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nalin [4]
3 years ago
12

MATH

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
4 0

Answer:

1. x = 86

2. x = 31

3. x = 64

4. x = 29

Step-by-step explanation:

1. 2x + 8 = 180

-8 -8

2x = 180 (divide both sides by 2 to get x by itself)

2. 3x - 3 = 90

+ 3 +3

3x = 93 (divide both sides by 3 to get x by itself. you divide because 3x is multiplying and you have to do the reverse operation)

3. 2x -5 + x - 7 = 180 (you combine like-terms)

3x -12 = 180

+12 +12

3x = 192 (you divide by 3 on both sides)

4. x + 1 + x + 4 + x - 2 = 90 (combine like-terms)

3x + 3 = 90

-3 -3

3x = 87 (divide both sides by 3)

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Sharkira went bowling with her friends.She paid $3 to rent shoes and then 4.75 for each game of bowling. If she spent a total of
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$21 - $3 = $18

$18 - $4.75 = $13.25 

$13.25 - $4.75 = $8.50

$8.50 - $4.75 = $3.75

Which means that she played 3 games, and has $3.75 left over. 

But if you were to divide 4.75 from 21 it would equal 4 games and $2 left over.

21 - 4.75 = 16. 25

16.25 - 4.75 = 11.50

11.50 - 4.75 = 6.75

6.75 - 4.75 = 2

4 games and $2 dollars left over.


Answer - 3

6 0
3 years ago
If sin Θ = 2 over 3 and tan Θ < 0, what is the value of cos Θ?
guapka [62]
If sin Θ is positive and tan Θ is negative, then the angle should be in the second quadrant using the rule of thumb. In this case, cos Θ is expected to be negative. Using the calculator, the answer is -0.7454. This is equivalent to option D. <span>negative square root of 5 over 3</span>
6 0
3 years ago
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Please actually do it im gonna k m s if someone answers this with a link again ​
Elena L [17]

Answer:

Top one, least to greatest:

-\sqrt{54}, -\frac{3}{9}, \frac{9}{5}, \pi, 6.6, \sqrt{75}

Bottom one, greatest to least

9.6, \sqrt{34}, \frac{9}{9}, -4.2, -7\frac{2}{5}, -\sqrt{85}

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3 years ago
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The probability that event A occurs is 0.4, and the probability that events A and B both occur is 0.25. If the probability that
ICE Princess25 [194]

Answer:

The probability that event B will occur is 0.45

Step-by-step explanation:

Given;

probability that event A occurs, P(A) = 0.4

the probability that events A and B both occur, P(A ∩ B) = 0.25

the probability that either event A or event B occurs, P(A ∪ B) = 0.6

To determine the probability that event B will occur, we use probability addition rule;

P(A) + P(B) = P(A ∩ B) + P(A ∪ B)

0.4 + P(B) = 0.25 + 0.6

0.4 + P(B) = 0.85

P(B) = 0.85 - 0.4

P(B) = 0.45

Therefore, the probability that event B will occur is 0.45

4 0
2 years ago
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Serjik [45]

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▹ Answer

<em>y = 15, -15</em>

▹ Step-by-Step Explanation

This is considered a 'square root' since we have to find y^2.

15 * 15 = 225

-15 * -15 = 225

Both of these values work for y, so the answer is 15, -15.

Hope this helps!

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