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3 years ago

X^2=4 square root property

Mathematics

1 answer:

Olin [163]3 years ago

7 0

${x}^{2} = 4 \\ x = \sqrt{4} \\ x = 2$

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36 litres of oil fill 4 indentical cans. How many does each hold?

My name is Ann [436]

So 36 fill 4 identical cans
36 divided into 4 parts
36/4=18/2=9/1=9
answer is each can holds 9 liters of oil

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4 years ago

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

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3 years ago

What is the circumference of the following circle?<br> 3 cm

Serjik [45]

Answer:

the circumference is 9.42 cm

Step-by-step explanation:

3.14 · (3 cm)

c = 9.42 cm

hope this helps :-)

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14. The range of the data 6, 8, 16, 22, 8, 20, 7, 25 is __________.

maks197457 [2]

Answer:

The range of the data is 19.

Step-by-step explanation:

To solve this problem, we must remember that to calculate the range, we subtract the smallest data point in the set from the largest data point. In this case, the largest number is 25 and the smallest number is 6.

Therefore the range is:

25 - 6

= 19

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4 years ago

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Solve the division problem round answer to nearest hundredth 9.2/52.063

Svetach [21]

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3 years ago

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