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soldier1979 [14.2K]

3 years ago

8

The temperature at 6:00 am was -12 degrees Fahrenheit. The temperature increased by 1/2 degree each hour for 6 hours. What was t

he temperature at noon?

1 answer:

Triss [41]3 years ago

6 0

Answer:

y = 1/2x -12

Step-by-step explanation:

You might be interested in

In the warehouse there is a stack of 7 crates. Each crate is 102/3 inches high. How many inches high is the stack

pickupchik [31]

Answer:

The stack is $\frac{224}{3}$ inches high.

Step-by-step explanation:

Given date:-

A stack of 7 crates means

1 stack=7 crates

Total number of crate=7

Height of 1 crate = $10\frac{2}{3}\ inches$

Height of 1 crate = $\frac{30+2}{3}$ inches

Height of 1 crate = $\frac{32}{3}$ inches

To find height of stack=?

Now,

Height of a stack = Height of 1 crate $\times$ Total number of crates

Height of a stack = $\frac{32}{3}\times7$

Height of a stack = $\frac{32\times7}{3}$

Height of stack = $\frac{224}{3}$ inches

Therefore the stack is $\frac{224}{3}$ inches high.

6 0

3 years ago

Miguel cut 1/4 from a round pie. Mariah cut a piece from the same pie with an angle measure of 60 degrees. Who cut the larger pi

MatroZZZ [7]

Answer:

Miguel

Step-by-step explanation:

Since the pie is round it is a circle, and all circles have 360 degrees in total. Miguel cut 1/4 of the pie and 1/4 x 360 = 90. 90 is greater than 60.

6 0

4 years ago

Read 2 more answers

The function A(b) relates the area of a trapezoid with a given height of 10 and

Natali5045456 [20]

The function of the trapezoid area is:

A(x)=(B+b)*h/2

Where B and b are the bases and h is the height.

With the given data: h=10 B and b =7 and x (it may vary which one is bigger)

-----------

So that function becomes:

A(x)=(7+x)*10/2

A(x)=(7+x)*5

----------

So if you want the inverse function, you have to operate to find x:

A(x)/5=7+x

A(x)/5-7=x

----------

So the new function is:

x(A)=A/5-7

6 0

4 years ago

A glass plummet weighs 14.35 g in air 5 points 11.40 g when immersed in water, and 8.95 g when immersed in sulfuric acid. Calcul

elena-s [515]

Answer:

0.865

Step-by-step explanation:

Specific gravity is a ratio of the weight of a substance to the weight of an equal volume of a substance chosen as a standard. The standard for liquid and solids is water while for gas is hydrogen.

Amount of displaced oil = 12.64 g — 9.12 g = 3.52 g

Amount of displaced water = 12.64 g — 8.57 g = 4.07 g

Specific gravity of oil = 3.52 g / 4.07 g = 0.865

6 0

3 years ago

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customer

AlladinOne [14]

Answer:

$4-2.326\frac{1}{\sqrt{100}}=3.767$

$4+2.326\frac{1}{\sqrt{100}}=4.233$

So on this case the 98% confidence interval would be given by (3.767;4.233)

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".

$\bar X=4$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=1$ represent the population standard deviation

n=100 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 0.98 or 98%, the value of $\alpha=0.02$ and $\alpha/2 =0.01$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.01,0,1)".And we see that $z_{\alpha/2}=2.326$

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

$4-2.326\frac{1}{\sqrt{100}}=3.767$

$4+2.326\frac{1}{\sqrt{100}}=4.233$

So on this case the 98% confidence interval would be given by (3.767;4.233)

4 0

3 years ago