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3 years ago

How do you solve. Surface. Areas

Mathematics

2 answers:

lara31 [8.8K]3 years ago

5 0

if it's over rectangular prism you use the formula 2 (l×w) +2(l×h)+2 (w×h)

shutvik [7]3 years ago

3 0

A=2(wl+hl+hw) rectangular prism

A=2πrh+2πr^2 cylinder

A=4πr^2 sphere

hope this helps

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Identify an equation in point-slope form for the line parallel to y=-2/3x+8 that

UNO [17]

Answer:

$\large\boxed{y+5=\dfrac{2}{3}(x-4)}$

Step-by-step explanation:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

m - slope

Parallel lines have the same slope.

We have the equation in the slope-intercept form (y = mx + b)

$y=-\dfrac{2}{3}x+8\to m=\dfrac{2}{3}$

Put to the point-slope equation value of the slope and the coordinates of the point (4, -5):

$y-(-5)=\dfrac{2}{3}(x-4)\\\\y+5=\dfrac{2}{3}(x-4)$

7 0

2 years ago

If you drive 9hours and 465 kilometers how long would it take you to drive 768 kilometers

romanna [79]

I think it would be 13 hours possibly

8 0

3 years ago

James is building a sandbox with a width of 4.8 feet and a length of 7.7 feet. ABOUT how much wood will James need to buy to con

4vir4ik [10]

Answer:

it is 25 ft

Step-by-step explanation:

you just add 7.7+7.7+4.8+4.8 to get 25

8 0

3 years ago

Read 2 more answers

Marcos purchased a sail boat for $56,900. He anticipates each year the boat will decrease in value by 8.1% from the previous yea

Varvara68 [4.7K]

Answer: $56,900\left( 0.919\right)^x$

Step-by-step explanation:

Given

Marcos purchased a sailboat for $\$56,900$

Each year the boat will decrease in value by $8.1\%$

After 1 year it is

$\Rightarrow 56,900-56,900\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\\$

after another year it becomes

$\Rightarrow 56,900\left( 1-0.081\right)-56,900\left( 1-0.081\right)\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\cdot \left( 1-0.081\right)\\\Rightarrow 56,900\left( 1-0.081\right)^2$

After $x$ years it is

$\Rightarrow 56,900\left( 1-0.081\right)^x$

$\Rightarrow 56,900\left( 0.919\right)^x$

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2 years ago

The ratio of red pens to blue pens in a package is 2:5. If there are 35 blue pens in the package, how many red pens are in t

prisoha [69]

Answer:

10 red pens

Step-by-step explanation:

6 0

2 years ago