Answer:
f(x)'=3x^2-4x
Step-by-step explanation:
dy/ dx or f(x)'=3x^2-4x
Please make answer as brainliest
put the following equation on a line into slope intercept form simplified all fraction 12 x + 3 Y equals -18
Find the radius of this circle
Answer:
the radius is 3
Step-by-step explanation:
3 to the second power is the only number that would equal 9 and the circle tells us that the ending value of r is 9
hope this helps <3
suppose that grade point averages of undergraduate students at one university bell-shaped distribution with a mean of 2.57 and a standard deviation of 0.4 describe where approximately 99.7% of a grade point averages lie
Answer:
2.57-0.4-0.4-0.4=1.37
2.57-0.4-0.4=1.77
so the answer is 1.37 between 3.77
Step-by-step explanation:
Someone answer and explain ILL MARK BRAINLIEST!!!
Answer:
x=1, y=-2
Step-by-step explanation:
2x-3y=8 (1)
4x+3y=-2 (2)
From (1):
2x=8+3y
x=4+1.5y (3)
Subst (3) into (2)
4(4+1.5y)+3y=-2
16+6y+3y=-2
16+9y=-2
9y=-2-16
9y=-18
y=-2
subst y=2 in to (3)
x=4+(1.5*-2)
x=4-3
x=1
Ans: x=1, y=-2
The area: is about? UHH anyone know this??!!
Answer:
1.77
Step-by-step explanation:
Its looking for the area of the circle which is [tex]\pi r^2[/tex]
the diameter is 1.5 feet so the radius is 0.75ft
[tex]0.75^{2} \pi[/tex]
0.5625[tex]\pi[/tex]=1.766 which rounded is 1.77
help me pleaseeeeeeeeeee
1. Dyani says she identified a quantitative variable and conducted a survey when she asked her fellow classmates in her homeroom about their favorite style of sweatshirt from the categories: hoodie, pullover, or zip-up. Explain her error.
2. Suppose Hana wants to find out the most commonly driven type of the vehicle among the students at her high schoo;. Since 1,560 students attend her high school, she asks every tenth student who enters the building one morning what kind of vehicle he or she drives. What is the population in this scenario?
Problem 1
The variable "favorite style of sweatshirt" is a qualitative variable instead of a quantitative one. This is because the categories "hoodie", "pullover" and "zip-up" are not quantitative in nature. They are simply labels or names. Yes we can assign a frequency tally for each one, which is likely what she's doing, but that's a slightly different story from what your teacher is asking.
An example of a quantitative variable is "height". This variable can take on any positive numeric value, within realistic reason of course. Theoretically there are infinitely many possible height values if we allow as much precision as we want. Even in a more finitely restricted space, we still have a lot of values to work with. We don't consider each number a different label or category or class. It's just a number. So that's what makes "height" a quantitative variable.
Keep in mind that just because you have a number, doesn't mean it's automatically quantitative. A phone number or a basketball player jersey number are two examples of numbers that are labels. We cannot add up a bunch of phone numbers to get something meaningful. Ask yourself "can I do math operations on these numbers?". If the answer is "yes", then you have quantitative data. Be careful to ask this question for any kind of data you have. Going back to Dyani's data, the category names cannot have math operations applied to them, so that's more evidence we're not dealing with quantitative data.
In short, Dyani has qualitative data instead of quantitative data. Specifically, she has nominal data because each label can be thought of as a name. There is no order to each choice, which means the data is not ordinal.
============================================================
Problem 2
The answer to this question is found at the top, in the very first sentence. She wants to know what the most common car is. The population is the set of all student drivers at that school. Let's say there are 400 students who drive to school. That would mean the population would be those 400 people.
Because it's likely too time consuming to survey every member of the population, a sample is used instead to make the best estimate of what the population is. So this is what she's doing when she asks every 10th student to take part of the survey. This is known as systematic sampling because there's a pattern or rule to her choices. This form of sampling can be fairly unbiased assuming that she does this on various different days to get a good snapshot. If she only did it on one day, then it could be likely that some students skipped school or some were out sick. The more she samples, the better look she'll have at the population.
Solve for x
-1/5 = -5
A. 1
B. -1
C. 25
D. -25
Answer:
t=25
Step-by-step explanation:
multiply both sides by -5
where you get t=-5(-5)
where you get t=25
Step-by-step explanation:
multiply both sides by 5
Three times the difference of a number and 7 is 30. Find the number.
Answer:
x = 17Step-by-step explanation:
3(x - 7) = 30 is our equation, since we take 7 away from the number and then multiply the result by 3.
3x - 21 = 30
Add 21
3x = 51
Divide by 3
x = 17
To check.
