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3 years ago

If you were present 120 days out of 124 days what percent were you present

Mathematics

1 answer:

emmainna [20.7K]3 years ago

5 0

Answer:

~96.6

Step-by-step explanation:

120/124 is 30/31 or 60/62 or 96.6/99.82

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What is 901,050,000,000 in Scientific Notation?

ValentinkaMS [17]

Sientific notation is the number reduced to:

(a number more than one and less than 10) times 10^x

so in scientific notation
9.0105 times 10^11 or
9.0105e+11

7 0

3 years ago

On his way back, Thomas took the train. The distance travelled by the train is 328 miles. If it takes 5 1/8 hours to travel by t

Leona [35]

Answer:

Thomas travels <em>64 miles each hour</em>.

Step-by-step explanation:

Distance traveled by train = 328 miles

Time taken to travel by train = $5\frac{1}{8} hr \Rightarrow \frac{5 \times 8+1}{8} \Rightarrow \frac{41}{8} hr$

We know that speed can be formulate as:

$\text{Speed = } \dfrac{\text{Distance Travelled}}{\text{Time Taken}}$

Speed is equal the total distance traveled for the one unit time.

In our case, speed is total distance traveled in miles in 1 hour.

So, using above formula:

$\text{Speed = } \dfrac{328}{\dfrac{41}{8}}\\\Rightarrow 8 \times 8\\\Rightarrow 64\ miles/hour$

As per definition of Speed, Thomas travels <em>64 miles each hour</em>.

3 0

3 years ago

Roland was driving to campus but realized that his car is out of gas. He started driving around Syracuse looking for a gas stati

tester [92]

Answer:

Roland is right, he can be 95% sure that average gas prices have gone up since the same time last year.

Step-by-step explanation:

Let μ be average gas price around Syracuse.

Then hypotheses are:

$H_{0}:$ μ = $2.68

$H_{a}:$ μ > $2.68

Then test statistic can be calculated as:

z= $\frac{X-M}{\frac{s}{\sqrt{N} } }$ where

X is the Roland's calculated average gas prices of 50 gas stations ($2.74)

M is the average average gas prices in the entire of Syracuse last year

s is the standard deviation ($0.11)

N is the sample size(50)

Then z= $\frac{2.74-2.68}{\frac{0.11}{\sqrt{50} } }$ ≈ 3.86

Since P-value of test statistic ≈ 0.00006 <0.05 (significance level), we can reject the null hypothesis.

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4 years ago

What’s the square route of 6

tia_tia [17]

Answer:

square root of 6: 2.449

Step-by-step explanation:

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3 years ago

If the measure of DEF is 76, what is the measure of DE? 20pts

Evgen [1.6K]

If the problem looks like mine, the answer is 152.

3 0

3 years ago

Read 2 more answers