Answer:
-8/45
Step-by-step explanation:
4/5 * -2/9
Multiply the numerators
4*-2 = -8
Multiply the denominators
5*9 = 45
numerator over denominator
-8/45
2x + (-x) + 3 + (-2)
Answer:
-x+3
Step-by-step explanation:
hope this helps
A farmer is having problems with birds eating her crops. She tries putting up different numbers of scarecrows to keep the birds away. The average number of crops eaten is 200, and the average number of scarecrows she has put up is 20.
The farmer finds some of the linear regression equation:
number of crops eaten = a - 0.8*(number of scarecrows).
What is the value of the intercept?
Answer:
The value of the intercept is a=216.
Step-by-step explanation:
We define "s" as the number of scarecrows and "C" the number of crops eaten.
The farmer finds the linear regression equation:
[tex]C=a-0.8s[/tex]
We have a linear function, for which we only know the slope (m=0.8) and a point within it (when s=20, C=200).
We can find a replacing the variables C asn s with the known point (20, 200):
[tex]C=a-0.8s\\\\C(20)=a-0.8(20)=200\\\\a=200+0.8*20=200+16\\\\a=216[/tex]
The value of the intercept is a=216.
A pine cone is 40 feet above the ground when it falls from a tree. The height h in feet of the pine cone above the ground can be modelled by h=-16t^2+40, where t is the time in seconds since the pine cone started to fall. Solve the equation for t. Write your answer in simplest form.
Answer:
Step-by-step explanation:
Given
height of the pine cone above the ground can be modelled by
[tex]h=-16t^2+40[/tex]
When pine cone reaches the ground [tex]h=0[/tex]
[tex]\Rightarrow 0=-16t^2+40[/tex]
[tex]\Rightarrow 40=16t^2[/tex]
[tex]\Rightarrow t=\sqrt{\frac{40}{16}}[/tex]
[tex]\Rightarrow t=\frac{\sqrt{40}}{4}[/tex]
[tex]\Rightarrow t=\frac{2\sqrt{10}}{4}[/tex]
[tex]\Rightarrow t=\frac{\sqrt{10}}{2}[/tex]
[tex]\Rightarrow t=1.58\ s[/tex]
Thus cone take 1.58 s to reach ground
In the number 6,789,043, which digits is in the millions place?
Answer:
the number 6 is in the millions place
Step-by-step explanation:
the millions place is the sixth digit in the number family
and it also has six numbers after the number
Which are the center and radius of the circle with this equation?
x^2 - 4x + y^2 + 2y = 0
Answer:
C = (2, - 1)
[tex]r \: = \: \sqrt{5} [/tex]
Step-by-step explanation:
Look at the picture
90 learnes are asked which school clubs they attend.(D) represent dram club,(M) for music club and S for sport club.39 learners attend music club,26 lerners attend exactly two clubs,35 learners attend drama club. How many learners attend music club only
Answer:
The number of students who attend music club only is 13.
Step-by-step explanation:
The three different types of clubs are:
D = drama club
M = music club
S = sports club
The information provided is:
n (M) = 39
n (D) = 35
n (Exactly 2 clubs) = 26
Consider the Venn diagram attached.
From the Venn diagram it is clear that 13 students attended the Music club only.
Thus, the number of students who attend music club only is 13.
Sara can type 80 words a minute.
How many words can be typed in 6.5 minutes?
Answer:
520
Step-by-step explanation:
80 times 6.5 = 520
so she can type 520 words in 6.5 mins
Answer:
The answer would be 520
Step-by-step explanation:
We have 80 words per minutes:)
It asks how much words can we type in 6.5 minutes.
well if we do 80 words per minute we can multiply the values
80 words x 6 minutes is 480
But wait we have .5 left
so we do 80 divided by 2 and get 40
then we go 480 plus 40 and get 520
we could have straight out multiplyed it and got this but thats no fun.
520 Words for 6.5 mins :)
Can i get brainliest
What is the area of the obtuse triangle with a base of 16 and height of 8
Answer:
64
Step-by-step explanation:
The area of a triangle is
A = 1/2 bh
A = 1/2 (16) *8
A =64
Answer:
[tex]64[/tex]
Step-by-step explanation:
[tex]area \\ = \frac{1}{2} \times b \times h \\ = \frac{1}{2} \times 16 \times 8 \\ = 64[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
At the school store, Budi bought 161616 pencils, 222222 erasers, and 141414 stickers.
