<span>For three numbers to represent lengths of the sides of a triangle, the sum of
each pair must be greater than the remaining side.
A)
3 + 4 = 7
3 + 5 = 8
5 + 4 = 9
B)
2 + 5 = 7
2 + 8 = 10
5 + 8 = 13
C)
2 + 12 = 14
2 + 15 = 17
15 + 12 = 27
D)
3 + 3 = 6
3 + 7 = 10
3 + 7 = 10
In all these, only A have the sum of the numbers greater than the numbers itself. So the answer is A.
</span>
Hello,
A:
2x²-7x-4=0
==>2x²-8x+x-4=0
==>2x(x-4)+1(x-4)=0
==>(x-4)(2x+1)=0
==>(x=4) or (x=-1/2)
B: where is the sign "=" !!!!!!!!!!!!!!!!!!
81x^-1=(9x²+1)(3x+1)(3x-1) I can not go any further.
C)
2x²-32=0
==>x²-16=0
==>(x+4)(x-4)0
==>x=-4 or x=4
D:
where is the sign "="!!!!!!!!!!!!!!!!!!!!!!!!
x^2-7x+12=(x-4)(x-3) but I can not go ant further....
Answer:
To solve for y, you want to use the distributive property
First you want to distribute the 8 through the 3y-5 and the 9 through the y-5
8(3y-5)= 24y-40
9(y-5)= 9y-45
24y-40=9y-45 (get the x on one side, so first add 40 to each side)
24y=9y-5 (now subtract 9y to each side)
15y=-5 (divide both sides by 15)
y= -5/15= -1/3
Hope this helps ;)
0.034 would be the correct answer.
Answer: 9 oranges: bananas
Step-by-step explanation:
The ratio is 3 oranges: 2 bananas. They add up to 5 fruits, so some possible values are 5, 10, 15, 20, 25. We need a value between 8 and 16. This means that we need 15/5 = 3 portions of fruits and since the ratio is 3:2
We multiply this by the original ratio to get 9 oranges: 6 bananas
