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miskamm [114]
3 years ago
11

Fill in the missing reasons (one for each step). Given: 3x – 6y = 27; x = 5 Prove: -2 = y

Mathematics
1 answer:
JulsSmile [24]3 years ago
5 0

Answer:

a. Given,

b. Substitution

c. Subtraction of equality

d. Division of equality

e. Symmetric property of equality

Step-by-step explanation:

Given expression,

3x - 6y = 27; x = 5

By substituting x = 5,

3(5) - 6y = 27

15 - 6y = 27

By subtraction property of equality,

-6y = 12

Division property of equality,

y = -2

By symmetric property of equality,

-2 = y

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I need help you don't have to explain the answer I just need it, thank you!
denpristay [2]

Answer:

j = 10

Step-by-step explanation:

You add 7 to both sides then divide both sides by -2

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3 years ago
The cuboid has volume 288cm^3 (a) the cuboid has a length 12 cm and a width 5cm Calculate the height of the cuboid (b) 1cm^3 of
klemol [59]

Answer:

height= 4.8cm

Step-by-step explanation:

volume= length×width× height given the volume and length and width, 288=12×5×h

288=60h

divide both sides by 60

h=4.8cm

7 0
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Read 2 more answers
Multiplying two digits<br>​
Vika [28.1K]

Answer:

Get a calculator

Step-by-step explanation:

Most of the time for simple math like multiplying 2 digits, it is easiest if you just get a calculator. It saves a lot of time.

If you can't get a calculator then i recommend memorizing some common equations.

For example 10*15= 150

so that if you get 12*15=?, you can easily just add two extra 15's to your answer of 150.

15+15 is 30, and 30+150(from 10*15)=180.

Therefore 12*15=180.

:) Hope that helped!

4 0
3 years ago
The sales force at a certain company successfully closed 96 out of 200 sales calls. What was their percent success rate?
Masja [62]

Answer:

48%

Step-by-step explanation:

In order to find the percentage, we'll have to divide the number of successful sales by the total number of sales.

\frac{96}{200} = 0.48

0.48 written as a percentage is 48%

3 0
3 years ago
A worker submits the following data on a timesheet: Week 1 — Total hours: 42 (including 4 hrs sick leave, 6 hrs travel) Week 2 —
Assoli18 [71]

Answer:

12.5%

Step-by-step explanation:

In order to find the percentage the worker spent traveling, we can make us of the following ratio:

\frac{number}{ammount}=\frac{percent}{100}

where number is how many hours he spent traveling, ammount is the total ammount of hours he reported and percent is the percentage we want to find. So we can solve the ratio for the percent, so we get:

percent=\frac{number}{ammount}*100%

now, we need to find the total amount of hours he spent traveling, this is gotten by adding the provided data:

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next we need to find the total amount of hours reported:

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so now we can substitute the data the problem provided us with:

percent=\frac{11}{88}*100%

which yields:

percent=12.5%

6 0
3 years ago
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