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Alika [10]
3 years ago
9

Using the pattern in the table, what is the elevation of the submarine after 3 hours? After 45 minutes? After 0 minutes

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
4 0

Negative 2700, 315, and 0

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your bedroom is in the shape of a square that is 12 feet long on each side. Will a circular rug with a circumference of 40.82 fe
kotegsom [21]
Circumference = PI * diameter
diameter = Circumference / PI
diameter = 40.82 / 3.14159265
diameter = <span> <span> <span> 12.9934095689 </span> </span> </span>
Basically, the rug is roughly 1 foot wider than the room.


7 0
3 years ago
Simplify (92 – 3 × 7) ÷ (7 – 3)
Sladkaya [172]

Answer:

c

Step-by-step explanation:

3 is a prime number, it cannot be factored into other prime factors

5 0
3 years ago
Read 2 more answers
Please help i will give brainliest
inysia [295]

Answer:

Step-by-step explanation:

Take the area of the yard and subtract from it the area of the pool.  In quadratic form, the area of the pool is

2x^2-x-28

Subtracting the area of the pool from the area of the yard:

3x^2-14x-5-(2x^2-x-28)

Since the negative in front of the parenthesis will change the signs inside:

3x^2-14x-5-2x^2+x+28

Combine like terms to get the area left after the pool goes in:

x^2-13x+23

8 0
3 years ago
We are interested in the amount that students study per week. Suppose you collected the following data in hours {4.4, 5.2, 6.4,
olga nikolaevna [1]

Answer:

Step-by-step explanation:

Hello!

The objective is to estimate the average time a student studies per week.

A sample of 8 students was taken and the time they spent studying in one week was recorded.

4.4, 5.2, 6.4, 6.8, 7.1, 7.3, 8.3, 8.4

n= 8

X[bar]= ∑X/n= 53.9/8= 6.7375 ≅ 6.74

S²= 1/(n-1)*[∑X²-(∑X)²/n]= 1/7*[376.75-(53.9²)/8]= 1.94

S= 1.39

Assuming that the variable "weekly time a student spends studying" has a normal distribution, since the sample is small, the statistic to use to perform the estimation is the student's t, the formula for the interval is:

X[bar] ± t_{n-1;1-\alpha /2}* (S/√n)

t_{n-1;1-\alpha /2}= t_{7;0.975}= 2.365

6.74 ± 2.365 * (1.36/√8)

[5.6;7.88]

Using a confidence level of 95% you'd expect that the average time a student spends studying per week is contained by the interval [5.6;7.88]

I hope this helps!

3 0
3 years ago
Read 2 more answers
I'd like the ratio of cupcakes to my guests to be 3 to 1 and there will be 2 guests. What is the amount of cupcakes I need to ge
Ostrovityanka [42]

Answer:

6

Step-by-step explanation:

If it's 3 cupcakes for 1 person and you have 2 people, then you need 6 cupcakes.

Hope this helps! Plz give brainliest!

8 0
2 years ago
Read 2 more answers
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