please help lol its about size of divisor
The function y = f (x) is graphed below. What is the average rate of change of the function f(x) on the interval - 1 ≤ x ≤ 3?
Answer:
[tex]\displaystyle -2[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Average Rate of Change: [tex]\displaystyle \frac{f(b) - f(a)}{b - a}[/tex]Step-by-step explanation:
Step 1: Define
Interval -1 ≤ x ≤ 3
a = -1, b = 3
f(a) = f(-1) = 4
f(b) = f(3) = -4
Step 2: Find Average
Substitute in variables [ARC]: [tex]\displaystyle \frac{f(3) - f(-1)}{3 + 1}[/tex]Substitute: [tex]\displaystyle \frac{-4 - 4}{3 + 1}[/tex][Fraction] Subtract/Add: [tex]\displaystyle \frac{-8}{4}[/tex][Fraction] Divide: [tex]\displaystyle -2[/tex]Students in a science class investigated how the speed of sound changes with the air temperature outside. The data are shown in the scatterplot.
Based on the scatterplot, what is the best prediction of the speed of sound when the air temperature is 45°C?
350 m/s
355 m/s
360 m/s
365 m/s
Answer:360 m/s
Step-by-step explanation:
The best prediction of the speed of sound when the air temperature is 45°C is 360 m/s option third is correct also the graph shows a positive correlation.
What is correlation?It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.
As we can see in the graph:
When the air temperature is 10°C the speed of sound is around 337m/s
When the air temperature is 20°C the speed of sound is around 344m/s
When the air temperature is 30°C the speed of sound is around 348m/s
When the air temperature is 40°C the speed of sound is around 355m/s
From the above observation, the air temperature increases the speed of the sound increases.
So when the air temperature reaches 45°C the speed of the sound will be 360 m/s.
Thus, the best prediction of the speed of sound when the air temperature is 45°C is 360 m/s.
Learn more about the correlation here:
brainly.com/question/11705632
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look at the diagram and answer the question. i’ll give brainliest.
Answer:
Yes
Step-by-step explanation:
With each hour you rent the paddleboard the price goes up.
Time= independent variable
Cost= Dependent variable
Diego’s history teacher writes a test for the class with 26 questions. The test is worth 123 points and has two types of questions: multiple choice worth 3 points each, and essays worth 8 points each.
How many essay questions are on the test? Explain your reasoning.
Answer: 9 essay questions
Step-by-step explanation:
The test has 26 questions
The test is worth 123 points
The test has two types of questions:
Multiple choice worth 3 points each
Essays worth 8 points each
Let the number of multiple choice questions be, m, and the number of essay questions be , e.
This forms a simultaneous equation below:
m + e = 26 ... (i)
3m + 8e = 123 ... (ii)
Multiplying (i) by 3 and (ii) by 1 we get:
3m + 3e = 78 ... (i)
3m + 8e = 123 ... (ii)
Subtracting (ii) - (i) we get;
0m + 5e = 45
5e = 45
e = 45 ÷ 5 = 9
So there are 9 essay questions.
and;
m + 9 = 26
m = 26 - 9 = 17
There are also 17 multiple choice questions.
Which is an equivalent expression of:
6(3x + 5) - 11
A.18x - 5
B.18x + 10
C.18x - 11
D.18x + 19
Rosemary is driving to Chicago, and she is 84 miles away. She wants to arrive in 1.5 hours. What rate of speed will she have to maintain to arrive in that time?
Group of answer choices
Rosemary needs to maintain 126 mph.
Rosemary needs to maintain 65 mph.
Rosemary needs to maintain 56 mph.
Answer:
56 mph
Step-by-step explanation:
Process of elimination. 126 mph is much too high because it's more than the distance and they will arrive too early. 65 + 65 ÷ 2 = 97.5, that's more than 84 miles. The reason we divide by 2 is because of the .5. Now all we have is 56 mph. To check, 56 + 56 ÷ 2 = 84
Answer:
56
Step-by-step explanation:
84 / 1.5 = 56
What is the variable equal to?
