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3 years ago

Which of the following is the most appropriate unit to describe the rate of the cost of gasoline?

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

6 0

Answer:

Dollars per gallon, because the dependent quantity is the dollars.

Step-by-step explanation:

Dollars is the dependent quantity because it depend on the gallons of gas we have pumped and changes accordingly. The volume of gasoline is an independent variable which price depends on.

A dependent variable is one, who depends on other entities. If the value of one entity changes, the value of the dependent variable also changes.

malfutka [58]3 years ago

3 0

Dollars per gallon because the dependent quantity is the dollars

Dollars is the dependent quantity because the amount you pay depends on how many gallons you've pumped.

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Answers because I need help

kramer

Answer:

f(x)

Step-by-step explanation:

the function f(x) crosses the y-axis higher than either of the other functions, therefore it has the largest y-intercept

6 0

3 years ago

Read 2 more answers

A bank loaned out 16,000 $, part of it at the rate of 6% per year and the rest at 14% per year. If the interest received in on

MakcuM [25]

Answer:

This question requires a comparison between two different variables 6% and 16% values. If we let x=$ loaned on 6% loans and y=$ loaned on 16% loans, then we can relate two equations.

0.06x + 0.16y = $1500 --> referencing the interest earned from each percentage loaned.

x + y = $16000 --> referencing the total amount of money loaned out.

Rearrange either equation and substitute for a value in the other equation or use elimination to determine each individual variable.

Step-by-step explanation:

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3 years ago

Find the discriminant and determine the nature of the roots to the quadratic equation

Katen [24]

№17
$x^{2} +6x-7=0 \\ D=6 ^{2} -4*(-7)=36+28=64=8 ^{2} \\ \\ x_{1} = \frac{-6+8}{2} =1 \\ \\ x_{2} = \frac{-6-8}{2} =-7$
Answer: x₁ = 1
   x₂ = - 7

№18
$2 x^{2} -3x+4=3 \\ 2 x^{2} -3x+4-3=0 \\ 2 x^{2} -3x+1=0 \\ \\ D= -3 ^{2} -4*2=9-8=1 \\ \\ x_{1} = \frac{3+1}{2*2} = \frac{4}{4} =1 \\ \\ x_{2} = \frac{3-1}{2*2} = \frac{2}{4} =0.5$
Answer: x₁ = 1
     x₂ = 0,5.

№19
$2 x^{2} -4x-5=0 \\ D=-4 ^{2} -4*2*(-5)=16+40=56 \\ \\ x_{1}= \frac{4+ \sqrt{56} }{2*2} = \frac{4}{4} + \sqrt{ \frac{56}{16} } =1+ \sqrt{3.5} \\ \\ x_{2} = \frac{4- \sqrt{56} }{2*2} = \frac{4}{4} - \sqrt{ \frac{56}{16} } =1- \sqrt{3.5} 
$
Answer: x₁ = 1 + √3.5
     x₂ = 1 - √3.5

3 0

3 years ago

Jen is 4/10 meters taller than her sister. Her sister is 9/10 meters tall. How tall is Jen?

mariarad [96]

Add 4/10 to 9/10.

9/10 + 4/10 = 13/10

Simplify 13/10 into a mixed number by subtracting 10 from the numerator and turning it into a whole.

13/10 ⇒ 1 3/10

<h2>Answer:</h2>

<u>Jen is </u><u>1 3/10 meters</u><u> tall.</u>

5 0

3 years ago

Use the dropdown menus to write an equation with infinitely many solutions.

nika2105 [10]

Answer:

4(2x + 3) - x = 7x + 12

Explanation:

That's what T4L/Edge said

8 0

2 years ago