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Solnce55 [7]
3 years ago
10

The table below shows data for a class's mid-term and final exams:

Mathematics
1 answer:
kari74 [83]3 years ago
4 0
I think it’s the 81-78
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the Andersons kept track of the time they spent watching television. Part A wich bar diagram represents the number of hours the
DENIUS [597]

Part A:

Part B:

\begin{gathered} 4\frac{5}{6}=\frac{29}{6} \\ 3\frac{4}{6}=\frac{11}{3} \\ so\colon \\ \frac{29}{6}+\frac{11}{3}=\frac{17}{2}=8\frac{3}{6} \end{gathered}

Part C:

\begin{gathered} 3\frac{1}{6}=\frac{19}{6} \\ 2\frac{3}{6}=\frac{15}{6} \\ so\colon \\ \frac{29}{6}+\frac{11}{3}+\frac{19}{6}+\frac{15}{6}=\frac{85}{6}=14\frac{1}{6} \end{gathered}

Part D:

\frac{17}{2}-\frac{17}{3}=\frac{17}{6}=2\frac{5}{6}_{}

4 0
1 year ago
A total of 729 students participate in a school pep rally event. If every 30 minutes, 2/3 of the students leave, after 2 hours,
trapecia [35]

There will be 9 students left at the prep rally after 2 hours.

After 30 minutes

  • Total Number of students = 729
  • 2/3 of 729 = 486
  • Number of students left = 729 - 486 = 243

After 1 hour:

  • 2/3 of 243 = 162
  • Number of students left = 243 - 162 = 81

After 1 hour 30 minutes :

  • 2/3 of 81 = 54
  • Number of students left = 81 - 54 = 27

After 2 hours :

  • 2/3 of 27 = 18
  • Number of students left = 27 - 18 = 9

Therefore, the Number of students left after 2 hours will be 9.

Learn more : brainly.com/question/18112348

5 0
3 years ago
Last year, 7600 athletes finished a marathon in Lakeside, This year there were 6156 athletes finishing. What is the percent decr
NemiM [27]

Answer:

6156/7600=0.81   1-0.81= 0.19   THERE IS A 0.19% decrease in the number of finishers

Brainliest?

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
NEED HELP ASAP!!!!! ILL NAME THE BRAINIEST!!!!!
gladu [14]
It's D. a, b, and c refers to the coefficients of the numbers.
7 0
3 years ago
Read 2 more answers
Suppose a deposit of $ 2 , 000 in a savings account that paid an annual interest rate r (compounded yearly) is worth $ 2 , 209 a
arsen [322]

Answer:

5.1% (nearest tenth)

Step-by-step explanation:

<u>Annual Compound Interest Formula</u>

\large \text{$ \sf A=P\left(1+r\right)^{t} $}

where:

  • A = final amount
  • P = principal amount
  • r = interest rate (in decimal form)
  • t = time (in years)

Given:

  • A = $2,209
  • P = $2,000
  • t = 2 years

Substitute the given values into the formula and solve for r:

\implies \sf 2209=2000\left(1+r\right)^{2}

\implies \sf \dfrac{2209}{2000}=(1+r)^2

\implies \sf 1.1045=(1+r)^2

\implies \sf \sqrt{1.1045}=1+r

\implies \sf r = \sqrt{1.1045}-1

\implies \sf r = 0.05095194942...

\implies \sf r = 5.095194942...\%

Therefore, the annual interest rate is 5.1% (nearest tenth)

6 0
2 years ago
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