1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SCORPION-xisa [38]
3 years ago
12

PLEASE HELP ME I'LL MAKE YOU BRAINLIEST!!!! In 1972, federal vehicle emission standards 3.4 grams hydrocarbons released per mile

driven. By 2007, the standards allowed only 0.8 grams hydrocarbons per mile driven. What was the rate of change from 1972 to 2007? Please show work thank you
Mathematics
1 answer:
AURORKA [14]3 years ago
5 0
<h3>Answer: Approximately -0.0742857 grams per year</h3>

======================================================

Work Shown:

x = year

y = amount of hydrocarbon emissions in grams, per mile driven

m = rate of change = slope

m = (y2 - y1)/(x2 - x1)

m = (0.8 - 3.4)/(2007 - 1972)

m = -2.6/35

m = -0.0742857 approximately

The approximate rate of change is about -0.0742857 grams per year. The negative rate of change indicates the per mile hydrocarbon amount has gone down by about 0.0742857 grams each year.

You might be interested in
Danika signs up to work for 3 1/2 hours at the science fair. If each work shift is 3/4 hour, how many shifts will Danika work?
forsale [732]

namely, how many times does 3/4 go into 3½?  Let's firstly convert the mixed fraction to improper fraction.

\bf \stackrel{mixed}{3\frac{1}{2}}\implies \cfrac{3\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{7}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{7}{2}\div \cfrac{3}{4}\implies \cfrac{7}{~~\begin{matrix} 2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}\cdot \cfrac{\stackrel{2}{~~\begin{matrix} 4 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}}{3}\implies \cfrac{14}{3}\implies 4\frac{2}{3}

5 0
3 years ago
Read 2 more answers
Determine which side is the smallest in the diagram
AnnyKZ [126]

the shortest side is always opposite the smallest angle.

In triangle ABC the shortest side is AC

In triangle ADC  the shortest side is DC

DC<AC since they are in the same triangle.

5 0
3 years ago
Help plss helppppppppppppppppppppppppppppppppppppppppp
mr_godi [17]

Answer:

okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk

Step-by-step explanation:

answer mujha nahi pata aaaaaaaaaàaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

3 0
3 years ago
Use dimes, nickels, and pennies to show 42 cents. How many different ways can you show this amount?
Juli2301 [7.4K]

Answer:

U can use. Four dimes an two pennies

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Pls help me out it's due today. I will give brainliest​​ pls​
kenny6666 [7]

Answer: I’m wasnt sure if u r supposed to round up. I assumed that we round down at the hundredth decimal cuz money. Also, make sure to include money signs when you write the numbers down.

A. 42.57

b. 50.96

C. 49.44

D. 63631.44

E. 127.05

F. 3805.49

G. 3.76

H. 2687.61

I. 9526.21

J. 3453.78

Step-by-step explanation:

A. 30 x 1.419= 42.57

B. 45 x 1.13250= 50.9625

C. 56/ 1.13250= 49.44812362

D. 478.90 x 132.87= 63631.443

E. 89.54 x 1.419= 127.05726

F. 5400/ 1.417= 3805.49682875

g. 500/ 132.87= 3.76307669

H. 4500/ 1.67435= 2687.61011735

i. 5689.50 x 1.67435= 9526.214325

J. 458904/ 132.87= 3453.78189207

7 0
2 years ago
Other questions:
  • If two or more polygons are congruent, which statement must be true about the polygons? Read all of the choices before deciding.
    10·2 answers
  • WILL MARK BRANLIEST!! 15 POINTS!!
    11·1 answer
  • Helping hearts is making care packages. 36 bars of soap and 27 tubes of toothpaste our available each package will contain an eq
    7·2 answers
  • What is the slope if the line that passes through the pair of points (-5.5, 6.1) (-2.5, 3.1)
    9·1 answer
  • 3.8 is what in percent 1.9375 is what in percent ​
    12·1 answer
  • Write the phrase as an algebraic expression: 2 more than the product of 7 and a number y
    12·1 answer
  • Ganesh is making a scale model of the Space Needle in Seattle, Washington. The Space Needle is 605 feet tall. If the model is th
    14·2 answers
  • The equation of a proportional relationship is of the form y=kx, where k is a positive number, and the graph is a line through (
    5·1 answer
  • Please help!!<br><br> Find the slope of the line
    5·1 answer
  • The __________ states that as a procedure is repeated again and again and again and again, the probability tends to approach the
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!