please help i don't get it

Answer:

A

Step-by-step explanation:

Given

x² - 14x = 0

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 7)x + 49 = 0 + 49

(x - 7)² = 49 ( take the square root of both sides )

x - 7 = ± [tex]\sqrt{49}[/tex] = ± 7 ( add 7 to both sides )

x = 7 ± 7 , thus

x = 7 + 7 = 14 or x = 7 - 7 = 0

Answer:

3.5

Step-by-step explanation:

Answer:

The volume of the sphere is 20 m

Step-by-step explanation:

Given

Solid Shapes: Cylinder and Sphere

Volume of the cylinder [tex]= 30m^3[/tex]

Required

Volume of the sphere

First, we need to calculate the radius of the cylinder

The formula goes thus

[tex]V = \pi r^2h[/tex]

By substituting 30 for V, we have

[tex]30 = \pi r^2h[/tex]

Divide through by h

[tex]\frac{30}{h} = \frac{\pi r^2h}{h}[/tex]

[tex]\frac{30}{h} = \pi r^2[/tex]

Calculating the volume of the sphere

The formula goes thus

[tex]V = \frac{4}{3}\pi r^3[/tex]

Expand Expression

[tex]V = \frac{4}{3} * \pi r^2 * r[/tex]

Substitute [tex]\frac{30}{h} = \pi r^2[/tex]

[tex]V = \frac{4}{3} * \frac{30}{h} * r[/tex]

Simplify Expression

[tex]V = \frac{4}{1} * \frac{10}{h} * r[/tex]

[tex]V = \frac{40}{h} * r[/tex]

Given that the height of the cylinder and the sphere are equal

This means that the height of the cylinder equals the diameter of the sphere.

Mathematically; This is represented by

h = D

Where D represents diameter of the sphere

Recall that D = 2r (2 * radius)

Substitute 2r for D

h = 2r

Substitute h = 2r in [tex]V = \frac{40}{h} * r[/tex]; This gives

[tex]V = \frac{40}{2r} * r[/tex]

[tex]V = \frac{40r}{2r}[/tex]

[tex]V = 20[/tex]

Hence, the volume of the sphere is 20 m

Answer:

Step-by-step explanation:

Answer:

48

Step-by-step explanation:

6*8 = 48

I've seen you so "Will mark brainliest," many times today. Do not export people if that is what you're doing.

Answer:

Your answer is 48 sq. ft.

Step-by-step explanation:

Why? Because A= L(W) Therefore, A= 8(6)=48

Answer:

x = 6, y = -2

Step-by-step explanation:

x-2y = 10

y = -6x +34

Substitute the second equation into the first for y

x - 2(-6x+34) = 10

Distribute

x +12x - 68 = 10

Combine like terms

13x -68 = 10

Add 68 to each side

13x - 68+68 = 10+68

13x = 78

Divide each side by 13

13x/13 = 78/13

x = 6

Now find y

y = -6x+34

y = -6(6)+34

y = -36+34

 =-2

Answer:

x = 6 y = -2

Step-by-step explanation:

x-2y = 10

x = 10 + 2y

y = -6x +34

y = -6(10 + 2y) + 34

y = -60 - 12y + 34

13y = -26

y = -2

x = 10 + 2(-2)

x = 10 - 4

x = 6

Answer:

Digitalis should expect to lose money from selling processors.

The amount of loss is $112

Step-by-step explanation:

When the processor is not defective the company has 89% chance of making a profit of $383 per processor.

However,the company has 11% chance of a processor being returned ,as a result the company would not make no gain but would lose its cost of producing the affected processors.

cost per processor=selling price-profit=$4500-$383=$4117

outcome=89%*profit-11%*cost per processor=89%*$383-11%*$4117=-$112

Answer:

7^12  or 7 to the 12th power!

Step-by-step explanation:

[tex]7^{14}[/tex] ÷ [tex]7^{2}[/tex] = [tex]7^{12}[/tex]

14-2=12

7 stays as the base so

[tex]7^{12}[/tex]

The solution is, 7^12  or 7 to the 12th power, is the expression which is equivalent to: 7^14 divided by 7^2.

