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Kay [80]
3 years ago
15

Help ............. ​

Mathematics
1 answer:
NARA [144]3 years ago
5 0

What kinda of math is this so i can answer..

:)

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In the diagram, g ∥ h, m∠1 = (4x + 36)°, and m∠2 = (3x – 3)°. What is the measure of ∠3? 21° 60° 120° 159°
cricket20 [7]
M<2 = m<3
but
m<1 + m<2 = 180
4x + 36 + <span>3x – 3 = 180
7x + 33 = 180
7x = 147
x = 21

m<2 = </span><span>3x – 3
m<2 = 3(21) - 3
m<2 = 63 - 3
m< 2 = 60

m<3 = m<2 = 60

answer
</span><span>60°</span>
4 0
3 years ago
A cylinder has a height of 10 inches and a radius of 5.5 inches. What is the
umka2103 [35]

Answer: 949.85 in 3

Step-by-step explanation:i took the test lol

5 0
3 years ago
The plus minus of a player for the first forty games of the season is listed below. A plus when is your team scored more
Tamiku [17]

Answer:

take the population mean divided by four

Step-by-step explanation:

4 0
3 years ago
A certain virus infects one in every 400 people. A test used to detect the virus in a person is positive 90% of the time if the
Ahat [919]

Answer:Given:

P(A)=1/400

P(B|A)=9/10

P(B|~A)=1/10

By the law of complements,

P(~A)=1-P(A)=399/400

By the law of total probability,

P(B)=P(B|A)*P(A)+P(B|A)*P(~A)

=(9/10)*(1/400)+(1/10)*(399/400)

=51/500

Note: get used to working in fraction when doing probability.

(a) Find P(A|B):

By Baye's Theorem,

P(A|B)

=P(B|A)*P(A)/P(B)

=(9/10)*(1/400)/(51/500)

=3/136

(b) Find P(~A|~B)

We know that

P(~A)=1-P(A)=399/400

P(~B)=1-P(B)=133/136

P(A∩B)

=P(B|A)*P(A) [def. of cond. prob.]

=9/10*(1/400)

=9/4000

P(A∪B)

=P(A)+P(B)-P(A∩B)

=1/400+51/500-9/4000

=409/4000

P(~A|~B)

=P(~A∩~B)/P(~B)

=P(~A∪B)/P(~B)

=(1-P(A∪B)/(1-P(B)) [ law of complements ]

=(3591/4000) ÷ (449/500)

=3591/3592

The results can be easily verified using a contingency table for a random sample of 4000 persons (assuming outcomes correspond exactly to probability):

===....B...~B...TOT

..A . 9 . . 1 . . 10

.~A .399 .3591 . 3990

Tot .408 .3592 . 4000

So P(A|B)=9/408=3/136

P(~A|~B)=3591/3592

As before.

Step-by-step explanation: its were the answer is

5 0
3 years ago
Answer Question QUICKILY please
Mariana [72]
In a circle, the internal vertical angles have a formula of \frac{a + b}{2}

In this case, the formula would be: \frac{4x + 2x}{2} = \frac{6x}{2} = 3x

We know that whole circle is 12x. And 12x is equal to 360°. When we put that into equation: 12x = 360
x = 30

If x is 30°: 3x =3 \times 30 = 90

So, angle 7 is 90°.

5 0
3 years ago
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