6x = 24
Group of answer choices
x = 5
x = 3
x = 144
x = 4
Answer: x=4
Step-by-step explanation: Divide by 6 on both sides to get x=4
6x/6=24/6
x=4
x = 4
Divide both sides by 6
6x/6 = x
24/6 = 4
x=4
Find the area of the figure. (Sides meet at right angles.)
1/4 of 12 i need help
Answer:
3
Step-by-step explanation:
12*1/4
=12/4
=3
Answer:
the answer is 3 i think, if not, its going to be embarrassing
Help Please I will give Brainliest and 14 Points!!
Answer: Switch the numbers in both points and change the negative numbers in all three points to positive
Step-by-step explanation:
Simplify the expression
-5.5(2 - 6x) - 2.5x
(repost) Help Please I will Give brainliest If Correct!!
Answer:
There are about 7 x 10^6
Step-by-step explanation:
3.5*2029249= 7102347
rounds to 7000000= 7 x 10^6
Answer:
7.102347 times [tex]10^{6}[/tex].
Step-by-step explanation:
Alright. This is an inanely large amount of words, as a drill for scientific notation. The first step is, since the mystery book has 2,029,242 words, to turn this into a single digit multiplied by a power of ten - 2.029242 times [tex]10^{6}[/tex] (apologies for the weird font change in the middle). The science fiction book is 3.5 times larger - multiply 2.029242 on a calculator (unless you really like suffering for some reason; then do it by hand) - it comes out as 7.102347. Thus, the answer is 7.102347 times [tex]10^{6}[/tex].
In Jason's baseball card
collection 62% of his cards are
from the National League. If
Jason has 50 cards, how many
players are from the National
League?
Answer:
28.
Step-by-step explanation:
28 is the correct answer using the mathematical format given by the percentage supplying us with the variable then by 50 the answer would be 28.
What is the perimeter of quadrilateral A'B'C'D'?
Quadrilateral ABCD is translated 2 units to the left and 5 units down to create quadrilateral A'B'C'D'.
help me please 20 + points
Answer:
(9,4.5)
Step-by-step explanation:
please asap homework help
Answer:
2700 cubic meters
Step-by-step explanation:
18*9*10=1620m
24*9*5=1080m
1620+1080=2700[tex]m^{2}[/tex]
Enter the value of p so the expression 5/6 - 1/3n is equivalent to p(5-2n)
Answer:
I guess it's 1/6
Step-by-step explanation:
make it braintliest please
What is -17/5 as a decimal?
-3.4 that is the correct answer to the question
-ANSWER CORRECTLY
-DO NOT ANSWER IF YOU DO NOT KNOW
-DO NOT COPY AND PASTE YOUR ANSWER
-DO NOT COPY OTHER PEOPLE
Answer:
the third one, (4,5)
Step-by-step explanation:
4+1 >4
5+1>4
Answer:
it is 4,5
Step-by-step explanation:
when you substitute 4 for n you get this:
n + 1 > 4
4 + 1 = 5
5 > 4
When you substitute 5 for n you get this:
n + 1 > 4
5 + 1 = 6
6 > 4
HOPE THIS HELPS! LEAVE A THANKS AND 5 STAR RATING PLZ
PLEASE PLEASE PLEASE PLEASE HURRY I ONLY HAVE 59 MINUTES LEFT REEEEEE
Use the interactive number line to graph the inequality x > –2.5.
Answer:
The second and fourth one
Step-by-step explanation:
The open circle means more/less than or equal to and the closed circle is only more than or less than and it is greater so it goes right
I Will award Brainliest
Answer:
Second choice
Step-by-step explanation:
Tiyah has 3 coins in her pocket. She pulls
them from her pocket and they all fall on
the floor. What is the probability that all
three coins landed tails up?
Number of events:
Expression:
Answer:
Answer:
12.5%
Step-by-step explanation:
1 coin landing tails up is 50%
2 coins is 50% of 50% so 25%
3 coins is 50% of 50% of 50% so 12.5%
-9+4(f-1)=-13+4f. Find f
Answer:all real numbers are solutions
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
Step 2: Subtract 4f from both sides.
