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Vesnalui [34]
3 years ago
7

Which expression is equivalent to 12 x + 3 ( x − 2 )

Mathematics
1 answer:
Marina86 [1]3 years ago
3 0

Answer:

15x - 6

Step-by-step explanation:

To solve this, Given the expression 12 x + 3 ( x − 2 )

To simplify, expand

12 x + 3 * x −3 * 2

Knowing that

- * + = -

then the expression becomes

= 12 x + 3x - 6

= 15x - 6

The expression given is equivalent to 15x - 6

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The product of two positive integers is 176. One number is 5 more than the other. Find the smaller number.
svlad2 [7]

Hello from MrBillDoesMath!

Answer:

11



Discussion:

Let "n" be the smaller number. Then

n * (n+5) = 176.


My first reaction to this problem was to factor 176 in my head. That's  176 = 16 * 11 and 16 is 5 more than 11. So that's the solution!.... Now let's solve it using the brute force approach:

n(n+5) = 176                 =>

n^2 + 5n - 176 = 0       => use the quadratic formula


n =     ( -5 +\- sqrt( 5^2 - 4(1)(-176)) )  /2

 =     ( -5 +\- sqrt( 25 +  704) )/ 2

=     ( -5 +\- sqrt (729) ) /2                            => as sqrt(729) = 27

=      (-5 +\- 27) / 2                                        =>

=      (-5 + 27)/2 or ( -5 -27)/2                      =>

=      22/2  or  -32/2                                     =>

=      11 or  -16


But -16 is not allowed as the question wants a positive value.



Thank you,

MrB

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3 years ago
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Mrs. Miller deposited a check for $245.83 and a check for $418.72. She went to a non-company ATM and withdrew $80. She was charg
Natalka [10]

Answer: Your answer should be B

Step-by-step explanation: Give brainliest if it works!

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2 years ago
Find the percent decrease. Round to the nearest percent.
shutvik [7]

Answer:

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Step-by-step explanation:

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Simple math my tiny brain can’t understand PLEASE HELP
gogolik [260]

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-7 x (4+8) = ?? Please a aswer?
Colt1911 [192]
The answer would be -84.

Here are the steps I did.

1. Simplify 4 + 8 to 12 ( -7 * 12 )

2. Now lastly simplify and u get -84.
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3 years ago
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