Answer:
x:y
1:15
2:30
3:45
4:60
5:75
Step-by-step explanation:
[tex]10 + {8}^{2} \div 2 \times {3 }^{2} [/tex]
CAN SOMEONE HELP PLEASEEE
Answer:
1
Step-by-step explanation:
anything to power of 0 is 1
Answer:
1
Step-by-step explanation:
by the laws of exponents, any base with a power to 0 is equal to 1
x + 15 = 28
O A. x= 13
O B. x = 33
O C. x = 43
O D. x = 23
Answer:
A
Step-by-step explanation:
the answer is
x+15=28
x=28-15
x= 13
Answer:
A
Step-by-step explanation:
x+15=28
move 15 to the other side
and change the + to -
x=28-15
x=13
WILL GIVE BRAINLEST, What is the height of the trapezoid if the Area = 77 ft²?
Answer:
h = 7.333
Step-by-step explanation:
Answer: 7
Step-by-step explanation: I'm not sure about the actual mathematical explanation but I just took the quiz and I'm in the review right now :D
I need help what is the simplest form for the number 10 6/9?
Each edge of a Rubik's cube has a length of 5.7 centimeters. What is the volume of
the Rubik's cube?
185.193 Cm, 5.7x5.7x5.7 is the volume
The volume of the Rubik's cube is 183.51 cubic centimeters.
To find the volume of a Rubik's cube, we can use the formula V = s ³, where V represents the volume and s represents the length of each edge.
In this case, the length of each edge is given as 5.7 centimeters.
Substituting this value into the formula, we have:
V = (5.7 cm) ³
Calculating the volume:
V = 5.7 cm * 5.7 cm * 5.7 cm
V = 32.49 * 5.7
V = 183.51 cm ³
Therefore, the volume of the Rubik's cube is 183.51 cubic centimeters.
To know more about volume click here :
https://brainly.com/question/11168779
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Write 4/10 as a product of a whole number and a unit fraction
Answer:
4 times 1 over 10
Step-by-step explanation:
i think it is this hope it is right
Answer:
Step-by-step explanation:
it would be 4 times 1 over 10
Please help quick!
8 + 3x = −13
Answer:
x=-7
Step-by-step explanation:
Answer:
x=7
Step-by-step explanation:
Simplifying
-1(8 + -3x) = 13
(8 * -1 + -3x * -1) = 13
(-8 + 3x) = 13
Solving
-8 + 3x = 13
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '8' to each side of the equation.
-8 + 8 + 3x = 13 + 8
Combine like terms: -8 + 8 = 0
0 + 3x = 13 + 8
3x = 13 + 8
Combine like terms: 13 + 8 = 21
3x = 21
Divide each side by '3'.
x = 7
Simplifying
x = 7
what is the opportunity cost (in civilian output) of a defense buildup that raises military spending from 4.0 to 4.3 percent of a $20 trillion economy?
Answer:
hdhdhdhrheheheheheehhdhdududueueehheb
Suppose that A and B are two events in a sample space, S, which are independent and which have equal probability, p, of occurring. Suppose further that the probability that neither A nor B occurs is 0.81. Find the probability that both A and B occur.
Answer:
The probability that both A and B occur is P = 0.01
Step-by-step explanation:
Both events A and B have a probability p of occurring.
Then both events A and B have a probability (1 - p) of NOT occurring.
The probability that neither A or B occurs is equal to the product of the individual probabilities, and this is equal to 0.81, then:
(1 - p)*(1 - p) = 0.81
1 - 2*p + p^2 = 0.81
p^2 - 2*p + 0.19 = 0
We can solve this if we use Bhaskara's equation, the two solutions are:
[tex]p = \frac{-(-2) +- \sqrt{(-2)^2 - 4*1*0.19} }{2*1} = \frac{2 + - 1.8}{2}[/tex]
Then the two solutions are:
p = (2 + 1.8)/2 = 3.8/2 = 1.9
A probability must be a number between zero and one, and this is larger than one, so this solution can be discarded.
the other solution is:
p = (2 - 1.8)/2 = 0.2/2 = 0.1
This means that the probability that event A occurs is p = 0.1
And the probability that event B occurs is p = 0.1
The probability that both events occur is equal to the product of the individual probabilities, which is:
P = 0.1*0.1 = 0.01
Add 4/5 + 1/4 visually!
