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Svet_ta [14]
3 years ago
10

In the regression equation y = -1.2x + 102.45, x represents the number of cloudy school days and y represents the percent of sch

ool attendance on those days. Predict the per cent of school attendance during a month with 18 cloudy days. A) 78.52% B) 80.85% C) 90.36% D) 93.47%
Mathematics
1 answer:
MAVERICK [17]3 years ago
4 0

Answer:

B.80.85%

Step-by-step explanation:

The equation shows that the percent of school attendance depends on cloudy days, in a negative way, which means that the more cloudy days, the less the percentage of students that go to school.

  • Particular, when there are 18 cloudy days, x takes a value of 18, x=18,
  • This means that y= -1.2 (18) + 102.45 which equals 80.85%.

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Answer:

$3.15

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We start by dividing 4.5 by 100,(.045) to find what 1 percent is, once we have that we multiply by 30 (1.35)and get that and subtract it from 4.5

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Solve for X-4 1/6 = 9 1/3
Gala2k [10]

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Add 4 1/6 to each side

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3 years ago
A class has 9 boys and 15 girls. What is the ratio in simplest form that compares number of boys to total number of students
jek_recluse [69]

Answer:

3  :  8

Step-by-step explanation:

9 boys + 15 girls = 24                                                                                                     Ratio is boys to total number of students                                                                         =          boys  :   total.no                                                                                                 =             9    :      24                                                                                                   You simplify=  9 ÷ 3= 3       and      24 ÷ 3 = 8                                                        <u>Answer</u>                                                                                                                          = boys  :  total.no                                                                                                            =    3    :     8

6 0
3 years ago
Find all real solutions of the equation by factoring. x2 = 5(x + 210)
anzhelika [568]

The real solution of the given equation by factoring x² = 5(x + 210) will be -30 and 35.

<h3>What are the roots of an equation?</h3>

The roots of an equation are the solution of that equation since an equation consists of hidden values of the variable to determine them by different processes and then the resultant is called roots.

As per the given equation,

x² = 5(x + 210)

x² = 5x + 1050

x² - 5x - 1050 = 0

x² - 35x + 30x - 1050 = 0

x(x - 35) + 30(x - 35) = 0

(x + 30)(x - 35) = 0

x = -30 and x = 35

Hence "The real solution of the given equation by factoring x² = 5(x + 210) will be -30 and 35".

To learn more about the roots of equations,

brainly.com/question/12029673

#SPJ1

8 0
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