How many total items did Budi buy at the school store?
Answer: The answer is 606060.
Step-by-step explanation: Its pretty simple all you do is add like this and you will get the answer you are needing. If this helped leave a like and try to respond. ❤
Answer:
606060.
Step-by-step explanation:
Please help me I’ve been stuck for awhile
Hey there! I'm happy to help you out!
Let's think of our original price ($P) as 100%. This is also the same thing as 1 because 100% is one whole thing.
Now, we see that he got a 15% off discount. Now, we just subtract 15% from 100% to see what percent he actually payed.
100%-15%=85%
This means that $R is 85% of $P (100%).
Answer A is not correct because 0.85% is less than 1%, which is not 85%.
Answer B is not correct either because 0.15% is also less than 1%.
Answer C is correct because $R is 85% of the original cost.
I hope that this helps! Have a wonderful day!
To solve the equation, -6(x + 2) = 30, you can distribute the negative number and then use the
ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.
Adding the negative value in front of x flips the graph lacrosse the Y axis and compressed it vertically.
The answer is C.
Answer:
C. The graph of G(x) is the graph of F(x) flipped over the y-axis and compressed vertically.
Step-by-step explanation:
The negative in front of the 2 made the function flip over the y-axis. While the 2, compressed the function a little, making it so the function touched 2, vertically.
Solve for yyy.
6=2(y+2)
y=
Find the value of x. Round to nearest tenth.
A. 24.2
B. 17.0
C. 20.1
D. 16.0
Answer:
The answer to the question is A
How many milliliters is 719.01 liters?
Answer:
719010
Step-by-step explanation:
A fire hydrant with a blue cap provides water at a rate of 1,500 gallons per minute. A fire hydrant with a green cap provides water at a rate of 1,000 gallons per minute. A fire hydrant with a purple cap provides water at half the rate of a fire hydrant with a green cap.
Part A
Which equation relates the flow of water from the blue hydrant, b, to the flow from the green hydrant, g.
A. b = 13g
B. b = 12g
C. b = 23g
D. b = 32g
Part B
Which equation relates the flow of water from the purple hydrant, p, to the flow from the blue hydrant, b.
A. p = 13b
B. p = 12b
C. p = 23b
D. p = 34b
Answer:
Part A = B.
Part B = A.
Step-by-step explanation:
Suppose n balls are distributed in n boxes in such a way that each ball chooses a box indepen- dently of each other. (a) What is the probability that Box #1 is empty? (b) What is the probability that only Box #1 is empty? (c) What is the probability that only one box is empty? (d) Given that Box #1 is empty, what is the probability that only one box is empty? (e) Given that only one box is empty, what is the probability that Box #1 is empty?
Answer:
Check the explanation
Step-by-step explanation:
a) Probability that Box #1 is empty is computed here as:
= Number of ways to distribute each of the the n balls in remaining (n - 1) boxes / Total ways to distribute n balls into n boxes
= [tex]\frac{(n-1)^n}{n^n} = (1 - \frac{1}{n})^n[/tex]
This is the required probability here.
b) Probability that only 1 box is empty is computed here as:
= Number of ways to choose one of the remaining (n - 1) boxes such that it will have 2 balls * Number of ways to select 2 balls of that box* permutation of remaining (n - 2) balls into (n - 2) boxes / Total ways to distribute n balls into n boxes
= [tex]\frac{\binom{n-1}{1}\binom{n}{2}(n-2)!}{n^n}[/tex]
= [tex]\frac{(n-1)n!(n-2)!}{2n^n}[/tex]
= [tex]\frac{n!(n-1)!}{2n^n}[/tex]
This is the required probability here.
c) Probability that only 1 box is empty is computed here as:
= Number of ways to select a box which would be empty * Probability that only that box would be empty ( from previous part)
= [tex]\frac{n*n!(n-1)!}{2n^n}[/tex]
= [tex]\frac{(n!)^2}{2n^n}[/tex]
This is the required probability here.
d) Given that box #1 is empty, probability that only 1 box is empty is computed here as:
= Probability that only box 1 is empty / Probability that box 1 is empty
We will use the answers from parts a) and b) here to get:
=[tex]\frac{ \frac{n!(n-1)!}{2n^n}}{\frac{(1 - n)^n}{n^n}}[/tex]
= [tex]\frac{n!(n-1)!}{2(1-n)^n}[/tex]
This is the required probability here.
e) Given that only 1 box is empty, probability that box #1 is empty is computed here as:
= 1/n as each box is equally likelt to be empty
Therefore 1/n is the required probability here.