Answer:
1 and 1/20
Step-by-step explanation:
LCM of 5 and 4 = 20
4/5 = 16/20
1/4 = 5/20
What is the area of ACDE to the nearest whole number?
A) 87 cm
B) 105 cm
C)123 cm
D) 210 cm
Thanks!
Answer: its A
Step-by-step explanation:
The probability that Chloe acts hungry at 7pm given that she has already eaten dinner is 0.5. The probability that Chloe acts hungry at 7pm given that she has not had dinner is 0.99. Assume that there is probability 0.9 that Chloe has eaten dinner by 7pm on a given day. a) (1 pt) If Chloe is acting hungry at 7pm, find the probability that she has not had dinner yet. b) (1 pt) If Chloe is not acting hungry at 7pm, find the probability that she has already had dinner.
Answer:
a) P( [tex]Y^{C}[/tex] | X ) = 0.180
b) P(Y | [tex]X^{C}[/tex] ) = 0.998
Step-by-step explanation:
Let
P(X) - Probability that he acts hungry
P(Y) - Probability that he had ate dinner,
Given,
P(X | Y) = 0.5
P(X | [tex]Y^{C}[/tex] ) = 0.99
P(Y) = 0.9
a.)
P( [tex]Y^{C}[/tex] | X ) = [tex]\frac{P( X | Y^{C} ). P(Y^{C} ) }{P( X | Y^{C} ). P(Y^{C} ) + P( X | Y ) . P (Y) }[/tex]
= [tex]\frac{(0.99)(0.1)}{(0.99)(0.1) + (0.5)(0.9)} = \frac{0.099}{0.549}[/tex] = 0.180
⇒P( [tex]Y^{C}[/tex] | X ) = 0.180
b.)
P(Y | [tex]X^{C}[/tex] ) = [tex]\frac{(1 - P(X | Y ) ) . P(Y)}{P( X^{C} ) } = \frac{(1 - P(X | Y ) ) . P(Y)}{ 1 - P( X ) }[/tex]
= [tex]\frac{(1 - 0.5)(0.9)}{1 - [(0.99)(0.1) + (0.5)(0.9) ]} = \frac{(0.5)(0.9)}{1 - [(0.099) + (0.45) ]} = \frac{0.45}{1 - [0.540]} = \frac{0.45}{0.451}[/tex] = 0.998
⇒P(Y | [tex]X^{C}[/tex] ) = 0.998
In a particular year, the mean score on the ACT test was 25 and the standard deviation was 5.9. The mean score on the SAT mathematics test was 480 and the standard deviation was 130. The distributions of both scores are approximately bell-shaped. Round the answers to at least two decimal places.
Required:
Find the z-score for an ACT score of 26.
Answer:
The z-score for an ACT score of 26 is 0.17.
Step-by-step explanation:
Z-score:
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.
In a particular year, the mean score on the ACT test was 25 and the standard deviation was 5.9.
This means that [tex]\mu = 25, \sigma = 5.9[/tex]
Find the z-score for an ACT score of 26.
This is Z when X = 26. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{26 - 25}{5.9}[/tex]
[tex]Z = 0.17[/tex]
The z-score for an ACT score of 26 is 0.17.
The most common IQ tests have a standardized mean of 100 and a standard deviation of 15. Based on this information, use the empirical rule to answer the following question: If approximately 348 prospective college students are tested for their IQ, approximately what percentage of their scores will fall within one standard deviation of the mean
Answer:
Approximately 68% of their scores will fall within one standard deviation of the mean.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
By the Empirical Rule, approximately 68% of their scores will fall within one standard deviation of the mean.
Help I'll mark brainliest
Answer:
J
Step-by-step explanation:
Acute angles are less than 90 degrees.
Obtuse angles are more than 90 degrees.
So J is the only polygon that has angles less than 90 degrees and angles more than 90 degrees.
Fill in the blanks. See picture and give answers please as quickly as possible.
