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3 years ago

7

What number is 100 times greater than 20?

2 answers:

elena-14-01-66 [18.8K]3 years ago

6 0

Answer:

2000

Step-by-step explanation:

just muliply

Rudiy273 years ago

6 0

2000 is the correct answer

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Which of the following is an extraneous solution of the square root of -3x-2=x+2

yarga [219]

Answer:

x=-6 is an extraneous solution

Step-by-step explanation:

we have

$\sqrt{-3x-2} =x+2$

squared both sides

$-3x-2=(x+2)^2$

$-3x-2=x^2+4x+4$

$x^2+7x+6=0$

solve the quadratic equation by graphing

The solution is x=-6 and x=-1

see the attached figure

<u><em>Verify each solution</em></u>

substitute the value of x in the original expression

For x=-6

$\sqrt{-3(-6)-2} =-6+2$

$\sqrt{16} =-4$

$4=-4$ ----> is not true

so

Is an extraneous solution

For x=-1

$\sqrt{-3(-1)-2} =-1+2$

$\sqrt{1} =1$

$1=1$ ----> is true

so

Is the solution

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3 years ago

A. Are the expressions 3(m - 2) + 2(m - 2) and 54m - 2) equivalent expressions?

kolbaska11 [484]

Answer:

A. 3(m-2) + 2(m-2) = 3m - 6 + 2m - 4

= 3m + 2m - 6 - 4

= 5m - 10

your welcome

Step-by-step explanation:

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3 years ago

40 is what percent of 32?<br><br> ?=p/100<br> p=?

Fofino [41]

Answer:

125℅

Step-by-step explanation:

40/32 x 100℅=125℅

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Step-by-step explanation:

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Step-by-step explanation:

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