Which point lies on the Y axis been on the X axis (0,0) (0,-3) (1,3) (3,0)
Answer:
(0,-3)
Step-by-step explanation:
Answer: The second number goes on your X axis and the first number goes on your Y axis .
Step-by-step explanation:
(0,0)=Y,X
a) what is the theoretical probability of landing on A ? write fraction in simplest form .
Answer:
13/50; 13/50
Step-by-step explanation:
a): Theoretical=# of favorable outcomes/# of total outcomes
To find the total, add 21+26+25+28, which is 100
A has a frequency of 26.
That would be 26/100, which is also 13/50
b): Experimental probability is based on the amount of times the spinner is spun. Since A is the only vowel in "MATH", we would take that fraction and multiply it by 100, or the number of times.
13/50*100=13*2=26
Put that over 100, which would be 26/100, which is also 13/50.
Hope this helped! Have a good rest of your day!
Estimate a 15% tip on a dinner bill of $52.87 by first rounding the bill amount to the nearest ten dollars.
Answer:
$ 7.9
Step-by-step explanation:
Amount of bill = $52.87 = $52.9
Amount of tip = 15% of $52.9
[tex] = \frac{15}{100} \times 52.9 \\ \\ = 0.15 \times 52.9 \\ = 7.935 \\ = \$ \: 7.9 \\ [/tex]
ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.
Answer:
x>108
Step-by-step explanation:
Please can someone help?
I will give you brainliest and points :)
Answer:
216 ft³
Step-by-step explanation:
A cone has 3 sides
72ft³ times 3 is 216 ft³
Answer:
216 ft by 3
Step-by-step explanation:
This is my alt account btw so don’t brainliest this account, the other one.
5. Garrett and Jeffrey are planning a treasure hunt. They decide to place a treasure at a point that is a
distance of 5 units from the x-axis and 3 units from the y-axis. Jeffrey places a treasure at point J, and
Garrett places one at point G. Who put the treasure in the right place? Explain how you know.
Answer:
Garret placed the treasure at the right place.
Step-by-step explanation:
The Cartesian plane can be used to locate the position of any given point with a coordinate. It consists of two numbered lines perpendicular to each other and intersecting at point zero of the lines.
From the statements given, 5 units from x-axis is not the same as 5 units on x-axis. Also, 3 units from y-axis is not the same as 3 units on y-axis.
So, distance 5 units from x-axis implies that a point 5 units after the x-axis. And also, distance 3 units from y-axis means 3 units after the y-axis.
With these conditions of the coordinate of the treasure, Garrett placed the treasure at the right place.
Answer:
carl amd melly was so kind
A. Circle
B. Kite
C. Rectangle
D. Trapezoid
ANY ONE PLZZ THIS IS DUE IN TWO HOURS!!!!!!!!
Answer:
it is option A bro
follow me if it is helpful
Helpppp plzzzz what is the measure of /_x
Answer:
100
Step-by-step explanation:
If the general term of a sequence is 4 then the sequence is
Answer:
4,8,12,16,24,32,36.......
Step-by-step explanation:
A 100 gallon tank initially contains 100 gallons of sugar water at a concentration of 0.25 pounds of sugar per gallon suppose that sugar is added to the tank at a rate of p pounds per minute that sugar water is removed at a rate of 1 gallon per minute and that water in the tank is kept well mixed. What value of P should we pick so that that when 5 gallons of sugar solution is left in the tank the concentration is .5lbs of sugar/gallon?
At the start, the tank contains
(0.25 lb/gal) * (100 gal) = 25 lb
of sugar. Let [tex]S(t)[/tex] be the amount of sugar in the tank at time [tex]t[/tex]. Then [tex]S(0)=25[/tex].
