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DiKsa [7]
3 years ago
15

I don’t understand how to do this 3a + 7 + 2(3 +a)

Mathematics
1 answer:
Dovator [93]3 years ago
6 0

Answer:

5a+13

Step-by-step explanation:

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There are40 yellow and blue in a bag.there are 4 times as many blue marble as yellow marbles. how many yellow marbles are there?
Elodia [21]
4 units = blue
1 unit = yellow

total: 5 units = 40

1 unit = 40 ÷ 5 = 8

yellow: 8
blue: 8×4 = 32
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3 years ago
Megan owes $26.00 for text messaging in the month of August. If her text messaging plan costs $9 for the first 650 messages and
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26-9=$17.00
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3 years ago
Certain pieces of antique furniture increased very rapidly in price in the 1970s and 1980s. For example, the value of a particul
OverLord2011 [107]

Based from the data within the given problem, the rate in dollars per year at which the price is increasing is 150*ln(1.65)*1.65^t. I am hoping that this answer has satisfied your query about this specific question, thank you and have a nice day.

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4 years ago
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The Webster family is planning a barbecue for one hundred people. The Webster family needs one plastic plate for each person at
Pachacha [2.7K]

The question is incomplete:

The Webster family is planning a barbecue for one hundred people. The Webster family needs one plastic plate for each person at the barbecue. The Stop and Shop store and Market Place Store both sell plastic plates in packages of fifteen for five dollars and ninety-nine cents per package. How many packages of plastic plates does the Webster family need to buy? What is the cost of plates for the barbecue?

Answer:

-The Webster family needs to buy 7 packages.

-The cost of the plates is $41.93.

Step-by-step explanation:

To calculate amount of packages that the Webster family need to buy, you have to divide the amount of people by the number of plates in each package:

100/15= 6.66

According to this, as they will need more than 6 packages, the Webster family needs to buy 7 packages to have one plastic plate for each person at the barbecue.

Then, the cost of the plates for the barbecue would be calculated by multiplying the price of each package for the number of packages needed:

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The cost of the plates is $41.93.

5 0
4 years ago
The U.S. RDA for protein for a girl is 46 g. If a piece of friedchicken contains 23 g, how many pieces would the girl have to ea
Nataliya [291]

The U.S RDA for protein is 46g for girl

If a piece of fried chicken contains 23g

To find the pieces of chicken she is to eat to satisfy the U.S RDA requirement,

The number of pieces of chicken is

\text{Number of pieces}=\frac{U.S.\text{ RDA g protein required for a girl}}{g\text{ of protein in a piece of chicken}}

The number of pieces of chicken is

\begin{gathered} \text{Number of pieces of chicken}=\frac{46}{23}=2\text{ pieces of chicken} \\ \text{Number of pieces of chicken}=2\text{ pieces of chicken} \end{gathered}

Hence, the right option is B

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2 years ago
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