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taurus [48]
2 years ago
12

Dxcfgvbhjnkmlnjhcgfdxzs

Mathematics
2 answers:
bearhunter [10]2 years ago
8 0

Answer:

D

Step-by-step explanation:

The increase in temperature can be calculated using the absolute value of the difference of the two numbers. The absolute value is the positive value of whatever is inside of the two symbols, |       |.

We can check this by seeing that at midnight the temperature was -8, and at noon it was 23. Therefore, the temperature increased 23+8 degrees which is 31.

| -8-23 | = 31, which allows us to see that D is the correct answer

Bogdan [553]2 years ago
6 0

Answer:

D

Step-by-step explanation:

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I need more info if I’m gonna answer this question!
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3 years ago
A sorority has 38 members, 28 of whom are full members and 10 are pledges. Two persons are selected at random from the membershi
butalik [34]

Answer:

(a) 185/703

(b) 518/703

(c) 45/703

(d) 140/703

(e) 140/703

(f) 378/703

(g) 185/703

Step-by-step explanation:

Let the event of pledge member be P and event of full member be F

(a)If the first is a pledge, then the second is either a pledge or a member.

required Probabability = [P n (PUF)]

= Pr(PnP) U Pr (PnF)

= 10/38 × 9/37 + 10/38 × 28/38

= 90/1406 + 289/1406 = 370/1406

= 185/703

(b) if the person selected is not a pledge then the person is a full member and the second is either a full member or pledge

The required probability = Fn(FUP) =Pr (FnP) U Pr(FnF)

= 28/38 × 10/37 + 28/38 × 27/37

= 280/1406 + 756/140 = 1036/1406

= 518/703

(c) probability required= Pr(P/P) = Pr(PnP) = 10/38 × 9/37

= 90/1406

= 45/703

(d) Probability required = Pr(F/P)

= Pr(P) nPr(F) = 10/38 × 28/37

= 280/1406

= 140/703

(e) Probability required = Pr(P/F)

= Pr(F) n Pr(P)

= 28/38 × 10/37 =280/1406

=140/704

(f) Probability required = Pr (FnF)

= Pr(F) n Pr(F)

= 28/38 × 27/37= 756/1406

= 378/703

(g) it is the either the first person is a pledge member or a full member

Probability required = Pr[(PnP) U (FnP)]

= Pr(PnP) + Pr(FnP)

= 10/38 × 9/37 + 28/38 × 10/37

= 90/1406 + 280/1406

= 370/1406

= 185/703

(h) see attachment.

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3 years ago
Solve the inequality 2ax-3<4x+5a for all possible values of the parameter a
olga_2 [115]

Answer:

Step-by-step explanation:

2ax−3<4x+5a

Step 1: Add -5a to both sides.

2ax−3+−5a<5a+4x+−5a

2ax−5a−3<4x

Step 2: Add 3 to both sides.

2ax−5a−3+3<4x+3

2ax−5a<4x+3

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3 years ago
Employees at The Shoe Shack get a 25% discount when they buy a pair of shoes at the store. Theo wants to buy a pair of shoes wit
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Answer:

$12

Step-by-step explanation:

We know that 25% means 25 out of 100, which can be represented by 25/100 or 1/4.

To get the discount we multiply 48 by 1/4 which is 48/4 = $12

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3 years ago
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Given the diagram below what is tan 60?
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Answer:

A) √3

Step-by-step explanation:

The tangent of an angle can be found by dividing the leg opposite the angle over the leg adjacent to it.

So, we have to find them.

The 30-60-90 rule says that in a right triangle with the angles 30°, 60° and 90°, the sides opposite those angles will have the ratio of 1:√3:2.

That means the side adjacent to 60° is 2 units long and the one opposite is 2√3 units long.

Dividing those two gives us (2√3)/2, which can be simplified to √3.

3 0
3 years ago
Read 2 more answers
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