The probability of drawing two red marbles is approximately 16.7%.
Explanation:To find the probability of drawing two red marbles from the bag, we need to find the probability of drawing one red marble and then, given that the first marble was red, drawing another red marble. The probability of drawing a red marble on the first draw is 4/9 (since there are 4 red marbles out of a total of 9 marbles). After the first marble is drawn, there are now 8 marbles left in the bag, including 3 red marbles.
Therefore, the probability of drawing a red marble on the second draw, given that the first marble was red, is 3/8. To find the probability of both events occurring, we multiply the probabilities: (4/9) × (3/8) = 1/6, or approximately 16.7%.
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The probability of drawing 2 red marbles without replacement from a bag containing 4 red, 3 blue, and 2 green marbles is 16.7%.
Explanation:The question is asking for the probability of drawing two red marbles from a bag that contains 4 red marbles, 3 blue marbles, and 2 green marbles, without replacing the first one drawn.
Firstly let's figure out the total number of ways to draw 2 marbles from a bag of 9 marbles. Using combination formula, the total number of possible ways is: 9C2 = 36.
Now, how many ways can you draw 2 red marbles from 4? That will be: 4C2 = 6 ways.
So the probability of drawing 2 red multiplies, without replacement, is therefore 6 / 36 = 0.167 or 16.7% when rounded to the nearest tenth of a percent.
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A 107-ft-tall building casts a shadow of 90 ft. To the nearest whole degree,
What is the angle of elevation to the sun?
The angle of elevation to the sun is mathematically given as
[tex]\theta=49.93[/tex]
What is the angle of elevation to the sun?Question Parameters:
A 107-ft-tall building casts a shadow of 90 ft.
Generally, the equation for the Trigonometry is mathematically given as
[tex]tan\theta=\frac{opp}{adj}[/tex]
Therefore
[tex]\theta=tan^{-1}\frac{107}{90}[/tex]
[tex]\theta=49.93[/tex]
In conclusion, the angle of elevation to the sun is
[tex]\theta=49.93[/tex]
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Using the slope concept, it is found that the angle of elevation to the sun is of 40º.
What is a slope?The slope is given by the vertical change divided by the horizontal change, and it's also the tangent of the angle of depression.
In this problem, the vertical change is of 107 ft, while the horizontal change is of 90 ft, hence:
[tex]\tan{\alpha} = \frac{90}{107}[/tex]
[tex]\alpha = \tan^{-1}{\left(\frac{90}{107}\right)}[/tex]
[tex]\alpha = 40^\circ[/tex]
The angle of elevation to the sun is of 40º.
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A polynomial that has a degree of 0 is called ___.
Answer:
constant or constant polynomial
Some call is the zero polynomial
Step-by-step explanation:
Let x be raised to the 0 power
x^0 = 1
This is constant
3x^0 = 3*1 = 3
This is still constant
Answer:
Constant
Step-by-step explanation:
Degree 0 means the highest power of the variable is 0, which also means there's only one term
(Because the powers have to non-negative integers, and 0 is the smallest)
Ax⁰ is the form of a degree-0 polynomial
x⁰ = 1
Ax⁰ = A
Which is a constant
Rewrite the expression in the form 4^n4 n 4, start superscript, n, end superscript. (4^{6})(4^{-8})=(4 6 )(4 −8 )=(, 4, start superscript, 6, end superscript, ), (, 4, start superscript, minus, 8, end superscript, ), equals
To multiply powers with the same base, like (4^6)(4^-8), add the exponents to get 4^(6-8) = 4^-2. Converting the negative exponents gives us 1/4^2 or 1/16 as the simplified expression.
Explanation:To rewrite the expression in the form 4n4n, we use the rule that when multiplying two numbers with the same base, we add their exponents. So, (46)(4-8) = 4(6 + (-8)) = 4-2 = 1/42 = 1/16.
When multiplying powers with the same base, you simply add the exponents. In the expression (4^{6})(4^{-8}), we add the exponents 6 and -8. The rules of exponents tell us that 4^{6} \times 4^{-8} = 4^{6-8} = 4^{-2}. Negative exponents indicate the reciprocal of the base raised to the positive of that exponent. Therefore, 4^{-2} = \frac{1}{4^{2}} = \frac{1}{16}. This simplified expression demonstrates how to work with exponents and manage negative exponents effectively.
Write the ratio of baby girls to baby boys with a hospital full of 1,000 babies, 430
being boys.
Answer:
57:43
Step-by-step explanation:
1000 babies - 430 baby boys = 570 baby girls
570 girls to 430 boys
570:430
simplify
57:43
Answer:
570/430 respectively
Step-by-step explanation:
1000-430(number of boys)=570(number of kids left so they must be girls)
570/430 is simplified by taking off each 0 and making it 57/43
For a bookease, Tim wants 6 shelves
ench 284 inches long What total length
of shelving does he need?
Answer:
1704 inches
Step-by-step explanation:
Take the length of each shelf and multiply by the number of shelves
6* 284 =1704 inches
Answer:
1704 in
Step-by-step explanation:
Find the value of x in the figure
Answer:
I am 99% sure it's [tex]x = 100[/tex]°, here's why (down)
Step-by-step explanation:
The total is 180°. When adding 57° + 23° = 80°. To get [tex]x[/tex], you have to subtract 80° from 180°. The difference is 100°, which is the answer of this problem.
