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4 years ago

Can someone please help me? This is due today :(

Mathematics

2 answers:

Yuki888 [10]4 years ago

8 0

Answer:

$- 10 \sqrt{2}$

Step-by-step explanation:

$- \sqrt{200}$

$- \sqrt{ {10}^{2} \times 2 }$

$- \sqrt{ {10}^{2} } \times \sqrt{2}$

$- 10 \sqrt{2}$

Kipish [7]4 years ago

3 0

I could depends if the vid loads

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The cost of 250 ft of cable is 2950 what would 40 ft cost

kotegsom [21]

Use ratio and proportion:

$29.50 is to 250 ft. as how much is to 40 ft.

29.5 / 250 = x / 40

x = 40(29.5) / 250

x = 1180 / 250

x = 4.72

40 ft. would cost $4.72

6 0

4 years ago

Read 2 more answers

The total surface area of a hemisphere is 45 <img src="https://tex.z-dn.net/?f=%5Cpi%5Cp" id="TexFormula1" title="\pi\p" alt=

rjkz [21]

Answer:

The volume of the hemisphere

V = 121.33086 cubic centimeter

Step-by-step explanation:

Step(i):-

Given that the total surface area of a hemisphere = 45π cm²

The total surface area of a hemisphere = 3π r²

Equating

3π r² = 45π

$r^{2} = \frac{45}{3} =15$

r = $\sqrt{15} = 3.87$

The radius of the sphere 'r' = 3.87

Step(ii):-

The volume of the hemisphere

$V = \frac{2}{3} \pi r^{3}$

$V = \frac{2}{3} \pi (3.87)^{3}$

we know that π = 3.14

$V = \frac{2}{3} (3.14) (3.87)^{3}$

V = 121.33086 cubic centimeter

7 0

3 years ago

Which variable is discrete?

svetoff [14.1K]

We want to see which one of the given variables is a discrete variable, the correct option is "number of pockets inside jacket"

<h3>What is a discrete variable?</h3>

A discrete variable is a variable that can't take some values in a given interval where it is defined, in contrast to a continuous variable, which can take all the values of the interval.

For example, the "length of a jacket" would be considered a continuous variable, as the length can take any measure you want.

Similar for the weight and the size of the jacket pocket in square inches, these are continuous variables.

But the remaining option is not continue, the number of pockets inside the jacket can only be an integer, then there are values (like 1.3) that can't represent the number of pockets inside the jacket, thus, this is a discrete variable.

So the correct option is the first one: "number of pockets inside jacket"

If you want to learn more about discrete variables, you can read:

brainly.com/question/14486464

6 0

2 years ago

What are the coordinates of the y-intercept of the line who's equation is 12x + 13y =8???

Ierofanga [76]

Answer:

y-intercept = (0, $\frac{8}{13}$ ).

Step-by-step explanation:

Given the linear equation in standard form, 12x + 13y = 8:

We must transform this equation into slope-intercept form to make it easier to determine the coordinates of the y-intercept.

12x + 13y = 8

Subtract 12x from both sides:

12x + 13y - 12x = - 12x + 8

13y = - 12x + 8

Next, divide both sides of the equation by 13 to solve for y:

$\frac{13y}{13} = \frac{-12x + 8}{13}$

$y = \frac{-12x + 8}{13}$ or $y = -\frac{12}{13} x + \frac{8}{13}$

Next, to determine the y-intercept, we must set x = 0 (because the y-intercept is the point where the graph of the linear equation crosses the y-axis).

Let x = 0:

$y = -\frac{12}{13} x + \frac{8}{13}$

$y = -\frac{12}{13} (0) + \frac{8}{13}$