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Yakvenalex [24]
3 years ago
6

Please help if u know

Mathematics
1 answer:
Schach [20]3 years ago
5 0

Answer:

(3x - 5)(x + 1)

Step-by-step explanation:

We need to factor 3x² - 2x - 5.

In order to do this, we must look at the factors of 3 and -5:

3 = 1 * 3

-5 = 1 * -5

Somehow, we need to pair up these so that they add to -2. We realize we can do this by multiplying 1 by -5 and adding that to 1 * 3:

1 * -5 + 1 * 3 = -5 + 3 = -2

So, we have (3x - 5)(x + 1).

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Find the sum of the measures of the interior angles of a polygon with 41 sides
Zolol [24]

Answer:

the formula is (n-2)180 degrees

so its 7020

8 0
2 years ago
The sum of two numbers is 240. If one number is twice the other number, find the two numbers.
Deffense [45]

Answer:

The sum of two numbers is 240. The larger number is 6 less than twice the smaller. Find the numbers.

----------

Let the smaller be "x" ; Larger is "2x-6"

EQUATION:

x + 2x-6 = 240

3x= 246

x = 82 (smaller)

2x-6 = 158 (larger)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The value of y varies directly with x. If x = 6, then y = 27. What is the value of y when x = 10 ?
Alik [6]
B - 45 because 27 divided by 6 is 4.5 and then 10x4.5=44
7 0
2 years ago
3/7 r + 5/8 s when r = 14 and s = 8
Lady bird [3.3K]
The answer to your question is 11
5 0
3 years ago
Please help me! What is x and y? Thank you!
Ivahew [28]

Answer:

x=3. y=6

Step-by-step explanation:

So, to solve x and y, we need to take the equivelent sides of the two triangles, take their equations, and solve them.

So to find what x equals, we can take the 13, and make it equal to the 4x+1:

13=4x+1

Subtract the one from both sides:

12=4x

Divide both sides by 4:

3=x

Or

<u>x=3</u>

So we know the x value is 3.

Now lets solve for y using the bottom equations:

2x+y=8x-2y

Subtract 1y from both sides:

2x=8x-3y

Subtract 8x from both sides:

-6x=-3y

Divide both sides by -6:

x=1/2y

So we already know that x=3, lets plug that in for x, and solve for y:

3=1/2y

Or

1/2y=3

Multiply both sides by 2 to get 1y:

<u>y=6</u>

So we know that y is equal to 6.

Hope this helps!

7 0
3 years ago
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