Answer:
84%
Step-by-step explanation:
Okay, I want to work out the chance that was between 20 and 60. Other words will find the area. 20 2 60 this area here. And the answer is because the area under the curve is always one in total. So the workout p of 20, less than x. Less than 60 here. I need a calculator And the input on the TI 84 plus is as follows, you press the second blue button, second, followed by vars V A R S, that's by the arrow keys on the right, that brings up the menu for distributions and what you want is normal C D E F Number two on the list, so normal C D E F. You press enter and it was a lower upper, lower is 20 upper is 60. The mean is 50 and the standard deviation is 10, There's a four number input. So 20 for lower 60 for upper 50 for the mean And 10 for the s. d. Standard deviation so, and then paste that onto the screen and press enter and we get 0.83999. And hear what they want. There's a percent to have some more places.
Therefore, it will be 84.00 percent. The two decimal places
A month of the year is chosen at random. What is the probability that the month starts with the letter J or the letter M
Answer:
hope it's helpfull...... ;)
The diameter of a circle is 12 centimeters. What is the circle's area?
BEST ANSWER :
CIRCLE
solve for area
A = 113.1 cm^2
d diameter = 12 cm.
Answer:
Area of circle = π r^2
Step-by-step explanation:
Diameter = 12
Radius = 12/2
= 6
Area = π x 6^2
= π x 36
= 113.04
therefore the area of the circle is 113.04
Based on probability and if it is appropriate for a decision to be left up to chance, choose every situation that is both statistically fair and morally fair.
The situations that are both statistically fair and morally fair are Situation 2, Situation 3 and Situation 5
How to categorize the situations?For a situation to be fair, the probability of every outcome must be equal.
Using the above definition, we can now analyze each option
Situation 1
Letters = 26
P(Vowel) = 5/26
P(Consonant) = 21/26
Both probabilities are not equal.
Hence, this situation is not fair
Situation 2
Participants = 4
P(Each) = 1/4
All probabilities are equal in the above scenario i.e. 1/4
Hence, this situation is fair
Situation 3
Cousins = 5
P(Each) = 1/5
All probabilities are equal in the above scenario i.e. 1/5
Hence, this situation is fair
Situation 4
Numbers = 5 i.e. 2 to 6
P(Prime) = 3/5
P(Composite) = 4/6
Both probabilities are not equal.
Hence, this situation is not fair
Situation 5
Roommates = 5
Cards = 5
Aces = 4
P(Each) = 1/5
All probabilities are equal in the above scenario i.e. 1/5
Hence, this situation is fair
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Review the steps of the proof of the identity
At which step was an error made?
sin (A-3) - COSA.
= A.
step 1
step 2
3п
sin
step 3
step 4
Step 1: = sinAcos
3 п
2
-
COSAsin
n ()
Step 2: = (sinA)(0) + COSA( - 1)
Step 3: = (sinA)(0) + (1) (COSA)
Step 4: = 0 + COSA
Step 5: Cos A
Answer:
step 2
and then step 3 : the error neutralized the error of step 2
Step-by-step explanation:
sin(a + b) = sin(a)cos(b) + cos(a)sin(b)
and because
sin(-b) = -sin(b)
cos(-b) = cos(b)
we have
sin(a - b) = sin(a)cos(-b) + cos(a)sin(-b) =
= sin(a)cos(b) - cos(a)sin(b)
3pi/2 = 270° or -90°.
sin(3pi/2) = sin(270) = sin(-90) = -1
that means, it is the full radius straight down from the center of the circle.
cos(3pi/2) = cos(270) = cos(-90) = cos(90) = 0
so, step 1 is correct :
sin(A - 3pi/2) = sin(A)cos(3pi/2) - cos(A)sin(3pi/2) =
= sin(A)×0 - cos(A)×(-1) (correct step 2)
but as we see, the provided step 2 is incorrect.
it should have been the indicated
sin(A)×0 - cos(A)×(-1)
and NOT the provided
sin(A)×0 + cos(A)×(-1)
step 3 based on the erroneous step 2 should then have been
sin(A)×0 - (1)cos(A)
but instead another error with the sign was made that neutralized the error of step 2 and we got after this second mistake by pure chance the overall correct step 3
sin(A)×0 + (1)cos(A)
so, again, the first error was made in step 2.
but technically, there was also a consecutive error made in step 3 to bring everything back to the correct approach.
solve the equation 3x^2-x-3=0 to the nearest tenth
Answer:
You use the quadartic foruala for this problem your fanial anwers is
x=1 + or - radical 37 / 6.
1+ radical 37 over 6 =1.180460422
To the nearest tenth =1.2
1-radical 37 over 6= -0.8471270884
To the nearest tenth=-0.8
least to greatest:
1.11, 1 1/10, the square root of 3, 1.73, 1 2/5
Answer:
least to greatest:
1 1/10, 1.11, 1 2/5, 1.73, the square root of 3
Step-by-step explanation:
1 1/10 = 1.10
1.11 = 1.11
1 2/5 = 1.4
1.73 = 1.73
the square root of 3 is approximately 1.732
does anyone live in the concord, NC area? I need to get out of this place TwT
that's tuff you live in NC
Find the maximum value on (0, infinity) for f(x)=7x-2xlnx
f'(x)>0 for all x>0. Therefore f(x) is strictly increasing on the inverval (0,∞).
How to obtain the maximum value of a function?To find the maximum of a continuous and twice differentiable function f(x), we can firstly differentiate it with respect to x and equating it to 0 will give us critical points.
f(x) = max{0,x} then f(x)=0 if x<0 and f(x)=x if x≥0.
f(x)=7x-2xlnx
When x tends to -∞, f is the constant function zero, therefore limit n tends to infinity f(x) = 0.
When x tends to ∞, f(x)=x and x grows indefinitely. Thus limit n tends to infinity f(x) = infinity.
f is differentiable if x≠0. If x>0, f'(x)=1 (the derivative of f(x) = x and if x<0, f'(0)=0 (the derivative of the constant zero).
In x=0, the right-hand derivative is 1, but the left-hand derivative is 0, hence f'(0) does not exist,
f'(x)>0 for all x>0. Therefore f(x) is strictly increasing on the inverval (0,∞).
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30 POINTS!!!!! HELP QUICK
Find the area of the shaded region.
Use 3.14 for pi.
The area of the shaded region is 994.74 square in if the area of the circle is 1384.74 square in and the area of the triangle is 390 square in.
What is a circle?It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)
As we know, the area of the circle is given by:
A = πr²
r = 21 in
A = 3.14(21)² = 1384.74 square in
Area of the triangle:
a = (39)(20)/2 = 390 square in
The area of the shaded region = 1384.74 - 390 = 994.74 square in
Thus, the area of the shaded region is 994.74 square in if the area of the circle is 1384.74 square in and the area of the triangle is 390 square in.
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HELP ASAP. Worth 10 points
Judy studied for 7/12 of an hour, and her sister studied for 2/3 of an hour. About how much time did they spend studying altogether?
They studied for half an hour.
They studied for an hour.
They studied for a little less than an hour.
They studied for a little more than an hour.
Answer:
They studied for a little more than an hour?
Step-by-step explanation:
7/12 of 60 Mins is 35 mins and 2/3 is 40 mins 40+35=75 mins
which is a little more than an hour, 15 mins more to be precise.
A die is being rolled. Find the probability of rolling less than a 3.
Answer: 2/6
Step-by-step explanation:
Probability is nothing but the
number of favourable outcomes / number of total outcomes
Can you please help me with 12 please? I will give an brainlist
Answer:
[tex]x+(\frac{1}{2} x + 12) =[/tex] number of postcards Simone has now
Step-by-step explanation:
x = the number of postcards in Simone's collection
Simone bought 12 more than half the number of postcards in her collection.
So Simone bought half her collection ( [tex]\frac{1}{2} *x = \frac{1}{2} x[/tex] ) plus 12 more postcards.
[tex](\frac{1}{2}x +12)[/tex] = number of postcards Simone bought
Write an expression to show how many pstcards she has now.
[tex]x+(\frac{1}{2} x + 12) =[/tex] number of postcards Simone has now
Let she has p no of postcards before .
She bought 12 more than the half of p
p/2+12Currently she has
p+p/2+123p/2+12(3p+24)/2 postcardsif a shoelace drawer is 12.49 inches and a paperclip drawer is 4.579 inches about how many inches wider is the shoelace drawer than the paperclip drawer
The shoelace drawer is 7.911 inches wider than the paperclip drawer.
Measurement difference between two drawersThe height of shoelace drawer is = 12.49 inches
The height of paperclip drawer is = 4.579 inches
Therefore the measurement difference between the two drawer is = 12.49 inches - 4.579 inches
= 7.911 inches
Therefore, the shoelace drawer is 7.911 inches wider than the paperclip drawer.
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• A. All real numbers
• B. All real numbers except 2
• C. All real numbers except -6
• D. All real numbers except -6 and 2
Answer:
Option C
Step-by-step explanation:
you cancel the whole parentheses.
So you know, x+6 can't equal to 0.
that's why there is a choice that is all real numbers but not -6.
Answer:
A. All real numbers
Step-by-step explanation:
Given
(x - 2)(x + 6)/7(x + 6) = (x - 2)/7On cross multiplying,
(x - 2)(x + 6)(7) = (x - 2)(x + 6)(7)LHS = RHSThis means on applying any value for x, both sides will be equalHence, the correct option is Afind the volume pleaseeeee
Need help!
Y=-2x^2-4x+6
Answer: (1, 0) , (-3, 0)
Step-by-step explanation:
I used an app. T-e-e-h-e-e
Help me please asap!!! NOTE : PLEASE LOOK AT THE 3 PICTURES & I NEED A EXPLANATION
Step-by-step explanation:
3/5 - 1/3 = 4 /15
5/6 - 2/3 = 5/6 - 4/6 = 1/6
7/9 - 2/3 = 7/9 - 6/9 = 1/9
5/8 - 1/6 = (15 - 4) /24 = 11/24
(All the above ones I have taken common factor and subtracted them)
5 x 9/10 = 45/10 = 9/2 (simplified)
2/7 x 3 = 6/7
3 x 2/15 = 6/15
4x 2/6 = 8/6 = 4/3 (simplified form)
Hope this helps!!!
how much larger is 8 x 10^8 than 2 x 10^5
Answer:
799800000 larger
Step-by-step explanation:
8 × (10 × 8) = 8000000002 × (10 × 5) = 200000
So . . Subtract
800000000 - 200000 = 799800000
Answer: 799800000
Step-by-step explanation: For 8 x 10^8, do 10 x 10 x 10 10 x 10 x 10 10 x 10 to get 100,000,000 and x 8 is 800,000,000
For 2 x 10^5 do 10^5 ( 10 x 10 x 10 x 10 x 10) which is 100,000 and then x 2 is 200,000
Then subtract.
800,000,000 - 200,000 is 799800000
Zahara asked the students in her class their gymnastic scores and recorded the scores in the table shown below:
Gymnastic Scores
Score Number of Students
0 1
1 1
2 2
3 6
4 4
5 3
6 2
Based on the table, what is the mean gymnastic score?
Answer:
It would be 3.5
Step-by-step explanation:
1+1+2+6+4+3+2
so the mean is 3.5
I need help with writing the number as a decimal.
The question is
Two hundred thirty eight and forty-nine thousandths
Answer: 0.23849
Step-by-step explanation:
0.23849
2 is tenth
3 is hundredth
8 is thousandth
4 is ten thousandth
9 is hundred thousandth
The radius of a circle with area A is approximately $\sqrt{\frac{A}{3}}$ . The area of a circular mouse pad is 48 square inches. Estimate its radius to the nearest tenth
The radius of the circular mouse pad is 3.91 inches if the area of a circular mouse pad is 48 square inches.
What is a circle?It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)
We have:
The area of the circular mouse pad = 48 square inches
The area of the circle:
[tex]\rm A = \pi r^2[/tex]
[tex]\rm 48 = \pi (r)^2[/tex]
Take π = 3.14
r = 3.909 inches ≈ 3.91 inches
Thus, the radius of the circular mouse pad is 3.91 inches if the area of a circular mouse pad is 48 square inches.
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I NEED HELP! ASAP, THIS IS SO HARD AND MY BRAIN HURTS, IF U HELP ME WITH OTHER QUESTIONS LIKE THIS ILL GIVE U 50+ POINTS
Answer:
24.3
Step-by-step explanation:
We need to follow the order of operations PEMDAS:
ParenthesesExponentsMultiplication and Division (from left to right)Addition and Subtraction (from left to right)Carry out the operation in the parentheses first:
3³ + 14.7 ÷ 7 - (1.2 × 4)
⇒ 3³ + 14.7 ÷ 7 - 4.8
Now the exponent:
⇒ 3³ + 14.7 ÷ 7 - 4.8
⇒ (3 × 3 × 3) + 14.7 ÷ 7 - 4.8
⇒ 27 + 14.7 ÷ 7 - 4.8
Now, the division (there is no multiplication):
⇒ 27 + 14.7 ÷ 7 - 4.8
⇒ 27 + 2.1 - 4.8
Finally, carry out the addition and subtraction (from left to right)
⇒ 27 + 2.1 - 4.8
⇒ 29.1 - 4.8
⇒ 24.3
ANSWER FAST, WILL MARK!!!
