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2 years ago

WILL MAKE BRAINLIST!!!!!!

Mathematics

1 answer:

bixtya [17]2 years ago

4 0

Answer:

To do this, subtract 6 from both sides. − 3_x_ + 6 − 6 > 12 − 6. −3_x_ > 6. Now divide both sides of the inequality by −3. Since you're dividing by a negative number, you need to flip the inequality sign.

Step-by-step explanation:

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What is the ratio of a nickel to one dollar? reduce to simplest form

makkiz [27]

1:0.05

I think this is the answer

3 0

3 years ago

Brainly use a matrix to find the solution to the system of equations -8x-8y=-16 6x-9y=-108

Mama L [17]

We want to use a matrix to solve
-8x - 8y = -16
6x - 9y = -108

Before solving, simplify the equations as follows:
Divide the first equation by -8 to obtain
x + y = 2 (1)
Divide the second equation by 3 to obtain
2x - 3y = -36 (2)

In matrix form, the equations are
$\begin{bmatrix}1&1\\2&-3\end{bmatrix} \begin{\bmatrix} x\\y\end{bmatrix}=\begin{bmatrix}2 \\ -36 \end{bmatrix}$

The determinant of the matrix is
D = (1)(-3) - (1)(2) = -5

Use Cramer's Rule.
$x = \frac{1}{D} det(\begin{bmatrix}2&1\\-36&-3 \end{bmatrix} ) = \frac{1}{-5} (-6+36) = -6$
Similalrly,
$y= \frac{1}{-5} det(\begin{bmatrix} 1&2\\2&-36\end{bmatrix} ) = \frac{1}{-5}(-36-4) =8$

Answer: (-6, 8) or x = -6, y = 8

8 0

3 years ago

Drag the tiles to the correct boxes to complete the pairs.

Julli [10]

Answer:

1 = A

2 = D

3 = B

4 = C

Step-by-step explanation:

3 0

3 years ago

Please HELP ME!!!! This is really confusing. HOW DO I DO THIS?!?!?!

Svetradugi [14.3K]

Answer:

Flying Disc should be 72

Step-by-step explanation:

circumference = πd

HD Coin C = 3π

9.42477796077

Flying Disc. C = 23π
72.2566310326

Jar Lid C = 8π

25.1327412287

Flower Pot C = 15π

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8 0

1 year ago

A ball is thrown upward from the top of a 40 foot high building at a speed of 80 feet per second. The ball's height above

tekilochka [14]

it takes 5 seconds to reach a height of 40 ft. and It takes 2.5 seconds to reach maximum height.

Let h(t) represent the height of the ball at time t.

Given that the height is given by:

h(t) = -16t² + 80t + 40

1) For the ball to reach a height 0f 40 ft, h(t) = 40, hence:

40 = -16t² + 80t + 40

16t² - 80t = 0

t(t - 5) = 0

t = 0 or t = 5

Hence it takes 5 seconds to reach a height of 40 ft.

2) The maximum height is at h'(t) = 0,

h'(t) = -32t + 80

-32t + 80 = 0

32t = 80

t = 2.5

It takes 2.5 seconds to reach maximum height.

Find out more at: brainly.com/question/11535666

5 0

3 years ago