Answer:
4
Step-by-step explanation: I took the test :)
Solve for x. 2x^2+4x−1=0 Enter your answers in the boxes. HELP ASAP I DONT KNOW THIS ANSWER
Help The sum of two integers is 10. Their difference is 4.
What are the two integers?
Answer:
7 and 3
Step-by-step explanation:
Which model shows 1/4 divided by 3 ? A B C D
Answer:
You didn't attach a picture of the models?
Answer:
b or d
Step-by-step explanation:
What is the slope of the line shown below?
Answer:
A. 2
Step-by-step explanation:
Formula for slope of a line (m) = change in y / change in x = ∆y/∆x
Using the coordinates of two points on the line, (1, -4) and (6, 6):
Slope (m) = (6 - (-4)) / (6 - 1) = 10/5 = 2
Slope (m) = 2
Assume that the Poisson distribution applies and that the mean number of hurricanes in a certain area is 5.3 per year. a. Find the probability that in a year, there will be 3 hurricanes. b. in a 45-year period, how many years are expected to have 3 hurricanes ? c. How does the result from part (b) compare to a recent period of 45 years in which 5 years had 3 hurricanes? Does the Poisson distribution work well here?
Answer:
a) 0.12386 = 12.386% probability that in a year, there will be 3 hurricanes.
b) 5.57 years are expected to have 3 hurricanes, that is, between 5 and 6 years.
c) 5 years is very close to the mean of 5.57, which means that the Poisson distribution works well here.
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
In which
x is the number of sucesses
e = 2.71828 is the Euler number
[tex]\mu[/tex] is the mean in the given interval.
The mean number of hurricanes in a certain area is 5.3 per year.
This means that [tex]\mu = 5.3[/tex]
a. Find the probability that in a year, there will be 3 hurricanes.
This is P(X = 3).
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
[tex]P(X = x) = \frac{e^{-5.3}*5.3^{3}}{(3)!} = 0.12386[/tex]
0.12386 = 12.386% probability that in a year, there will be 3 hurricanes.
b. in a 45-year period, how many years are expected to have 3 hurricanes ?
0.12386 each year. So, for 45 years:
45*0.12386 = 5.57
5.57 years are expected to have 3 hurricanes, that is, between 5 and 6 years.
c. How does the result from part (b) compare to a recent period of 45 years in which 5 years had 3 hurricanes? Does the Poisson distribution work well here?
5 years is very close to the mean of 5.57, which means that the Poisson distribution works well here.
A magician's stage has a rectangular trapdoor whose width is (x+1/2) feet and whose length is 2x feet. The area of the trapdoor is 10 square feet. What is the value of x ?
Answer: x = 2 , − 2.5
12 degrees below 0 celsius
Answer:
Hey mate....
Step-by-step explanation:
This is ur answer.....
12 degrees below 0 means -12 Degrees
hope it helps you,
Follow me!
find the circumference of a circle with an area of 1,134.11
Step-by-step explanation:
C≈3.54
Using the formulas
A=πr2
C=2πr
Solving for C
C=2πA=2·π·1≈3.54491
Seventeen is eight more than three times a number. Write this equation.
Answer:
17 = 3x+8
Step-by-step explanation:
Plz help ASAP I BEEN ASKING SO MANY TIME BUT NOBODY HELP ME HELPP. Plz i been on this for 3 hours
Answer:
b, d, and e
Step-by-step explanation:
those are the three answers
Answer:
I would say b d and e to
Step-by-step explanation:
hope that helps
X+ 10 = 7
what is the solution to this question
Answer:=−3
Step-by-step explanation:
+10=7
+10−10=7−10
In HIJ, the measure of angle J=90 degrees, the measure of angle H=8 degrees, and HI=30 feet. Find the length of IJ to the nearest tenth of a foot.
Answer:4.2
Step-by-step explanation:
Students picked 144 ounces of strawberries to make strawberry jam. How many pounds of strawberries did they pick
Answer:
9 pounds
Step-by-step explanation:
I converted it
this is for anyone who has ever been cheated on before...