Answer:
(2, 3)
Step-by-step explanation:
The solution of two equations on a graph is where they intersect. In this case (2, 3) is the answer.
Answer:
(x,y) = (2,3) so C?
Step-by-step explanation:
=> y = x/2+2
=> y = x + 1
from that info, you can tell y = y, meaning x/2 + 2 = x+1
solving:
=> x/2 + 2 = x + 1
=> 1/2x +2 = x + 1
=> -x -x
=> - 1/2x + 2 = 1
=> -2 -2
=> -1/2x = -1
=> * 2/-1 * 2/-1
=> x = 2
solve using substitution now:
(let's plug it in to the easiest y = statement)
=> y = x+1
=> y = 2 +1
=> y = 3
(2,3) is your answer
This figure is divided into triangles. What fraction of the figure is each triangle?
Answer:
a) 1/8
Step-by-step explanation:
There are 8 triangle in that shape. So, the fraction will be 1/8. Hence, option (a) is the correct answer.
write the ratio in the simplest form 40kg : 480g
Answer: 1kg : 12g
Step-by-step explanation: Ratio in the simplest form is to divide both numbers by the greatest factor.
40 divided by 40 is 1
480 divided by 40 is 12
The answer is 1 kg : 12g
The two expressions below have the same value when rounded to the nearest hundredth. log subscript 5 baseline b. log subscript 9 baseline 48 what is the approximate value of log b to the nearest hundredth? 0.93 1.23 9.16 65.53
The value of log b to the nearest hundredth is 1.23. The correct option is the second option - 1.23
Evaluating logarithmFrom the question, we are to determine the value of log b to the nearest hundredth
From the given information
[tex]log_{5}b = log_{9}48[/tex]
But,
[tex]log_{9}48 =1.76186[/tex]
∴ [tex]log_{5}b =1.76186[/tex]
By one of the laws of logarithm
∴ [tex]b =5^{1.76186}[/tex]
b = 17.0407
Then,
log b = log(17.0407)
= 1.2315
∴ log b ≅ 1.23
Hence, the value of log b to the nearest hundredth is 1.23. The correct option is the second option - 1.23
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Answer:
The answer is 1.23
Step-by-step explanation:
Trust me I took the edge quiz 2022
2x+4 (2x+7)= 3(2x+4)
solve x
[tex]2x + 4(2 x + 7) = 3(2x + 4)[/tex]
to find:solve the ( x ).
solution:[tex]2x + 4(2x + 7) = 3(2x + 4)[/tex]
[tex]2x + 8x + 28 = 6x + 12[/tex]
[tex]10x + 28 = 6x + 12[/tex]
[tex]4x + 28 = 12[/tex]
[tex]4x = - 16[/tex]
[tex]x = - 4[/tex]
2x+4(2x+7)= 3(2x+4)
2x+8x+28=6x + 12
10x+28=6x + 12
4x+28=12
4x= -16
x=-4
Emma enjoys flying kites. her red kite has a maximum altitude of 117.46 meters, and her black kite has a maximum altitude of 362.26 feet. one foot is the same as 0.3048 meters. which kite has a higher maximum altitude, and how many feet higher is it? a. the black kite has a maximum altitude 74.62 feet higher than the red kite. b. the black kite has a maximum altitude 33.66 feet higher than the red kite. c. the red kite has a maximum altitude 23.11 feet higher than the black kite. d. the red kite has a maximum altitude 7.04 feet higher than the black kite.
The red kite has a maximum altitude 23.11 feet higher than the black kite.
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
1 feet = 0.3048 meters, hence:
117.46 m = 117.46 m * 1 ft per 0.3048 meter = 385.37 feet
Difference in height = 385.37 feet - 362.26 feet = 23.11 feet
The red kite has a maximum altitude 23.11 feet higher than the black kite.
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Which of the following fall between 12 and 13?
i don’t understand how to find x to solve.
Answer:
X + 3
Step-by-step explanation:
There is no definite working. The first container is what I call the base because everything is a little above the first container, X. They are basically asking you what is the total of the four jars bigger than X. In other words how many steps more to climb before the top floor while you are on the first step. So then you add the other numbers like 0.5 etc which will give you X +3. Hope it helps.
