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4 years ago

Find the mass of ether which can be put into a beaker holding 130ml

Mathematics

1 answer:

stiks02 [169]4 years ago

7 0

Put it in a 130ml beaker, get your ml value and subtract it by 130ml.

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Pizza-By-The-Slice sells 7 slices every 10 minutes on average. How many

Dvinal [7]

I think you’re answer is 42 slices of pizza.

the way i worked it out is by finding out how many minutes are in an hour (60 mins). after that i divided it by 10(mins), which would have gotten me 6. therefore i multiplied 7 x 6 which gave me 42.

3 0

3 years ago

Read 2 more answers

Please HELP im posting a lot but the points will go up!

Nikolay [14]

Answer:

5.6

Step-by-step explanation:

Intersecting Chords Formula:

(segment piece) x (segment piece) = (segment piece) x (segment piece)

3.2 * x= 4.8 * 1.6

Divide each side by 3.2

x =7.68/3.2

x=2.4

We want to find AC

AC = 3.2 +x

AC = 3.2+2.4

AC =5.6

7 0

3 years ago

Lois thinks that people living in a rural environment have a healthier lifestyle than other people. She believes the average lif

Pie

Answer: Yes, this sample provide evidence that people living in rural communities live longer than 77 years.

Step-by-step explanation:

Since we have given that

Average lifespan in the USA = 77 years

We need to check whether the people living in rural communities live longer than 77 years.

So, Hypothesis would be

$H_0:\mu=77\\\\H_a:\mu>77$

Since n = 12

$\bar{x}=81.03\\\\s=1.53$

since n <30 so, we will use t test.

So, the test statistic value is given by

$t=\dfrac{\bar{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\\\t=\dfrac{81.03-77}{\dfrac{1.53}{\sqrt{12}}}\\\\\\t=\dfrac{4.03}{0.4416}\\\\t=9.125$

degrees of freedom = df = n-1 = 12-1 =11

At 95% significance level , t = 1.796

Since, 1.796< 9.125

So, we will reject the null hypothesis.

Hence, Yes, this sample provide evidence that people living in rural communities live longer than 77 years.

5 0

4 years ago

What is half of pi/8?

Pepsi [2]

Man, come on, you know this one.

Think about this for a second. It may seem a bit complicated to think of a half as an actual half.

Think of half as 1/2.

Now what is 1/2 * pi/8.

It is pi/16!

6 0

3 years ago

Convert to decimal form 5.23 multiply by 10 minus 8

Sloan [31]

Answer:

10.46

Step-by-step explanation:

I wasn't too sure what you meant by this but I solved it the best I could.

5.23(10-8)

5.23(2)

10.46

3 0

3 years ago