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puteri [66]
3 years ago
15

PLS HELP ME WITH 3! THANK YIU SO MUCH!! (Random answers gets moderated.)

Mathematics
1 answer:
kirill115 [55]3 years ago
8 0
6 {x}^{2} - 7x - 5 \\ 6 {x }^{2} + 3x - 10x - 5
3x(2x + 1) - 5(2x + 1) \\ (3x - 5)(2x + 1)
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The sum of thirteen and twice a number is seven less than six times a number. What is the number?
DiKsa [7]
The equation is 2x+6=x-7
then we solve it, 2x-x=-7-6
so x=-13
5 0
3 years ago
PLEASE HELP NEED!!!!
xenn [34]

Step-by-step explanation:

Make the percentages into decimals by dividing by 100. Find germany by subtracting japan and USA from 1

Japan is 0.53

USA = 0.37

Germany = 0.1

8 0
3 years ago
The game that you want to buy costs $34.95. It is on<br> sale for 20% off. What is the sale price?
lesya692 [45]

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27.96

Step-by-step explanation:

7 0
2 years ago
If AC=5cm, BC=12cm, and m AC= 40 degrees what is the radius of the circumscribed circle
melamori03 [73]
Let's assume they meant C=40 degrees.  With an angle like that they're asking for approximation; we'll oblige.

The circumradius is the product of the triangle sides divided by four times the area.

Here we have remaining side given by the Law of Cosines.

AB^2 = AC^2 + BC^2 - 2\ AC \ BC \cos C

AB^2 = AC^2 + BC^2  - 2 AC \ AB \cos C = 5^2 + 12^2 - 2(5)(12) \cos 40^\circ

AB = \sqrt{  169 - 120 \cos 40 ^\circ}  \approx 8.77921789

The area is \frac 1 2\ AC \ BC \sin C = \frac 1 2 (5)(12) \sin 40^\circ \approx 19.283628



The circumradius is  r \approx \dfrac{(5)(12)(8.77921789 )}{ 4 (19.283628) }  = 6.829019329




5 0
3 years ago
Is x2 - 2 a factor of x4 - 2x3 + 3x2 - 4x + 5 ?
SashulF [63]
Yes it x2 is a factor because at some point and time 2x would cross 4x
6 0
3 years ago
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