Answer: Global maximum: max{-(x - 1)^2 + 4} = 4 at x = 1
Step-by-step explanation:
what is the value of x in the triangle
Answer:
C
Step-by-step explanation:
A given field mouse population satisfies the differential equation dp/dt=.4p-450 where p is the number of mice and t is the time in months.
(a) Find the time at which the population becomes extinct if p(0)=1075
Round your answer to two decimal places in months.
(b) Find the initial population Po if the population is to become extinct in 1 year.
Round your answer to the nearest integer.
Po= mice
Answer:
a) 7.78 months
b) 1116
Step-by-step explanation:
Given -
[tex]\frac{dP}{dt} = 0.4p-450[/tex]
Integrating the above equation with respect to time, we get -
[tex]\int\ \frac{dP}{0.4p-450} = \int\ dt\\[/tex]
let us define new variable x
[tex]x = 0.4p - 450 \\dx = 0.4 dy[/tex]
substituting these values in above integral equation, we get -
[tex]\frac{1}{0.4} \int\ \frac{dx}{x} = \int\ dt\\ln x = 0.4 t + C\\x = ce^{0.4t}[/tex]
[tex]P (t) = \frac{C}{0.4} e^{0.4t} +1125\\[/tex]
at t = 0, P (0) = 1075, using this condition, we get -
[tex]\frac{c}{0.4} = -50\\P(t) = 50 e^{0.4t} +1125 \\t = 7.78\\P(0) = 1125 - \frac{1125}{e^{4.8}} = 1116[/tex]
what is the value of X in the equation 6X+3+4=1/2(9+10X)
Answer:
[tex]6x+3+4=\frac{1}{2}(9+10x)\\6x+7=\frac{9}{2}+5x\\x=-\frac{5}{2}[/tex]
Step-by-step explanation:
sana p mkatulong............
SOMEONE HELP I NEED TO PASS
ms adams shares out 40 pencils between niamh and jack in the ratio 3:5 how many pencils does each child get
Answer:
niamh gets 15 pencils and jack gets 25 pencils
Step-by-step explanation:
3+5=8
40/8=5
5*3=15
5*5=25
so the ratio for how many penicils each child is 15:25
Over the weekend, Jada made three times as much money babysitting than Han did mowing lawns. Jada made an additional $27 selling lemonade. From babysitting and selling lemonade, she has a total of $96 .If the equation is 3x+27=96 represents this situation, what does the variable x represent?
chase is comparing music subscription price . a 12 month with all ears cost $91.80 and a subscription with press play cost $19.35 which service cost less per month ?
Answer:
its press play
Step-by-step explanation:
Press Play Step-by-step explanation:
1 year 91 dollars or three month 13 dollars so press play would end up at 52 a year and all ears ends up at 91 a year
Order this set of integers from greatest to least:
Answer:
55
32
-3
-8
-19
-32
Step-by-step explanation:
Help plz plz if u do u will get 10 points
Answer:
C? Sorry if im wrong
Step-by-step explanation:
Answer:
B (10,40)
E (6,24)
Step-by-step explanation:
(2,8) is equal to (10,40) and (6,24)
3/8x5/4 Helpppppp pls
Answer:
9/25 or .36
Step-by-step explanation:
Solid A is dilated using a scale factor of 2⁄5, resulting in Solid B. Solid B is also dilated using a scale factor of 2⁄5, resulting in Solid C. If the volume of Solid B is 72 km^3, what is the volume of Solid A and Solid C?
Answer:
28.8 and 180
Step-by-step explanation:
you just times B by 2/5 to get C and divide it by 2/5 to get A
C = (72)(2/5) = 28.8 km³
A = (72)/(2/5) = 180 km³
We know the answers make sense because A shrinks to get B and B shrinks to get C, and our answers match that.
A jar contains 200 coins.
Zack pulls out a coin, records its value, and then puts the coin back into the jar.
Zack does this same process 8 times and records 1 quarter, 2 dimes, 2 nickels, and 3 pennies.
Based on these results, how many coins in the jar can Zach expect to have a value of $0.10 or more?
Answer:
10% ive done these in 6th
Step-by-step explanation:
60 61 62 63 64 65 66 67 68 69 70
Find the mean of the data shown in the dot plot above. Round your
answer to the nearest tenth.
Answer:
the mean is 65
Step-by-step explanation: