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3 years ago

Course challenge

Mathematics

1 answer:

Paladinen [302]3 years ago

3 0

Answer:

4x+1

Step-by-step explanation:

sum= addition

one=1

and= plus

product of four and a number: when we say a number we usually use the variable x. 4(x)= 4x

put together: 4x+1 (no equal sign needed)

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Fine the following when a=-2, b=4, c=7<br> 7b-12 over 2ac

iren [92.7K]

Hello!

You have to put the numbers in for the variables in the equation

$\frac{7b - 12}{2ac}$

Put the numbers in

$\frac{7(4) - 12}{4(-2)(7)}$

Combine like terms

$\frac{28 - 12}{-56}$

$\frac{16}{-56}$

The is is $\frac{16}{-56}$ or about -0.29

Hope this help!

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3 years ago

Which is longer: 180 sec or 3 mins? Explain how you decided.

weeeeeb [17]

None of them is long because 3 minutes have 180 seconds they both are equal . you will be wondering how i know it same well one minute have 60 seconds so 60+60+60 = 180 secs

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3 years ago

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X+7=6x-3 brainliest for best answer

sergejj [24]

Answer:

x =2

Step-by-step explanation:

x + 7 = 6x - 3

7 + 3 = 6x - x

10 = 5x

x = 10 ÷ 5

x = 2

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3 years ago

PLEASE HELP ME WITH THIS FAST PLEASE!!! I even gave you something to help, and you’ll receive 100points

erastovalidia [21]

Answer:

Why did you add so many? 2,4, 5, 2 , 5, 5, 7, 8, 9, 1, 3, 5, 6, 2, 7,

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3 years ago

Which inequality is true when X = -8?

alexgriva [62]

Answer:

<u>2</u>

Remember:

+ and - = -

- and + = -

- and - = +

+ and + = +

1. -4 +(-8) > 20

-4 - 8 > 20

-12 > 20? Incorrect

2. -7 - 4(-8) < 27

-7 + 32 < 27

25 < 27? Correct

3. 8 + 3(-8) > -10

8 - 24 > -10

-16 > -10? Incorrect

4. 5 - 2(-8) < 15

5 + 16 < 15

21 < 15?, Incorrect

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3 years ago