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3 years ago

Look at this expression.

Mathematics

1 answer:

g100num [7]3 years ago

4 0

Multiply x and 3

Multiply x and 1

The x just gets copied along.

The answer is x

3*x evaluates to 3x

Because of the minus sign

3x becomes - 3x

The answer is -3x

Multiply y and 2

Multiply y and 1

The y just gets copied along.

The answer is y

2*y evaluates to 2y

-3*x-2*y evaluates to -3x-2y

The answer is -3x-2y-2

-3*x-2*y-2 evaluates to -3x-2y-2

so the first one is right

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With what initial velocity must an object be thrown upwards so that it will reach a maximum height of 800 feet? Assume the that

Flauer [41]

Answer:

Option b is right.

Step-by-step explanation:

When an object is thrown upwards, the acceleration acting is acceleration due to gravity in a negative manner.

a = -32 ft/sec square

Initial velocity let it be u

Final velocity when it reaches maximum height is 0

Use the formula connecting, u, v, a and s

$v^2=u^2+2as\\0 = u^2-2(32)(800)\\u = \sqrt{64(800)} \\u = 160*0.707\\= 226.27$ ft/sec

Hence we find that initial velocity is 226 ft/sec

Option b is right.

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3 years ago

Rewrite as a unit rate.

EastWind [94]

Answer:

rewrite what as the unit rate?

Step-by-step explanation:

What is the question

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2 years ago

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sleet_krkn [62]

at x = 0, y = 100, y-intercept

meaning at 0 years, at the very beginning of functioning, the satellite had 100 units of power.

at y = 0, x = 10, x-intercept

meaning, at year 10, the satellite had 0 units of power, already out of power.

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2 years ago

The cost of belonging to a gym can be modeled by C(m)= 50m + 79.50, where C(m) is the total cost for m months of membership. Sta

erik [133]

Answer:

The slope is 50, which is the cost per month of the gym membership, and 79.50 is the y intercept. It represents the initial cost to join the gym.

Step-by-step explanation:

C(m)= 50m + 79.50,

This is written in the form y= mx+b where m is the slope and b is the y intercept.

The slope is 50, which is the cost per month of the gym membership, and 79.50 is the y intercept. It represents the initial cost to join the gym.

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3 years ago

WILL GIVE BRAINLIEST

Fittoniya [83]

Answer:

The second leg of the right triangle is about 9.4.

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3 years ago

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