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pogonyaev
2 years ago
9

Please help. NEED THE ANSWER SOON AS POSSIBLE.

Mathematics
1 answer:
rewona [7]2 years ago
6 0

Answer:

y=4x-17

Step-by-step explanation: Distribute the 4(x-5)

4x-20

Then add three to both sides

y=4x-17

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A standard chemistry examination administered nationally by the American Chemical Society has a mean of 500 and a standard devia
Maslowich
Let X be a random sample representing the score of a student in the American Chemical Society Examination.
P(450 < x < 500) = P((450 - 500)/(90/sqrt(25)) < z < (500 - 500)/(90/sqrt(25))) = P(-2.778 < z < 0) = P(z < 0) - P(z < -2.778) = P(z < 0) - [1 - P(z < 2.778)] = P(z < 0) + P(z < 2.778) - 1 = 0.5 + 0.99727 - 1 = 0.49727 = 49.7%
4 0
3 years ago
What is m∠V?
Bezzdna [24]
We know that
Applying the law of cosines

c²=a²+b²-2*a*b*cos C------> cos C=[a²+b²-c²]/[2*a*b]

in this problem

a=7.6 in

b=8.6 in

c=7.4 in

C=angle V

 cos C=[7.6²+8.6²-7.4²]/[2*7.6*8.6]----> 0.5887

C=arc cos (0.5887)--------> C=53.93°-------> C=53.9°


the answer is

angle V is 53.9°


5 0
3 years ago
Please answer this for me
Bumek [7]

Answer:

422.39 sq cm

Step-by-step explanation:

Find the area of the circle and subtract the area of the rectangle from it.

Circle area: pi*12^2, 144pi sq cm

REctangle area: 10*3=30sq cm

144pi-30≈422.39

7 0
3 years ago
Shawn downloads movies at a base price of $2 per movie. If he downloads 5 movies, he will get a 25% discount. How much money wil
horrorfan [7]

Answer: He will spend $7.50 & save $2.50

Step-by-step explanation: So if shawn downloads 5 movies at $2 a piece, that makes 10 dollars worth of movies, but it he gets a 25% discount that means he spends $2.50 less than $10 which is $7.50.


4 0
3 years ago
Read 2 more answers
Esmerelda flips a coin and draws a card. What is the possibility that she gets “heads” and a black card?
elena55 [62]
The possibility of flipping heads is 1 in 2 (1/2)
the possibility of pulling a black card is 26 in 52 (26/52) which equals 1 in 2 (1/2)
multiply those together and you get 1 in 4, 1/4, or a 25%
7 0
2 years ago
Read 2 more answers
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