All categories

3 years ago

Write an expression

Mathematics

2 answers:

Flura [38]3 years ago

7 0

Answer:

0.50+0.35x

Step-by-step explanation:

mafiozo [28]3 years ago

4 0

Answer:

0.5+0.35m

Step-by-step explanation:

You might be interested in

Convert y=-1/4x+4 in standard form

kondor19780726 [428]

Idk but I think it is 3 so hope it is right so please accept

3 0

3 years ago

Can anyone explain how to do multiplicative inverse? im in 8th grade btw... please give an example and explain. I will mark you

neonofarm [45]

Answer:

i dont get it

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

You do a study of hypnotherapy to determine how effective it is in increasing the number of hours of sleep subjects get each nig

brilliants [131]

Answer:

Confidence interval

$8.98-2.2\frac{1.29}{\sqrt{12}}=8.16$

$8.98+2.2\frac{1.29}{\sqrt{12}}=9.80$

And the margin of error would be:

$ME=2.2\frac{1.29}{\sqrt{12}}=0.819$

Step-by-step explanation:

For this case we have the followig dataset:

DATA: 8.2; 9.1; 7.7; 8.6; 6.9; 11.2; 10.1; 9.9; 8.9; 9.2; 7.5; 10.5

We can calculate the mean and the deviation with the following formulas:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

$s =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$\bar X= 8.98[/tex[tex]s = 1.29$

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

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

The degrees of freedom are given by:

$df=n-1=12-1=11$

The Confidence level is 0.95 or 95%, the value of significance is $\alpha=0.05$ and $\alpha/2 =0.025$ , and the critical value would be $t_{\alpha/2}=2.20$

Repplacing the info we got:

$8.98-2.2\frac{1.29}{\sqrt{12}}=8.16$

$8.98+2.2\frac{1.29}{\sqrt{12}}=9.80$ And the margin of error would be:

$ME=2.2\frac{1.29}{\sqrt{12}}=0.819$

7 0

3 years ago

What is h(x) = 7 + 10x + x2 written in vertex form?

Damm [24]

Answer:

h(x) = (x + 5)² − 18

Step-by-step explanation:

h(x) = 7 + 10x + x²

h(x) = x² + 10x + 7

Complete the square. (10/2)² = 25, so:

h(x) = x² + 10x + 25 − 18

h(x) = (x + 5)² − 18

3 0

3 years ago

Subtract 5y ^2−6y−115, y, squared, minus,

Tamiku [17]

Answer:

y^2+8y+16

Step-by-step explanation:

6y^2 +2y +5 - ( 5y^2 -6y-11)

Distribute the minus sign

6y^2 +2y +5 - 5y^2 +6y+11

Combine like terms

y^2+8y+16

5 0

3 years ago

Read 2 more answers