be confident and dont let anything stand in your way that dude who cheated on u will never find someone like you again;)
Answer:
thank you
Step-by-step explanation:
Carilah akar persamaan 2x2 - 3x - 5 = 0 dengen :
Metode Tabulasi
Metode Bisection
Answer:
x=1/-3
Step-by-step explanation:
2×2-3x-5=0
4-3x-5=0
4-5-3x=0
-1-3x=0
-3x=0+1
-3x=1
x=1/-3
What is the answer
7(2m+5)
Answer:
14m+35 is your answer ☺️☺️☺️
Answer:
14m+35
Step-by-step explanation:
7(2m+5)
7(2m)+7(5)
14m+35
5th grade math. correct answer will be marked brainliest
Answer:
10, 20, 40 and 50
5, 10, 20, 40
10, 50
NEED HELP PLEASE ! WILL MARL BRANIEST IF RIGHT
Answer:
[tex] f(-1) =\boxed{-11}\\ f(0) =\boxed{-4}\\f(2) =\boxed{14}[/tex]
Step-by-step explanation:
[tex]f(x)=\begin{cases} 9x -2 \:\: x < 0\\ 9x-4 \:\: x \geq 0\end{cases}\\\\\because \; -1 \: is \: less\: than \: zero\\\therefore f(-1) \: lies \: in \: the \: interval\: x<0\\\\f(-1) = 9(-1) -2 = -9-2 = -11\\f(-1)=\boxed{-11}\\\\Similarly,\: f(0) \:\&\: f(2)\: lies \: in \: the \: interval\: x\geq 0\\\\f(0) = 9x-4 = 9(0) - 4 = 0-4 = -4\\f(0) = \boxed{-4}\\\\f(2)=9x-4 = 9(2)-4 = 18-4 = 14\\\\f(2)=\boxed{14}[/tex]
Can anyone help me out on this
Answer:
y=x+10
Step-by-step explanation:
y=mx+b
y=1x+b
1 because for every 10 it goes to the right, it goes up 10 as well.
b=10 because the function crosses the y-axis at 10
so
y=x+10
Pleaseeeeeeeee someone help me..
Answer:
The answer would be C/third option
Step-by-step explanation:
To find volume you have to do LxWxH which is shown in the third option
Answer: the answer is c you multiply length times width times height
Step-by-step explanation:
A population has a standard deviation of 3.26. What is the approximate standard error of the mean for a sample size of 35?
A.
1.65
B.
0.55
C.
0.09
D.
1.10
Answer:
0.55
Step-by-step explanation:
Standard Error of the mean= Standard deviation/sample size
[tex]=\frac{3.26}{\sqrt{35} }[/tex]
[tex]=\frac{3.26}{5.916}[/tex]
[tex]=0.55104057[/tex]
About 0.55
Please give me brainliest, I really need it.
Answer:
B. 0.55
Step-by-step explanation:
correct on plato:)
If m = 27 and n = 4, what is the value of the following expression?
Answer:
2
Step-by-step explanation:
m - 5 • n + 5
plug it in
27- 5 * 4+5
well, we gotta follow PEMDAS (there are no parentheses)
5*4
20
now we have
27-20+5
20+5
25
27-25
2
Malaya wrote the expression below.
6- 33 = (22+5)
Which value is equivalent to Malaya's expression?
A. -3
B. 3
C. 5
D. -1
pls help me on this question pls and tell me how u got the answer
Answer:
473 yd²
Step-by-step explanation:
bottom area = 11x11 = 121 yd²
each of the 4 sides = 11x16x0.5 = 88 yd²
4(88) + 121 = 473 yd²
WILL GIVE BRAINLIEST
Answer: i think its b
Step-by-step explanation:
consider the enlargement of the pentagon
what is the value of x, rounded to the nearest tenth?
a. 2.1 centimeters
b. 3.3 centimeters
c. 7.0 centimeters
d. 15.0 centimeters
Answer:
b. 3.3 centimeters
Step-by-step explanation:
[tex]\frac{7}{x} =\frac{15}{7} \\\\15x = 49\\x=3.3[/tex]
Lincoln is preparing many gifts for a family holiday party. Each gift must either be
wrapped with wrapping paper or prepared in a gift bag. Lincoln can wrap a single gift
in 6.5 minutes and he can do a giftbag in 2 minutes. Lincoln prepared a total 13 gifts
in 57.5 minutes. Write a system of equations that could be used to determine the
number of gifts Lincoln wrapped and the number of giftbags he prepared. Define the
variables that you use to write the system.
Let
Let
System of Equations:
Submit Answer
Answer:
Im not sure but i think you add the vaariableafter the +
Find each percent decrease. Round to the nearest percent.
From 39 seconds to 13 seconds
O 53%
0 67%
057%
O 63%
Answer:
67%
Step-by-step explanation:
First of all, we must find the decrease;
39 - 13
=26
Then we can find the percentage decrease
26/13 ×100 =66.666..which can be written as 67.
Can someone plz answer this
10(1+3d)=-20
step by step pls
Answer:
d=-1
Step-by-step explanation:
10(1+3d)= -20
divide both sides by 10
1+3d=-2
move the costant to the right, change the sign
3d=-2-1
caclulate
3d=-3
divide both sides by 3
d=-1