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3 years ago

14

Need help ASAP Will mark you brainlist

1 answer:

svp [43]3 years ago

7 0

Answer:

12 and less

Step-by-step explanation:

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Solve equation using square root property<br> X2-8X+16=1

igor_vitrenko [27]

X^2-8x+16=1\\ \\x^2-8x+16-1=0\\ \\x^2-8x+15=0\\ \\\Delta = b^{2}-4ac = (-8)^{2}-4*1*15=64-60=4 \\ \\x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{8- \sqrt{4}}{2}=\frac{8-2}{2}= \frac{6}{2}=3\\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{8+ \sqrt{4}}{2}=\frac{8+2}{2}= \frac{10}{2}=5\\ \\Answer : x=3 \ \ or \ \ x = 5

7 0

3 years ago

What is 8/6 divided by 5/4?

34kurt

Answer:

$1 \frac{1}{15}$

Step-by-step explanation:

<em>Hey there!</em>

<em />

Well when dividing fractions you need to use Keep, Change, Flip.

$\frac{8}{6} / \frac{5}{4}$

Keep, Change, Flip

$\frac{8}{6} * \frac{4}{5}$

$\frac{32}{30}$

Simplified

16/15

$1 \frac{1}{15}$

<em>Hope this helps :)</em>

7 0

4 years ago

Read 2 more answers

Nancy's 50 meter freestyle swim time was 28.004 seconds Betty's 50 meter freestyle swim time was 27.949 seconds what's the diffe

fredd [130]

28.004 - 27.949 = 0.055 seconds

The difference between the times is 0.055 seconds.

7 0

3 years ago

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Study the stem-and-leaf plot. How many cars get between 30 and 50 miles per gallon? 55 POINTS

Serhud [2]

There are 8 cars which gives between 30 to 50 miles per gallon.

Step-by-step explanation:

Stem-and-leaf plot are one of the most classical form of plotting.
The left hand side of vertical line is stem and right is leaf.
unit digit is leaf and tenths digit is stem.
0-9,10-19,20-29,30-39,40-49,50-59,60-69 is range.
Plotting is done by the number which comes between the range.
Example between 10-19 there are two points 19 and 19.
They use discrete variable not continuous.
The are easy to understand because discrete is counting numbers.

4 0

3 years ago

Read 2 more answers

Kira new chatted online with all her friends for 2/3 of a hour on Saturday and 1/4 of an hour on Sunday. She chatted with Penelo

raketka [301]

Answer:

$\frac{11}{96}$ of an hour.

Step-by-step explanation:

Given:

Koran new chatted online with all her friends on Saturday for = 2/3 of a hour.

Koran new chatted online with all her friends on Sunday for = 1/4 of an hour.

She chatted with Penelope for = 1/8 of the total time.

Question asked:

Which fraction of an hour did Koran apes chatting with Penelope ?

Solution:

Koran new chatted online with all her friends on Saturday for = $\frac{2}{3}$ of an hour

Koran new chatted online with all her friends on Sunday for = $\frac{1}{4}$ of an hour

Total time of chatting = $\frac{2}{3}+$ $\frac{1}{4}$

= $\frac{8+3}{12}$ ( By taking LCM of 3 and 4 we get 12 )

= $\frac{11}{12}$ of an hour

Now, She chatted with Penelope for = $\frac{1}{8}\ of \frac{11}{12} = \frac{1}{8}\ \times \frac{11}{12} = \frac{11}{96}$ of an hour

Therefore, Koran chat $\frac{11}{96}$ of an hour with Penelope.

7 0

4 years ago

Read 2 more answers