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forsale [732]
3 years ago
5

BRAINLIST ANSWER. Mike installed the window shown. How many square feet is the window? Round to the nearest tenth. Use 3.14 for

\pi.

Mathematics
2 answers:
bazaltina [42]3 years ago
8 0

Answer:

3.09 square feet

Step-by-step explanation:

1.5/2= 0.75

(3.14)(0.75)^2= 1.76625/2=

0.09

1.5×2=3

3+0.09=3.09ft^2

Vitek1552 [10]3 years ago
7 0
We see that is a rectangle+1/2 circle

area of circle=pir^2

area of rectangle=LW or LH or something

aera of recctangle=2 times 1.5=3

area of half cirlce=1/2 times 3.14 times 1.5^2=1.57 times 2.25=3.5325

add
3+3.5325=6.5325 ft^2



area=6.5325 ft^2
round if nececary


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The table displays the frequency of scores for a calculus class on an exam. The mean of the exam scores is 3.5. Score 1 2 3 4 5
vladimir1956 [14]

Answer:

f=11

Mode=4

Median=4

Explanation:

We are given that

a.Mean of the exam score,\bar x=3.5

Score(x)   frequency   C.F

1                  1                 1

2                  3                4

3                  f                 15(4+f=4+11)

4                  13               28

5                   4               32

\sum f_i=1+3+f+13+4=21+f

\sum f_ix_i=1(1)+2(3)+3(f)+4(13)+5(4)=1+6+3f+52+20=79+3f

(\bar x)=\frac{\sum f_ix_i}{\sum f_i}

Using the formula

3.5=\frac{79+3f}{21+f}

73.5+3.5f=79+3f

3.5f-3f=79-73.5

0.5f=5.5

f=\frac{5.5}{0.5}=11

b.Mode:The number which is repeat most times .

4 repeat most times

Hence, mode of all exam scores=4

N=32

N is even

Median=\frac{(\frac{n}{2})^{th}+(\frac{n}{2}+1)^{th}}{2}

Median=\frac{16th+17th}{2}=\frac{4+4}{2}=\frac{8}{2}=4

7 0
3 years ago
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