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3 years ago

PLease help me with geometry

Mathematics

1 answer:

RoseWind [281]3 years ago

4 0

A. is given, B is RQ, C. is line PQ parallel line RS

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Write the number with the same value as 28 tens

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The number with the same value as 28 tens is 280.

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3 years ago

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Solve the system of linear equations by substitution. Check your solution.

bearhunter [10]

1. X+2=3x-4
6=2x
x= 3

2. y= 8-x
8-x = 3x+4
4= 4x
X= 1

3. -2x +3(2x+7)=9
-2x + 6x + 21 = 9
4x = -12
x= -3

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3 years ago

2. A newspaper started an online version of its paper 14 years ago. In a recent presentation to stockholders, the lead marketing

Bas_tet [7]

Answer:

A. The lead executive's statement says that because the company uses online ads, the revenues have more than doubled. This can be seen on the graph because the Online ad revenue increases while the Printed ad revenue decreases

B. The approximate year that the two ad revenues were equal is halfway through the 7th year or at year 7.5

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3 years ago

Find the area of the surface generated by revolving the curve x=\frac{y^3}{2} from 0 \leq y \leq 3 about the y-axis.

Katena32 [7]

<span> The surface area of a curve y = f(x) generated by revolving about the x-axis on the interval [a,b]

= 2π*∫y*√(1 + (dy/dx)² dx from a to b

In this problem:

dy/dx = 3x²/4

The surface area generated by revolving the curve y = x^3/4 on the interval [0,1] about the x-axis:

= 2π*∫(x^3/4)*√(1 + 9x^4/16) dx from 0 to 1

= π/8*∫x^3*√(16 +9x^4) dx from 0 to 1

u = 16 + 9x^4

du/36 = x^3 dx

= π/288*∫√u du from 16 to 25

= π/288[2/3*u^(3/2) eval. from 16 to 25]

= π/288[250/3 - 128/3]

= π/288[122/3] = 61π/432 </span>

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4 years ago

Edward was running errands on his bike first to be like from his house to the post office to pick up a package the post office i

Karo-lina-s [1.5K]

Answer:

Edward drove altogether of 16.1 miles.

Step-by-step explanation:

Given:

Edward was Running around on his bike.

Distance from home to post office = $4 \frac{4}{5} \ miles$

$4 \frac{4}{5} \ miles$ can be Rewritten as $4.8 \ miles$

Distance from home to post office = $4.8 \ miles$

Now Given:

Distance from Post office to market = 3.25 miles.

Now we will calculate Distance from Home to market.

Distance from Home to market can be calculated by adding Distance from home to post office and Distance from Post office to market.

Framing in equation form we get;

Distance from Home to market = $4.8+3.25 = 8.05\ miles$

Also Given:

his mother picked him up at the market and drove him home.

We need to find the total miles Edward drive altogether.

total miles Edward drive altogether will be equal to Sum of Distance from Home to market and Distance from market to home.

framing in equation form we get;

Total Distance Edward drove = $8.05+8.05 = 16.1\ miles$

Hence Edward drove altogether of 16.1 miles.

5 0

3 years ago