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pshichka [43]
3 years ago
11

A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9. What is the original number? A.

-4 B. -30 C. 4 D. 30
Mathematics
2 answers:
rusak2 [61]3 years ago
5 0

Answer:

The answer is c

Step-by-step explanation:

You have to do everything backwards,

-9 divide it by 3 to get -3, then add seven to that answer

zhuklara [117]3 years ago
5 0

Answer:

C

Step-by-step explanation:

You can work backward to find out the answer!

Start with -9. Instead of multiplying by 3, you can divide.

-9/3 = -3

Now, instead of decreasing -3 by 7, increase by 7.

-3+7 = 4

You get 4, which is C!

Hope this helps!

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Find the solution to the equations. 2x - y = -3 x y = 0 (0, 0) (-1, 1) (1, -1)
rosijanka [135]
(2x-y = -3 × y = 0 × (0, 0) × ( -1, 1) × (1, -1) = (2x - y = -3 × y =0 × (0)) ×, × 0 ×, × 1 ×, × -1
4 0
3 years ago
Mariam and Sana are excited that a new store just opened in town! They go together the first day it opens! Each time Mariam goes
Vadim26 [7]

Answer:

Mariam went to the store 5 times, while Sana went 3 times.

Step-by-step explanation:

Since Mariam and Sana are excited that a new store just opened in town, and they go together the first day it opens, and each time Mariam goes to the store she plans to spend Rs. 30, and each time Sana goes to the store she plans to spend Rs. 50, and a few weeks from now, Mariam and Sana are surprised to find out that they have spent the exact same total amount of money at the store, to determine what is the least possible number of times that Mariam has been to the store the following mathematical reasoning has to be done:

To know how many times Mariam went and how many times Sana went to the store, since she spends Rs. 30 and the other Rs. 50, and they have spent the same after a few weeks, it is through the search for the lower common multiple of both numbers.

Thus, the common multiple less than 30 and 50 is 150 (30 x 5 or 50 x 3). Therefore, Mariam went to the store 5 times, while Sana went 3 times.

8 0
2 years ago
17. What is 43 in expanded form?
masha68 [24]

Answer:

None of those that you listed are correct.

Step-by-step explanation:

All of the selections you've shown do not equal to 43. Sorry. :(

3 0
3 years ago
Read 2 more answers
Help meeeeeeeeeeee<br> pls
PtichkaEL [24]

Answer:

with what lol?

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Students receive a 15% discount at the local movie theater. If a student pays the discounted price of $7.65, what is the origina
Over [174]

Answer:

\large \boxed{\$9.00}

Step-by-step explanation:

Let p = the original price of the ticket

\begin{array}{rcl}\text{ Price before discount - discount} & = & \text{sale price}\\p - 0.15p & = & 7.65\\0.85p & = & 7.65\\p & = & \dfrac{7.65 }{0.85}\\\\& = & \mathbf{9.00}\\\end{array}\\\text{The original price of the ticket was $\large \boxed{\mathbf{\$9.00}}$}

Check:

\begin{array}{rcl}9.00 - 0.15(9.00) & = & 7.65\\9.00 - 1.35 & = & 7.65\\7.65 & = & 7.65\\\end{array}

OK.

7 0
3 years ago
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