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3 years ago

Pls help because I have no clue and I am just a dumb 7th grader

Mathematics

1 answer:

frosja888 [35]3 years ago

8 0

So first you have to simply and evaluate the expression . it becomes x>2. plot the point on 2 using an open circle going to the right .

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John’s parents recorded his height at various ages between 36 and 66 months.

timurjin [86]

Answer:

Step-by-step explanation:

a)General least square regression line is ,

$Y=a+(b*x)$

Where,a=intercept. b= slope

To get line just find values of a and b.

Use Excel to find values.

First enter values of variable "age" that is y in the column A that is A1to A5 and values of variable "height" in the column B, B1 to B5.

Then for value of a use functufuas ,

=INTERCEPT(A1:A5,B1:B5)

Then hit enter ,therefore a=20.4595

For b use function as. =SLOPE(A1:A5,B1:B5)

Then hit enter.therefore b=0.3738

Therefore equation of least square regression line is

Y=20.4595+(0.3738*x)

b) to predict height at age 21 years or 252 month just put value of x=252 in the above equation.

Y=20.4595+(0.3738+252)

Y=20.4595+94.1976

Y=114.6571

Conclusion: height will be 114.6571 inches when age change by 1 unit.

7 0

3 years ago

The shape of Oklahoma can almost be divided into 2 perfect rectangles and 1 triangle. About how many square miles does Oklahoma

Sav [38]

The answer is 63,800 mi²

hoped this helps

4 0

3 years ago

Please help! ! ! ! !

Vladimir [108]

B is the answer how you do good

3 0

3 years ago

(-12,-5);slope =1/3 write in slope -intercept form

leonid [27]

Answer:

y = $\frac{1}{3}$ - 1

Step-by-step explanation:

y - y1 = m (x - x1)

y + 5 = $\frac{1}{3}$ (x + 12)

y + 5 = $\frac{1}{3}$ x + $\frac{12}{3}$

y + 5 = $\frac{1}{3}$ x + 4

y = $\frac{1}{3}$ x - 1

Hope this was helpful :)

7 0

3 years ago

Read 2 more answers

Help I don't understand this one either I bed help show your work and answer

Firlakuza [10]

Well well we find the area of the triangle first:
area = 1/2 * base * height
area = 1/2 * 8 1/4 * 5 3/4
area = 1/2 * 33/4 * 23/4
area = 1/2 * 759/16
area = 759 / 32
area = 23 23/32

now if we multiply the length of the triangles we get volume because the volume of the prism is really just the sum of the areas of all the triangles that make up it's length. So:
volume = 23 23/32 * 12
volume = 276 276/32
276/ 32 = 8 5/8
volume = 284 5/8

6 0

3 years ago