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2 years ago

13

Solve x−8>−4. 20 points and maybe a brainliest

1 answer:

Dima020 [189]2 years ago

4 0

Answer:

X = 12

Step-by-step explanation:

Just add 8 to both sides to set the equation balanced. I hope this helps :)

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6root27+root243 simplify

leonid [27]

Answer:

6√27 + √243

6√9 x 3 + √81 x 3

6 x 3 √3 + 9√3

18√3 + 9√3

27√3

5 0

1 year ago

Describe how to use mental math to determine if a ratio is simplified

mezya [45]

We can determine that the ratio is simplified by checking that the numbers in ratio can be divided with the same number, if it can be divided then it is not simplified for example 9:12 is the ratio and we can divide both numbers with 3 and then we get 3 : 4.
Now we cannot divide 3:4 further with any same number so this is simplified form.

3 0

2 years ago

Please help and explain

Murrr4er [49]

Answer: Option A

$x=\frac{3+i}{2}$ or $x=\frac{3-i}{2}$

Step-by-step explanation:

Use the quadratic formula to find the zeros of the function.

For a function of the form

$ax ^ 2 + bx + c = 0$

The quadratic formula is:

$x=\frac{-b\±\sqrt{b^2-4ac}}{2a}$

In this case the function is:

$2x^2-6x+5=0$

So

$a=2\\b=-6\\c=5$

Then using the quadratic formula we have that:

$x=\frac{-(-6)\±\sqrt{(-6)^2-4(2)(5)}}{2(2)}$

$x=\frac{6\±\sqrt{36-40}}{4}$

$x=\frac{6\±\sqrt{-4}}{4}$

Remember that $\sqrt{-1}=i$

$x=\frac{6\±\sqrt{4}*\sqrt{-1}}{4}$

$x=\frac{6\±\sqrt{4}i}{4}$

$x=\frac{6\±2i}{4}$

$x=\frac{3\±i}{2}$

$x=\frac{3+i}{2}$ or $x=\frac{3-i}{2}$

3 0

2 years ago

Which pair represents equivalent ratios? A Begin fraction . . . 2 over 3 . . . end fraction . . . and . . . begin fraction . . .

Blizzard [7]

Equivalent ratios are those ratios which are same that is on simplifying each of them, we will get the same answer.

A. $\frac{2}{3} and \frac{9}{15} = \frac{3}{5}$

So they are not equivalent

B. $\frac{5}{8} and \frac{15}{21} = \frac{5}{7}$

So they are not equivalent

C. $\frac{3}{12} and \frac{6}{18} = \frac{1}{4} and \frac{1}{3}$

They are not equivalent too.

D. $\frac{4}{10} and \frac{12}{30} = \frac{2}{5} and \frac{2}{5}$

And they are equivalent. SO the correct option is D .

5 0

2 years ago

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The combined mass of two children is 75lbs. The first child is four times the mass of the second child. What are the masses of t

gayaneshka [121]

The second child is about 19lbsif you want to round it otherwise it's 18 something lbs, so the first child is about... 57.

3 0

2 years ago

Read 2 more answers