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3 years ago

Why is y =ax+b called a linear equation

Mathematics

1 answer:

grigory [225]3 years ago

3 0

It's called a linear equation because the linear equation formula is y= mx+b, so they just changed the m to an a

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Sabrina is x years old.

Elan Coil [88]

Answer:

Step-by-step explanation:

If Sabrina is 5 & Michael is 7. (5×7=35)

Michael is 7, & he is 3 yrs younger than Meghan, who is 10. And Meghan is twice as old as Sabrina, when Sabrina is 5 (5×2=10).

8 0

3 years ago

Read 2 more answers

A survey of 200 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take

Lina20 [59]

Answer:

The 95% confidence interval for the true proportion of university students who use laptop in class to take notes is (0.2839, 0.4161).

Step-by-step explanation:

The (1 - α)% confidence interval for population proportion P is:

$CI=p\pm z_{\alpha/2}\sqrt{\frac{p(1- p)}{n}}$

The information provided is:

x = number of students who responded as"yes" = 70

n = sample size = 200

Confidence level = 95%

The formula to compute the sample proportion is:

$p=\frac{x}{n}$

The R codes for the construction of the 95% confidence interval is:

> x=70

> n=200

> p=x/n

> p

[1] 0.35

> s=sqrt((p*(1-p))/n)

> s

[1] 0.03372684

> E=qnorm(0.975)*s

> lower=p-E

> upper=p+E

> lower

[1] 0.2838966

> upper

[1] 0.4161034

Thus, the 95% confidence interval for the true proportion of university students who use laptop in class to take notes is (0.2839, 0.4161).

7 0

4 years ago

Read 2 more answers

you have a gift card worth 90$ you want to buy several movies that costs 12$ each. Write and solve an inequality that represents

Roman55 [17]

She can buy 5 movies

3 0

4 years ago

Describe and correct the error in the solution. (Be specific and explain as

sweet [91]

The error occurred in step 2. You have to use the distributive property for the parenthesis. It is supposed to be 5p+15.

The correct solution is p>-13.

6 0

4 years ago

Please answer this! & explain how to get the answers.

konstantin123 [22]

(x - 2) • (x - 3) • (x - 4) • (x - 5)

Step by step solution :

Step 1 :

Equation at the end of step 1 :

((((x4)-(14•(x3)))+71x2)-154x)+120

Step 2 :

Equation at the end of step 2 :

((((x4) - (2•7x3)) + 71x2) - 154x) + 120

The factor(s) are:

of the Leading Coefficient : 1

of the Trailing Constant : 1 ,2 ,3 ,4 ,5 ,6 ,8 ,10 ,12 ,15 , etc

6 0

3 years ago