Help please help help help

Tema [17]

To solve this, we first ask: How many wholes of 6 are there in 19?

19 divided by 6 is 3

Then we ask: How many sixths are there left over?

We have 1/6 left over

The mixed number is 3 1/6

Three wholes and one sixth.

8 0

4 years ago

Match the system of equations on the left with the appropriate solution on the right.

VARVARA [1.3K]

Answer:

$x=7-2y$ $(1,3)$

$3x+6y=-9$ $(-1,-1)$

$4x-2y-3$ $\text{no solution}$

$2x+4y=7$ $\text{infinite number of solutions}$

$x=-2y-3$ $(1,-2)$

Step-by-step explanation:

1: $x=7-2y$

$\Rightarrow x+2y=7$

$\Rightarrow (1,3)\;\text{is a solution of the above equation}.$

2: $3x+6y=-9$

$\Rightarrow 3(-1)+6(-1)=-3-6=-9$

$\Rightarrow (-1,-1)\; \text{is a solution of the equation 3x+6y=-9}.$

3: $4x-2y-3$

$\Rightarrow \;\text{It is not an equation}\\ \text{So, 4x-2y-3 has no solution.}$

4: $2x+4y=7$

$\Rightarrow 2x+4y=7\;\text{have an infinite number of solutions.}\\\text{Because for every x there exists a value of y which satisfies the equation.}$

5: $x=-2y-3$

$\Rightarrow x+2y=-3$

$\Rightarrow 1-2(-2)=1-4=-3$

$\Rightarrow (1,-2)\; \text{is a solution of the equation x=-2y-3}.$

7 0

4 years ago

The product of 4 and a number

sukhopar [10]

Answer:

4*x

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Please help 16 points due tomorrow

NemiM [27]

Answer:

1) 26.1% increase

2) 20% decrease

Work:

1)

-subtract the larger # from the smaller # to figure out what the change was.

$8.8 - 6.5 = 2.3$

-divide 2.3 by the orriginal ammount (8.8) to find your answer as a decimal

$2.3 \div 8.8 = 0.261$

-take 0.261 and multiply it by 100 to have your answer as a percent

$0.2614 \times 100 = 26.1$

-if the original number increased than it is percent increase and if the original number decreased than it is percent decrease

2)

-subtract the larger # from the smaller # to figure out what the change was.

$15 - 12 = 3$

-divide 2.3 by the orriginal ammount (15) to find your answer as a decimal

$3 \div 15 = 0.2$

-take 0.2 and multiply it by 100 to have your answer as a percent

$0.2 \times 100 = 20$

-if the original number increased than it is percent increase and if the original number decreased than it is percent decrease

8 0

3 years ago

A ball is thrown into the air with an upward velocity of 48 ft/s. Its height h in feet after

Paladinen [302]

Answer:

Step-by-step explanation:

The equation used to represent the height of the ball, h in feet after t seconds is expressed as

h = -16t² + 48t + 8

The equation is a quadratic equation. The plot of this equation on a graph would form a parabola whose vertex would be equal to the maximum height travelled by the ball.

The vertex of the parabola is calculated as follows,

Vertex = -b/2a

From the equation,

a = -16

b = 48

Therefore,

Vertex = - 48/2 × - 16 = 48/32 = 1.5 seconds

So the ball will attain maximum height in 1.5 seconds.

To determine the maximum height, we would substitute t = 1.5 into the given equation. It becomes

h = -16(1.5)² + 48(1.5) + 8

h = - 36 + 72 + 8 = 44 feet

5 0

3 years ago