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damaskus [11]
3 years ago
9

A gas station sells regular Faldo line for $2.39 and premium for $2.79 per gallon. The total gas sold 550 for bot types of gasol

ine in one day for a total of 1,344.50 how many gallons of premium gasoline were sold?
Mathematics
1 answer:
Genrish500 [490]3 years ago
5 0
2.39x+2.79y=1344.50  where x is regular and y is premium
x+y=550

U will get x=475 y=75
75 gallon premium 
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dexar [7]

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3 0
2 years ago
Can we combine different functions (quadratic, linear, exponential, cube root) into one piecewise function? If the answer is yes
yanalaym [24]

Answer: yes, because it is useful to describe changes in the behavior of the thing we are describing.

Step-by-step explanation:

A piecewise function f(x) is a function that is "different" depending on the range of the values of x, this is for example:

y = x -----> if x < 0

y = x^2 ----- if x ≥ 0

This is used to represent changes in the behavior of the thing we are describing.

For example, suppose an object that is moving with constant velocity, the velocity graph will be a constant line.

Now, the object suddenly, at a time t = t0 accelerates to a constant acceleration A, now the graph of the velocity is a linear graph with slope equal to A.

So this situation can be represent this with a piecewise function:

V(t) = c -----> if t < t0

V(t) = c + A*t -----> if t ≥ t0

So the answer is yes, we can.

8 0
3 years ago
What is the area of the triangle below?
stira [4]

Answer:

7.5 square units

Step-by-step explanation:

Base of the triangle = 5 units

Height of the triangle = 3 units

Area of the triangle

=  \frac{1}{2}  \times base \times height \\  \\  =  \frac{1}{2}  \times 5 \times 3 \\  \\  =  \frac{1}{2}  \times 15 \\  \\  = 7.5 \:  {units}^{2}

6 0
3 years ago
Read 2 more answers
You own 17 CDs. You want to randomly arrange 5 of them in a CD rack. What is the probability that the rack ends up in alphabetic
amid [387]

The probability that all five end up in alphabetical order is; 1/120.

<h3>What is the probability that the rack ends up in alphabetical order?</h3>

To evaluate the given probability; first, the number of possible arrangements is;

17P5 = 742,560 possible arrangements.

However, the chance of an alphabetical order arrangement in each case is; 1 out of 5! possible arrangements.

Hence, we have that the number of possible alphabetical arrangement is; (1/120) × 742,560 = 6188.

Hence, the required probability is; 6188/742,560 = 1/120

Read more on probability;

brainly.com/question/251701

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5 0
1 year ago
The owner of a factory wants to determine a confidence interval for the average wages at his factory. The population average wag
iVinArrow [24]

4,034.06 ,5,965.94 are confidence interval for the population average wages at the factory.

What is confidence interval estimation?

Your estimate's mean plus and minus the range of that estimate's fluctuation is called a confidence interval.

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The formula for confidence interval estimation is:

μ = M ± Z(sM)

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sM = standard error = √(s2/n)

M = 50000

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μ = M ± Z(sM)

μ = 50000 ± 2.58*375

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μ = 4,034.06 ,5,965.94

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6 0
1 year ago
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