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goldenfox [79]
4 years ago
8

today's gasoline price are 3.44 dollars per gallon.One year ago, gasoline prices were 3.75 dollars per gallon.Determine the perc

ent of change in the gasoline price from a year ago to today. Show your calculated this change and interpret its meaning in the context of this problem
Mathematics
1 answer:
olganol [36]4 years ago
3 0
((3.44−3.75)÷3.75)×100=−8.27%
gasoline prices decreased by 8.27%
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What is the equation of the line that passes through (-5, 7) and is parallel to the line y = 4x + 5?
Marysya12 [62]

Answer:

y=4x+27

Step-by-step explanation:

If a line is parallel, it would have the same slope, so you already have that.

Now, you need the y-intercept of the second line. You already have one point, so use that point and the slope to find the y-int. What you can do (since you know you have to go up 4 and over 1, add a 1 to the -5 until you get to zero. your y-int would be 7+20 since you've gone up 5x4)

your final answer (i think) should be y=4x+27, but I could be wrong :))

6 0
4 years ago
F(x)=x^2 +10 Over which interval does f have a positive average rate of change?
EastWind [94]

Answer:

No x-intercept/Zero

Step-by-step explanation:

Substitute f (x)=0

Solve the equation

There is no x-intercept/zero

5 0
3 years ago
Read 2 more answers
Solve -3y + 14 + y = 12
ser-zykov [4K]

Answer:

y = 1

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

-3y + 14 + y = 12

<u>Step 2: Solve for </u><em><u>y</u></em>

  1. Combine like terms [Addition]:                                                                        -2y + 14 = 12
  2. [Subtraction Property of Equality] Subtract 14 on both sides:                       -2y = -2
  3. [Division Property of Equality] Divide -2 on both sides:                                y = 1
6 0
3 years ago
Read 2 more answers
What is the length of BC? Round to the nearest tenth.
Kay [80]

Answer:

BC ≈ 14.5 cm

Step-by-step explanation:

Using the sine ratio in the right triangle

sin65° = \frac{opposite}{hypotenuse} = \frac{BC}{AB} = \frac{BC}{16} ( multiply both sides by 16 )

16 × sin65° = BC , then

BC ≈ 14.5 cm ( to the nearest tenth )

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3 years ago
Tell whether the system has one solution infinitely many solutions or no solution <br> x=-7y+34
marin [14]
Add -7y and divide both sides to get one solution (0.20588)
5 0
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