All categories

2 years ago

HELP ME PASS!!!! YOULL BE MY HERO FOREVER!!!!!!

Mathematics

2 answers:

Alexus [3.1K]2 years ago

4 0

2(-2y-4)-3y=13

-4y-8-3y=13

-7y=21

y=-3

x=2

substitute three into one of the original two problems and you get 2!

Hope this helped

marishachu [46]2 years ago

4 0

Answer:

all work is shown and pictured

You might be interested in

Find the measure of the arc or angle indicated. or find the value of x

bonufazy [111]

#8 you do 360= 112+136+x... then you solve for x. X=112. Now you divide this by two since it is an inscribed angle. For #9 I have this very simplified work in the picture. Sorry I did not do #10

5 0

3 years ago

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time student

Butoxors [25]

Answer: $(21.541,\ 23.059)$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : $n=240$ , which is a large sample , so we apply z-test .

Sample mean : $\overline{x}=22.3$

Standard deviation : $\sigma= 6$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.960$

Now, a confidence interval at the 95% level of confidence will be :-

$22.3\pm(1.960)\dfrac{6}{\sqrt{240}}\\\\\approx22.3\pm0.759\\\\=(22.3-0.759,\ 22.3+0.759)\\\\=(21.541,\ 23.059)$

7 0

3 years ago

Write an equation in point-slope form of a line that goes through the points (1,4) and (3,-10). Do not use any spaces in your an

olasank [31]

Answer:

y-4=-7(x-1) OR y-(-10)=-7(x-3)

Step-by-step explanation: The point-slope form is $y_$ - $y_{1}$ = $m_$ ( $x_$ - $x_{1}$ )

In slope-intercept form, the equation would be y = -7x + 11

You could find the slope by using the slope equation, $\frac{y_{2} -y_{1} }{x_{2} -x_{1} }$ .

Using that, you would get -7. Thus by inserting one of the points and the slope in the point-slope equation, you will get your answer.

6 0

2 years ago

The point where a function crosses and touches the x intercept us called

ch4aika [34]

Zerossssssssssssssss

8 0

3 years ago

Please help 3 time askingggg help meeee

Drupady [299]

Answer:

5. -2 3/4, -2.2, 2.8, 3 1/8

6. -0.6 , 0.65 , 2/3 , 4/5

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers