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Elanso [62]
3 years ago
11

What is the factorization of 8x2+13x-6

Mathematics
2 answers:
poizon [28]3 years ago
6 0
Hope this helps.

 8x^2 +13x -6 =(8x-3)(x+2)

UNO [17]3 years ago
5 0

Answer:

(x+2)(8x-3)

Step-by-step explanation:

We have been given an expression 8x^2+13x-6. We are asked to factor our given expression.

We will use splitting the middle term method to factor our given expression. We need to numbers whose sum is 13 and whose product is -48. We know such two numbers are 16\text{ and }-3.

8x^2+16x-3x-6

Make two groups:

(8x^2+16x)+(-3x-6)

Factor out greatest common factor of each group:

8x(x+2)-3(x+2)

(x+2)(8x-3)

Therefore, the factored form of our given expression would be (x+2)(8x-3).

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Elena has 80 trading cards in her collection. If 15%
shepuryov [24]
The answer for the first one is 12. 15% of 80 is 12. The second one I can’t answer because it is not very clear and is cut off
3 0
3 years ago
Extra points! Please just show me how to set this up so I can solve, I don't need the answer. Thank you!
GREYUIT [131]

Answer:


Step-by-step explanation:

Think of of this as a function in which the number of pounds is a function of the number of hours. Each piece of given information is a point. Each point has the format (x, y) = (hours, pounds), where hours is x and is the independent variable, and pounds is y and is the dependent variable.

You have two points (4.5, 1445) and (7, 2320). First find the slope of the line that passes through those two points. Use the slope formula,

m = (y2 - y1)/(x2 - x1).

Then using the slope and the point-slope equation of a line, find the equation of the line. The point-slope equation of a line is

y - y1 = m(x - x1),

where m = slope, and the point is (x1, y1).

Try it. If you have questions or need extra help, just comment.

4 0
3 years ago
Please help quarter ends tomorrow and I don’t know what to do I’m failing all my classes
Nutka1998 [239]

Step-by-step explanation:

x = -10, y = 10

y= -4x+4

m1×m2 = -1

-4 × m2 = -1

m2 = 1/4

y-y1 = m(x-x1)

y-10 = 1/4(x+10)

y-10 = 1/4x +10/4

(×4)

4y-40=x+10

4y=x+50

x-4y+50=0

3 0
3 years ago
1)cot a/2 -tan a/2 = 2 cot a<br>2) cot b/2 + tan b/2= 2 cosec b<br> prove​
VladimirAG [237]
1)

LHS = cot(a/2) - tan(a/2)

= (1 - tan^2(a/2))/tan(a/2)

= (2-sec^2(a/2))/tan(a/2)

= 2cot(a/2) - cosec(a/2)sec(a/2)

= 2(1+cos(a))/sin(a) - 1/(cos(a/2)sin(a/2))

= 2 (1+cos(a))/sin(a) - 2/sin(a)) (product to sums)

= 2[(1+cos(a) -1)/sin(a)]

=2cot a

= RHS

2.

LHS = cot(b/2) + tan(b/2)

= [1 + tan^2(b/2)]/tan(b/2)

= sec^2(b/2)/tan(b/2)

= 1/sin(b/2)cos(b/2)

using product to sums

= 2/sin(b)

= 2cosec(b)

= RHS
8 0
3 years ago
Expand and reduce (2+√3)^2
nasty-shy [4]

Answer:

7 + 4\sqrt{3}

Step-by-step explanation:

note that \sqrt{a} × \sqrt{a} = a

Given

(2 + \sqrt{3} )² = (2 + \sqrt{3} )(2 + \sqrt{3} )

Each term in the second factor is multiplied by each term in the first factor, that is

2(2 + \sqrt{3} ) + \sqrt{3}(2 + \sqrt{3} ) ← distribute both parenthesis

= 4 + 2\sqrt{3} + 2\sqrt{3} + 3 ← collect like terms

= 7 + 4\sqrt{3}

6 0
3 years ago
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