MATHEMATICS HIGH SCHOOL

Maths question that I need help with. I honestly dont understand a thing about prooving.

Answers

Answer 1

Answer:

Answer:

i think angle a and o are 76

Step-by-step explanation:

180 - 28 =152 152/2=76

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The price of a chromebook is $230. The sales tax is 12%. What is the amount of the sales tax for the chromebook?$57.20

$9.60

$23.20

$27.60

Answers

Answer:

27.60

Step-by-step explanation:

take your $230 and takes 12% and do 12% of 230 which will get you 27.60

27.60 you have to multiply 230 x 12 and there is your answer

PLEASE HELP. What is the equation of the circle in standard form where the center is (-16,-14) and another point on the circle is (-8,-8)

Answers

recall that the radius is the distance from the center of a circle to any point on the circle.

we know the center is at -16,-14, and we know that -8,-8 is a point on the circle, so the distance between both must be the radius.

$\bf ~~~~~~~~~~~~\textit{distance between 2 points}\n\n(\stackrel{x_1}{-16}~,~\stackrel{y_1}{-14})\qquad(\stackrel{x_2}{-8}~,~\stackrel{y_2}{-8})\qquad \qquadd = √(( x_2- x_1)^2 + ( y_2- y_1)^2)\n\n\n\stackrel{radius}{r}=√([-8-(-16)]^2+[-8-(-14)]^2)\n\n\nr=√((-8+16)^2+(-8+14)^2)\implies r=√(8^2+6^2)\n\n\nr=√(100)\implies \boxed{r=10}\n\n[-0.35em]\rule{34em}{0.25pt}$

$\bf \textit{equation of a circle}\n\n(x- h)^2+(y- k)^2= r^2\qquadcenter~~(\stackrel{-16}{ h},\stackrel{-14}{ k})\qquad \qquadradius=\stackrel{10}{ r}\n\n\n\[x-(-16)]^2+[y-(-14)]^2=10^2\implies \blacktriangleright (x+16)^2+(y+14)^2=100 \blacktriangleleft$

a) Using your equation from step 2d, estimate the GPA of a student who studies for 15 hours a week. Justify your answer. The equation is y=0.149x+0.89

Answers

The GPA is 3.125 who studies for 15 hours a week if the line of the best fit is y=0.149x+0.89

What is the line of best fit?

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

$\rm m = (n\sum xy-\sum x \sum y)/(n\sum x^2 - (\sum x)^2)\n\n\rm c = (\sum y -m \sum x)/(n)$

We have a line of best fit:

y = 0.149x + 0.89

Plug x = 15 hours

y = 0.149(15) + 0.89

y = 3.125

Thus, the GPA is 3.125 who studies for 15 hours a week if the line of the best fit is y=0.149x+0.89

Learn more about the line of best fit here:

brainly.com/question/14279419

#SPJ2

Answer:

The predicted GPA is then y = 0.149(15) + 0.89 = 3.125

Step-by-step explanation:

Although you don't specifically say so, the equation you provide here is probably a "best fit" equation based upon data: GPA versus number of hours of study per week.

Here, y = 0.149x + 0.89 and the number of study hours of interest is 15.

The predicted GPA is then y = 0.149(15) + 0.89 = 3.125

My question is what is 4-5h how do you solve this problem

Answers

Let us assume that 4 - 5h = 0

we need to the value of h.

4 - 5h = 0
-5h = -4
-5h/-5 = -4/-5
h = 4/5

To check: substitute h by its value.
4 - 5h = 0
4 - 5(4/5) = 0
4 - 20/5 = 0
4 - 4 = 0
0 = 0

Set the expression equal to 0.
4 - 5h = 0

Add 4 on both sides.
5h = 4

Divide by 5 on both sides.
h = $\fbox {4/5}$

Given: f(x)=4x-9 and g(x)= 2x-3. What is the value of (f+g)(0)=?A.-9
B.-10
C.-11
D.-12

Answers

Answer:

D. -12

Step-by-step explanation:

if f=4x-9, and g=2x-3, and the value is (f+g), then we have to add the equations. This is equal to 6x-12. And then, in '(f+g)(0)', it is asking what is the y-value at x=0. Plug in 0 into the equation, and the y-value equals -12.

The Assignment Of The Members Of A Football Team To Jersey Numbers.

Answers

The members of a football team are assigned pre approved numbers base on there position on the team. offensive linemen must be numbered from 50 to 79, while backs and ends must wear numbers either from 1 to 49 or 80 to 99.

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