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3 years ago

Pls help! solve the equation by completing the square. 0= x^2 - 14x

Mathematics

2 answers:

lesya [120]3 years ago

8 0

Answer:

X will be 14,0

Step-by-step explanation:

..........................................

$0 = {x}^{2} - 14x \\ 14x = {x }^{2} \\ x = 14 \: or \: 0$

Sedaia [141]3 years ago

3 0

Answer:

B. x= 0,14

Step-by-step explanation

1. 0= x^2 - 14x

2. x^2 - 14x=0

3. (b/2)^2= (-7)^2

4. x^2 - 14x +49= 49

5. (x-7)^2=49

6. x= 0, 14

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100 points + brainiest

Scrat [10]

Answer:

35 grams of 11.43% solution

Step-by-step explanation:

The end solution has same volume as initial volumes of mixture.

10 + 25 = 35 g

The concentration of solution is calculated as below

10*0.15 + 25*0.1 = 4 g
4 / 35*100% = 11.43% (rounded)

6 0

3 years ago

Graph the quadratic functions y = -2x^2 and y = -2x^2 + 4 on a seperate piece of paper. Using those graphs, compare and contrast

Andrei [34K]

Answer:

Shape is parabolic and there is translation of 4 unit upward.

Step-by-step explanation:

Given : The quadratic functions $y = -2x^2$ and $y = -2x^2 + 4$

To find : Using those graphs, compare and contrast the shape and position of the graphs?

Solution :

Let, $y_1= -2x^2$

and $y_2= -2x^2 + 4$

Now, we plot these two equations.

The graph of $y_1= -2x^2$ is shown with green line with vertex(0,0)

The graph of $y_2= -2x^2 + 4$ is shown with violet line with vertex(0,4)

We have seen in the graph that the graph of $y_2$ is shifted 4 unit upward with the graph of $y_1$

Transformation to upward,

f(x)→f(x)+b , the graph of f(x) is shifted upward by b unit.

The shape of both the graph is parabolic but the position is different.

There is a 4 unit upward translation.

Refer the attached graph below.

6 0

3 years ago

Read 2 more answers

What is nine tenths as a percentage?

Ronch [10]

I think the answer would be 90%

4 0

3 years ago

4. Consider the mailbox shown below. It consists of a square prism for the main pole, a rectangular prism for the main box and h

IrinaK [193]

Answer:

Too many answers could be correct

Step-by-step explanation:

This one is hard because it will depend on what numbers you pick for each measurement.

-----------------------------------------------------------------------------

if a = 1, b = 2, c = 3, d = 4, and e = 5

find the volume for all the shapes

The post

V = lwh = (1)(1)(2) = 2

The bottom of the mailbox

V = lwh = (3)(4)(5) = 60

The top of the mailbox

V = πr²h = (3)(5)π = 15π = 48.2

Then add them all together:

2 + 60 + 48.2 = 110.2 is the total Volume

4 0

3 years ago

78>45x(2(5+8)<br><br> solve for x<br><br> explain for brainliest

mixas84 [53]

Answer:

Answer is below

Step-by-step explanation:

Simplify both sides of the inequality.

$78>1170x$

Flip the equation.

$1170x$

Divide both sides by 1170.

$\frac{1170x}{1170}$

6 0

3 years ago