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3 years ago

Is ABC=XYZ? PLEASE HELP!!

Mathematics

1 answer:

statuscvo [17]3 years ago

6 0

Yes ur correct
ABC=XYZ

Because C and Z stay the same so just flip the shape n point A is small and X is small so they go together and B and Y r pointing out they go together

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Which function is increasing and has a constant slope?

ratelena [41]

We need to find the increasing function with constant slope.

Let us check each option one by one.

A) 6x -5y =10.

Let us solve it for y to get slope-intercept form

6x-5y =10.

-5y =-6x +10.

y =6/5 x-2.

<em>Slope is 6/5 positive, therefore, it's an increasing function.</em>

<em>A linear function always has a constant slope.</em>

<h3>Therefore, correct option is option A.</h3><h3>A. 6x -5y =10</h3>

All other options are incorrect.

5 0

4 years ago

Read 2 more answers

A population has a standard deviation of 80. A random sample of 400 items from this population is selected. The sample mean is d

Helga [31]

Answer:

$ME= 1.8808 * \frac{80}{\sqrt{400}} =7.5232$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma =80$ represent the population standard deviation

n=400 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

Since the Confidence is 0.94 or 94%, the value of $\alpha=0.06$ and $\alpha/2 =0.03$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.03,0,1)".And we see that $z_{\alpha/2}=1.8808$

The margin of error is given by:

$ME= 1.8808 * \frac{80}{\sqrt{400}} =7.5232$

4 0

4 years ago

Find the value of s² ( 20 - √ t) when s=2 , t=9

miv72 [106K]

Answer:

(2^2)(20−√9) =68

Step-by-step explanation:

5 0

3 years ago

Donnie deli man delivered 595 box lunches for the robotics convention. There were 20 more turkey sandwiches then roast beef. The

Vinil7 [7]

Answer:

250 turkey sandwiches were delivered.

There were 230 roast beef delivered.

115 PB&J were delivered.

Step-by-step explanation:

This question is solved using a system of equations.

I am going to say that:

x is the number of turkey sandwiches.

y is the number of roast beef.

z is the number of PB&J.

Donnie delivered 595 box lunches

This means that $x + y + z = 595$

There were 20 more turkey sandwiches then roast beef.

This means that $x = y + 20$

There were twice as many roast beef has PB&J.

This means that $y = 2z$ .

So in the second equation, we have that $x = 2z + 20$

Replacing this in the first equation:

$x + y + z = 595$

$2z + 20 + 2z + z = 595$

$5z = 575$

$z = \frac{575}{5}$

$z = 115$

115 PB&J were delivered.

$x = 2z + 20 = 2*115 + 20 = 250$

250 turkey sandwiches were delivered.

$x = y + 20$

$y = x - 20 = 250 - 20 = 230$

There were 230 roast beef delivered.

8 0

4 years ago

What is the length,width,and height

labwork [276]

Answer:

5 cubic units

Step-by-step explanation:

If each cube represents 1 cubic unit, then the volume will be the number of cubes to make the figure. When you count, there are 5 cubic units. The volume is 5.

4 0

4 years ago