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BlackZzzverrR [31]
3 years ago
9

15x+12=45+4x whats x?

Mathematics
2 answers:
cupoosta [38]3 years ago
5 0
Like terms are when the variable you have are the same. In this case it is x. Therefore, when you have like terms, you should add, or subtract your like terms.
<span>
(note: When you move one thing to the other side of the equation, make sure to do the opposite of the sign. i.e. if it is +4 when you move to the other side it will be -4).

</span><span>15x+12=45+4x
</span>15x+12-12=45+4x-12
15x=<span>45+4x-12
15x-4x=45+4x-4x-12
15x-4x=45-12
11x = 33
this is the same as:
</span><span>11*x = 33
</span>the opposite of multiply is divide so when we move the 11 it has to be divide
11/11*x=33/11
x=3
saul85 [17]3 years ago
4 0

<span>15x+12=45+4x </span>⇒15x - 4x = 45 - 12 ⇒ 11x = 33 ⇒ x = 3


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You and two friends share 7 cookies equally. How many cookies do you each get?
Ivahew [28]
4 cookies because three divided by seven equals three hope I helped
5 0
3 years ago
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The value of a car reduces by 30% every 6 months. A car costs $15,000 when new. What is the value of the car after 2 years?
Allisa [31]
6 months goes into 2 years 4 times
30 x 4 = 120
120% of 15,000 is
100% is 1,500
10% is 150
150 x 2 = 300 (20%)
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hope this helped
3 0
3 years ago
All of the following are irrational except _____.
a_sh-v [17]

The number that is not irrational is 1.\overline{45}. The correct option is the second option 1.\overline{45}

<h3>Irrational numbers </h3>

From the question, we are to determine which of the given options is not irrational

Irrational numbers are the set of real numbers that cannot be expressed in the form of a fraction, p/q, where p and q are integers.

1.\overline{45}  is a repeating decimal and it can be expressed as a fraction

1.\overline{45} = \frac{144}{99}

∴ 1.\overline{45} is not an irrational number. It is a rational number

The other options cannot the expressed as a fraction.

Hence, the number that is not irrational is 1.\overline{45}. The correct option is the second option 1.\overline{45}

Learn more on Irrational numbers here: brainly.com/question/11919233

#SPJ1

5 0
2 years ago
5m + 3 ( 8m +7 ) +4^2<br><br> Can someone help me
Pie

Answer:

29m+37?

Step-by-step explanation:

<em>Pemdas</em>

5m+3(8m+7)+4^2

Parentheses first: 5m+24m+21+4^2

Exponents next: 5m+24m+21+16

No multiplication or division so addition is last:

29m+37

These two can't add together because one has a variable.

7 0
2 years ago
Select the correct answer.
charle [14.2K]

Answer: C

Step-by-step explanation:

4^{-11/3 -(-2/3)=4^{-11/3 + 2/3}=4^{-3}=1/64

5 0
2 years ago
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