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In-s [12.5K]
3 years ago
6

20 POINTS!!!

Mathematics
1 answer:
Anestetic [448]3 years ago
3 0
Only b because A is correct
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68. Solve: 46x - 10) = 8x + 40<br>A 0<br>B.5/2<br>ina<br>c. 23<br>D. 5​
Artist 52 [7]

Solve: 4(6x - 10) = 8x + 40

A 0

B.5/2

c. 23

D. 5​

<h3><u>Answer:</u></h3>

Option D

The solution to given equation is x = 5

<h3><u>Solution:</u></h3>

Given that we have to solve the given equation

4(6x - 10) = 8x + 40

Let us solve the above expression and find value of "x"

Multiplying 4 with terms inside bracket in L.H.S we get,

24x - 40 = 8x + 40

Move the variables to one side and constant terms to other side

24x - 8x = 40 + 40

Combine the like terms,

16x = 80

x = \frac{80}{16} = 5

Thus solution to given equation is x = 5

3 0
4 years ago
Who can answer this? I’ll mark brainliest!!
Vesna [10]

Answer:

y = 0.48(x - 0.5)² - 3

y = 0.48(x² - x - 6)

Step-by-step explanation:

From the graph the zeros are

x = {-2, 3}

The x coordinate of the vertex is the midpoint of the roots

x = (-2 + 3) / 2

x = 0.5

The y coordinate of the vertex is

y = -3

vertex = (0.5, -3)

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

Merhod I - vertex

Vertex form is

y = a(x - h)² + k

plug in the vertex

y = a(x - 0.5)² - 3

to find a plug in either root

using x = 3

0 = a(3 - 0.5)² - 3

0 = a(2.5)² - 3

0 = 6.25a - 3

3 = 6.25a

a = 3/6.25

a = 0.48

y = 0.48(x - 0.5)² - 3

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

Method II - roots

y = a(x + 2)(x - 3)

-3 = a(0.5 + 2)(0.5 - 3)

-3 = a(2.5)(-2.5)

-3 = -6.25a

3/6.25 = a

0.48 = a

y = 0.48(x + 2)(x - 3)

Expand

y = 0.48(x² - x - 6)

5 0
3 years ago
What is the length of the side of a cone if the radius of the base is 12 and the height is 20 URGENT IMPORTANT P.S. THIS IS NOT
DanielleElmas [232]

Answer:

l=r2+h2=122+202≈23.32381

Step-by-step explanation:

6 0
3 years ago
What is the difference of the polynomials <br> (5x^3+4x^2)-(6x^2-2x-9)
Alik [6]
So start by putting the negative sign into the second polynomial.
-(6x^2-2x-9)
-6x^2+2x+9
then combine like terms with the first polynomial
5x^3+4x^2-6x^2-2x+9
and you will get
5x^3-2x^2+2x+9
Hope this helps you.
5 0
3 years ago
K2 + 3k + 2 = (k2 + k) + 2 ( __________ )<br><br> k + 1<br><br> k + 3<br><br> k + 2
Angelina_Jolie [31]
It’s k+1 Ply it in, multiply, combine.
8 0
3 years ago
Read 2 more answers
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