3 years ago

What expression shows the distance on the number line between −12 and −1 ? Thxxs! ^^

1 answer:

4 0

-12 and -1 are 11 units apart.
-12-(-1) = -11
The absolute value which is just the number of units is 11.
Hope this helps you

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Solve the equation. x2 18x 81 = 25 a. 14, 4 b. –4, –14 c. 14, –14 d. –4, 4

Snowcat [4.5K]

Answer:

The answer is the option B

$-4,-14$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}+18x+81=25$

$x^{2}+18x+56=0$

$a=1\\b=18\\c=56$

substitute in the formula

$x=\frac{-18(+/-)\sqrt{18^{2}-4(1)(56)}} {2(1)}$

$x=\frac{-18(+/-)\sqrt{100}} {2}$

$x=\frac{-18(+/-)10} {2}$

$x1=\frac{-18+10} {2}=-4$

$x2=\frac{-18-10} {2}=-14$

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prohojiy [21]

If 3 is the bold number then the answer is D. #TeamAlvaxic

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3 years ago

5,-15,35,55.... What is the common difference

harkovskaia [24]

Answer:

The common difference is -20

Step-by-step explanation:

Simply subtract 5 from -15

-15-5 = -20

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What is the answer to f(x)=2x^2-14?

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3 years ago

Express your answer in scientific notation. 4.9 x 10^4 - 8200

Fiesta28 [93]

Answer:

4.0800*10^4

Step-by-step explanation:

4.9*10^4=49000

49000-8200=40800

since we can only have base numbers 1-9 in scientific notation, we need to move the decimal left 4 places:

4.0800*10^4

Hope this helps!

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3 years ago