Sugar is added to the tank at a rate of P lb/min, and removed at a rate of
[tex]\left(1\frac{\rm gal}{\rm min}\right)\left(\dfrac{S(t)}{100}\dfrac{\rm lb}{\rm gal}\right)=\dfrac{S(t)}{100}\dfrac{\rm lb}{\rm min}[/tex]
and so the amount of sugar in the tank changes at a net rate according to the separable differential equation,
[tex]\dfrac{\mathrm dS}{\mathrm dt}=P-\dfrac S{100}[/tex]
Separate variables, integrate, and solve for S.
[tex]\dfrac{\mathrm dS}{P-\frac S{100}}=\mathrm dt[/tex]
[tex]\displaystyle\int\dfrac{\mathrm dS}{P-\frac S{100}}=\int\mathrm dt[/tex]
[tex]-100\ln\left|P-\dfrac S{100}\right|=t+C[/tex]
[tex]\ln\left|P-\dfrac S{100}\right|=-100t-100C=C-100t[/tex]
[tex]P-\dfrac S{100}=e^{C-100t}=e^Ce^{-100t}=Ce^{-100t}[/tex]
[tex]\dfrac S{100}=P-Ce^{-100t}[/tex]
[tex]S(t)=100P-100Ce^{-100t}=100P-Ce^{-100t}[/tex]
Use the initial value to solve for C :
[tex]S(0)=25\implies 25=100P-C\implies C=100P-25[/tex]
[tex]\implies S(t)=100P-(100P-25)e^{-100t}[/tex]
The solution is being drained at a constant rate of 1 gal/min; there will be 5 gal of solution remaining after time
[tex]1000\,\mathrm{gal}+\left(-1\dfrac{\rm gal}{\rm min}\right)t=5\,\mathrm{gal}\implies t=995\,\mathrm{min}[/tex]
has passed. At this time, we want the tank to contain
(0.5 lb/gal) * (5 gal) = 2.5 lb
of sugar, so we pick P such that
[tex]S(995)=100P-(100P-25)e^{-99,500}=2.5\implies\boxed{P\approx0.025}[/tex]
What’s the correct answer for this?
Answer:
Step-by-step explanation:
Bring to one side
x^2-12x+y^2-8y+27=0
Complete the square
(x^2-12x+A)+(y^2-8y+B)=-27
Answer:
First option is the correct answer
The equation of the circle is: [tex](x-6)^2+(y-4)^2= 25[/tex]
The center is at (6, 4), and the radius is 5 units.
Step-by-step explanation:
[tex]x^{2} -12x+27=-y^2 +8y\\\\x^{2} -12x+27+y^2 -8y=0\\(x^{2} -12x+36)-36+27+(y^2 -8y +16)-16=0\\(x^{2} -12x+6^2)+(y^2 -8y +4^2)-25=0\\(x-6)^2+(y-4)^2= 25\\(x-6)^2+(y-4)^2= 5^2\\Equating\: it \: with\\(x-h)^2+(y-k)^2= r^2\\we\:find:\\Center = (h,\:k) = (6,\:4)\\Radius \:(r) = 5[/tex]
Find the mean for each set of data.
3. cost of tennis shoes: $57, $63, $60, $59, $61
Answer: the men’s of this set of numbers is 60
Step-by-step explanation:
Add all the numbers together and then divided but the amount of numbers in the set
Identify the radius and the center of a circle whose equation is (x – 5)² + y² = 81.
The radius of the circle is
units.
The center of the circle is at (
,
).
Answer:
Center = (5, 0)
Radius = 9
Step-by-step explanation:
Look at the picture
The radius of the circle is 9units and the center of the circle is at (5, 0)
Equation of a circleThe standard equation of a circle is expressed as:
(x-a)^2+(y-b)^2 = r^2
where
r is the radius of the circle
(a, b) is the centre of the circle
GIven the equation is (x – 5)² + y² = 81.
Compare both equations
a = 5, b = 0
r^2 = 81
r = 9units
Hence the radius of the circle is 9units and the center of the circle is at (5, 0)
Learn more on equation of circle here: https://brainly.com/question/14150470