MATHEMATICS HIGH SCHOOL

Y=-2x
x+y=3
What is the value of x?

Answers

Answer 1
Answer:

Step-by-step explanation:

x+y=3

y=2x

x+2x=3

x=3-2x

it's your required answer

Answer 2
Answer:

Answer:

x=-3

If you need to find the value of y than substitute x=-3 into equation (1) .

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m = 2

- I have several questions like this that I have no clue how to solve. This is all the information provided by my lesson.

Answers

y - y1 = m(x - x1)
slope(m) = 2
(0,0)...x1 = 0 and y1 = 0
now its just a mater of subbing
y - 0 = 2(x - 0) <===

Ella bought 11/12 of a pound of green grapes and 3/4 of a pound of red grapes. How much more did the green grapes weigh than the red grapes?

Answers

Answer:

1/6

Step-by-step explanation:

11/12-3/4

=11/12-9/12

=2/12

=1/6

Answer:

2/12 or 1/6

Step-by-step explanation:

11/12-3/4

First convert the 3/4 to 9/12 becase the numbers have to have the same denominater.

3/4=9/12

11/12-9/12=2/12

Simplified would be 1/6

What is the root of the polynomial equation x(x-2)(x+3)=18 ? Use a graphing calculator and a system of equations.–3
0
2

Answers

Answer:

3 is the root of the equation.

Step-by-step explanation:

We have to find the root of the polynomial equation x(x-2)(x+3)=18.

We can find the same by using a graphing utility and the system of equations.

We can make two equations which are given by

y=x(x-2)(x+3)....................(1)\n\ny=18

Now, we plot the graph of these equations and the x-coordinate of the intersection point will be the root of the equation.

the graph has been shown in the attached file.

The intersection point is (3, 18) and the x-coordinate is 3.

Therefore,  3 is the root of the equation.

It has four choses and you didn't show the right one, answer is 3.

3(3-2)(3+3)=18

3(1)(6)=18

3*6=18

The area of a rectangle is 28 square miles. The length is 7 miles.What is the width of the rectangle?

Answers


the width of the rectangle is 4 miles
4 mi. because  L times W = H

I need help please i need this

Answers

Answer:

the first one is 24

Step-by-step explanation:

Find the two numbers the quotient is between. Then estimate the quotient. 75 divided by 4

Answers

Answer:

The quotient will be between 18 and 19.

Estimated quotient will be 18.75

Step-by-step explanation:

The closest number to 75 which is divisible by 4 and less than 75 is :  72  and

the closest number to 75 which is divisible by 4 and greater than 75 is :   76

Now,  72 / 4= 18 and 76/ 4= 19

That means, the quotient for (75/4) will be between 18 and 19.


As, 75 is 1 less than 76, so the quotient will be (1)/(4) or 0.25 less than 19.

So, the quotient will be:  19-0.25= 18.75
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