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3 years ago

7

Use the image below to answer the following question. Find the value of sin x° and cos y°. What relationship do the ratios of si

n x° and cos y° share?

1 answer:

postnew [5]3 years ago

3 0

Step-by-step explanation:

sinx=5/13

cosy=5/13

RELATIONSHIP

they are equal to one another

OR

sinx=cosy

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Draw and compare models of 3/4 of a pizza pie and 6/8 of the same size pie.

pishuonlain [190]

Well 6/8 reduced is 3/4 so technically the pizzas are the same just one is cut into smaller pieces.

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3 years ago

Simplify -2x^3yxxy^2

Readme [11.4K]

Answer:

-2x^(5)y^(3)

Step-by-step explanation:

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3 years ago

An attacker at the base of a castle wall 4 m high throws a rock straight up with speed 7.5 m/s from a height of 1.5 m

Sergeu [11.5K]

Answer:

a) Yes, b) $v\approx 2.686\,\frac{m}{s}$ , c) $v_{o} \approx 7.002\,\frac{m}{s}$

Step-by-step explanation:

a) The maximum height reached by the rock is:

$\Delta y = \frac{\left(0\,\frac{m}{s} \right)^{2}-\left(7.5\,\frac{m}{s} \right)^{2}}{2\cdot \left(-9.807\,\frac{m}{s^{2}} \right)}$

$\Delta y = 2.868\,m$

$y = 1.5\,m + 2.868\,m$

$y = 4.368\,m$

Yes, the rock will exceed the top of the wall.

b) The speed when the rock reaches the top of the wall:

$v = \sqrt{\left(7.5\,\frac{m}{s} \right)^{2}+2\cdot \left(-9.807\,\frac{m}{s^{2}} \right)\cdot (4\,m-1.5\,m)}$

$v\approx 2.686\,\frac{m}{s}$

c) The initial speed required so that stone does not exceed the top of the wall is:

$v_{o} = \sqrt{\left(0\,\frac{m}{s} \right)^{2}-2\cdot \left(-9.807\,\frac{m}{s^{2}} \right)\cdot (4\,m-1.5\,m) }$

$v_{o} \approx 7.002\,\frac{m}{s}$

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4 years ago

(4x2 + 3x – 8) (x – 3)

Lunna [17]

The answer is 3x^2-9x.

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3 years ago

What is the y-intercept of this equation? y = -2x + 1

ankoles [38]

Answer:

y intercept at y = 1

Step-by-step explanation:

recall that for a linear equation expressed in slope-intercept form,

y = mx + b, where

m = slope and b = y intercept

in our case, y = -2x + 1, comparing this to the general equation above, we can see that clearly slope, m = -2 and y-intercept, b occurs at y = 1

Hope this helps!

6 0

4 years ago

Read 2 more answers