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Yuri [45]
3 years ago
8

How do u turn 2.15 to a fraction

Mathematics
2 answers:
dolphi86 [110]3 years ago
5 0
Ask google. Google knows everything... hahaha
wolverine [178]3 years ago
5 0

It would be 43/20 or 2 3/20

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The graph of a linear system is shown.
GuDViN [60]
12+56 u
4678




Formation is explanation is 356
8 0
3 years ago
A simple random sample of items resulted in a sample mean of . The population standard deviation is . a. Compute the confidence
damaskus [11]

Answer:

Following are the solution to this question

Step-by-step explanation:

Please find the complete question in the attached file.

In point a:

a=0.05 \\\\| Z(0.025)|= 1.96  \text{(check in normal table)} \\\\ 95 \% \  CI \\\\\bar x  \pm  \ Z \times \frac{s}{\sqrt{n}}\\\\\to 80 \pm  1.96 \times \frac{15}{\sqrt{60}} \\\\\to (76.20448, 83.79552)

In point b:

95 \%  \ CI \ is \\\\ \bar x  \pm  Z \times \frac{s}{\sqrt{n}}\\\\\to  80 \pm 1.96 \times \frac {15}{\sqrt{120}}\\\\\to (77.31616,  82.68384)

In point c:

A large sample is a smaller error margin.

8 0
3 years ago
The side of an oil tanker is ripped open during an accident at sea. Oil starts leaking out of the ship at the rate of 60 barrels
Viefleur [7K]

Answer:

<h2> 3600 barrels</h2>

Step-by-step explanation:

Step one

Given data

We are told that the rate of leakage is

60 barrels per minute

time = 1 hours= 60 minute

Required

The quantity of the oil that leaked after time = 1 hour= 60 minutes

Step two:

From

Rate=Quantity/time

Quantity= rate*time

Quantity= 60*60

Quantity= 3600 barrels

3 0
3 years ago
What are the roots of the function y = 4x2 + 2x - 30?
a_sh-v [17]

Answer:

-3, 5/2

Step-by-step explanation:

What are the roots of the function y = 4x2 + 2x – 30?

To find the roots of the function, set y = 0. The equation is 0 = 4x2 + 2x – 30.

Factor out the GCF of : 2, so the equation becomes 0 = 2(2x2+x-15)

Next, factor the trinomial completely. The equation becomes: 0=2(x+3)(2x-5)

Use the zero product property and set each factor equal to zero and solve.

x+3=0      2x-5 = 0

x = -3, 5/2

The roots of the function are -3, 5/2.

Hope this helped!

7 0
3 years ago
Solve the following and round to the nearest thousandth.<br> 0.25 (7.5)
-Dominant- [34]
All you have to do is multiply both numbers and you get 1.875
7 0
3 years ago
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