All categories

2 years ago

PLEASE HELP MEEEE and ty :)

Mathematics

1 answer:

polet [3.4K]2 years ago

6 0

Step-by-step explanation:

did you try to apply 2 for all the x's in the problem

You might be interested in

Lenore has 1/4 Cup of candy,she divides the candy among her 2 friends. How much. Candy will each friend get?

Nesterboy [21]

Each friend will get 1/8

4 0

3 years ago

On a hot day, a football team drank an entire 50-gallon cooler of water and half as much again. How much water did they drink?

NemiM [27]

Answer:

The football team drank a total of 75 gallons of water.

Step-by-step explanation:

Half of 50 gallons is 25 gallons. 25 gallons + 50 gallons = 75 gallons.

7 0

3 years ago

Read 2 more answers

A study of the relationship between age and various visual functions (such as acuity and depth perception) reported the followin

maks197457 [2]

Answer:

(a) $\sum x_i=56.68$ and $\sum x_i^2=197.46$

(b) The sample variance is $s^2=0.530$ and the sample standard deviation is $s=0.728$

Step-by-step explanation:

(a)

The sum of these 17 sample observations is

$\sum x_i=2.79\:+2.57+\:2.73\:+3.75\:+2.27+\:2.75+\:4.00+\:4.22+\:3.88+\:4.35+\:3.41+\:4.57+\:2.38+\:3.73\:+2.75+\:3.47+\:3.06\\\\\sum x_i=56.68$

and the sum of their squares is

$\sum x_i^2=2.79^2\:+2.57^2+\:2.73^2\:+3.75^2\:+2.27^2+\:2.75^2+\:4.00^2+\:4.22^2+\:3.88^2+\:4.35^2+\:3.41^2+\:4.57^2+\:2.38^2+\:3.73^2\:+2.75^2+\:3.47^2+\:3.06^2\\\\\sum x_i^2=197.46$

(b)

The sample variance, denoted by $s^2$ , is given by

$s^2=\frac{S_{xx}}{n-1}$

where $S_{xx} =\sum x_i^2-\frac{(\sum x_i)^2}{n}$

Applying the above formula we get that

$S_{xx}=197.46-\frac{(56.68)^2}{17}\\\\S_{xx} =8.482$

$s^2=\frac{8.482}{17-1}=0.530$

The sample standard deviation, denoted by <em>s</em>, is the (positive) square root of the variance:

$s=\sqrt{s^2}$

Applying the above formula we get that

$s=\sqrt{0.530}=0.728$

3 0

3 years ago

Martín has 5 inches of yarn to use in a craft project. How many 1/4 inch pieces can he make from the yarn?

Fudgin [204]

Answer:

1.8 inches

Step-by-step explanation:

6 0

3 years ago

Is the problem, 6y-2x=10 in standard form?

serious [3.7K]

Answer:

No.

Step-by-step explanation:

Standard form is

ax + by = c.

So 6y - 2x = 10 is not in standard form.

Correct is -2x + 6y = 10.

4 0

3 years ago

Read 2 more answers