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melomori [17]
3 years ago
14

ALMOST 50 POINTS COME AND GET IT!!!

Mathematics
2 answers:
marusya05 [52]3 years ago
7 0

Answer:

yay tysmm also good morning

Elena L [17]3 years ago
6 0

Answer:

thanks thanks :D

Step-by-step explanation:

3.141592653589793238462643383279502884197169399375105820974944592307816406286

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Find the value of x² - x+1 when x=√3 -1, in the form a+b√3 where a and b are integers​
lidiya [134]

Answer:

6-3\sqrt{3}

If you compare this to a+b\sqrt{3}, then a=6 and b=-3.

Step-by-step explanation:

We are given x=\sqrt{3}-1 and we are asked to find the value of x^2-x+1.

So we will need to find x^2.

x=\sqrt{3}-1

Square both sides:

x^2=(\sqrt{3}-1)^2

Expand using identity: (x-a)^2=x^2-2ax+a^2.

x^2=(\sqrt{3})^2-2(\sqrt{3})(1)+1^2

x^2=3-2\sqrt{3}+1

x^2=4-2\sqrt{3}

Let's go back to the full x^2-x+1.

x^2-x+1

(4-2\sqrt{3})-(\sqrt{3}-1)+1

4-2\sqrt{3}-\sqrt{3}+1+1

6-3\sqrt{3}

If you compare this to a+b\sqrt{3}, then a=6 and b=-3.

5 0
4 years ago
Write the proportion and solve:
ElenaW [278]

Answer:

810 min

Step-by-step explanation:

5 miles for 45 min

90 miles for x min

x = (90*45)/5

x= 810 min = 13.5 hours

8 0
3 years ago
Read 2 more answers
1. Write the equation of the line that is described. Give your answer in slope-intercept form.
kirill115 [55]

Answer:

sign

Step-by-step explanation:

me up cause -2-2 perp to the minus of p+2 divided by 7 = X

3 0
3 years ago
A football coach is trying to decide: When a team is ahead late in the game, which strategy is better?
PSYCHO15rus [73]

Answer:

You are more likely to win by playing regular defense.

Step-by-step explanation:

Assume out of 100 reviewed games, there were 50 regular defense games and 50 prevent defense games. And out of 50 regular defense games, 38 were win, 12 were lose. And out of 50 prevent defense game, 29 were win, 21 were lose.

Probability to win the game by playing regular defense is:

P(win | regular) = 38/50 = 0.76

Probability to win the game by playing prevent defense is:

P(win | prevent) = 29/50 = 0.58

Since the probability of winning by regular defense game is more than prevent defense game (0.76 > 0.58), you are more likely to win by playing regular defense.

5 0
3 years ago
Read 2 more answers
Expand the expression using the distributive property: 6(4x + 5y + 2)
Oksanka [162]

Answer:

24 x + 30 y + 12

Step-by-step explanation:

this is simplified

5 0
3 years ago
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