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Katena32 [7]
3 years ago
8

Please help me with this! Thank you

Mathematics
1 answer:
Kruka [31]3 years ago
6 0

Answer:

show ur work first

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
A jar of jelly that weighs 4.25 Oz cost $2.89 what is the cost of 1 oz of jelly
Hitman42 [59]
In order to find the cost of one ounce, you need to first find the unit rate. This means divide $2.89 by 4.25, giving you .68 as your final answer. Hope I helped :)
7 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:

  1. r = 3V/(2πh²)
  2. h = 3V/b²
  3. r = 25/π cm ≈ 7.9577 cm
  4. 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."

4 0
3 years ago
Can you please help me figure out how the answer is 1/9 im getting 9​
timama [110]
Can you upload another picture, you cannot really see your problem
6 0
3 years ago
What is an equation of the line that passes through the points (−7,−7) and (−5,−3)?
Lana71 [14]
The answers is -10/13
3 0
3 years ago
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