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1 year ago

7.3 reteaching with practice 415-420

Mathematics

2 answers:

pentagon [3]1 year ago

6 0

Answer:

He is right

Step-by-step explanation:

valkas [14]1 year ago

5 0

Answer:

Eu não entendi, porque se for pergunta de matemática, 415-420 dá um numero negativo que seria -5

Step-by-step explanation:

pense em 420 e tire 415 , simples

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(4-3√3)(2-√3)???? (the question marks signal the gap between the question and then me starting to distribute)

katen-ka-za [31]

You have two binomials. I would just FOIL them:

First:   4 x 2 = 8

Outside: 4 (-√3) = -4√3

Inside:   -3√3 (2) = -6√3

Last:   -3√3 (-√3) = 9

Addummup: 8 - 4√3 - -6√3 + 9 = 17 - 10√3

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2 years ago

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Place a point D along AC such that BD is an altitude of ABC. Using coordinate algebra, find and record the coordinates of point

aliya0001 [1]

Sample answer from Edmentum

Answer:

D = (9.6,0). AC is horizontal with y=0 at all points on AC. Also, because BD is an altitude, it forms a right angle with AC, so BD is a vertical line. For all points on BD, x= 9.6.

Hope this helps, have a good day (:

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2 years ago

at a football game 95% of people attending were supporting the home team while 5% were supporting the visiting team. if the tota

Paraphin [41]

Answer:

3800

Step-by-step explanation:

The first step you want to do is make a proportion

x/4000=95/100

Next you are going to cross multiply which his 4000 times 95 equals 380000 and then multiply 100 times x which is 100x.

Then you are going to divide both sides by 100 and you will cross out the x from the 100 and get only x and then divide 380000 divided by 100 and 3800

Which leaves you with x=3800

3800 people were attending to support the home team

Hope this helps :)

5 0

2 years ago

A $250 item is reduced to $205. Find the percent discount

SOVA2 [1]

Answer:

18%

Step-by-step explanation:

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2 years ago

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Very large or very small numbers are best input with exponential notation. For instance, the number 8,000,000 (eight million) is

Lerok [7]

Answer:

$9*10^{12}km$

Step-by-step explanation:

$9,460,730,472,580.8 km$

First, we can work out 5% of our number, by multiplying it by 0.05

$9,460,730,472,580.8 * 0.05 = 473,036,523,629$

Now, if we add and subtract our 5% calculated from our original number, we can work out the minimum and maximum value that our final answer can be in the range of.

$9,460,730,472,580.8 + 473,036,523,629 = 9.933767*10^{12}\\9,460,730,472,580.8 - 473,036,523,629 =8.98769395*10^{12}$

We can see that $9*10^{12}$ is in the range of valid answers, as:

$8.9*10^{12} \leq 9*10^{12} \leq 9.9 * 10^{12}$

So, our final answer is:

$9*10^{12}km$

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2 years ago

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