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nikitadnepr [17]
3 years ago
12

WHATS THE AREA?? PLEASE HELP!

Mathematics
1 answer:
pentagon [3]3 years ago
8 0
(0.5*10*18) + (0.5*6*18)
= 54 + 90
= 144 square units
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PLEASE PLEASE HELP ME OUT! But i ask that you explain how you got your answer and not just give the answer.
rjkz [21]

ok so first we would do the function d(x) = 3(8)+2

which when solved turns out to be 26

we would then do the function h(x) = 2(26) +7

which when solved turns out to be 59

so he would need 59 dollars for the donuts

6 0
3 years ago
Three classes. Of third graders are going to the zoo. Ms. Noels class has 10 students. Mr. Grubbs class has 9 students, and Ms.
liq [111]

Answer:

If the children divide evenly onto 3 buses, there will be 11 children on each bus

Step-by-step explanation:

Add all 3 classes to ind total amount of students

Ms. Noels class has 10 students

Mr. Grubbs class has 9 students

Ms. Ackerman's class has 14 students

<u>Total Students:</u> 10 students + 9 students + 14 students

33 total students

Dividing 33 students in 3 busses is 33 / 3 which equals 11

4 0
2 years ago
At a university, 60% of the 7,400 students are female. The student newspaper reports the results of a survey of a random sample
omeli [17]

Given Information:

Population mean = p  = 60% = 0.60

Population size = N = 7400

Sample size = n = 50

Required Information:

Sample mean = μ = ?

standard deviation = σ = ?

Answer:

Sample mean = μ = 0.60

standard deviation = σ = 0.069

Step-by-step explanation:

We know from the central limit theorem, the sampling distribution is approximately normal as long as the expected number of successes and failures are equal or greater than 10

np ≥ 10

50*0.60 ≥ 10

30 ≥ 10 (satisfied)

n(1 - p) ≥ 10

50(1 - 0.60) ≥ 10

50(0.40) ≥ 10

20 ≥ 10  (satisfied)

The mean of the sampling distribution will be same as population mean that is

Sample mean = p = μ = 0.60

The standard deviation for this sampling distribution is given by

\sigma = \sqrt{\frac{p(1-p)}{n} }

Where p is the population mean that is proportion of female students and n is the sample size.

\sigma = \sqrt{\frac{0.60(1-0.60)}{50} }\\\\\sigma = \sqrt{\frac{0.60(0.40)}{50} }\\\\\sigma = \sqrt{\frac{0.24}{50} }\\\\\sigma = \sqrt{0.0048} }\\\\\sigma =  0.069

Therefore, the standard deviation of the sampling distribution is 0.069.

4 0
2 years ago
Solve the inequalities by graphing. Select the correct graph. y&gt; X y&lt;-X​
Greeley [361]

Answer:

i think is y>X

Step-by-step explanation:

6 0
3 years ago
What is 8 3/4 ÷ 2 7/8 (show ur work)
xxMikexx [17]

Answer:

<em><u>see</u></em><em><u> </u></em><em><u>below</u></em><em><u>:</u></em><em><u>-</u></em>

Step-by-step explanation:

\displaystyle{8 \frac{3}{4} \div 2 \frac{7}{8}  }

  • Convert the mixed fractions into improper fractions.

\displaystyle{ \frac{8 \times 4 + 3}{4} \div  \frac{8 \times 2 + 7}{8}  }

\displaystyle{ \frac{32 + 3}{4}  \div  \frac{16 + 7}{8} }

\displaystyle{ \frac{35}{4} \div  \frac{23}{8}  }

\displaystyle{ \frac{35}{4}  \times  \frac{8}{23} }

\displaystyle{ \frac{35}{ \cancel4}  \times  \frac{ \cancel8 {}^{2} }{23} }

\displaystyle{ \frac{35  \times 2}{23} }

\displaystyle{ \frac{70}{23} }

\displaystyle{3 \frac{1}{23} }

6 0
2 years ago
Read 2 more answers
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