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3 years ago

Which of the following is the same as 2.3 x 10^3? a) .23 b) 230 c) .023 d) 2,300

Mathematics

2 answers:

3241004551 [841]3 years ago

7 0

The answer is D you move the decimal over 1 then add 2 0

Cerrena [4.2K]3 years ago

3 0

Answer:

Step-by-step explanation:

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The equation y^2+8y−x+18=0 represents a parabola. Drag and drop the expressions into the boxes in the equation to rewrite the eq

mario62 [17]

Answer:

The equation of parabola is standard form is $x=\left(y+4\right)^2+2$

Step-by-step explanation:

Given equation of parabola is,

$y^2+8y-x+18=0$

In order to find the equation of parabola in standard form, eliminate x from left side of equation and use completing square method to find the equation.

First step is to add x on both side of equation.

$y^2+8y-x+18+x=0+x$

$y^2+8y+18=x$

Rewriting,

$x=y^2+8y+18$

Now applying completing square method as follows.

Following are the steps for calculation of this method.

Find the last term of above equation by using below formula,

$Last\:term\:of\:square=\left(\dfrac{coefficient\:of\:y}{2}\right)^{2}$

Now coefficient of y is 8.

$\therefore Last\:term\:of\:square=\left(\dfrac{8}{2}\right)^{2}$

Simplifying,

$Last\:term\:of\:square=\left(4\right)^{2}$

$Last\:term\:of\:square=16$

Second step is to add and subtract the last term.

$x=y^2+8y+18+16-16$

Rewriting,

$x=y^2+8y+16+18-16$

Since $\left(a+b\right)^{2}=a^{2}+2ab+b^{2}$

Using above formula,

$x=\left(y+4\right)^{2}+2$

Therefore, the equation of parabola in standard form is $x=\left(y+4\right)^{2}+2$

4 0

2 years ago

PLEASE HELP !! due today !!

Svetach [21]

Answer:

Since both sides, terms are perfect squares, factor using the difference of square formula,

$a^{2} -b^{2} =(a+b)(a-b)$ where a=3x and b=4.

(3x+4) (3x-4)

Hope this helps!

6 0

2 years ago

Which of the following is the solution to the compound inequality below?

Aneli [31]

Answer:

The answer of the question is b

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2 years ago

Which sign makes this number sentence true? |78| __ |-222|

sineoko [7]

The absolute value of 78 is < the absolute value of -222

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2 years ago

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Slove the equation -3x+1+10x=x+4

arlik [135]

Answer:

Step-by-step explanation:

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2 years ago

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