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3 years ago

(-2x)(x-3) Y^2-y/ y Help with algebra!!

Mathematics

1 answer:

saveliy_v [14]3 years ago

3 0

Answer:

8.−2x^2+6x

9.y-1

Step-by-step explanation:

8.(−2x)(x−3)

=(−2x)(x+−3)

=(−2x)(x)+(−2x)(−3)

=−2x^2+6x

9. y^2−y

= y^2−y

=y−1

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What is the least common factor of 60,66

Ilia_Sergeevich [38]

Answer:3

Step-by-step explanation: 60/6=10

66/6=11

60/3=20

66/3=22 you double the numbers of the quotient which halves the factor.

4 0

3 years ago

An open box will be made from a rectangular piece of cardboard that is 8 in. by 10 in. The box will be cut on the dashed red lin

Anna35 [415]

Answer:

C) 52 in^3

Step-by-step explanation:

The first is to determine the formula of the volume of the box, which would be the following:

V = height * length * width

Knowing that we have a rectangular piece we will determine the maximum volume, we will double a distance x (which will be the height) in the width and length of the piece, therefore as it is on both sides, the length and width are defined from the Following way:

length = 10 - 2 * x

width = 8 - 2 * x

height = x

Now we calculate the volume:

V = x * (10-2 * x) * (8-2 * x)

To determine the maximum volume we will give values to x in order to see how it behaves:

Let x = 2.5

V = (5) * (3) * (2.5) = 37.5

Let x = 2

V = (6) * (4) * (2) = 48

Let x = 1.5

V = (7) * (5) * (1.5) = 52.5

Let x = 1

V = (8) * (6) * (1) = 48

Let x = 0.5

V = (9) * (7) * (0.5) = 31.5

It can be seen that the greatest volume is obtained when the height is equal to 1.5 and its volume is 52.5 in ^ 3

8 0

4 years ago

How would you factor this linear expression? 2x 6

ELEN [110]

2x-6

2(x-3)

therefore 2(x-3)=2x-6

3 0

4 years ago

The sum of two numbers is 90. Their difference is 18. Find the numbers.

Naddik [55]

Answer:

36 & 54

Step-by-step explanation:

By Question :-

Sum of numbers = 90 .
Difference of numbers = 18 .

Let :-

First Number be x .
Second number be y .

According to 1st condition :-

$: \implies$ x + y = 90

According to 2nd condition :-

$: \implies$ x - y = 18

Adding the equations :-

$: \implies$ 2x = 18 + 90

$: \implies$ 2x = 108

$: \implies$ x = 54

Therefore :-

$: \implies$ First number = 54

$: \implies$ Second number = 36

5 0

3 years ago

Read 2 more answers

In the triangle below, the sine of xº is 0.6. What is the sine of y

PilotLPTM [1.2K]

Answer:

The answer is " $\sin x=0.6$ "

Step-by-step explanation:

Please find the attached file of the graph.

Given:

$\to \sin x = 0.6\\\\\to x+y+90=180^{\circ} \\\\\to x+y=90^{\circ} \\\\\to y=90-x\\\\$

Let

$\to \cos y= \cos(90-x) =\sin x=0.6$

8 0

3 years ago