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2 years ago

Pls HELP WITH THESE TWO QUESTIONS NO LINKS

Mathematics

2 answers:

Marta_Voda [28]2 years ago

7 0

Answer:

The answer to the first question is B.

The answer to the second question is C.

Amanda [17]2 years ago

4 0

Answer:

3: B or 1/4

4: C or 15%

Step-by-step explanation:

3: There are 8 letters in Geometry and 2 E's in the word so it would be 2/8, but then you would simplify it and you will get 1/4.

4: 0.85 in a percentage is 85%. So 85% that WILL rain.

100 - 85 = 15, thus there is a 15% probability it will NOT rain.

Hope that helps :)

You might be interested in

Ima need help on this one pls do quick

pshichka [43]

Answer:

Step-by-step explanation:

The area of the square is $5^2=25$ and the area of a single triangle is $\frac{1}{2}(5)(4)=10$ .

The total area is the square plus the 4 triangles $25+4(10)=65$

4 0

1 year ago

The output is four times the input

juin [17]

O=4i (is that was you were asking about)

edit: sorry that wasn't very detailed say if the input is 4 the output will be 16 or if the input is 100 the output will be 400. So mainly what ever the input is multiply it by 4.

I hope this helps :)

5 0

2 years ago

Using a metric line as taught in your lesson, convert the following metric measurement. (Remember to use the same number of sign

weqwewe [10]

Answer:

Option B.

Step-by-step explanation:

We need to express 505 kL in L.

Here, kL means kiloliter and L means liter.

We know that

1 kL = 1000 L

Using this conversion we can easily convert 505 kL in L.

Multiply both sides by 505.

505 × 1 kL = 505 × 1000 L

505 kL = 505,000 L

The value of 505 kL can be expressed as 505,000 L.

Therefore, the correct option is B.

4 0

2 years ago

Read 2 more answers

A realtor would like to create a 95% confidence interval for the average price of a house in Franklin County, Ohio. To accomplis

VMariaS [17]

Answer:

$320128-1.96\frac{50324}{\sqrt{529}}=315839.52$

$320128+1.96\frac{50324}{\sqrt{529}}=324416.48$

So on this case the 95% confidence interval would be given by (315839.52;324416.48)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X=320128$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=50324$ represent the population standard deviation

n=529 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$

Now we have everything in order to replace into formula (1):

$320128-1.96\frac{50324}{\sqrt{529}}=315839.52$

$320128+1.96\frac{50324}{\sqrt{529}}=324416.48$

So on this case the 95% confidence interval would be given by (315839.52;324416.48)

8 0

3 years ago

Which expression is equivalent to 7c +4 + 10c – 6?<br> 15<br> 15c<br> 17c - 2

slega [8]

Answer:

17c - 2

Step-by-step explanation:

Firstly, add the normal numbers together:

7c + 4 + 10c - 6

4 - 6 = -2

7c + 10c - 2

Now, the two numbers with a c value can be added together:

7c + 10c = 17c

This returns the answer:

17c - 2

Hope this helps!

5 0

2 years ago