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3 years ago

Simplify the expression 15-8(3x-7)+x

Mathematics

1 answer:

Hoochie [10]3 years ago

7 0

Simplified: -23x+71

15-8(3x-7)+x
distribute
15-24x+56+x
combine like terms
-23x + 71

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Which decimal number best describes the fraction 77/6

german

Answer:

Step-by-step explanation:

I looked it up on the calculator.

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3 years ago

You need 3 sticks of butter for every 24 cookies you bake. How many sticks of butter for 16 cookies

Kay [80]

Answer: 2 sticks.

Step-by-step explanation:

Given statement: You need 3 sticks of butter for every 24 cookies you bake.

Using unitary method , the number of sticks of butter used to bake 1 cookie= $\dfrac{3}{24}=\dfrac{1}{8}$

Then the number of sticks of butter used to bake 1 cookie= $\dfrac{1}{8}\times16=2$

Hence, the number of sticks of butter used to bake 16 cookies= 2

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4 years ago

Read 2 more answers

Please help ASAP!!!!!!

erica [24]

Answer:

300

Step-by-step explanation:

20*30=600

600/2=300

Please mark as Brainliest! :)

Have a nice day.

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4 years ago

Q =3x2+5x-2 R = 2 – x2 S = 2x + 5 Find Q – [R + S] Show all of the steps.

matrenka [14]

$Q=3x^2+5x-2\\R=2-x^2\\S=2x+5\\\\Q-[R+S]=(3x^2+5x-2)-[(2-x^2)+(2x+5)]\\\\=(3x^2+5x-2)-(2-x^2+2x+5)\\\\=(3x^2+5x-2)-[-x^2+2x+(2+5)]\\\\=(3x^2+5x-2)-(-x^2+2x+7)\\\\=3x^2+5x-2-(-x^2)-2x-7\\\\=3x^2+5x-2+x^2-2x-7\\\\=(3x^2+x^2)+(5x-2x)+(-2-7)\\\\=\boxed{4x^2+3x-9}$

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3 years ago

A thief steals an ATM card and must randomly guess the correct five-digit pin code from an 8 key keypad repetition of digits is

Rus_ich [418]

Answer:

1/32768

Step-by-step explanation:

We have 5 digit pin code plots and 8 choices per slot. Because repetition is allowed (1 digit can have 8 choices) so we multiply out the number of choices per slot . Hence:

8*8*8*8*8 = $8^{5} = 32768$

So there are 32768 different combination.

But correct guess on the first try is just only 1 time, so its' probability:

1/32768

7 0

3 years ago