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3 years ago

Help me please I need help on this question

Mathematics

1 answer:

Elena L [17]3 years ago

8 0

The answer would be the 3rd choice because this is a translation

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If f(x)=x+1/x-1 and g(x)=1/x, find f(-2x)

dezoksy [38]

Answer:

First notice that θ is in quadrant I, where the sine and tangent will also be positive.

Then draw the angle in quadrant I. Drop a perpendicular to the x axis.

Since cosθ= 7/25, label the horizontal leg 7, and the hypotenuse 25; the vertical leg will be 24 by Pythagorean theorem.

Then sinθ=vertical/hypotenuse= 24/25 and tanθ= vertical/horizontal= 24/7

Step-by-step explanation:

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2 years ago

A candle that is 13 inches tall is lit. as the candle burns, its height decreases at a rate of 0.5 inches per hour. let t t repr

barxatty [35]

T =hours,. l=length
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3 years ago

Adult male heights are normally distributed with a mean of 70 inches and a standard deviation of 3 inches. The average basketbal

sweet-ann [11.9K]

Answer: First Option is correct.

Step-by-step explanation:

Since we have given that

Mean $(\mu)$ = 70 inches

Standard deviation $(\sigma)$ = 3 inches

Average basket ball player $(\bar{X})$ = 79 inches

Since it is normally distributed assume with 5% significance .

So, it becomes,

$Z>\frac{\bar{X}-\mu}{\sigma}\\\\Z>\frac{79-70}{3}\\\\Z>\frac{9}{3}\\\\Z>3\\\\\therefore\ P(Z>3)=1-0.9987=0.0013$

At 0.05 level of significance , 0.0013 = 0.13% of the adult male population is taller than the average basketball player .

Hence, First Option is correct.

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2 years ago

Read 2 more answers

Sonya can walk 6 kilometers in 3 hours. If she has to walk 10 kilometers how much time will it take her?

kupik [55]

$6\ km\ in\ 3\ hours\\\\
10\ km\ in\ x\ hours\\\\
proportion:\\
6-3\\
10-x\\\\
cross\ multiplication\\\\
6x=3*10\\\\
6x=30\ \ \ | divide\ by\ 6\\\\
x=5\\\\ It\ will \ take\ 5\ hours.$

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2 years ago

Elsie and her friends plan to drive 1048 miles during their road trip. How many gallons of gas will they need for this trip?

ElenaW [278]

That would depend on the car and the amount of miles the car can go on one tank of gas. Divide that amount from 1048 to get the answer.

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2 years ago