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3 years ago

Is (8,3) solution to 3x-4y>12

1 answer:

7 0

What you would do to figure this out is plug in x and y.

3(8)-4(3)>12

24-12>12

12>12

12 cannot be greater than twelve because they’re equal so it’s not.

Have a good day!

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A rocket is shot off from a launcher. The accompanying table represents the height of the rocket at given times, where x is time

galben [10]

Answer:

The height at time of 12.1 seconds is approximately 729.2562 feet

Step-by-step explanation:

The general form of the quadratic regression equation is y = A + Bx + Cx²

The quadratic regression formula is given as follows;

$B = \dfrac{S_{xy}S_{x'x'}-S_{x'y}S_{xx'}}{S_{xx}S_{x'x'} -(S_{xx'})^2}$

$C = \dfrac{S_{x'y}S_{xx}-S_{xy}S_{xx'}}{S_{xx}S_{x'x'} -(S_{xx'})^2}$

$A = \bar y - B \bar x - C \bar {x^2}$

$S_{xx} = \Sigma (x_i - \bar x)^2$

$S_{xy} = \Sigma (x_i - \bar x)(y_i - \bar y)$

$S_{xx'} = \Sigma (x_i - \bar x)(x^2_i - \bar {x^2})$

$S_{x'x'} = \Sigma (x^2_i - \bar {x^2})^2$

$S_{x'y} = \Sigma (x^2_i - \bar {x^2})(y_i - \bar {y})$

Solving using an online quadratic regression calculator, gives;

A = 2.5643259

B = 246.6374865

C = -15.41986006

Substituting gives;

y = 2.5643259 + 246.6374865·x -15.41986006·x²

When time, x = 12.1, we have;

y = 2.5643259 + 246.6374865×12.1 -15.41986006×12.1²≈ 729.2562 feet

The height at time of 12.1 seconds ≈ 729.2562 feet.

8 0

2 years ago

The perimeter of the rectangle shown below is 24 feet. What's the length of side x?

Vedmedyk [2.9K]

Answer:

b)4feet

Step-by-step explanation:

In a rectangle two sides are equal.

Perimeter is the distance around the rectangle thus.

length=24-8-4-8

length=4

5 0

3 years ago

A wildlife reserve has a population of 70 elephants. A group of researchers trapped 30 elephants and recorded their vital statis

kramer

This is like the most obvious question I don’t even need math just think there are 70 elephants in all. I can eliminate all answers that are more than 70 no how many have we eliminated? Oh wait 3/4 sooooo yea it’s A.

4 0

3 years ago

If 10 pineapples cost 20$ whats the cost for 1

Blababa [14]

Answer:

2$ per because 10 divided by 20 equals 2

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Anybody help please hm

zubka84 [21]