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3 years ago

Pls just answer if you know, don't guess or spam. Thanks

Mathematics

1 answer:

Andreyy893 years ago

4 0

Answer:

Step-by-step explanation:

If you work through it as if you were doing polynomial long division you just have to work through the first step and then compare it to the answer. In polynomial long division you always divide the leading term of the dividend and divide it by the leading term of the divisor. In this case 24x^2 /ax = -8x. So this is a pretty simple calculation to find what a is. the xs cancel out so you get 24x/a = -8x and from here you can divide both sides by x, multiply both sides by a and then divide both sides by -8.

24x/a = -8

24/a = -8

24 = -8a

-3 = a

Now just follow through with the whole long division to make sure, but using this method should get you the right answer.

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Make 24 using the numbers 1,5,7,8

Bad White [126]

Answer:

1+7+8+8

Step-by-step explanation:

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3 years ago

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What are all the factors of 54? O 1,2, 6, 9, 26, 54 O 1,2, 6, 9, 27, 54 O 1, 2, 3, 6, 9, 18, 26, 54 O1,2, 3, 6, 9, 18, 27, 54.

aivan3 [116]

Answer:

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3 years ago

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Complete the square x^2-10=16

Hatshy [7]

Answer:

(x - 5)² = 41

Step-by-step explanation:

* Lets revise the completing square form

- the form x² ± bx + c is a completing square if it can be put in the form

(x ± h)² , where b = 2h and c = h²

# The completing square is x² ± bx + c = (x ± h)²

# Remember c must be positive because it is = h²

* Lets use this form to solve the problem

∵ x² - 10x = 16

- Lets equate 2h by -10

∵ 2h = -10 ⇒ divide both sides by 2

∴ h = -5

∴ h² = (-5)² = 25

∵ c = h²

∴ c = 25

- The completing square is x² - 10x + 25

∵ The equation is x² - 10x = 16

- We will add 25 and subtract 25 to the equation to make the

completing square without change the terms of the equation

∴ x² - 10x + 25 - 25 = 16

∴ (x² - 10x + 25) - 25 = 16 ⇒ add 25 to both sides

∴ (x² - 10x + 25) = 41

* Use the rule of the completing square above

- Let (x² - 10x + 25) = (x - 5)²

∴ (x - 5)² = 41

3 0

3 years ago

30 POINTS IF U CAN HELP PLEASE. in the figure below, a tangent and a secant are drawn to a circle from the exterior point E. Sup

dimulka [17.4K]

Answer:

19.5 = CD

Step-by-step explanation:

The square of the tangent = the the whole secant times the outside part of the secant.

EG²= (ED)(EC)

13² = (26)(EC)

169 = 26EC

169/26 = EC

6.5 + EC

Now ED = EC + CD

26 = 6.5 + CD

26 - 6.5 = CD

19.5 = CD

3 0

2 years ago

Please draw and label a figure for this sentence in geometry

Kaylis [27]

Answer:

First, plot points A & B on a graph.

Collinear just means 3 or more points in a straight line (because just 2 points are always collinear, since a straight line can always be drawn through two points.

The instructions don't state a specific area in which points C & D have to be in, so you can put them anywhere, as long as they are collinear with each other, but not any other points,

i.e. putting three units up and two units left of points A & B

So let's make up some points for C & D that are on a straight line.

Remember, this line does not have to be horizontal! As long as it's a straight line, any direction will do.

Here are some points that you can choose from:

C(-1, 1); D(-1, -1)
C(4, 5); D(4, -5)
C(3, 4); D(3, 5)
Anything that doesn't fall on x=2 or y=±3.

For "F" just pick a set of coordinates off to the side and label it

F(-3,-6)
F(-4, 8)
F(6, -7)

You can even use half values if you want:

(0.5, 3.2)
(1.2, -4.1)
(-9.1, -0.2)

As long as your plotted points meet the criteria:

C & D are Collinear
A, B, C, D, & F must not land on the same straight line.

3 0

3 years ago