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andreyandreev [35.5K]

3 years ago

12

Select the correct answer.

1 answer:

konstantin123 [22]3 years ago

7 0

Answer:

uhhh well im not good but im gonna try and i think b sorry if wrong

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Edmund purchased a computer for $1,800 on a payment plan (month zero). Three months after he purchased the computer, his balance

trapecia [35]

Answer:

Well I can't make a table but I can explain the answer.

Step-by-step explanation:

So you have $1,800 on a payment plan. In three months, the balance is 1,350. So 1,800-1,350=450. This means he paid $450 in three months. 450/3 is 150. He pays $150 a month. Then 2 months later, (5 months after purchase) he has balance is $1,050. 1,350-1,050=300. 300/2=150. Further evidence of the fact that he pays 150 dollars a month. This means that the 6th month, he will have $900 dollars left on the payment. 7th month... $850, 8th month... $600, 9th month... $450, 10th month... 300 dollars, 11th month... 150, and 12 month he will have paid off all of his computer. Hope it helps, sorry it is so long. Have a great day! :D

6 0

3 years ago

Simplify 4√27 + 6√75

Nataly_w [17]

$4\sqrt{27}+6\sqrt{75}$
$=4*3\sqrt{3}+6*5\sqrt{3}$
$=12\sqrt{3}+30\sqrt{3}$
$=42\sqrt{3}$

7 0

3 years ago

Read 2 more answers

I Need The Answer Please Help!!

mariarad [96]

Answer:

33°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the 2 given angles from 180 for ∠1, that is

∠1 = 180° - (116 + 31)° = 180° - 147° = 33°

5 0

3 years ago

You and a friend play a game where you each toss a balanced coin. If the upper faces on the coins are both tails, you win $1; if

oksian1 [2.3K]

Answer: The mean and variance of Y is $0.25 and $6.19 respectively.

Step-by-step explanation:

Given : You and a friend play a game where you each toss a balanced coin.

sample space for tossing two coins : {TT, HT, TH, HH}

Let Y denotes the winnings on a single play of the game.

You win $1; if the faces are both heads

then P(Y=1)=P(TT)= $\dfrac{1}{4}=0.25$

You win $6; if the faces are both heads

then P(Y=6)=P(HH)= $\dfrac{1}{4}=0.25$

You loose $3; if the faces do not match.

then P(Y=1)=P(TH, HT)= $\dfrac{2}{4}=0.50$

The expected value to win : E(Y)= $\sum_{i=1}^{i=3} y_ip(y_1)$

$=1\times0.25+6\times0.25+(-3)\times0.50=0.25$

Hence, the mean of Y : E(Y)= $0.25

$E(Y^2)=\sum_{i=1}^{i=3} y_i^2p(y_i)\\\\=1^2\times0.25+6^1\times0.25+(-3)^2\times0.5\\\\=0.25+1.5+4.5=6.25$

Variance = $E[Y^2]-E(Y)^2$

$=6.25-(0.25)^2=6.25-0.0625=6.1875\approx6.19$

Hence, variance of Y = $ 6.19

6 0

4 years ago

If i= -1, what is the value of i3?<br> -1<br> i <br> 1<br> -i

GaryK [48]

Answer:

<h2>- i</h2>

Step-by-step explanation:

$i=-1\\\\i^3=i\cdot i\cdot i=i^2\cdot i=(-1)\cdot i=-i$

7 0

4 years ago