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Ulleksa [173]
3 years ago
12

Rewrite in simplest terms: 4 (d+9) -8 (-3d-3)

Mathematics
1 answer:
asambeis [7]3 years ago
8 0

Answer:

28d + 60

Step-by-step explanation:

4d + 36 + 24d + 24

28d + 60

First I used distributive property to expand. Then I rewrote my answer into simplest form possible. As we know that two negatives equal postive which is what I did to get the correct answer.

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Marguerite is building a box from strips of wood.she needs 78 pieces of wood that are each 29 centimeters long.the wood comes in
dolphi86 [110]
Each strip is 29 cm

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Change the m to cm
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6 m = 600 cm

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Find the number of strips for 1 6m-board
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Find the number of strips that can be cut from the 6m board.

600 ÷ 29 = 20 pieces remainder 20cm

So we can only cut 20 pieces of 29 strips from one 6m board.

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Find number of boards needed 
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70 ÷ 20 = 3.5 

We need 3.5 of the 6m boards.

Since she can't have half a board, she has to buy 4 pieces of the board.

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Answer: 4 pieces of the 6m board.
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7 0
3 years ago
Checking account A charged a monthly fee of $5 and a per-check fee of $0.25, and checking account B charged a monthly fee of $6
Genrish500 [490]
First we need to know both the formula of A and B.

The formula of A is
C = 5 + 0.25p
with C representing total cost and p representing the amount of checks.

The formula of B is
C = 6 + 0.15p
with C representing total cost and p representing the amount of checks.

To find the point where A and B cost the same, we solve the following equation:
5 + 0.25p = 6 + 0.15p

Collecting terms gives us
-1 = -0.1p

Now we have to divide by -0.1 and we get.
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So our answer: after 10 checks both accounts cost the same amount of money. Answer A.
7 0
3 years ago
What is a counter example in following sentence:
koban [17]

(1/2) ^2 = 1/2 * 1/2 = 1/4

1/4 < 1/2

4 0
3 years ago
Read 2 more answers
Mr. Clark claims that he has a coin that is weighted so that the probability of heads is 40%. To test this, his students flip th
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Answer:

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3. This means that the theoretical probability of tails is most likely 0.6 for this coin.

( I also had this question before)

8 0
2 years ago
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Eddi Din [679]
1. An Irrational Number is a real number that cannot be written as a simple fraction. Irrational means not Rational. - Google
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2. 4.8
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3a.) √40 = 6.3
3b.) 2.6 because ∛8 equals 2
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4. 9
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5. ∛512 = 8
3 0
3 years ago
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