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Anvisha [2.4K]
3 years ago
8

Which equation has the correct sign on the product?

Mathematics
1 answer:
Mila [183]3 years ago
3 0

Answer: a.

Would appreciate brainly <3

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What is container B that is full after the pumping is complete ?
scoray [572]

<em>Answer</em>

68.4%

<em>Step-by-step explanation</em>

The volume of a cylinder is calculated as follows:

V=\pi r^2h

where <em>r </em>is the radius and <em>h </em>is the height of the cylinder.

In the case of cylinder A, its radius is r = 5 ft (= 10/2) and its height is h = 14 ft. Then, its volume is:

\begin{gathered} V_A=\pi\cdot5^2\cdot14 \\ V_A=350\pi\text{ ft}^3 \end{gathered}

In the case of cylinder B, its radius is r = 8 ft (= 16/2) and its height is h = 8 ft. Then, its volume is:

\begin{gathered} V_B=\pi\cdot8^2\cdot8 \\ V_B=512\pi\text{ ft}^3 \end{gathered}

After the pumping is completed all the liquid in cylinder A, which was full, is placed in cylinder B. If the volume of cylinder B represents 100%, then we need to find what percent, <em>x</em>, represents the volume of cylinder A. We can do this with the help of the next proportion:

\frac{512\pi\text{ ft}^3}{350\pi\text{ ft}^3}=\frac{100\text{ \%}}{x\text{ \%}}

Solving for x:

\begin{gathered} 512\pi\cdot x=100\cdot350\pi \\ x=\frac{100\cdot350\pi}{512\pi} \\ x\approx68.4\text{ \%} \end{gathered}

6 0
2 years ago
Tina contributes $500 per month to her retirement account before withholding taxes are taken out of her pay. If her tax bracket
Oksanka [162]
C. ........
Explanation
6 0
3 years ago
Read 2 more answers
If a(x)=3x+1 and b(x)=square root of x-4, what is the domain of (b•a)(x)
jarptica [38.1K]

Answer:

NO

Step-by-step explanation:

....

6 0
3 years ago
What is the coefficient of the variable in the expression 2 − 5x − 4 + 8? A: −5 B:−4 C:2 D:8
vitfil [10]
2-5x-4+8

 A:  -5

===============================
4 0
3 years ago
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How do I solve this equation?
Keith_Richards [23]

Answer:

y=\frac{7}{2}x+11

Step-by-step explanation:

To solve, we need to find the y-intercept (b). In order to find the y-intercept, we can plug in the slope and the (x,y) coordinate pair given to us into the equation to solve for the y-intercept:

y=mx+b

4=(-7/-2)*-2+b

4=14/-2+b

4=-7+b

Add 7 to both sides

b=11

Therefore the equation is:

y=\frac{7}{2}x+11 (note that the fraction is positive since the two negatives cancel out)

4 0
3 years ago
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