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2 years ago

HELP With this question

Mathematics

1 answer:

ahrayia [7]2 years ago

6 0

Answer:

Step-by-step explanation:

sin 60=CB/18

$\frac{\sqrt{3} }{2} =\frac{CB}{18} \\CB=9\sqrt{3}$

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Zafira drinks 4 fluid ounces of orange juice each morning. Which equation can be used to find m, the number of mornings it will

Stells [14]

Answer:

Step-by-step explanation:

m = (4×8) ÷ 4

m = 8 mornings

5 0

3 years ago

this is formula manipulation, I'd appreciate if the steps were provided. only respond if you know how to get the answer, thank y

marissa [1.9K]

Answer:

r = 3V/(2πh²)
h = 3V/b²
r = 25/π cm ≈ 7.9577 cm
w = 15 cm

Step-by-step explanation:

1. Multiply both sides of the equation by the reciprocal of the coefficient of r.

$V\cdot\dfrac{3}{2\pi h^2}=r\\\\r=\dfrac{3V}{2\pi h^2}$

2. Multiply both sides of the equation by the reciprocal of the coefficient of h.

$V\cdot\dfrac{3}{b^2}=h\\\\h=\dfrac{3V}{b^2}$

3. Solve the circumference formula for r, then substitute the given information.

$C=2\pi r\\\\r=\dfrac{C}{2\pi}\qquad\text{divide by the coefficient of r}\\\\r=\dfrac{50\,\text{cm}}{2\pi}=\dfrac{25}{\pi}\,\text{cm}\approx 7.9577\,\text{cm}$

4. Solve the perimeter formula for width, the substitute the given information and do the arithmetic.

$P=2(L+W)\\\\\dfrac{P}{2}=L+W\qquad\text{divide by 2}\\\\\dfrac{P}{2}-L=W\qquad\text{subtract L}\\\\\dfrac{40\,\text{cm}}{2}-5\,\text{cm}=W=15\,\text{cm}$

_____

In general, solving for a particular variable involves "undoing" what has been done to the variable, usually in the reverse order. In part 4, the variable W has L added and the sum is multiplied by 2. We "undo" those operations, last operation first, by dividing by 2 and subtracting L.

The properties of equality say you can do what you like to an equation as long as you do the same thing to both sides of the equation. So, when we say "divide by 2", we mean "divide both sides of the equation by 2." Likewise, "subtract L" means "subtract L from both sides of the equation."

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3 years ago

A box is sitting on the floor. The box was then pulled with a force, Ft. The box did not move. The free-body diagram of the box

WINSTONCH [101]

Answer:

Step-by-step explanation:

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2 years ago

Read 2 more answers

2. John earns a 3% commission for every car he sells. Today he sold a car for $13,600. How much commission did he receive? (To f

OlgaM077 [116]

Answer:

$408

Step-by-step explanation:

Find 3% of $13,600:

3 * 13,600 / 100 = $408

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2 years ago

A forest ranger can see for a distance of 12 miles from a firetower. Formulas Show calculator Select the best answer How many sq

BabaBlast [244]

That would be the area of a circle of radius 12 miles

= pi r^2 = 452.4 square miles to nearest tenth.

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2 years ago