Let's translate each sentence into "Math".
Pineapple = p
Orange = x
is means equal
Pineapple is 7 times as heavy as an orange: p = 7x
Pineapple weighs 870 grams more than orange. p = 870 + x
Substitute p = 7x into the second equation:
7x = 870 + x
Subtract x from both sides
6x = 870
divide by 6
x = 145
The orange weighs 145 grams.
The pineapple weights 7 times the orange = 7(145) = 1015 grams.
ANSWER
B. x=3,y=2
EXPLANATION
The given equations are

and

We add the two equations to eliminate y.
This implies that that:

Simplify:

Divide both sides by 2.

We put x=3 into any of the equations to find y.
Let us substitute x=3 into equation (1) to get:



Divide both sides by -3 to get;

The solution is therefore x=,y=2.
The answer is 60.60dollars
Answer:
(x + 1)(x + 4)
Step-by-step explanation:
We want to factor x² + 5x +4 into two binomial factors. Note that 1*4 = 4 and that 1 + 4 = 5, so:
y = x² + 5x +4 = (x + 1)(x + 4)