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kobusy [5.1K]
3 years ago
9

Answer true and false please thanks

Mathematics
1 answer:
Aleksandr [31]3 years ago
6 0
Option a is true and others are false

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Solve the following inequality for b in terms of a: 3a +7b > 2a - 8b
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Answer:

Step-by-step explanation:

do free points and brainliest

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Convert 20 minutes to seconds
mario62 [17]

Step-by-step explanation:

60 seconds=1 minute

20 minutes=? seconds

60*20= 1,200

1,200 seconds=20 minutes

<u><em>Hope this helps!!!</em></u>

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if Sam has 200$ and gives her mom 20$ to go get her some clothing. her mom comes back and gives Sam 9$. how much did her mom spe
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her mom spent 11 dollars

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20-9 is 11

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Draw one card at random from a standard deck of cards. the sample space s is the collection of the 52 cards. assume that the pro
olchik [2.2K]
In probability problems, look out for the word OR and AND.

OR means adding the probability
AND means multiplying the probability

P(a) = P(jack) + P(queen) + P(king) = (4/52) + (4/52) + (4/52) = 12/52 = 3/13

P(b) = [P(9) + P(10) + P(jack)] × P(red) = [(4/52) + (4/52) + (4/52)] × (26/52)
P(b) = (12/52) × (26/52) = 3/26

P(c) = 13/52 = 1/4

P(d) = P(a diamond) + P(a heart) + P(a spade) =  (13/52) + (13/52) + (13/52) = 3/4
7 0
3 years ago
(Law of Sines)
Mariana [72]

Answer:

Option (D) is correct.

Step-by-step explanation:

In a triangle BCD , with b, c, d as the sides of triangle.

Sine rule states when we we divide side b by the sine of angle B then it is equal to side c divided by the sine of angle C and also equal to side d divided by the sine of angle D.

Using Sine rule,

\frac{b}{\sin B}=\frac{c}{\sin C}=\frac{d}{\sin D}

Consider the first and third ratio,

\frac{b}{\sin B}=\frac{d}{\sin D}

Substitute the values of d = 3 , b= 5 and ∠D=25°

\Rightarrow \frac{5}{\sin B}=\frac{3}{\sin 25^{\circ}}

\Rightarrow \sin B=\frac{\sin 25^{\circ} \times 5}{3}}  

 \Rightarrow \sin B=45,135

Thus, Measure of angle B is 45 and 135 as sinB is positive is first and 2nd quadrant.

Thus, option (D) is correct.


7 0
3 years ago
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