Answer:
x = 12
Step-by-step explanation:
Given
= ( cross- multiply )
15x = 180 ( divide both sides by 15 )
x = 12
A. 60mph
B. 12 customers per day
C. 2.5 meters per sec
D. 1.59$ per pound
We divide to find each unit rate.
(e.g 420/7=60)
(360/30=12)(40/16=2.5)(7.95/5=1.59)
Answer: See Below
<u>Step-by-step explanation:</u>
y = a(b)ˣ where
- a: initial population (starting point)
- b: growth rate
- x: number of hours
- y: final population
<u>Part 1 </u>
Given: a = 1, b = 1.5 → y = 1(1.5)ˣ
Given: a = 1, b = 1.5, y = 500,000
to take over Antelope Valley
<u>Part 2</u>
Given a = 1, b = 2 → y = 1(2)ˣ
Given: a = 1, b = 2, y = 500,000
to take over Antelope Valley
The equation based on the information given will be 2x⁴ + 9x³ - x⁴ - 36x - 16 = 0
<h3>How to illustrate the error?</h3>
It should be noted that the information is simply to compute the value properly. This will go thus:
(x + 4)(x + 2)(2x + 1)(x - 2) = 0.
She multiplied (x + 2)(x - 2) correctly and got x² - 4.
She then made a mistake in multiplying (x + 4)(2x ,+ 1).
Therefore, the second step should be (x² - 4)(2x² + 9x + 4).
The next step will be:
2x⁴ + 9x³ + 4x² - 8x⁴ - 36x - 16 = 0
Therefore, the equation based on the information given will be 2x⁴ + 9x³ - x⁴ - 36x - 16 = 0
Learn more about equations on:
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Answer:
On 3 gallons, he could travel 75 miles
Step-by-step explanation:
50 / 2 = 25 miles per gallon
25 * 3 = 75miles