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zhannawk [14.2K]
3 years ago
15

When 54 is added to a number the result is the same as when the number is multiplied by 3. What is the number? Show working out.

Mathematics
2 answers:
egoroff_w [7]3 years ago
6 0
54 + x = x(3)
54 + x = 3x
2x = 54
x = 27
Simora [160]3 years ago
5 0
The number is 18.
54 divides by 3 is 18.
18 plus 54 is 72
18 Times 3 is 72
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A system of equations is given below. y=1/2x-3 and -1/2x-3. Which of the following statements best describes the two lines?
pantera1 [17]

"They have different slopes but the same y-intercept, so they have one solution" is the statement which best describes the two lines.

Answer: Option D

<u>Step-by-step explanation:</u>

Given equations:

           y=\left(\frac{1}{2} \times x\right)-3

           y=\left(-\frac{1}{2} \times x\right)-3

As we know that the slope intercept form of a line is  

                             y = m x + c  

So, from equation 1 and equation 2 we can see that

              m_{1}=\frac{1}{2} \quad \text { and } c_{1}=-3

              m_{2}=-\frac{1}{2} \text { and } c_{2}=-3

So, from the above expressions, we can say that both lines have different slopes but have same y – intercept with one common solution when x = 0.

4 0
3 years ago
Read 2 more answers
EXPLANATION?????
crimeas [40]

Answer:

Hello! answer: x = 19

Step-by-step explanation:

This is a supplementary angle! So it will add up to 180 degrees 180 - 123 = 57 so we know something multiplied by 3 will equal 57 and 19 × 3 = 57 so x = 19 Hope this is a good explanation!

4 0
3 years ago
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If 3X + 2 equals 11, could X equal 5
Norma-Jean [14]

Answer:

No because 3(5) +2= 17

3*5=15

15+2= 17

Step-by-step explanation:

4 0
3 years ago
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What is the equation -5=q+2
slamgirl [31]

Answer: -7 = q

Step-by-step explanation:

3 0
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marta [7]

Answer: 6x*9

Step-by-step explanation:

open parathesises to

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hope i did this right and it helps :)

8 0
3 years ago
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