Division is the process of splitting a number or an amount into equal parts. Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.

here, we have,

7^14 divided by 7^2

now, we have to find the expression which is equivalent to: 7^14 divided by 7^2.

so, we have,

7^14 ÷ 7^2

= 7^14 / 7^2

=7^14-2

as, we know that,

14-2=12

so, we get,

7^14-2

=7^12

as, we know,

7 stays as the base so,

7^14 ÷ 7^2 = 7^12

Hence, The solution is, 7^12  or 7 to the 12th power, is the expression which is equivalent to: 7^14 divided by 7^2.

To learn more on division click:

brainly.com/question/21416852

#SPJ3

Answer: the answer choice “d” is correct

Step-by-step explanation:

because the different symbols mean different things and yeah

Answer:

D

Step-by-step explanation:

lesser value -------    < --------This side bigger value {open mouth}

78 < 81

81 is bigger than 78

Answer:

x≥7

Step-by-step explanation:

Since 7 is a closed circle, that means that the symbol will be ≤ or ≥. We can see that the graph is going to the right which means that it is >. So the final inequality is x≥7.

Answer:

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

Step-by-step explanation:

sry before I got confused

x>=7

x is greater or equal (greater than and equal to 7)

Answer:

A: no solution

Step-by-step explanation:

The lines will always be 2 spaces apart

Answer:

A. No solution

Step-by-step explanation:

I graphed the equations on the graph below and noticed that the lines appear to be parallel, which means they don't intersect at any point.

If this answer is correct, please make me Brainliest!

Answer:

34.35 liters

Step-by-step explanation:

Answer:

-2/5

Step-by-step explanation:

Parallel lines have the same slope to each other. So if one line has a slope of -2/5, the line parallel to it will also have a slope of -2/5.

Hope this helps!

Answer:

-2/5

Step-by-step explanation:

The slope of the parallel line is going to be the same as the original line.

Answer:

5

Step-by-step explanation:

im pretty sure its 5

Answer:

6

Step-by-step explanation:

Use the pythagorean theroem,

h^2=p^2+b^2

p^2=h^2-b^2

p=sqrt (10)^2-(8)^2

p=sqrt 100-64

p=sqrt 36

p=6

Answer:

C. The source is credible because it contains facts and information that are accurate.

Step-by-step explanation:

Answer:

17 = x

25 = y

Step-by-step explanation:

Answer:

1. 60

2. 90

Step-by-step explanation:

Answer:

1.

1/5

2.

1/15

Step-by-step explanation:

Answer:

A!!!!

Step-by-step explanation:

Answer:

I believe it is 65 inches.

Step-by-step explanation:

If you add all the surfaces up besides the sides that are not frosted then it is 65 inches.

Answer:

im sorry but google?

Step-by-step explanation:

i guess

Answer:

4.5 pi

Step-by-step explanation:

First find the area of a circle with the same radius

The diameter is 6 so the radius is 1/2 d = 1/2(6) =3

A = pi r^2

A = pi (3)^2

A = 9 pi

This is a semi circle of half a circle so the area is 1/2

A  of the semicircle

9/2 pi

4.5 pi

The exponent tells you how many times ten is to be multiplied by iteslf to equal the number you wish to write. For example, 100 can be written as 10x10 = 102. 10,000 = 10x10x10x10 = 104.

Answer: 10*10^3 or 10^4

Step-by-step explanation:

Answer: Ken Block ??

Step-by-step explanation:

Answer:ken block

Step-by-step explanation:

Answer:

5.95

Step-by-step explanation:

[tex]2\frac{7}{10}=\frac{27}{10}=2.7\\[/tex]

3.25 + 2 7/10 = 3.25 + 2.70 = 5.95

Answer:

Take a picture of the graph too

Step-by-step explanation:

Step-by-step explanation:

The y-intercept will be (0, 1). From that point, go 4 units to the right and 1 unit down. That is your next point. Keep doing that and then connect the points to make a line. Hope this helps!

in order to find the diameter, you multiply the radius times 2.....so you would do 0.8 times 2 which equals 1.6

The diameter of the circular steering wheel is 1.6 feet

The radius of the object is given as:

r = 0.8 feet

Multiply both sides by 2, to determine the diameter

d = 2 * 0.8 feet

Evaluate

d = 1.6 feet

Hence, the diameter of the circular steering wheel is 1.6 feet

Read more about diameter at:

https://brainly.com/question/17692316