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Vanyuwa [196]
3 years ago
9

Solve step by step. 7x+4(4x-14)=59

Mathematics
1 answer:
ziro4ka [17]3 years ago
4 0

Answer:

x = 5

Step-by-step explanation:

7x+16x-56=59

23x -56 = 5 9

2 3 x - 5 6 + 5 6 = 5 9 + 5 6

23x=115

\frac{23x}{23} = \frac{115}{23}

x = 5

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2 cancels out.
x = 9/2 = 4.5

3 0
3 years ago
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Leviafan [203]
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zhuklara [117]
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7 0
2 years ago
what is the best approximation of the solution to the system to the nearest valus 2x-3y=-6 and x+2y=8
Trava [24]
Given:
2x - 3y = -6  ⇒ identified as 1st equation
x + 2y = 8    ⇒ identified as 2nd equation

Let us first get the value of x using the 2nd equation.
x + 2y = 8
x = 8 - 2y

Substitute x in the 1st equation with its value and find the value of y.
2x - 3y = -6
2(8-2y) - 3y = -6
16 - 4y -3y = -6
-4y - 3y = -6 -16
-7y = - 22
y = -22/-7
y = 22/7 simplified to 3 1/7

Substitute the value of y in the 2nd equation.
x = 8 - 2y
x = 8 - 2(22/7)
x = 8 - 44/7
x = (8 * 7/7) - 44/7
x = 56/7 - 44/7
x = (56-44)/7
x = 12/7 simplified to 1 5/7

To check:  x = 12/7 and y = 22/7  *we need to use the improper fractions.
2x - 3y = -6
2(12/7) - 3(22/7) = -6
24/7 - 66/7 = -6
(24-66)/7 = -6
-42/7 = -6
-6 = -6

x + 2y = 8
12/7 + 2(22/7) = 8
12/7 + 44/7 = 8
(12+44)/7 = 8
56/7 = 8
8 = 8

8 0
3 years ago
The area of an rectangle is 750 square centimeters. If the base is 50 centimeters, what is the height? Remember - the formula to
elena-14-01-66 [18.8K]

Answer:

The answer is C. or 15 cm

Step-by-step explanation:

50 cm x 15 cm= 750 cm

Multiply 50 centimeters by 15 centimeters to get 750 centimeters

6 0
3 years ago
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