2 years ago

1. True or false:

Mathematics

1 answer:

Nitella [24]2 years ago

4 0

1) true

2)false

Step-by-step explanation:

1) 5(3)+2(4) = 23

= 15+8=23

23=23

thus, (3,4) is solution for 5x + 2y = 23

2) 5(0)+2(4) =23

= 0+8 is not 23

thus, (0,4) is not solution for 5x + 2y = 23

You might be interested in

20 pts to whoever helps!!

VladimirAG [237]

<h3>Answer: B) 31.348</h3>

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

Work Shown:

We will never use the alpha = 0.05 value when computing the test statistic. So we can ignore alpha for this particular problem.

-------

n = 40 is the sample size.

s = 2.6 is the sample standard deviation

$\sigma$ = sigma = 2.9 is the population standard deviation (ie the claimed standard deviation for all the pay phones)

Test Statistic for chi-square

$\chi^2 = \frac{(n-1)*s^2}{\sigma^2}\\\\\chi^2 = \frac{(40-1)*(2.6)^2}{(2.9)^2}\\\\\chi^2 = \frac{39*6.76}{8.41}\\\\\chi^2 = \frac{263.64}{8.41}\\\\\chi^2 \approx 31.3483947681332\\\\\chi^2 \approx 31.348\\\\$

7 0

3 years ago

Read 2 more answers

Can someone just take an educated guess? Its multiple-choice and I'm so lost :(

Shkiper50 [21]

Answer:

D is the right one im 100% sure on it

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Tyler took out a loan at a 14.7% APR, compounded monthly, to buy a boat,

Zanzabum

Answer:

14.4%, compounded monthly

Step-by-step explanation:

APEX

7 0

3 years ago

Read 2 more answers

Please help me I can’t fail it

Hoochie [10]

Answer:

Step-by-step explanation:

1.rational

2.irrational

3.rational

4.rational

5.rational

6.irrational

8 0

2 years ago

Find the difference.<br><br> (5x2 - 3x + 7) - (3x2 + 4x - 5)

Katena32 [7]

Answer:

16-7x

Step-by-step explanation:

10x-3x+7-6-4x+5

16-7x

7 0

2 years ago

Read 2 more answers