223 cm²

The area of the triangle ≈ 39.0223 cm²

(b) By sin rule, we have;

[tex]\overline {RS}[/tex]/(sin(∠SQR)) = [tex]\overline {RQ}[/tex]/(sin(∠QSR))

By substituting, we have;

9.7098/(sin(∠SQR)) = 11.6799/(sin(97.11024))

sin(∠SQR) = 9.7098/(11.6799/(sin(97.11024))) ≈ 0.82493

∠SQR = sin⁻¹(0.82493) ≈ 55.582°.

What is the surface temperature of Alpha Centauri A in Kelvin?

Answers

Answer:

5,790 K

Step-by-step explanation:

Hope this helps. :)

In ΔABC, the measure of ∠C=90°, the measure of ∠A=57°, and CA = 2.6 feet. Find the length of BC to the nearest tenth of a foot.

Answers

Step-by-step explanation:

The answer for length of BC is 4.0 feet.

Need Help ASAP!! Look at the photo.

Given: ∠1 and ∠2 are complementary angles.
Prove: ∠3 and ∠4 are complementary angles.

Answers

Answer:

both add up to 90 degrees, which is a complementary angle, separately, each is 45 degrees

Step-by-step explanation:

PLS HELP ASAP

Merlin wants to make more money selling fake beards this month than
he did last month. All black beards in his shop cost the same amount of
money, and all red beards in his shop cost $25.
Let B represent the number of black beards and R represent the
number of red beards that Merlin can sell to make more money than he
made last month.
20B+25R>350
According to the inequality, how much money did Merlin make last
month, and how much does each black beard cost?
Can Merlin achieve his goal by selling 6 black beards and 8 red
beards? explain why.

Answers

Answer:

According to the inequality, how much money did Merlin make last  month more than? -> 350 dollars

Can Merlin achieve his goal by selling 6 black beards and 8 red

beards? explain why.

Yes, black beard sum will total up to $120 and red beard sum will total up to $200, $120+$200 = $320

$320 < $350

Step-by-step explanation:

plz mark as brainliest!

19
8
How do you rename this as a mixed number

Answers

Answer:

2 3/8

Step-by-step explanation:

Answer:

Assuming you meant 19/8, the answer would be 2 and 3/8

Step-by-step explanation:

How many times does 8 go into 19? Twice, plus you will have 3 leftover since 8 x 2 is only 16 and not 19. That 2 stays a 2 and the left over 3 is 3/8, so your answer is 2 + 3/8

1/2(12x-4)=12-10(x+1)

Answers

Answer:

x=3/2 or in decimal form it is x=1.5

Step-by-step explanation:

Answer:

X=1/4 (or 0.25)

Step-by-step explanation:

6x-2=12-10x-10

6x-2=2-10x

6x+10x=2+2

16x=4

x=4/16

x=1/4

Practice One Simple Equation Together
1. If -17(x - 2) = 16 + x, what is the value of x?
(A). -2
(B). -1
(C). O
(D). 1
(E). 2

Answers

Answer:

(D). 1

Step-by-step explanation:

-17(x - 2) = 16 + x

-17 × x - (-17) × (2) = 16 + x

-17x + 34 = 16 + x

-17x - x = 16 - 34

-18x = - 18

18x = 18

x = 18/18

x = 1

Thus, The value of x is 1

-TheUnknownScientist

Eli bought snacks for his team's practice. He bought a bag of popcorn for $3.50 and a 20-pack of juice bottles. The total cost before tax was $35.70. How much was each
bottle of juice?

Answers

Answer: $1.61

Step-by-step explanation:

$35.70 - $3.50 = $32.2

$32.2 ÷ 20 = $1.61

Answer:

1.61

Step-by-step explanation:

35.70 - 3.50 = 32.2

32.2 divided by 20

= 1.16

Simplify -2.6f+0.2f-16-5​

Answers

Answer:

-2.4f - 21

Step-by-step explanation:

In this question, we have to simplify the expression.

Solve:

-2.6f + 0.2f - 16 - 5​

Combine like terms.

-2.6f + 0.2f - 16 - 5​

-2.4f - 16 - 5​

-2.4f - 21

Since we can't simplify further, -2.4f - 21 would be your answer.

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