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3 years ago

Please help meeeee c:

Mathematics

1 answer:

masya89 [10]3 years ago

3 0

Answer:

x = - 2

Step-by-step explanation:

Don't let the points disturb you. They are actually meant to confuse you.

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1. Multiply. 8 •（-6）Show all work.

FrozenT [24]

A positive number times a negative number would always equal a negative number, so 8x-6 would be -48. lll

3 0

3 years ago

What are the first 10 digits of pie?

Ronch [10]

Answer: 3.141592653589792

Step-by-step explanation: You will definitely never in your life need to know more than that :) I suggest you make a song to remember.

7 0

4 years ago

Read 2 more answers

Using point-slope form, write the equations of the lines that have the following slopes and points.

zavuch27 [327]

Point slope form: y - y1 = m(x - x1)
Plug in the values
a) y + 4 = 5(x - 2)
b) y - 9 = -3/2(x + 2)

8 0

3 years ago

When randomly selecting an adult, A denotes the event of selecting someone with blue eyes. What do Upper P (Upper A )P(A) and U

bezimeni [28]

Answer:

P(A): It is the probability of selecting someone with blue eyes.

$P(\bar{A})$ : It is the probability of selecting someone who does not have blue eyes

Step-by-step explanation:

We are given the following in the question:

A: event of selecting someone with blue eyes.

Probability:

The probability of an event tells the chances of happening of that event.

It is mathematically defined as:

$\text{Probability} = \displaystyle\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}$

Complement of an event:

It is the event that consist of all outcomes not happening in A.

It is represented by $\bar{A}$

$P(A) + P(\bar{A}) = 1$

We have to explain the representation:

a) P(A): It is the probability of selecting someone with blue eyes.

It gives us the chances of someone having blue eyes.

b) $P(\bar{A})$ : It is the probability of selecting someone who does not have blue eyes

It is the chances of selecting someone who does not have blue eyes.

4 0

4 years ago

A sample of 8 new models of automobiles provides the following data on highway miles per gallon. Highway Miles Model Per Gallon

Furkat [3]

Answer:

The point estimate for the mean is 29.5 miles per gallon and the standard deviation is 5.9

Step-by-step explanation:

The formula por the point estimate of the mean is:

$mean(x) = \frac{x1+x2+x3+...+xn}{n}$

And for the standard deviation:

$desv(x)=(\frac{1}{n-1}sum(xi^{2} - n*x^{2} ))^{1/2}$

So for the mean:

$mean(x)=\frac{33.6+26.8+20.2+38.7+35.1+28.0+26.2+27.6 }{8} \\\\mean(x)=\frac{236.2}{8} \\\\mean(x)=29.5$

And for the standard deviation:

$desv(x)=(\frac{1}{8-1} ((33.6-29.5)^{2} +(26.8-29.5)^{2} +(20.2-29.5)^{2} +(38.7-29.5)^{2} +(35.1-29.5)^{2} +(28-29.5)^{2} +(26.2-29.5)^{2} +(27.6-29.5)^{2})^{1/2} \\\\desv(x)=(\frac{1}{8-1} ((4.1)^{2} +(-2.7)^{2} +(-9.3)^{2} +(9.2)^{2} +(5.6)^{2} +(-1.5)^{2} +(-3.3)^{2} +(-1.9)^{2})^{1/2} \\\\desv(x)=\sqrt{\frac{243.3}{7}} \\\\desv(x)=\sqrt{34.7} \\\\desv(x)=5.9$

5 0

4 years ago