Answer:
50
Step-by-step explanation:
let x represent the total number of students.
8 / x = 16/ 100
16x = 800
x = 50
50 total students
The results of an analysis, on the makeup of garbage, done by the Environmental Protection Agency was published in 1990. Some of the results are given in the following table, which for various years gives the number of pounds per person per day of various types of waste materials.
Waste materials
1960
1970
1980
1988
Glass
0.20
0.34
0.36
0.28
Plastics
0.01
0.08
0.19
0.32
Metals
0.32
0.38
0.35
0.34
Paper
0.91
1.19
1.32
1.60
For glass, calculate the average rate of change between 1970 and 1980. Then interpret what this value means.
a.
From 1970 to 1980, the number of pounds of glass per person per day decreased by 0.002 per year.
c.
From 1970 to 1980, the number of pounds of glass per person per day increased by 0.002 per year.
b.
From 1970 to 1980, the number of pounds of glass per person per day decreased by 0.11 per year.
d.
From 1970 to 1980, the number of pounds of glass per person per day increased by 0.11 per year.
The correct option regarding the average rate of change for glass is given by:
c. From 1970 to 1980, the number of pounds of glass per person per day increased by 0.002 per year.
What is the average rate of change of a function?It is given by the change in the output divided by the change in the input.
Looking at the table, in the 10 years from 1970 to 1980, the amount of glass changed from 0.34 pounds to 0.36 pounds, hence the rate is given by:
r = (0.36 - 0.34)/10 = 0.02/10 = 0.002.
Which means that option c is correct.
More can be learned about the average rate of change of a function at https://brainly.com/question/24313700
#SPJ1
Answer:Option C
Step-by-step explanation: Just simplifying the other guys answer
WILL GIVE BRAINLIEST, PLEASE ANSWER QUICKLY. (look at picture)
Answer: 1/14, 2/28.
Step-by-step explanation:
2/7 x 0.25 =
Convert 0.25 into a fraction.
0.25 = 1/4.
Multiply the numerators together and then multiply the denominators with each other.
1/4 x 2/7 = 2/28.
Therefore, the answer is 2/28, but it can also be simplified to 1/14. So the answer is the first one, or 1/14.
Answer:
1/14 or A
Step-by-step explanation:
0.25 as a fraction is 1/4
1/4 x 2/7 = 2/28, simplify to become 1/14, and there is your answer
(could i have brainliest if possible?)
(⌐■_■) ( •_•)>⌐■-■
ᕙ(^▿^-ᕙ)
Answer:
(‿!‿) ԅ(≖‿≖ԅ)
Step-by-step explanation:
Amy spent 80 minutes on DFM last week.
This week, Amy spent 112 minutes on DFM.
Find the percentage increase.
Answer:
80:100
112:x
11200/80=x
x= 140
40% increase
Answer:
29%
Step-by-step explanation:
112-80=32
increase ÷ original × 100 %
= 32÷112×100%
≈29% (corrected to the nearest whole number)
HELP ME PLZ !!! IT'S ALGEBRA
Answer:
x = - 8/23
y = 40/23
Step-by-step explanation:
-5x- y = 0
and
-8x+3y = 8
The first step to solve this would be to get what one of the two variables equal. The easiest in this case is y from the first equation.
-5x-y = 0
-y = 5x
y = - 5x
Now you can take this y value and plug it into the section equation.
-8x + 3(-5x) = 8
-8x - 15x = 8
-23x = 8
x = - (8/23)
Once you get the x value you can plug it back into equation one to get y's value
-5*-(8/23) - y = 0
40/23 - y = 0
y = 40/23
A sphere has a radius of 4 feet. What is the volume of the sphere? Express your answer in terms of pi.
The volume of the sphere is ___ pi.
Question 2
A spherical balloon has a diameter of 4 feet. Approximate how many cubic feet of air this balloon holds?
Use 3.14 as an approximate for pi and give a numerical answer.
The balloon can hold ____ cubic feet of air.
an ice skating rink rents out skates for 5.50 per hour you have 22.00 to spend how many hours can you rent a pair of skates?
Help- please and show work!
Answer:
49
Step-by-step explanation:
plug in the value of m.
[tex]8^{2}[/tex]-15 = 64 - 15 = 49
multiple choice plz help me :)
Can someone please help me. WILL MARK U BRAINLIEST!!!!
Answer:
enwvhbdfbhwfwc m
Step-by-step explanation:
wbdwuhecjb sorry i woulda helped but i wasant taught this yet im really sorryy i need answers for a test too so im really stuck
Answer:
Step-by-step explanation:
Find the coordinates of the intersection of the diagonals of parallelogram GHJK with vertices G (1,3) H (4,3) J (5,1) and K (2,1)
Answer: (3,2)
Step-by-step explanation: Diagonal is a line connecting two opposite points of a form. In parallelograms, there two diagonals and they bisect each other, i.e., the point where the diagonals meet divide them into two segments with the same measure. In short, diagonals meet at their midpoint.
The way to determine midpoint is given by
(x,y) = [tex]{\frac{x_{1}+x_{2}}{2} },\frac{y_{1}+y_{2}}{2}[/tex]
(x,y) = [tex]{\frac{1+5}{2} },\frac{3+1}{2}[/tex]
(x,y) = (3,2)
The coordinates where diagonals of parallelogram GHJK intersect are (3,2).
