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wlad13 [49]
3 years ago
14

-12 + ( ) = 9 whats the missing number

Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
7 0

Answer:

The missing number is 21

Step-by-step explanation:

-12 + x = 9

x = 9 + 12

x = 21

erastovalidia [21]3 years ago
3 0

Answer:

21

Step-by-step explanation:

let X = ( )

-12 + X = 9

X = 9 + 12

X = 21

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vlada-n [284]
The answer is 10 because its in the tens place
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A survey of 500 likely voters showed that 385 felt that the economy was the most important national issue. Find a point estimate
Dovator [93]

Answer:

Option B

Step-by-step explanation:

Given that a survey of 500 likely voters showed that 385 felt that the economy was the most important national issue.

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4 0
3 years ago
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3 0
3 years ago
Are this two triangles similar?
Alex73 [517]
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======================================================

Explanation:

Focus on triangle ABC. Let's find the missing angle

A+B+C = 180

113+B+22 = 180

B+135 = 180

B = 180-135

B = 45

Between the triangles, have two pairs of angles that are congruent

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B = E = 45

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The order of the letters is important so we know how the angles pair up. The first letters pair up together, the second letters pair up, and so on.

Consequently, this means sides BC and EF pair up and AC and DF pair up

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BC/EF = AC/DF

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18*4 = 12*x

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5 0
3 years ago
What number to the power of 3 equals 27 over 729
Olin [163]

Answer:

x=  1/3 =0.333

Step-by-step explanation:

6 0
3 years ago
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