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Pavel [41]
3 years ago
8

Which description is paired with its correct expression?

Mathematics
1 answer:
a_sh-v [17]3 years ago
7 0

Answer:

D.

Step-by-step explanation:

Hi there! You’re correct.

Twice the difference of nine and a number squared would look like

2(9-n^2)

I hope this helped! :)

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A number x increased by 17 is 106
Lorico [155]

Answer:

x = 89

Step-by-step explanation:

106 - 17 = 89

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Which technique is most appropriate to use to solve each equation? Drag the name of the technique into the box to match each equ
faltersainse [42]
(x + 3) (x + 2) = 0
 To solve it, the most appropriate technique is:
 1.) zero product property
 The solutions are:
 (x + 3) = 0
 x = -3
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 x = -2
 
 x² + 6 = 31
 
To solve it, the most appropriate technique is:
 2.) square root property
 x² = 31-6
 x² = 25
 x = +/- root (25)
 x = +/- 5
 The solutions are:
 x = 5
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5 0
3 years ago
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9 kg of washing powder cost $10.80. What is the cost of 1 kg of washing powder?
Andrei [34K]

Answer:

cost of 1 kg of washing powder is $1.2

Step-by-step explanation:

9 kg = $10.80

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

cost for 1 kg =

  • 10.80 ÷ 9
  • $1.2

7 0
2 years ago
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What is the measure of angle 2
vodka [1.7K]

Answer:142º

Step-by-step explanation:

Because they are vertical angles.

6 0
2 years ago
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The sum of twice a number and 7 is -19
adoni [48]

Answer:

The number will be -13

Step-by-step explanation:

Let the no. be x

Its twice will be = 2x

According to the question ,

2x + 7 = -19\\=> 2x = -19 - 7 = -26\\=> x = \frac{- 26}{2} = - 13

4 0
3 years ago
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