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Ahat [919]
3 years ago
10

In a grade 11 class, 40% of the students are taking Geography, 30% are taking History and 10% are taking both. If 40 students ar

e enrolled in the grade 11 class, how many students are taking neither Geography or History?
Mathematics
1 answer:
jok3333 [9.3K]3 years ago
3 0

I put the wrong answer

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write and equation in slope intercept form for the following scenario. andy’s rental car charges an initial fee of $20 plus an a
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y = 30x + 20

Step-by-step explanation:

y = mx + b

find b

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m=30

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A mechanic charges $20.00 an hour, h for labor plus parts. If the parts cost $217.00, write a linear equation that will find the
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2 years ago
4) A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is
lisov135 [29]

Answer:

l=0.1401P\\

w =0.2801P

where P = perimeter

Step-by-step explanation:

Given that a window is in the form of a rectangle surmounted by a semicircle.

Perimeter of window =2l+\pid/2+w

P= 2l+3.14 (w/2)+w

Or P = 2l+2.57w\\l = \frac{P-2.57w}{2}

To allow maximum light we must have maximum area

Area = area of rectangle + area of semi circle where rectangle width = diameter of semi circle

A=lw +\pi \frac{w^2}{8}

A=lw +\pi \frac{w^2}{8}\\A=w*\frac{P-2.57w}{2}+0.3925w^2\\2A= Pw-2.57w^2+(0.785w^2)\\2A' = P-5.14w+1.57 w\\2A" =-5.14+1.57

Hence we get maximum area when i derivative is 0

i.e. P-5.14w+1.57 w=0\\3.57w =P\\w = \frac{P}{3.57} =0.2801P

l = \frac{P-2.57w}{2}\\l = 0.1401P

Dimensions can be

l=0.1401P\\w =0.2801P

5 0
3 years ago
the cylinder shaped containing 3 tennis balls is sold at the local sporting goods store the canister has a radius of 1.35 and he
sdas [7]
Need more to answer don’t get payed enough
5 0
3 years ago
Can someone help me ASAP
lianna [129]

Answer:

D. 1/5^15

Step-by-step explanation:

When an exponent is negative you need to get the reciprocal to make it positive.

3 0
3 years ago
Read 2 more answers
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