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3 years ago

In a group of 55 examinees taking the 50-item test, Rachel obtained the score of 38. This implies that her score is...

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

4 0

Answer:

she scored 76 percent in the test

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Select all of the quadrants that the parabola whose equation is y2= X-4 (principal square root) occupies.

SpyIntel [72]

Answer:

Quadrants I and IV

Step-by-step explanation:

When we graph y^2 = x - 4, we see that it is on the x axis, and goes up into Quadrant I, and down into Quadrant IV

7 0

3 years ago

At 3pm, the length of the shadow of a thin vertical pole standing on level ground is the same as the height of the pole. A while

aliya0001 [1]

Answer: The height of the pole is 175.97 ( approx )

Step-by-step explanation:

Let the height of the pole is x cm,

Also, let the angle of elevation of the sun to the pole at 3 pm is $\theta$

Thus, by the question,

$tan\theta = \frac{\text{ The height of the pole}}{\text{ The height of the shadow}}$

$\implies tan\theta = \frac{x}{x}$ ( at 3pm the height of shadow = height of the pole)

$\implies tan\theta = 1$

$\implies \theta = 45^{\circ}$

Again, according to the question,

When the angle of elevation is $(\theta - 12^{\circ})$ ,

The height of shadow = x + 95,

$\implies tan(45-12)^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}x + 95\times tan33^{\circ}=x$

$\implies tan 33^{\circ}x - x = - 95\times tan33^{\circ}$

$\implies -0.3505924068 x = - 61.6937213538$

$x=175.969930202\approx 175.97\text{ cm}$

4 0

3 years ago

Tommy is purchasing items from an online store. The store charges $6 shipping and handling for each package. Write an expression

faust18 [17]

Answer:

The expression to represent the total shipping costs for x package is 6x.

Tommy will pay $ 12 in shipping and handling for 2 packages.

Step-by-step explanation:

Given that the shipping and handling charge for 1 package = $ 6

So, by using the elementary method, the shipping and handling charge for x package is $ 6x.

Hence, the required expression to represent the total shipping costs for x package is 6x.

For 2 package, x=2

So, the shipping and handling charge for 2 package

=6x2

=12.

So, Tommy will pay $ 12 in shipping and handling for 2 packages.

7 0

3 years ago

Hii this is clockwise

Sati [7]

If you are turning clockwise you will land at south

6 0

3 years ago

Read 2 more answers

What is the correct answer to this question?

Amiraneli [1.4K]

Answer:

548 ft

Step-by-step explanation:

70+70+84+84+120+120

4 0

3 years ago

In a group of 55 examinees taking the 50-item test, Rachel obtained the score of 38. This implies that her score is...​

In a group of 55 examinees taking the 50-item test, Rachel obtained the score of 38. This implies that her score is...