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ArbitrLikvidat [17]
3 years ago
7

A sand dune stands 5 feet above sea level. The hill is eroding at a rate of 1 foot per 20 years. Let y represent the height of t

he sand dune after x years. Which equation represents the situation?

Mathematics
2 answers:
In-s [12.5K]3 years ago
8 0

Answer:

y=-1/20x+5

Step-by-step explanation:

Andrews [41]3 years ago
3 0
The situation will be represented by linear equation, this is given by:
y=ax+b
where:
a=slope=rate
b=y-intercept
from our situation:

a=-1/20
b=5 ft
thus the equation modeling the situation will be:
y=-1/20x+5

Answer: y=-1/20x+5
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2y to the power of 4 x 5y to the power of 3
Yakvenalex [24]

Answer:

(2•5y to the 7th power)

Step-by-step explanation:

Step 1:  (2y to the 4th power • 5) • y to the 3rd power

Step 2:  (2•5y to the 4th power) • y to the 3rd power

Step 3:  3.1    y to the 4th power multiplied by y to the 3rd power = y to the  (4 + 3) power = y to the 7th power

Final answer:  (2•5y to the 7th power)

6 0
3 years ago
What’s the slope for (19,-16) (-7,-15)
12345 [234]
Slope=
m=(y1-y2)/(x1-x2)
m=(-16--15)/(19--7)
m=(-16+15)/(19+7)
m=(-1)/(26)
Slope is -1/26
7 0
3 years ago
A set of data has a normal distribution with a mean of 46 and a standard deviation of 7. Find the percent of data within the fol
kvasek [131]

Answer:

50%

the mean (46) marks the halfway point, so over the mean is 50% and under the mean is 50%

7 0
1 year ago
Can someone help me with this question? Just to let you know C is not the correct answer. I am giving a branliest to the person
son4ous [18]

9514 1404 393

Answer:

  A.  Initial value 12, rate of change -2

Step-by-step explanation:

We note that the x-values in the table go up by 1 and the y-values go down by 2. That "down by 2" for "up by 1" is the rate of change: -2/1 = -2.

If we extend the table upward one more row, we have x=0 and y=12. That is, the "initial value" is 12.

The initial value is 12; the rate of change is -2.

8 0
2 years ago
Guys please do this question it’s at the bottom
saul85 [17]
7^2 - 3(4-2)^0 - 2(7+3) + 3^2
= 49 - 3 - 20 + 9
= 35
3 0
3 years ago
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