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3 years ago

I’m confused on this one

Mathematics

1 answer:

matrenka [14]3 years ago

4 0

Take a look at triangle OFG, whose hypotenuse is 13 and whose longer side is 12. Its shorter side is 5, via the Pythagorean Theorem. Thus, the width of the trapezoid is 5.

Then the area of the trapezoid is

A = (average of the lengths of the trapezoid)(width of trapezoid)

30+ 40

= -------------- * 5 = 35*5= 175 square units.

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Please answer this correctly

Vsevolod [243]

Answer:

1/7, 14.3%

Step-by-step explanation:

Since out of the 7 numbers, only one of them is 3

Therefore only 1/7 meet the standards, in percent form it is 14.3%

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3 years ago

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Express the polar coordinates (2,3pi/4) as Cartesian coordinates

Rus_ich [418]

The Cartesian equivalent of the polar coordinates (r, theta) is

(r cos t, r sin t), where t = theta.

So, (2, 3pi/4) becomes

(2 cos(3pi/4), 2 sin(3pi/4))

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Answer: (-sqrt{2}, sqrt{2})

Done.

Note: sqrt = square root for short.

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3 years ago

The pair of polygons is similar. Find the missing side measure. A) 7 B) 9 C) 13.5 D) 24

arlik [135]

Answer:

Step-by-step explanation:

I did the math

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3 years ago

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2 2 7 :(0.6x)= 4 21 :0.25<br><br> lol my phones taken away until i finish this question help

o-na [289]

Answer:

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Step-by-step explanation:

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3 years ago

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What is the constant of proportionality in the graph below? (answer must be simplified fraction) PLEASE HELP I WILL MAKE U BRAIN

Pepsi [2]

Answer:

The constant of proportionality is $\frac{9}{2}$

Step-by-step explanation:

The constant of proportionality is the ratio between two directly proportional quantities

If x and y are in directly proportion, then $\frac{y}{x}=k$ , where k is the constant of proportionality.

The direct proportion can be represented by a line whose equation is y = kx, where k is the slope of the line.

<em>To find the constant of proportionality from the given graph choose a point on the line and substitute x and y in the equation of the proportionality by the coordinates of the point.</em>

∵ Point (4, 18) lies on the line

∴ x = 4, y = 18

∵ The equation is y = kx

→ Substitute x by 4 and y by 18

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∴ 18 = 4k

→ Divide both sides by 4 to find k

∴ $\frac{18}{4}=\frac{4k}{4}$

∴ $\frac{18}{4}=k$

→ Simplify the fraction by dividing up and down by 2

∴ $\frac{9}{2}=k$

∴ The constant of proportionality is $\frac{9}{2}$

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3 years ago