Answer:
x = -28
Step-by-step explanation:
−1/4x=7
Multiply each side by -4 to isolate the variable
-4 * −1/4x= -4*7
−1/4x=7
Answer:
The ratio is 3 : 2.
Step-by-step explanation:
42 cm : 28 cm
= 21 : 14 (Divide both sides by 2)
= 3 : 2 (Divide both sides by 7)
Answer:
96
Step-by-step explanation:
288 ÷ 9 = 32
32 × 3 = 96
<h3>Answer:</h3>
75p + 150(10) = 100(p + 10)
<h3>Explanation:</h3>
Mixture problems such as this can be solved by writing an equation that expresses the total cost of the mixture in terms of the costs of the constituents.
Here, the cost (in cents) of p pounds of cashews will be 75p. The cost (in cents) of the 10 pounds of pecans at $1.50 per pound will be 150(10). The total cost of p+10 pounds of the mixture is desired to be 100(p+10).
The equation of the 1st selection is appropriate. It tells that the prices of the contributing nuts add to give the price of the mixture, just as you want:
75p + 150(10) = 100(p+10)