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2 years ago

Can someone plz help me out with this I will really appreciate it no links plz

Mathematics

2 answers:

Olin [163]2 years ago

5 0

Answer:

Step-by-step explanation:

1) use a proportion to find how many students chose pizza

30 : 100 = x : 80

x = (80 x 30)/100 = 24

2) use a proportion to find how many students chose salad

10 : 100 = x : 80

x = (80 x 10)/100 = 8

3) solve the question

24 - 8 = 16

Mars2501 [29]2 years ago

4 0

Answer:

12 STUDENTS CHOSE HAMBURGERS

24 STUDENTS CHOSE PIZZA

16 STUDENTS CHOSE SANDWHICHES

20 STUDENTS CHOSE HOT DOGS

8 STUDENTS CHOSE SALAD

24 = PIZZA

8 = SALAD

8 - 24 = 16 SO B

i dont know why everything i capitilized sorry haha

Step-by-step explanation:

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The graphs of the equation y = 4x + 1 and y - kx = 10 are perpendicular when k = _______?

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Answer:

$k=-\frac{1}{4}$

Step-by-step explanation:

we have

Line 1

$y=4x+1$

Equation in slope intercept form

The slope is equal to

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Line 2

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$y=kx+10$

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The slope is equal to

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we know that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of the slopes is equal to -1)

$m_1*m_2=-1$

substitute

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Answer:

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Step-by-step explanation:

angles 2 and 65° are equal

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Step-by-step explanation:

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