2 years ago

Write the expression: twice a number increased by seven

Mathematics

1 answer:

marin [14]2 years ago

5 0

Answer:

x2+7

Step-by-step explanation:

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Solve systems by substitution method x + y = 12 3x - y = 20

labwork [276]

Step-by-step explanation:

x+y=12

3×+y=20

×=12-y

3 (12-y)+y=20

36-3y+y=20

36-4y=20

-4y=20-36

-4y= -16

y =16÷4

y=4

×+y=12

×+4=12

×=12-4

×=8

therefoer;y=4,x=8

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2 years ago

Find the highest common factor

kotegsom [21]

Answer:

Step-by-step explanation:

because both terms are common 12 and 6 is 3 and x² and x is x

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1 year ago

What is the slope of the line that contains these points? х 5 6 7 8 y -3 -1 1 3

RideAnS [48]

It will be y -3 in general

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2 years ago

What percent of 12 is 9? A. 25% B. 67% C. 75% D. 108% E. 133%

Sergeu [11.5K]

Answer:

75%

Step-by-step explanation:

75% = 3/4

3/4 * 12 = 9

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2 years ago

SImplify to standard form (a+bi) (12-9i)²

olga2289 [7]

Answer:

Hello,

Step-by-step explanation:

Formula used (a+b)^2=a²+2ab+b²

$(12-9i)^2=3^2*(4-3i)^2\\\\=9*(16-9-24i)\\\\=9*(7-24i)\\\\=63-216i\\$

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2 years ago