3 years ago

50 POINTS! Could someone answer these three questions? I’ll mark Brainliest

Mathematics

1 answer:

san4es73 [151]3 years ago

7 0

Answer:

Step-by-step explanation:

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Simplify 5x^2y(4x^3-3y^2)-2yx^3(4x^2-2x)+6

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The simplified version of this equation is

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3 years ago

Two forces, one of 45 pounds and the other 50 pounds, act on the same object. The angle between the forces is 33°. Find the magn

bearhunter [10]

Answer:

The magnitude of the resultant force is: 27.40 pounds

Step-by-step explanation:

Given

$F_1 = 45$

$F_2 = 50$

$\theta = 33$

Required

The magnitude of the resultant vector

To do this, we apply cosine formula

$R^2 = F_1^2 + F_2^2 - 2 * F_1 * F_2 * \cos(\theta)$

This gives:

$R^2 = 45^2 + 50^2 - 2 * 45 * 50 * \cos(33)$

$R^2 = 2025+ 2500 - 4500* 0.8387$

$R^2 = 2025+ 2500 - 3774.15$

$R^2 = 750.85$

Take square roots of both sides

$R = \sqrt{750.85\\$

$R = 27.40$

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3 years ago

Hayley cut a 10 2/3 foot rope into pieces that are each 8/9 of a foot long. How many pieces of rope did she cut??

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The answer is 7.5 or 15/2

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The owner of an art supply store buys tubes of magenta oil paint for $10.80 and marks up the cost by 10% to determine the retail

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Answer:

10.80 - 20 percent equals 8.64

Step-by-step explanation:

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3 years ago

Write a simplified equation and explain the strategy.

lesya692 [45]

Answer:

the simplified equation would be 10d=5 (so d=2)

Using the addition property of equality eliminates the subtraction on the right side and results in an equivalent equation.

Step-by-step explanation:

i hope this helped!!

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3 years ago