Answer:
The area of the circle is around 50.24
Step-by-step explanation:
The formula for the area of a circle is [tex]\pi r^{2}[/tex]
To find r, we can use the point that is given to us. To find the distance of the radius, we can use the formula
[tex]d=\sqrt{(x2-x1)^{2}+(y2-y1)^{2} }[/tex]
We can just plug in the points given into the formula and we get,
4.
Now we can plug 4 into the formula
[tex]\pi r^{2}[/tex]
[tex](3.14)(4^{2})[/tex]
Resulting in,
around 50.24.
Help fast plz 100 points!
Answer: A
Step by step: The explain is in my photo.
Answer:
A
Step-by-step explanation:
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:
help me pleaseeeeeeeeeee
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
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?
the simple interest formula is I=Prt. what is the t stands for?
Answer:
t = time, usually in years
Step-by-step explanation:
t = time, usually in years
Answer:
T is the time
What is the equation of the line that passes through the point (-8, 3) and has a
slope of -1?
Answer:
y=-x-5
Step-by-step explanation:
y-3=-1(x-(-8))
y-3=-1(x+8)
y-3=-1x-8
y=-1x-8+3
y=-1x-5
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?
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]
Can someone please help?
Answer:
3) 35.98
4) 63.98
Step-by-step explanation:
3) [(7+7)×3.14÷2]+14=35.98
4) (7+7)×3.14+14×3=63.98
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
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
Solve for x.
x^2+2=102
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.
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
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?)In a lottery game, a machine has 48 balls marked with numbers from 1-48 and six of them are taken out at random. A player picks six of these numbers, trying to match the six balls that come out of the machine in any order. If exactly 4 of those 6 numbers match those drawn, the player wins third prize. What is the probability of winning this prize? Give answer as a fraction or decimal rounded to 4 significant digits in either standard or scientific notation. Hint: there is more than one way to win, take into consideration all the ways to pick the 4 winning numbers and the 2 losing numbers.
Answer:
7.5
Step-by-step explanation:
5.6+45,693u+ 2a+ = 7.5
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.
A sink can hold 10 gallons of water.How many quarts of water can the sink hold?
Answer:
The sink can hold 40 quarts of water
Step-by-step explanation:
1 gal = 10 qt
10 gal = 40 qt
Answer:
40
Step-by-step explanation:
There are 4 quarts in a gallon
4 quarts per gallon x 10 gallons = 40 quarts total
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
3x + y = 4
8x + 2y = 10
Answer:
I take it that we solve for x and y, so we have
3x + y = 4, so we have y = 4 - 3x
and plug that in to
8x + 2y = 10
8x - 6x + 8 = 10
so
2x = 2
x = 1
y = 4 - 3
y = 1
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
Someone please help me it’s so hard
Answer:
m=2
b=1
Equation is y=2x+1
12 more than p is equal to 67
Concerns about the climate change and CO2 reduction have initiated the commercial production of blends of biodiesel (e.g. from renewable sources) and petrodiesel (from fossil fuel). Random samples of 34 blended fuels are tested in a lab to ascertain the bio/total carbon ratio.(a) If the true mean is 0.9370 with a standard deviation of 0.0090 within what interval will 99% of the sample means fail?(b) If the true mean 0.9370 with a standard deviation of 0.0090, what is the sampling distribution of ¯X?
Answer:
a) 99% of the sample means will fall between 0.933 and 0.941.
b) By the Central Limit Theorem, approximately normal, with mean 0.937 and standard deviation 0.0015.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
(a) If the true mean is 0.9370 with a standard deviation of 0.0090 within what interval will 99% of the sample means fail?
Samples of 34 means that [tex]n = 34[/tex]
We have that [tex]\mu = 0.937, \sigma = 0.009[/tex]
By the Central Limit Theorem, [tex]s = \frac{0.009}{\sqrt{34}} = 0.0015[/tex]
Within what interval will 99% of the sample means fail?
Between the (100-99)/2 = 0.5th percentile and the (100+99)/2 = 99.5th percentile.
0.5th percentile:
X when Z has a pvalue of 0.005. So X when Z = -2.575.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]-2.575 = \frac{X - 0.937}{0.0015}[/tex]
[tex]X - 0.937 = -2.575*0.0015[/tex]
[tex]X = 0.933[/tex]
99.5th percentile:
X when Z has a pvalue of 0.995. So X when Z = 2.575.
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]2.575 = \frac{X - 0.937}{0.0015}[/tex]
[tex]X - 0.937 = 2.575*0.0015[/tex]
[tex]X = 0.941[/tex]
99% of the sample means will fall between 0.933 and 0.941.
(b) If the true mean 0.9370 with a standard deviation of 0.0090, what is the sampling distribution of ¯X?
By the Central Limit Theorem, approximately normal, with mean 0.937 and standard deviation 0.0015.
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
PLEASE HELP ASAP PLEASE
Answer:
Yo
So, if ya wanna solve this question and of course questions alike, ya gotta pay attention to the graph. mean All of these parabolic chart have the domain of R
Step-by-step explanation:
So there ya go
D=R
and now bout the range ya gotta find the vertex, which is:
[tex] x = \frac{ - b}{2a} \: \: y = \frac{Δ}{4a} [/tex]
now pay attention
X=2/–2=–1
y=–(–1)²–2(–1)+3=4
Now the highest point of your parabolic chart is 4 and the lowest point is endless which is (–♾,4]
Well, finally your answer is D
Find the Area of the Shaded Region.
Round to the nearest tenth if necessary.
18 m
25 m
5 m
50 m
9514 1404 393
Answer:
610 m²
Step-by-step explanation:
If we extend the horizontal line across the right-hand portion of the figure, then the figure is divided into two rectangles:
bottom: 5 m × 50 m = 250 m²
top: 18 m × 20 m = 360 m²
The sum of these areas is the shaded area:
shaded area = 250 m² +360 m² = 610 m²
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