3(17 - 7(
3(10)
30 = 30 Correct
5. A circle has a circumference of 24π cm. What is its area?
Step-by-step explanation:
A
≈
45.84
Using the formulas
A
=
π
r
2
C
=
2
π
r
Solving for
A
A
=
C
2
4
π
=
24
2
4
·
π
≈
45.83662
Could someone answer 1 and 2 for me?
Answer:
what are you supposed to put on the first 2 lines
Step-by-step explanation:
or do you just put the solution?
4 : 7 and 12 :
what the answer
Answer:
12: 21
Step-by-step explanation:
Help fast plz 100 points!
Answer: A
Step by step: The explain is in my photo.
Answer:
A
Step-by-step explanation:
Someone please help me it’s so hard
Answer:
m=2
b=1
Equation is y=2x+1
An investor started building his portfolio in 1985. The initial value of this portfolio was $25,000. After a 30- year career, the value of his portfolio had increased to $425,000. What is the average percentage increase per year in his portfolio?
Is the slope for the line below positive or negative
Answer:
negative
Step-by-step explanation:
positive -> as x increases, y increases
negative -> as x increases, y decreases
Marc decides put molding around his bathroom floor. The room is 6’ x 8’. How much molding will he need? Answer: _ feet (type the number only)
Plz help...... ASAP...... PLZ??
Answer:
The option on the top right.
Step-by-step explanation:
Because this is to be done asap, I will not take time to explain.
Answer:
Answer is the option in the top right
Step-by-step explanation:
The choice in the top right has a 4 x 4 base and the triangle has a height of 6 corresponding to the figure in the top.
Find the slope of a line that passes through the following points
(-4,3) , (-3,-1)
A. 4/1
B. 1/4
C. -1/4
D. -4,1
Answer:
-4/1
Step-by-step explanation:
slope = rise/run= -4/1= -4
if my answer helps please mark as brainliest.
will mark brainlist please please I got this wrong at school very urgent.;{
Answer:
2 my guy, not sure how to really explain in detail
Find the roots/zeroes of the following polynomial
x^2−19=6
Answer:
x=5 and x=-5
Step-by-step explanation:
1. first you would subtract 6 from both sides to set the equation = to zero.
2. The equation would then be x^2-25=0.
3. that is a difference of two squares polynomial. So when you factor it, it is (x+5)(x-5)=0
4. by the zero product property, the roots are 5 and -5.
graph the equation 8+2x=4x
Answer:
2x - 4x = -8
-2x = -8
-2x/-2 = -8/-2
X = 4
if (x/3+1,y-2/3)is equal to (5/3,1/2) find the value of x and y
Answer:
The value of x is 2.
The value of y is [tex]\frac{7}{6}[/tex]
Step-by-step explanation:
x:
We have that:
[tex]\frac{x}{3} + 1 = \frac{5}{3}[/tex]
Multiplying everything by 3
[tex]x + 3 = 5[/tex]
[tex]x = 2[/tex]
The value of x is 2.
y:
We have that:
[tex]y - \frac{2}{3} = \frac{1}{2}[/tex]
Least common multiple between 3 and 2 is 6, which means that we multiply everything by 6.
[tex]6y - 4 = 3[/tex]
[tex]6y = 7[/tex]
[tex]y = \frac{7}{6}[/tex]
The value of y is [tex]\frac{7}{6}[/tex]
solve by graphing
-2x-y<-2
y≥1/3x-4
Answer:
(2.571,-3,143)
Step-by-step explanation:
Which range contains the value of √25-4+16?
Answer:
A) Between 6.0 and 6.2
Step-by-step explanation:
[tex]\sqrt{25-4+16} \\\sqrt{41-4}\\\sqrt{37}[/tex]
6.08
What is the revenue of the company when it
spends $15 million on advertising? Show work
Answer:
$32 million
Step-by-step explanation:
I'm assuming the data set is in millions of dollars. Using some quick logic, the formula is revenue = (advertising)(2) + 2
R = 15(2) + 2R = 30 + 2R = 32 ($32 million?)Which fraction is not greater than 2/5
Answer:
1/5
Step-by-step explanation:
Because it is 0.2 and 2/5 equal 0.4
Find EF in the trapezoid.
A
6
D
E
F.
2x+7
В
5x+6
C
EF =
Answer:
EF = 12
Step-by-step explanation:
EF = 2(AD)
EF = 2(6) = 12
12 more than p is equal to 67
How many inches are in 1/2
feet?
Answer:
1/2 feet = 6 inches
Step-by-step explanation:
my answer needs to be at least 20 words so don't mind this <3
Answer:
Hello!!! erz here ^^
Step-by-step explanation:
A foot is 12 inches,
Since we are finding out what half of a foot is, we should divide 12 by 2.
Ur answer is... 6 inches :D
Hope this helps!! :D