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3 years ago

10

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

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