2x+7y=2 and 4x+2y=-2 using the elimination method

Answers

Answer 1

Answer: i hope this helps you

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What are the solutions of the equation?0=x^2+ 3x -10
X=5,2
X=-5,-2
X=-5,2
X=5,-2
Pls help me fast if you are fast I will give you the brainliest

Answers

Answer:

X:-5, 2

Step-by-step explanation:

If you factor the expression, it becomes (x+5)(x-2). In order to make each expression in the paranthesis equal to 0, x must be -5 or 2.

4x^2 +28x -32 =0 solve this problem?

Answers

$4x^2+28x-32=0 \ \ \ |:4 \n\n x^2+7x-8=0 \n\n x^2+8x-x-8=0 \n\n x(x+8)-(x+8)=0 \n\n (x+8)(x-1)=0 \n\n \nx+8=0 \n\n \boxed{x=-8} \n\n\n x-1=0 \n\n \boxed{x=1} \n\n\n \boxed{\boxed{S=\{-8;1 \}}}$

we know that if xy=0 then x or/and y=0

4x^2+28x-32=0
factor out the 4
4(x^2+7-8)=0

factor out the x^2+7-8
we must find out what two numbers multiply to get -8 and add to get 7
the numbers are 8 and -1

so 4[(x-1)(x+8)]=0

we know that if exg 4y=0 then y=0
so
therefor
(x-1)(x+8)=0
set each to zero
x-1=0
x=1
x+8=0
x=-8

x could be 1 or -8

Is 49 prime or composite

Answers

If it has any other factors besides ' 1 ' and '49',
then it's composite.

7 is a factor of 49. (In fact, it's two of them.)

So 49 is composite.

Prime because nothing can time to equal it but 1x49.

Explain how to find the number of leftover pencils if Wendy wants to share 37 pencils with 9 people

Answers

1 leftover pencil.
This is because if you share 37 pencils with 9 people, each person will get 4 pencils because 9 times 4 is 36. Then there is 1 left over.

you divide 37 by 9 ( 37 ÷ 9) or you can count by 9's (9 18 27 36 45). 37 ÷ 9 = 4.1 the 1 is the remainder so there's only one pencil left or you can see the closest number is 36 so 37 - 36 = 1

abby makes two different quilts. Each quilts is a square. However, the quilts have diferent perimeter, and areas. Describe the areas and perimeters the two quilts could have

Answers

Answer:

Step-by-step explanation:

In this question we need to assume the side length of each quilt

quilt 1: 3 cm
quilt 2: 4 cm

Quilt 1 has the area of: 3*3 = 9 square cm and the perimeter: 3+3+3+3 = 12 cm

Quilt has has the area of: 4*4 = 19 square cm and the perimeter: 4+4+4+4 = 16 cm

So you can see the quilts have different perimeter, and areas

I would answer this question if I had a picture or something to guide me

An employees initial annual salary is $50,000 per year and the company gives $1,000 raises each year. The annual salary needed to live in the city was $45,000 when he started his job but is increasing 5% each year.Create an equation that models the annual salary in a given year.
Create an equation that models the annual salary needed to live in the city in a given year.