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Anna35 [415]
2 years ago
7

NEED HELP NOW...NEED CORRECT ANSWER...WILL MARK BRAINLIEST...

Mathematics
1 answer:
alexira [117]2 years ago
7 0
C. First person -hellobrains
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borrowed $1,300 from a credit union for 4 years and was charged simple interest at a rate of 2.95%. What is the amount of intere
stiv31 [10]

Step-by-step explanation:

1 300 × 2.95/100× 4 = $153.40

3 0
2 years ago
Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 75.6 Mbp
olga55 [171]

Answer:

a) 59.98

b) 2.99

c) 2.99

d) Significantly High

Step-by-step explanation:

Part a)

Highest speed measured = x = 75.6 Mbps

Average/Mean speed = \overline{x} = 15.62 Mbps

Standard Deviation = s = 20.03 Mbps

We need to find the difference between carrier's highest data speed and the mean of all 50 data​ speeds i.e. x - \overline{x}

x - \overline{x} = 75.6 - 15.62 = 59.98 Mbps

Thus, the difference between​ carrier's highest data speed and the mean of all 50 data​ speeds is 59.98 Mbps

Part b)

In order to find how many standard deviations away is the difference found in previous part, we divide the difference by the value of standard deviation i.e.

\frac{59.98}{20.03}=2.99

This means, the difference is 2.99 standard deviations or in other words we can say, the Carrier's highest data speed is 2.99 standard deviations above the mean data speed.

Part c)

A z score tells us that how many standard deviations away is a value from the mean. We calculated the same in the previous part. Performing the same calculation in one step:

The formula for the z score is:

z=\frac{x-\overline{x}}{s}

Using the given values, we get:

z=\frac{75.6-15.62}{20.03}=2.99

Thus, the Carriers highest data is equivalent to a z score of 2.99

Part d)

The range of z scores which are neither significantly low nor significantly​ high is -2 to + 2. The z scores outside this range will be significant.

Since, the z score for carrier's highest data speed is 2.99 which is well outside the given range, i.e. greater than 2, we can conclude that the  carrier's highest data speed​ is significantly higher.

3 0
3 years ago
An inflatable raft that you have jumped in to escape the monsters has 4500 cubic inches of air inside it when fully inflated. It
DedPeter [7]

Answer:

2628.48 cubic inches

Step-by-step explanation:

The inflatable raft has 4500 cubic inches of air inside it when fully inflated.

The inflatable raft loses air at a rate of a decrease 6.5% each day.

Now, we have to calculate the volume of air that will be left in the raft after 8 days.

Therefore, the volume of air left in the raft after 8 days will be 4500[1-\frac{6.5}{100} ]^{8} =2628.48 cubic inches. (Answer)

8 0
3 years ago
523 - 99 = 324 424 262 622
givi [52]
523 - 99 = 424
A calculator could help you out with problems like these...
8 0
3 years ago
If triangle ABC is congruent to triangle DEF, which statement does not follow?
Aleksandr [31]
I think it is b but I am not quite sure.
4 0
2 years ago
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