A medical school admits 86 new applicants every year, let y represent the number of years and a represent the total of admitted applicants
Answer:
a = 86y
Step-by-step explanation:
Given:
Number of applicants per year = 86
Find:
Equation represent total applicants
Computation:
Assume;
Total number of years = y
Total number of applicants = a
So,
Total number of applicants = Number of applicants per year x Total number of years
a = 86 x y
a = 86y
WILL MARK YOU BRAINLIEST
Answer:
the other information to prove XYWZ is a parallelogram is
XY // WZ
Step-by-step explanation:
The other information needed to prove XYWZ is a parallelogram is
XW=YZ
because every parallelogram have four equal sides
Match each problem to the inequality that models it. Once choice will be used twice *
Answer:
yes
Step-by-step explanation:
1 sentences- c
2 sentence - b
3 sentence- d
4 sentence- a
5 sentence- c
subtract 3x^2 + 8x from -9x^2 + 3x -8
A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.
8x+9y= -82
-x-9y=89
Answer:
Step-by-step explanation:
Hey could U help me with this question
calculate 0.1 x 60?
quickly help please
Answer:
6
Step-by-step explanation:
Choose 3 answers pls help
Answer:
B, C, and D
Step-by-step explanation:
They all have inequality signs, < or >, and the others are expressions
help me please I don't get it
I need help on my warm up!! pls thx!
Step-by-step explanation:
[tex] \tt{30.16 = 17.56 + 5x} [/tex]
Swap the sides of the equation :
⤑ [tex] \tt{17.56 + 5x = 30.16}[/tex]
We want to remove the 17.56 first.
Since the original equation is 17.56 , we are going to use the opposite operation and subtract 17.56 from both sides :
⤑ [tex] \tt{5x + 17.56 - 17.56 = 30.16 - 17.56}[/tex]
Simplify. 17.56 - 17.56 = 0 on the left. 30.16 - 17.36 = 12.6 on the right.
⤑ [tex] \tt{5x = 12.6}[/tex]
Then, we need to think about how to remove the coefficient 5. Since the opposite of multiplication is division , I am going to divide both sides by 5.
⤑ [tex] \tt{ \frac{5x}{5} = \frac{12.6}{5}} [/tex]
Simplify. 5/5 = 1 on the left and 12.6/5 = 2.52 on the right. So, Our answer is x = 2.52.
[tex] \pink{ \boxed{ \boxed { \tt{Our \: final \: answer : \underline{ \underline{ \bold{ \tt{x = 2.52}}}}}}}}[/tex]
Hope I helped ! ♡
Have a wonderful day / night ! ツ
▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
Helen buys a fleet of taxis for her new business.
The bank lends her £300 000 and she uses this money
to buy the taxis which cost £23 400 each.
a) How many taxis can she buy?
b) How much of the loan will be left over?
Answer:
a=12 b= 19200
Step-by-step explanation:
what is 3 3/5 + 6 3/10
Answer:
18/5 or 3 3/5
Step-by-step explanation:
the grocery store sells 4 pints of strawberries for 13.80 how much does it cost per pint
Answer:
3.45
Step-by-step explanation:
if 4 pints are 13.80 you would have to divided 13.80 by 4 and 4 by 4 to get 1 over blank. The denominator would be 3.45 which would be the amount 1 pint cost. If you don't want to do it as fractions you can simply divide 13.80 by 4.
11. Twenty percent of what number is 48?
Answer:
240
Step-by-step explanation:
Is a bucket used to carry water more likely to have a capacity of a pint or a gallon
Answer:
well it depends on the size of the bucket but some buckets may be a gallon but then some are bigger id-k if this makes sense im srry
Step-by-step explanation:
help me plz
i need help
free brainless
Answer:
A
Step-by-step explanation:
Answer:
C. 35 sq. units
Step-by-step explanation:
in order to find the area of a triangle you have to use the formula
1/2 b h
b as in base
h as in height
so if we use the measurements on the triangle and we plug that in we will get
1/2 x 14 (the base) x 5 (the height)
therefore giving us 35 sq. units.
hope this helps!
Please help me there can only be one answer
Which sequence of transformations could be used to map triangle MNO onto M”N”O”?
O T(-2,4) ° ry-axis
O ry-axis •T(-2, 4)
O T(2,-4) • R0,180 degrees
O R0.180 degrees T(2,-4)
Answer:
Option D
Step-by-step explanation:
I dont really know but i think its D
Answer:
a
Step-by-step explanation:
PLEASE HELP!! MY LIFE IS ON THE LINE MY MOM WILL HURT ME...
1. Combine Like Terms
2x - 3 + 5x +10 + 7 (x + 8)
Group of answer choices
A. 14x - 69
B. 7x + 10 +8
C. 7x + 13 +8x
D. 7x +28
2. Combine Like Terms
2 ( 4x+ 5) +2x
Group of answer choices
A. 10x +10
B. 8x +5 +2x
C. 10+ 8x -2x
D. 18 + 10x
Answer:
1. A
2. A
you just have to distribute and add the x's and other numbers together
Answer:
Step-by-step explanation:
1.A
2.A
20 is 20% of what number?
Answer:
100
Step-by-step explanation:
"Percent" or "%" means "out of 100" or "per 100".
Therefore 20% can be written as 20 /100
Therefore, 20 is 20% of 100