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coldgirl [10]
2 years ago
11

Please help need answer now!!

Mathematics
1 answer:
Vesna [10]2 years ago
7 0

Answer: 5/2

Step-by-step explanation:

Using slope formula m = rise/run

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Find the median of the data set: -66, -48, -52, -42
olga2289 [7]
-66, -52, - 48, -42


If you can have 2 medians (since there is only 4 numbers), it is -52 and -48

If you can only have one,then i believe you choose -50, because it is in between -48 and -52

hope this helps
6 0
3 years ago
Suppose that the pages per book in a library are normally distributed with an unknown mean and standard deviation. The book leng
Elanso [62]

Answer:

A t-score of 2.0244 should be used to find the 99% confidence interval for the population mean

Step-by-step explanation:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 39 - 1 = 38

Now, we have to find a value of T, which is found looking at the t table, with 38 degrees of freedom(y-axis) and a confidence level of 0.99(t_{99}). So we have T = 2.0244.

A t-score of 2.0244 should be used to find the 99% confidence interval for the population mean

6 0
3 years ago
Find x. Round your answer to the nearest tenth of a degree.<br> 36<br> X<br> 19<br> +
Goshia [24]

Answer: 36.9

Step-by-step explanation:

4 0
2 years ago
An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on
butalik [34]

Answer:

90 engines must be made to minimize the unit cost.

Step-by-step explanation:

Vertex of a quadratic function:

Suppose we have a quadratic function in the following format:

f(x) = ax^{2} + bx + c

It's vertex is the point (x_{v}, y_{v})

In which

x_{v} = -\frac{b}{2a}

y_{v} = -\frac{\Delta}{4a}

Where

\Delta = b^2-4ac

If a>0, the minimum value of the function will happen for x = x_v

C(x)=x²-180x+20,482

This means that a = 1, b = -180, c = 20482

How many engines must be made to minimize the unit cost?

x value of the vertex. So

x_{v} = -\frac{b}{2a} = -\frac{-180}{2(1)} = 90

90 engines must be made to minimize the unit cost.

3 0
2 years ago
Please help ASAP I don’t understand this and only answer if you know just don’t answer with random letters please!!!!!
Airida [17]

Answer:

HI

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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