Answer:
- 20 seconds
- 70, 30, 20
Step-by-step explanation:
1. From the first floor to the 4th floor is a distance of 3 floors. From the first floor to the 16th floor is a distance of 15 floors, a distance that is 5 times as far as the first trip. We expect the second trip to take 5 times as long, or ...
(4 s) × 5 = 20 s
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2. The smallest and largest ratio number sum to 2+7=9. That sum exceeds twice the remaining ratio number by 9-2×3 = 3. Since this difference represents a difference of 30, each of the original numbers must be 30/3 = 10 times its corresponding ratio number.
The three numbers are 7×10 = 70, 3×10 = 30, and 2×10 = 20.
<em>Check</em>
(70 +20) -2×30 = 30 . . . true
Answer: 70 grams of aluminum
step by step: 28 students times 10 cans because each student brought 10. that equals 280, so we devide 280 by 4 which is how man boxes they have which gives you 70.
The value of x is -0.01.
<h2>Linear system</h2>
It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.
<h3>Simplification</h3>
Simplification is to make something easier to do or understand and to make something less complicated.
Given
The equation is 102x + 11 = (x + 6)2 – 2.
<h3>To find </h3>
The value of x.
<h3>How to find the value of x?</h3>
The equation is 102x + 11 = (x + 6)2 – 2.
On simplifying,
102x + 11 = 2(x + 6) - 2
102x + 11 = 2x + 12 - 2
102x + 11 = 2x + 10
102x - 2x = 10 - 11
100x = -1
x = -0.01
Thus, the value of x is -0.01.
More about the linear equation link is given below.
brainly.com/question/20379472
Answer:
slope (m) = 1 and intercept = -4
Step-by-step explanation:
comparing with Y = mX - c
Answer:
.2 miles per minute or .2x
Step-by-step explanation:
it move one tenth in half a minute so it moves 2 tenths in a minute.