can someone please help with number 9??? i need it for an important grade

Answer:

x=4 and y=−2

Step-by-step explanation:

y=−3x+10;y=−2x+6

Step: Solve y=−3x+10for y:

Step: Substitute−3x+10foryiny=−2x+6:

y=−2x+6

−3x+10=−2x+6

−3x+10+2x=−2x+6+2x(Add 2x to both sides)

−x+10=6

−x+10+−10=6+−10(Add -10 to both sides)

−x=−4

-x/-1 = -4/-1 (Divide both sides by -1)

x=4

Step: Substitute4forxiny=−3x+10:

y=−3x+10

y=(−3)(4)+10

y=−2(Simplify both sides of the equation)

Answer:

Solution is the point (4, -2)

Step-by-step explanation:

use the expression for y from the first equation in the second equation:

then the equation y = - 2 x + 6 becomes:

- 3 x + 10 = - 2 x + 6

add 3 x to both sides

10 = 3 x - 2 x + 6

10 = x + 6

subtract 6 from both sides

x = 4

Now replace x with 4 in the first equation to find y:

y = - 3 x + 10 = - 3 (4) + 10 = - 12 + 10 = -2

Therefore this is the point solution to the system:

(4, -2)

Answer:

15 hours

Step-by-step explanation:

Answer:

10 year old virgin nerddddd

Step-by-step explanation:

Answer:

$51.94

Step-by-step explanation:

Basically just take 6% of 49 and at it up to get your final answer!

Answer:

$51.94

Step-by-step explanation:

49* 1.06= $51.94

Answer:

Step-by-step explanation:

y -5x = 2

10x -3y =9

substitute x for 3/5 and y for -1

-1 -(5*3/5) = 2

(10*3/5) -3(-1) =9

simplify :

-1 -3 =2

6+3 =9

-4 =2 Not true

9=9 True

Conclusion: the point (3/5, -1) is not a solution to the given system of equations

The (f-g)(x) is- 4x²+ 10x

A function in mathematics from a set X to a set Y allocates exactly one element of Y to each element of X. The sets X and Y are collectively referred to as the function's domain and codomain, respectively. Initially, functions represented the idealized relationship between two changing quantities.

Given

f(x) = - x² + 6x -1

g(x)=3x² - 4x - 1

(f-g)(x) = - x² + 6x -1 -(3x² - 4x - 1)

(f-g)(x) = - x² + 6x -1 - 3x² + 4x + 1

(f-g)(x) = - 4x² + 10x

(f-g)(x) = - 4x²+ 10x

To know more about codomain refer to :

https://brainly.com/question/14626586

#SPJ2

Answer:

b.

Step-by-step explanation:

-4 x -8 = 32 (negative and negative = positive) and the sign is greater or equal to, which the answer is equal to

Answer:

The answer is B!

Step-by-step explanation:

-4x-8=32

When you have two negatives when multiplying or dividing the answer will always be a POSITIVE.

Answer:

100 bags

Step-by-step explanation:

60/3=20

15/3=5

5 bags= 20$

1 bag= 4$

100 bags=400$

Answer:

100 bags.

Step-by-step explanation:

60/15=4

This gives us how much each bag costs.

Apply the same concept to 400.

400/4=100

100 bags can be bought with $400.

The value of x is 42 of three parallel lines intersected by two transversal lines

To solve for x in the given scenario of three parallel lines intersected by two transversal lines, we'll first determine the relationship between the corresponding angles.

According to the properties of parallel lines, corresponding angles are congruent. Thus, if we have an equation involving the corresponding angles, we can solve for x.

In this case, we have the equation:

x/35 = 30/25

To solve for x, we can cross-multiply:

25x = 30 * 35

25x = 1050

Dividing both sides by 25:

x = 1050/25

x = 42

Therefore, in the given scenario, the value of x is 42.

To know more about parallel lines click here :

https://brainly.com/question/34433843

#SPJ2

Answer:

Answer:

1 notebook = 5.69 + paper 1.39 + dividers 1.45 + 2 pens 2.38 + pencils2.5

13.41 is the answer

Step-by-step explanation:

Step-by-step explanation:

Answer:

true

Step-by-step explanation:

here this might help a little Use the vertical line test to determine whether or not a graph represents a function. If a vertical line is moved across the graph and, at any time, touches the graph at only one point, then the graph is a function. If the vertical line touches the graph at more than one point, then the graph is not a function.

Answer:

3 & 1/2

Step-by-step explanation:

2•3=6

7-6

1/2

3 whole number

3 & 1/2

Answer:

$7.00

Step-by-step explanation:

The discount is 75% off.  To answer this question, multiply n (the original price) by (1.00 - 0.75):  0.25n = $1.75.

Solving this for n, we get $7.00

Answer:

1/625

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

The average player would hit 4 home runs since 1/3 of 12 is 4

Create your own problem using the following information

ratio is 2:5:6=78

Answer: A

Step-by-step explanation:

Answer:

not sure

Step-by-step explanation:

its wird

Answer:

Blank 1 would be irrational

Blank 2 would be 5 and 7

Step-by-step explanation: I just took the test

Answer:

yes it is you didn't even have to ask the question

Step-by-step explanation:

hope this helped :)

Answer:

Step-by-step explanation:

Answer:

9.21954445

Step-by-step explanation:

or square root of 85

both are correct

Answer:

B

Step-by-step explanation:

She starts each week with 108 phones to fix.

Since this is true, you can use the formula to figure this out.

Hope this helps!

Answer: £67.88

Step-by-step explanation:

From the estimation, we are informed that £3 = €4. This means that:

£1 = €4/3

Therefore, to convert €90.50 to pounds will then be:

= 90.50 ÷ 4/3

= 90.50 × 3/4

= 90.50 × 0.75

= 67.875

= £67.88

Answer:

x = 5/2 + sqrt(61)/2 or x = 5/2 - sqrt(61)/2

Step-by-step explanation:

Solve for x over the real numbers:

x^2 - 5 x - 6 = 3

Hint: | Solve the quadratic equation by completing the square.

Add 6 to both sides:

x^2 - 5 x = 9

Hint: | Take one half of the coefficient of x and square it, then add it to both sides.

Add 25/4 to both sides:

x^2 - 5 x + 25/4 = 61/4

Hint: | Factor the left hand side.

Write the left hand side as a square:

(x - 5/2)^2 = 61/4

Hint: | Eliminate the exponent on the left hand side.

Take the square root of both sides:

x - 5/2 = sqrt(61)/2 or x - 5/2 = -sqrt(61)/2

Hint: | Look at the first equation: Solve for x.

Add 5/2 to both sides:

x = 5/2 + sqrt(61)/2 or x - 5/2 = -sqrt(61)/2

Hint: | Look at the second equation: Solve for x.

Add 5/2 to both sides:

Answer: x = 5/2 + sqrt(61)/2 or x = 5/2 - sqrt(61)/2

Answer:

the first one

Step-by-step explanation:

Answer:

Step-by-step explanation:

Since all sides are the same they are congruent.