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olya-2409 [2.1K]
3 years ago
12

Mary is solving the equation: 3(x + 4)= 7x - 20. The first thing she does is rewrite the equation shown below. Which property di

d Mary use to get from the original equation to her rewritten equation? 3x + 12= 7x - 20. Please explain your answer to the question and start operations used to describe the property choice.

Mathematics
1 answer:
Greeley [361]3 years ago
3 0

Answer:

3(x + 4) = 7x - 20

3x + 12 = 7x - 20

x = 8

36 = 36

Step-by-step explanation:

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Need help fast will give brainiest
fiasKO [112]

Answer:

The room is 41 square meters.

Step-by-step explanation:

The square at the very top is 16 meters because 4 * 4 is 16.

The rectangle at the bottom is 6 meters because 2 *3 is 6

And that leaves you with the rest which is

11 -4 = 7

8 + 4 is 12

then you add them two together and you get 19 meters.

the last part is adding everything up which is 16 + 6 + 19= 41

the room is 41 square meters

7 0
3 years ago
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What is the expression and value of "six less than the quotient of a number and two, increased by ten" when n = 20?
fredd [130]

Answer:

The value is 14

Step-by-step explanation:

six less than (next quotient -6) the quotient of a number and two (n/2), increased by ten (+10) when n = 20.

(<u>n</u>/2)+10-6; <u>n=20</u>

<em>Substitute 20 in for n.</em>

(<u>20/2</u>)+<u>10-6</u>

<em>Divide and subtract.</em>

<u>10+4</u>

<em>Add.</em>

14

5 0
3 years ago
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The equation 2/5d-1=3/5d-3 represents the number of dimes
ollegr [7]

Answer:

d=10

Step-by-step explanation: step 1: 2/5d-1 = 3/5d-3           add 3 to both sides

                                                                   +3          +3

                                            step 2:  2/5d+2 = 3/5d subtract 2/5d to both sides

                                                         -2/5d       -2/5d

                                            step 3:         2 =  1/5d       multiply 5/1 to both sides

                                                              * 5/1 = *5/1

                                                                10 = d

                                                 

8 0
3 years ago
Margie says the set of numbers, 0. 1, -1, -21 4 , 3, are in order from least to greatest. What is her error? She did not use the
forsale [732]

One of the errors made by Margie by saying the set of numbers 0, 1, -1, -21, 4, 3 is that the -21 should be the first number on the list.

The given set of numbers is:

0, 1, -1, -21, 4, 3.

Margie says that the set of numbers above is in order from least to greatest

Kindly note that:

The negative number with the highest magnitude is the lowest

The positive number with the highest magnitude is the highest

Arranging this number by carefully following the note above, the set of numbers above from the least to greatest is:

-21, -1, 0, 1, 3, 4

It is obvious that Margie made a mistake in arranging the numbers, and one of the mistake is that the -21 should be the first number on the list since it is the most negative

Learn more here: brainly.com/question/25874786

6 0
2 years ago
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What is the key feature of simple interest?
mylen [45]

Answer:

When you make a payment on a simple interest loan, the payment first goes toward that month's interest, and the remainder goes toward the principal. Each month's interest is paid in full so it never accrues.

Step-by-step explanation:

4 0
3 years ago
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