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3 years ago

Lu is graphing the ordered pair (3, 5). Starting at the origin, what does she need to do?

Mathematics

2 answers:

WINSTONCH [101]3 years ago

8 0

Answer:

Lu needs to move the right 3 units and up 5 units.

Step-by-step explanation:

melomori [17]3 years ago

6 0

Lu needs to move the right 3 units and up 5 units.

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What is the answer a, b, c, or d

podryga [215]

Answer: Choice B

(-2, 5)

==================================================

Explanation:

The original system is

$\begin{cases}-4x+3y = 23\\ x-y = -7\end{cases}$

Multiply both sides of the second equation by 3. Doing so leads to this updated system of equations

$\begin{cases}-4x+3y = 23\\ 3x-3y = -21\end{cases}$

Now add straight down

The x terms add to -4x+3x = -1x = -x

The y terms add to 3y+(-3y) = 0y = 0

The terms on the right hand sides add to 23+(-21) = 2

We end up with the equation -x = 2 which solves to x = -2

Now use this to find y. You can pick any equation with x,y in it

----------------

-4x+3y = 23

-4(-2)+3y = 23

8+3y = 23

3y = 23-8

3y = 15

y = 15/3

y = 5

x-y = -7

-2-y = -7

-y = -7+2

y = -5

y = 5

Either way, we get the same y value.

So that's why the solution is (x,y) = (-2, 5)

6 0

3 years ago

2y-____=0;y=0 HELPPPPPPP

AVprozaik [17]

Answer:

D.) 0

Step-by-step explanation:

Its not A. cause 2y−2=0 is y = 1

Its not B. cause 2y−1=0 is y = 1/2

Its not C. cause 2y−3=0 is y = 3/2

Soo... The only option left is D.

It IS D. cause 2y − 0 = 0 is y=0

So you are Correct!!!

hope I helped... <3

Good luck dear :)

4 0

4 years ago

Jeff writes comic strips for local newspaper. The number of comic strips he created is represented by the function f(x)=3x, wher

grin007 [14]

If Jeff writes comic strips at a rate of 3 comics an hour then you must put 3,4,7&9 into the function and add up the products.
9+12+21+27=69

5 0

3 years ago

At a concert, 20% of the audience members were teenagers. If the number of teenagers at the concert was 360, what was the total

sattari [20]

1800
20%=1/5 which means 360x5 is the number of people at the concert
360x5=1800

hope this helps :)

8 0

4 years ago

Read 2 more answers

The average cost of tuition plus room and board at small private liberal arts colleges is reported to be less than $18,500 per t

lys-0071 [83]

Answer:

The null and alternative hypothesis for this study are:

$H_0: \mu=18500\\\\H_a:\mu< 18500$

The null hypothesis is rejected (P-value=0.004).

There is enough evidence to support the claim that the average cost of tuition plus room and board at small private liberal arts colleges is less than $18,500 per term.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the average cost of tuition plus room and board at small private liberal arts colleges is less than $18,500 per term.

Then, the null and alternative hypothesis are:

$H_0: \mu=18500\\\\H_a:\mu< 18500$

The significance level is 0.05.

The sample has a size n=150.

The sample mean is M=18200.

The standard deviation of the population is known and has a value of σ=1400.

We can calculate the standard error as:

$\sigma_M=\dfrac{\sigma}{\sqrt{n}}=\dfrac{1400}{\sqrt{150}}=114.31$

Then, we can calculate the z-statistic as:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{18200-18500}{114.31}=\dfrac{-300}{114.31}=-2.624$

This test is a left-tailed test, so the P-value for this test is calculated as:

$P-value=P(z$

As the P-value (0.004) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the average cost of tuition plus room and board at small private liberal arts colleges is less than $18,500 per term.

3 0

4 years ago