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konstantin123 [22]

2 years ago

10

2. A student on the track team runs 45 minutes each day as a part of her training. She

1 answer:

fomenos2 years ago

8 0

Answer:

D

Step-by-step explanation:

The basic equation to solve this would be D = RT, which is

D is Distance

R is Rate (speed)

T is time

To find total distance D, we can find individual distances for two legs of the whole.

First Leg:

R = 8

T = a

D = 8a

Second Leg:

R = 7.5

T = b

D = 7.5b

Total distance D is:

D = 8a + 7.5b

Moreover, we know student runs 45 minutes in total hence a + b = 45 or we can say a = 45 - b, so we can replace this in the equation found:

D = 8a + 7.5b

D = 8(45 - b) + 7.5b

Answer choice D is right.

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If cos Θ = square root 2 over 2 and 3 pi over 2 < Θ < 2π, what are the values of sin Θ and tan Θ?

KIM [24]

Answer:

The answer is

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Step-by-step explanation:

we know that

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In this problem we have

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$\frac{3\pi}{2}$

so

The angle $\theta$ belong to the third or fourth quadrant

The value of $sin(\theta)$ is negative

Step 1

Find the value of $sin(\theta)$

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$sin^{2}(\theta)+cos^{2}(\theta)=1$

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substitute

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$sin^{2}(\theta)=\frac{1}{2}$

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Step 2

Find the value of $tan(\theta)$

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$sin(\theta)=-\frac{\sqrt{2}}{2}$

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2 years ago

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Soloha48 [4]

Answer:

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