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creativ13 [48]
3 years ago
15

2. A researcher collected data about the favorite car color of a particular population. He asked 250 people about their favorite

vehicle color and the survey revealed the following: 32% of people said blue, 24% of people said white, 20% of people said red, 18% of people said black, and 4% of people said silver.
(a) How many people said their favorite vehicle color was red? Explain.
(b) How many more people said their favorite vehicle color was blue compared to those who said white? Explain.
(c) How many people said their favorite vehicle color was either black or silver? Explain.
Answer:
Mathematics
1 answer:
lubasha [3.4K]3 years ago
8 0
A) 55 people said their favorite vehicle color is red

B) 80 people said their favorite vehicle color was blue while 60 people said their favorite vehicle color was white

C) 45 said their favorite vehicle color was black while 10 people said their favorite vehicle color was silver
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The length of a rectangle is (x + 1) cm and its width is 5cm less than its length.
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Answer:

a) the area of a square is in terms of x is

(x+1)^2 centimeter square

b)The length of the rectangle is l = (x+1)

                                       l = 7+1 =8 cm

The width of the rectangle is w = [(x+1)-5]

                                     w = (7+1)-5 =3 cm

Step-by-step explanation:

a) the area of a square is in terms of x is

 area of square is l^{2} = (x+1)(x+1)

                                 = (x+1)^2

b)  Given length is  l = (x+1) cm and

the width is 5 cm less than its length.

so we have take width is w = (x+1)-5 cm

Given area of triangle is  24 cm

Area of rectangle = length X width

24  =  (x+1)(x+1 -5 )

now simplification 24 = (x+1)^2 - 5 (x+1)

apply (a+b)^2 = a^2+2 a b+b^2

x^2+2 x+1-5 x-5 =24

x^2 -3 x -4-24=0

x^{2} -3 x -28 =0

now find factors of 28  = 7 X 4 is  

x^{2} -7 x+4 x-28=0

x(x-7)+4(x-7)=0

(x+4)(x-7)=0

x = -4 and x=7

there fore you have to choose x = 7

The length of the rectangle is l = (x+1)

                                       l = 7+1 =8

The width of the rectangle is w = [(x+1)-5]

                                     w = (7+1)-5 = 3

<u>Verification:-</u>

Given area of rectangle  = 24 = 8 X 3

                                           24 =24

so we can not choose x=-4

we have to choose x =7 only

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Answer:

3 is the right one

Step-by-step explanation:

Simple math you know

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A line with a slope of -4 passes through the point
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Answer:

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Step-by-step explanation:

m = -4

using (-6,2)

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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9. log(2)=a, log(3)=b, then log(36)=______

log(36) = log(6*6) = log(6) + log(6)

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log(36) = log(3*2) + log(3*2)

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