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3 years ago

Can someone help me plz?

Mathematics

1 answer:

Hunter-Best [27]3 years ago

7 0

Answer: ight I gotchu. It’s a lot tho so bare with me. v = pi10^2 (20) = 6283; v=4/3pi r^3 4/3pi 10^3 = 4188 which is approximately 10,472

Step-by-step explanation:

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Joe buys 2 shirts for $18.50 each and a belt for $12.36. He pays tax at a rate of 5.5% on his purchase. How much tax does he pay

kirill115 [55]

Answer:37$ for the shirt Sales tax: $2.04

Cost/Price before ST: $37.00

Total Cost/Price including ST: $39.04

for the belt

Sales tax: $0.68

■ Cost/Price before ST: $12.36

■ Total Cost/Price including ST: $13.04

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A line with a slope of 0 passes through the point (9,5). What is its equation in slope-intercept form?

shepuryov [24]

Answer:

y = 5

Step-by-step explanation:

Any line with a slope of 0 is horizontal, represented by the equation y = a number. That number is the y-value of all the points the line intersects.

We know that that the line intersects (9,5). So, take the y-value of that point and write it into the equation of y = a number. Thus, the answer is y =5.

8 0

3 years ago

I WILL MARK FIRST BRAINLIEST! I leave a thanks too! 0 = -2x^2 - 7x -1 Solve using quadratic formula PLEASEEEEEE I need the answe

slamgirl [31]

Here,

2x^2 + 7x + 1 = 0

given,

a = 2

b = 7

and c = 1

From formula,

x = (-b+-√b^2-4ac) / 2a.

We get,

x = -7/4 ± √(41)/4 Ans.

4 0

3 years ago

Robin and Meg are traveling from New York to Florida, and plan to stop at three different campgrounds along the way. After choos

matrenka [14]

You are correct. For each of the three possibilities for their second day, there are two possibilities for the third day.

The total number of possibilities is 3*2 = 6.

6 0

3 years ago

A street light is mounted at the top of a 15-ft-tall pole. A man 6 ft tall walks away from the pole with a speed of 4 ft/s along

mina [271]

Answer:

The tip of the man shadow moves at the rate of $\frac{20}{3} ft.sec$

Step-by-step explanation:

Let's draw a figure that describes the given situation.

Let "x" be the distance between the man and the pole and "y" be distance between the pole and man's shadows tip point.

Here it forms two similar triangles.

Let's find the distance "y" using proportion.

From the figure, we can form a proportion.

$\frac{y - x}{y} = \frac{6}{15}$

Cross multiplying, we get

15(y -x) = 6y

15y - 15x = 6y

15y - 6y = 15x

9y = 15x

y = $\frac{15x}{9\\} y = \frac{5x}{3}$

We need to find rate of change of the shadow. So we need to differentiate y with respect to the time (t).

$\frac{dy}{t} = \frac{5}{3} \frac{dx}{dt}$ ----(1)

We are given $\frac{dx}{dt} = 4 ft/sec$ . Plug in the equation (1), we get

$\frac{dy}{dt} = \frac{5}{3} *4 ft/sect\\= \frac{20}{3} ft/sec$

Here the distance between the man and the pole 45 ft does not need because we asked to find the how fast the shadow of the man moves.

7 0

3 years ago