All categories

2 years ago

Describe and correct error in solving the equation 4x+7=x-2, also please show work

Mathematics

2 answers:

Monica [59]2 years ago

8 0

4x+7=x-2
-x -x
3x+7=-2
-7=-7
3x=-9
÷3 =÷3
x=-3

Mila [183]2 years ago

4 0

4x+7=x-2
-x -x
3x+7=-2
-7 -7
3x=-9
3 3 You divide -9 by 3.
x=-3
Your welcome

You might be interested in

In Δ ABC, the sum of the measures of ∠A and ∠B is 47°. what is the measure of ∠C?

Tanya [424]

To determine the measure of angle C. You would solve the equation for X. X+47=180. X= 180-47. X= 133. The measure of angle C is 133 degrees.

8 0

3 years ago

I need help with this plzzzzzzz

zmey [24]

Answer: -4

Step-by-step explanation: If you add all the numbers marked, -7 + -4 + -3 + 2 + 7 you will get -4.

3 0

2 years ago

3) Write the inequality that

masha68 [24]

Answer:

See below

Step-by-step explanation:

Owing represent a negative balance.

<u>So the inequality for this case is:</u>

- 26.00 > - 147.00

3 0

2 years ago

A group of friends wants to go to the amusement park. They have $246.75 to spend on parking and admission. Parking is $14, and t

MAXImum [283]

Answer:8 people can goStep-by-step explanation:117.50 minus 5.50 is 112. then divide by 14. 8

8 0

1 year ago

Choose the graphic representation of the quadratic function f(x) = x2 – 8x + 24.

larisa86 [58]

Refer the attached figure for the graphic representation of the given quadratic equation.

<u>Step-by-step explanation:</u>

Given expression:

$f(x)=x^{2}-8 x+24$

To find:

The graphic representation of the given quadratic function

For solution, plot the graph to the given quadratic equation.

The standard form of the equation is

$y=a x^{2}+b x+c$

When comparing with given quadratic equation,

a = 1, b = - 8, c = 24

Axis of symmetry is $x=\frac{-b}{2 a}$

By applying the values, the axis of symmetry of given equation is

$x=\frac{-(-8)}{2(1)}=4$

The vertex form of quadratic equation is $f(x)=a(x-h)^{2}+k$

Where, (h,k) are the vertex.

Convert the quadratic equation into vertex form.

By completing the square,

$f(x)=x^{2}-8 x+24$

$f(x)=\left(x^{2}-2(4) x+4^{2}\right)-4^{2}+24$

$f(x)=(x-4)^{2}+8$

On comparison,

(h , k) = (4 , 8)

Now, plot the equation with vertex (4,8) [refer attached figure].

4 0

2 years ago