Step 3: Add 13 to both sides.
0=0
Answer:
all could be
f(0)=.12
f(.1)=-.4
f(.2)=1.3
f(.3)=2.6
f(.4)=3.7
Step-by-step explanation:
2
Patty is playing a card game. There are
three blue cards in a deck of twelve cards.
Patty draws a card at random. Without
replacing it, she draws another card. What
is the probability that neither card is blue?
Answer:
1/4
Step-by-step explanation:
The value of a share of stock decreases in value at a rate of $1.40 per hour during the first 3.5 hours of trading. Enter and solve an equation to find the decrease in the value of the share of stock during that time. Let x represent the decrease in value of the share of stock during 3.5 hours.
The equation to find the decrease in the value of the share of stock is x / _____ = _______
The decrease in value of the share of stock during 3.5 hours was $________
Answer:
x/3.5h = -$1.4
So, x = -$1.4 * 3.5h
= -$4.9
Step-by-step explanation:
Since your losing $1.4 every hour, the 1.4 is supposed to negative.
Also, since your losing that amount of money for 3.5 hours, we are trying to find the total of how much money is lost in the 3.5 hours. To do this, we have to do x/3.5h = -$1.4. But since you can't do x/3.5, we have to do inverse operation. When you divide 3.5 hours to the other side of the equation it becomes multiplication. So you do -$1.4 times 3.5 hours
and get -$4.9.
What is f(-2) if f(x) =1/2x?
alan is converting large and small numbers from standard notation to scientific notation. group the numbers according to their powers of 10
Answer:
i am kind of confused by the question but i would say to but all the numbers below 1 in the 10^-4 section and the numbers above 1 in the 10^6.
i might be wrong i don't what the question is really.
Step-by-step explanation:
Alan is converting large and small numbers from standard notation to scientific notation
10⁶ = 4.03 x 10⁶, 2.93 x 10⁶, 5 x 10⁶
10⁻⁴ = 1.2x 10⁻⁴, 6 x 10⁻⁴, 5.9 x 10⁻⁴
What is the scientific notation of a number?The standard form for a number is a method by which we write number in a format like b×10ˣ. The value of b should be in between 0 to 10.
Given that,
The numbers,
0.00012, 4030000, 2930000, 0.0006, 5000000, 0.00059
Taking number, 0.00012
To convert it into scientific notation,
It should be in from of b×10ˣ,
So, now dividing and multiplying 10000 into the number 0.00012,
⇒ 0.00012 x (10000/10000)
⇒ (0.00012 x 10000)/10000
⇒ 1.2/10000
⇒ 1.2x 10⁻⁴
Similarly,
0.0006 can be written as 6 x 10⁻⁴
And 0.00059 can be written as 5.9 x 10⁻⁴
Now taking number, 4030000
To convert it into scientific notation,
It should be in from of b×10ˣ,
So, now dividing and multiplying 1000000 into the number 4030000,
⇒ 4030000 x (1000000/1000000)
⇒ (4030000 / 1000000) x 1000000
⇒ 4.03 x 1000000
⇒ 4.03 x 10⁶
Similarly,
2930000 can be written as 2.93 x 10⁶
And 5000000 can be written as 5 x 10⁶
To know more about scientific notation check:
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PLZ PLZ PLZ ANSWER CORRECTLY IN A HERRY!!!!!
1.
(05.02)
The area of the parallelogram below is_______square meters.
A parallelogram with height labeled with 8 meters. The top horizontal side is labeled 6 meters. The base of the left triangle formed by the height is 2 meters.
(4 points)
please solve and explain, thanks!! :))
Answer:
B
Step-by-step explanation:
Its B because you distribute each term inside the parenthesis by the number out side
4×2x= 8x
4×3= 12
Get rid of the parenthesis after distributing
which makes 8x+12
Answer:
B. 8x + 12
Step-by-step explanation:
First you'd start with the parentheses because of PEDMAS. But because you can't do anything in there, you go to multiplying 4 by each item inside the parentheses. 4x2x gives 8x. 4x3 gives 12. Leaving you with 8x+12. Hope that helps! :)
