Answer:
The ratio of apples to peaches is 2 to 9.
Step-by-step explanation:
For every 1 apple, there are 3 bananas.
For every 3 peaches, there are 2 bananas.
To compare apples to peaches, we need to make the bananas in each of the proportions equal.
(1 apple = 3 bananas ) x 2 --> 2 apples= 6 bananas
(3 peaches = 2 bananas) x 3 --> 9 peaches= 6 bananas
Now that the bananas are equal and the other fruits are proportionate to the number of bananas, we can see that for every 2 apples there are 9 peaches.
Answer:
11. 
12. 
13. 
Step-by-step explanation:
11. 
Using Formula:
12. 
Using Formula:
13. 
Using Formula:
Answer:
There are 5 cats and 6 children
Step-by-step explanation:
Let x = number of cats
Let y= number of children
Counting heads gives 11
X+Y = 11 .....eq1
Counting feet gives 32
Cats has 4legs,child has 2 legs
4X + 2Y=32 ....eq2
X = 11 - Y
Put in eq2
4(11-Y) + 2Y = 32
44 - 4Y + 2Y=32
12=2Y
Y=12/2=6
Y=6= Children
Put Y=6 in eq2
X + 6=11
X=11-6=5
X= 5 = cats
If ( x - 1 ) * ( x + 3 ) = 0 => x = 1 or x = -3;
But, (x-1)(x+3)=1 => x^2 + 3x -x - 3 = 1 => x^2 + 2x - 4 = 0;the discriminant is 2^2 - 4 * 1 * ( -4 ) = 20 => the solutions are x1 =
( - 2 +
) / 2 ; x2 = - 2 -
) / 2;
Answer:
I've been trying to figure this out with out a chart and i keep confusing myself
Step-by-step explanation:
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