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rjkz [21]
3 years ago
6

Help 7TH GRADE math I give out good rating and BRAINIEST!

Mathematics
2 answers:
Digiron [165]3 years ago
8 0

Answer:

12.6

Step-by-step explanation:

If 21 divided by 5 is 4.2, you should multiply 3 by 4.2 you'll then get 12.6. to double check, do 5 divided by 3, which is 1.67, and 21 divided by 12.6 is also 1.67. so side OP is 12.6! :)

shepuryov [24]3 years ago
6 0

Answer:

i don't know sorrryyy

Step-by-step explanation:

im very sorry because im sor busy

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15-3a =??<br> please help
scoundrel [369]

Answer:

a=5

Step-by-step explanation:

3 0
3 years ago
Subtract-3x - 8 from 4x² - 7x - 2.
allsm [11]

( {4x}^{2}  - 7x - 2) - (3x - 8) \\  \\  {4x}^{2}  - 7x - 2 - 3x + 8 \\  \\  {4x}^{2}  - 10x + 4.

3 0
2 years ago
1) Last Tuesday, Regal Cinemas sold a total of 85 movie tickets. Ticket sales totaled
irakobra [83]

In this question, some of the data is missing so its a complete question and the solution can be defined as follows:

\bold{\text{m = matinee tickets}} \\\\\bold{\text{s = student tickets}}\\\\\bold{\text{r = regular tickets}}

By given question, calculating equations are:

\to \bold{m + s + r = 8500}............................................(a)\\\\\to \bold{5m + 6s + 8.50r = 64600}............................(b)\\\\\to \bold{s = 2m}...................(c)

Putting the equation (c) value in the equation (a) to calculate value:

m + 2m + r = 8500\\\\3m + r = 8500\\\\r = 8500 - 3m........................................(d)

Putting equation (c) and (d) value into equation (b):

5m + 6(2m) + 8.50(8500 - 3m) = 64600\\\\5m + 12m + 72250 - 25.50m = 64600\\\\-8.50m = 64600 - 72250 \\\\-8.50m = -7650\\\\m = \frac{-7650}{-8.50}\\\\m = \frac{7650}{8.50}\\\\m = 900

Putting m value into equation (c) and equation (d) to calculate its value:

Calculating the s value:

\to s = 2(900) \\\\ \to s = 1800

Calculating the r value:

\to r = 8500 - 3(900) \\\\\to r = 8500 - 2700\\\\\to r = 5800\\\\

So, the final value of "m, s, and r" are "900, 1800, and 5800".

Learn more:

brainly.com/question/2929577

7 0
3 years ago
A recipe requires 5 cups of sugar you can only measures using 3/4 cups how many 3/4 cups are needed for the recipe leave the ans
Firdavs [7]

Answer:

Step-by-step explanation:

5 / (3/4) =

5 * 4/3 =

20/3 <==== I left it as an improper fraction

6 0
3 years ago
-6x - 17 ≥ 8x 25 what is the solution of the inequality
Angelina_Jolie [31]
The answer is
x \leq -3
6 0
3 years ago
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