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Marat540 [252]
2 years ago
9

I subtract 3 from a certain number, multiply the result by 5 and then add 9 if the final result is 54. find the original number

Mathematics
1 answer:
Sergeu [11.5K]2 years ago
8 0

(x-3)\cdot 5+9=54\\5x-15=45\\5x=60\\x=12

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If
Nikolay [14]

Answer:

46

Step-by-step explanation:

4 x 2= 8

3 x 5= 15

2(8 +15)= 2(23)=

23 x 2= 46

8 0
3 years ago
Read 2 more answers
x + 3y = 7 x - 3y = 1 Solve the system of equations. A) x = 4, y = 1 B) x = 1, y = 4 C) x = - 2 3 , y = 3 D) x = 3, y = - 2 3
Alik [6]
X+3y=7
x-3y=1
add them together

x+3y=7
<u>x-3y=1 +
</u>2x+0y=8

2x=8
divide 2
x=4
subsitute
x+3y=7
4+3y=7
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6 0
3 years ago
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2. IQS = 4 and QR is a perpendicular bisector of TS , determined which of the following claims is true
Pavel [41]

Answer:

RS=5 TRUE

RS=4 FALSE (it’s 5)

ST=10 FALSE (it’s 8)

QR=4 FALSE (its 3)

Step-by-step explanation:

First, we have to determine the sides of the triangle.

4x-3=2x+1

4x-2x=1+3

2x=4

x=2

SO, RS=4x-3=4(2)-3=8-3=5

RT=2(x)+1=2(2)+1=5

QR=4²+b²=5².    16+b²=25.    b²=25-16.    b²=9.     b=3

CLAIMS:

RS=5 TRUE

RS=4 FALSE (it’s 5)

ST=10 FALSE (it’s 8)

QR=4 FALSE (its 3)

3 0
3 years ago
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Andrews [41]
Me being a junior in high school and not knowing middle school math
8 0
3 years ago
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What is the absolute value of the difference in the x-values between (1,7) and (3,11)​
Marysya12 [62]

Answer:

2.

Step-by-step explanation:

The first numbers in the ordered pairs are the x values;

Difference = 1 - 3 = -1

The absolute value is 2.

7 0
3 years ago
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