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3 years ago

Mrs. Jones got a new freezer. She plugged it in, and it began to get cold. The

1 answer:

5 0

The rate of change for one hour is 4°.
When you look at the problem it says the temperature dropped 24° in 6 hours . So if you divided 24 by 6 you get 4 which is the rate at which the temperature dropped per hour.

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The sum of 5 and a number x

Naya [18.7K]

5+x that is the answer

3 0

3 years ago

Read 2 more answers

What is the value of x?<br> Enter your answer in the box.<br> x =

Svetllana [295]

Answer:

Step-by-step explanation:

The two triangles are similar and therefore we can set up a proportion

9/(9 + 72) = (3x - 20)/(3x - 20 + 56) Combine like terms on the right

9/(81) = (3x - 20)/(3x + 36) Cross multiply

9(3x + 36) = 81 (3x - 20) Remove the brackets.

27x + 324 +1620 = 243x Add 1620 to both sides

27x + 324 + 1620 = 243x Subtract 27x from both

1944 = 216x divide both sides by 216

x = 9

If you feel comfortable canceling the size of the numbers can be reduced.

9/81 = 1/9

1/9 = (3x - 20)/(3x + 36)

3x + 36 = 9(3x - 20)

3x + 36 = 27x - 180

36 + 180 = 24x

216 = 24x

216/24 = x

x = 9

There is another cancelation possible, but this is simple enough.

6 0

3 years ago

What is the twelfth term in the sequence 3, -6, 12,...?

soldi70 [24.7K]

Answer:

-24

Step-by-step explanation:

The geometric sequence as seen and given is multiplied by -2. If we continue and follow the sequence, then 3 times -2 equals -6 times -2 equals 12 times -2 equals -24. So, -24 would be the correct answer.

PLZ MARK BRAINLIEST!!!

3 0

3 years ago

Read 2 more answers

The length and the breadth of a rectangle are 40 m and 30 m respectively. If its perimeter = perimeter of a square. Find the sid

Lunna [17]

Answer:

above is the solution to the question

4 0

2 years ago

The board of directors of a corporation must select a president a secretary and a treasurer in how many possible ways can this b

Anika [276]

There are 9240 possible ways in which a president, a secretary and a treasurer can be selected from the 22 members on the board of directors.

<h3><u>Solution:</u></h3>

Give that the board of directors of a corporation must select a president a secretary and a treasurer.

Need to calculate in how many possible ways this can be accomplished if there are 22 members on the board of directors

Here we are assuming that one person can hold only one position means one if get selected for president he is out of the race for remaining positions that are secretary and treasure

Lets for sake of understanding, we simplify our question.

Lets say there are 3 members A , B and C . In how many ways two positions of Secretary and treasurer can be filled .

So for selecting secretary we have three option that are A , B or C.

And once secretary is selected , number of option for selecting treasure is two.

So it is found that number of selecting 2 positions for 3 members is product of option available for selecting first position that is secretary multiplied by option available for selecting second position that is treasurer = 3 x 2 = 6

So now applying same logic for selecting members for 3 positions from 22 menbers we get

For selecting president members available = 22

Once president is selected, then option available for selecting a Secretary = 21

And one secretary is also selected, then option available for selecting a treasure = 20

So number of ways in which three positions can be filled by 22 member = 22 x 21 x 20 = 9240

Hence there are 9240 possible ways in which a president , a secretary and a treasurer can be selected from the 22 members on the board of directors.

6 0

4 years ago