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BigorU [14]
3 years ago
15

What are the solution of the equation 2|×+7|-3=5​

Mathematics
2 answers:
goblinko [34]3 years ago
5 0

Answer:

Solution of the equation 2|x +7|-3=5 is :

<u>x1 = - 11 </u>and<u> x2 = - 3</u>

AURORKA [14]3 years ago
3 0

Answer:

  x = -3 and x = -11

Step-by-step explanation:

Find the "bare" absolute value function, then solve the two resulting equations.

  2|x+7| -3 = 5

  2|x +7| = 8 . . . . . add 3

  |x +7| = 4 . . . . . . divide by 2

This resolves to two equations:

  x +7 = 4

  x = -3 . . . . . subtract 7

and

  x +7 = -4

  x = -11 . . . . . subtract 7

The two solutions are ...

  x = -3 and x = -11

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1
Lena [83]

Answer:

7.5kg

Step-by-step explanation:

Given that:

Monday:

Mass of sand = 24 kg

Mass of cement = 5 kg

Tuesday :

Mass of sand = 36 kg

Let mass of cement = c

Mass of cement required to make the same type of mortar mix

Mass of Sand = mass of cement

24kg = 5kg

36kg = c

By cross multiplication :

24 * c = 5 * 36

24c = 180

Divide both sides by 24

c = 180 / 24

c = 7.5 kg

Hence mass of cement required is 7.5 kg

4 0
2 years ago
G(x)= -3x(x-8), find g(-4)
Mashcka [7]

Answer:

g(-4)=144

Step-by-step explanation:

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3 0
2 years ago
Isabella has twice as much money invested at 4% as she has invested at 3%, and she has $500 more invested at 5% than she has at
adell [148]
Invested at 3% = x
invested at 4% = 2x
invested at 5% = x+500

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0.16x = 2000
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3 0
2 years ago
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Basile [38]

Answer:

It will have 16 times more coverage than cell tower A.

4 0
3 years ago
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