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3 years ago

20.00 + .045x =y what is the rate of change for each?

Mathematics

1 answer:

Delicious77 [7]3 years ago

7 0

Answer:

Step-by-step explanation:

20 is a constant, the rate of change of y is 0.045x, so the rate is stated as 0.045

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- 4A-8B.<br> [A=3, B = -1

Bad White [126]

Answer:

-20

Step-by-step explanation:

7 0

3 years ago

An auction company sold 15 handheld computers last month. the final prices (in dollars) at which the items sold are as follows.

matrenka [14]

Hi,

a. construct a stem and leaf plot

Ans

20: 5

21: 3 7

22: 9 9 9 9

23: 1 6

24: 5 7 7 8 8

25: 2

b. summarize what this plot tells you about the data

Ans

This plot tells that most numbers of computers were sold at prices in the range of $220-229 and $240-249. For other prices, sales were lower.

Hoped I Helped

5 0

3 years ago

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What’s the value and what makes the x in the equation -6(x+11)+ 2x = 70 true ?

madreJ [45]

Answer:

x=-34

Step-by-step explanation:

isolate the variable by diving each side by the factors that don't contain a variable.

4 0

3 years ago

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NEED HELP NOW WILL MARK BRAINLIEST What is the measure of the central angle of a circle with radius 60 centimeters that intercep

Elena-2011 [213]

Answer:

15pi/60 = pi/4 hopefully this helps :)

Step-by-step explanation:

Angle in radians = arc / radius

15pi/60 = pi/4

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3 years ago

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A plane left 30 minutes late than its schedule time and in order to reach the destination 1500 km away in time it had to increas

schepotkina [342]

Let x= the usual speed
1500/x would equal how long it usually took the plane to read the destination
1500/(x+100) would equal how long it would take the plane now
So $\frac{1500}{x} - \frac{1500}{x+100} = \frac{1}{2}$ because it would lose 30 minutes already
Simplify:
$\frac{1500(x+100)-1500x}{x(x+100)} = \frac{1}{2}$
$\frac{1500x+150000-1500x}{x^2+100x} = \frac{1}{2}$
$\frac{150000}{x^2+100x} = \frac{1}{2}$
$\frac{300000}{x^2+100x} =1$
$300000= x^{2} +100x

x^2+100x-300000=0

x^2+600x-500x-300000=0

x(x+600)-500(x+600)

(x-500)(x+600)

x=500, x \neq -600
$

The usual speed was 500 hm/hr

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3 years ago