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Nadya [2.5K]
3 years ago
9

Can anyone please help me with this question 61

Mathematics
1 answer:
tamaranim1 [39]3 years ago
4 0
The answer is b hope i help
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1.4

Step-by-step explanation:

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In a circle, I 90° sector has an area of 36 pi inches squared what is the radius of the circle
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A software designer is mapping the streets for a new racing game. All of the streets are depicted as either perpendicular or par
MariettaO [177]

Answer:

B.   -1.5x − 3.5y = -31.5

Step-by-step explanation:

You forgot to provide the reference image which is essential to answer the question, but I managed to find it... and attach it to my answer.

In the given equation for AB, if we place the y term on the left and x term on the right, we see the slope of that line is 7/3 (y = (7x - 21.5)/3 ==> 7/3x).

We see on the image that the line PQ is perpendicular to AB.  That means that its slope is -3/7.

If we quickly check the slopes of each of the possible answers...

A. -3x + 4y = 3 ----> 4y = 3x - 3 ==> y = (3x-3)/4 => slope = 3/4

Not what we're looking for.

B. -1.5x - 3.5y = -31.5 ==> 3.5y = -1.5x + 31 ===> y = (-1.5x +31)/3.5

that gives us a slope of -1.5/3.5... We can simplify it... -3(0.5)/7(0.5) = -3/7

Exactly as predicted.

Since we have the point P (7,6), we can enter it in the equation to verify:

-1.5x - 3.5y = -31.5

-1.5 (7) - 3.5 (6) = -10.5 - 21 = -31.5  --- Verified

C. 2x + y = 20 ==> y = 20 - 2x ===> slope is -2, not what we want.

D. -2.25x + y = -9.75 ==> y = 2.25x - 9.75 ==> slop is 2.25 cannot be it.

5 0
3 years ago
A shipment to a warehouse consists of 4,500 MP3 players. The manager chooses a random sample of 50 MP3 players and finds 4 that
kirill [66]

Answer:

360

Step-by-step explanation:

you have to multiply 50 by 90 to get 4,500, then you multiply the number of defective ones by the same number.

8 0
3 years ago
The area of a circle is 16 cm What is the circle's circumference?
alukav5142 [94]
I believe that is 8 cm
8 0
3 years ago
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