You get tired of the sand and head up to the amusment park you can purchase 20 ride tickets for $14 or 30 ride tickets for 22.50 which is the better deal
Answer:
20 ride tickets for $14 is a better deal
Step-by-step explanation:
Considering the two offers
The first deal which is 20 ride tickets for $14 is more advantageous because it offers $1.5 less compare to the second offer as 30 rides would require a sum of $21 for the first deal whereas 30 rides cost $22.50 for the second deal
The temperature outside changed from 92°F to 43°F over a period of seven days. If the temperature changed by the same amount each day, what was the daily temperature change?
A.
49°F
B.
-49°F
C.
7°F
D.
-7°F
Reset Submit
Answer: D
Step-by-step explanation: the temperature changes from 92° to 43°
so 92 - 43 = 49 meaning that the temperature changed 49 degrees in total and if it changed the same amount in the seven days you have to divide 49 by 7 = 7
C is wrong since it did change by 7 but the option to decrease is there and the temperature didn't increase or get warmer but instead decreased or became cooler so it is D
A circular playground is 60 feet wide and has a 3-foot wide path surrounding the playground. The area of the playground is about
Answer:
i think its 180
Step-by-step explanation:
u have to multiply 60 and 3 and u will get 180
The area of a circular playground with a diameter of 60 feet is calculated using the formula Area = π × radius². With a radius of 30 feet, the area is approximately 2826 square feet. Therefore, the area of the playground is about 2826 square feet.
To find the area of a circular playground, we first need to know its radius. Since the diameter of the playground is given as 60 feet, the radius (which is half the diameter) is:
Radius = Diameter / 2 = 60 feet / 2 = 30 feetThe formula for the area of a circle is:
Area = π × radius²Using π as approximately 3.14, we can calculate the area:
Area = 3.14 × 302 = 3.14 × 900 = 2826 square feetTherefore, the area of the playground is about 2826 square feet.
product of (2x+3)(2x+4)
Answer:
4x² + 14x + 12
Step-by-step explanation:
There are several different methods you can use to multiply binomials, but I will walk through the FOIL method.
First - Multiply the first terms of each binomial
2x · 2x
Outer - Multiply the outside terms of each binomial (the first term of the first binomial and the second term of the second binomial)
2x · 4
Inner - Multiply the inside terms of each binomial (the second term of the first binomial and the first term of the second binomial)
3 · 2x
Last - Multiply the last term of each binomial
3 · 4
Then you will add each product together to get the expression 4x² + 8x + 6x + 12. This is not our answer as we have to combine like terms to simplify.
After simplifying, 4x² + 14x + 12 will be the answer.
The area of the base of this rectangular prism is 6 in.². The height is 12 inches. What is the volume of the rectangular prism?
Answer:
72 in^3
Step-by-step explanation:
The volume is found by V=Bh meaning volume = area of the base * height
V = 6 * 12
V = 72
Which equations have the same value of x as Three-fifths (30 x minus 15) = 72? Select three options. 18 x minus 15 = 72 50 x minus 25 = 72 18 x minus 9 = 72 3 (6 x minus 3) = 72 x = 4.5
Answer:
C.
D.
E.
Step-by-step explanation:
The two options that yield the same value for 'x' as the equation 'Three-fifths (30 x minus 15) = 72' are '3 (6 x minus 3) = 72' and 'x = 4.5'. The confusion can be eliminated by simply breaking down and solving the initial equation for 'x', and then substituting the calculated value for 'x' into the optional equations.
Explanation:To discover which options yield the same value as 'Three-fifths (30 x minus 15) = 72', we first need to solve the given equation for 'x'. This can be done as follows:
Multiply both sides by 5/3 to get rid of the 3/5 in front of the bracket: (30 x minus 15) = 120,Add 15 to both sides to isolate 30x on the left side: 30x = 135,Finally, divide by 30: x = 4.5.Substitute x = 4.5 into each option:
For '18 x minus 15 = 72', 18(4.5) - 15 isn’t equal to 72, so this is not correct.For '50 x minus 25 = 72', 50(4.5) - 25 isn’t equal to 72, so this isn’t correct as well.For '18 x minus 9 = 72', 18(4.5) - 9 isn’t equal to 72 either, hence, it is also incorrect.For '3 (6 x minus 3) = 72', 3(6*4.5 - 3) equals to 72, so this is correct.For 'x = 4.5', this is obviously correct as it matches our calculated value.Therefore, '3 (6 x minus 3) = 72' and 'x = 4.5' provide the same value for x as the initial equation 'Three-fifths (30 x minus 15) = 72'.
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Easy Question, Easy Points
Topic: Volume
Answer: V = 0.6 m.
Step-by-step explanation:
Volume = l x w x h
in this case if you input the cube's values its volume = 1 m and 1 - 0.4 = 0.6m
Volume is a measure of how much space something takes up and is usually measured in cubic centimetres ({cm}^3cm
3
) or cubic metres ({m}^3m
3
). Density is a measure of how tightly the mass of an object is packed into the space it takes up, so we calculate this by dividing its mass by its volume.
{density } = \dfrac{{mass}}{{volume}}density =
volume
mass
As a result, the units we used to measure density are compound units for more information, see here . The unit of choice will depend on what units are used to measure the values you’re given. If, in a particular question, mass is measured in kilograms and volume is measured cubic metres, then the density we calculate would be measured “kilograms per cubic metre”, which is denoted either by {kgm}^{-3}kgm
−3
or kg/m}^3kg/m
3
. If the starting units were different, then the resulting unit of density would be different. Let’s see an example.
Example: An object has a mass of 570g and a volume of 2,280 cm}^3cm
3
. Calculate its density.
As stated, density is equal to the mass divided by the volume, so this will be our calculation, but what will the unit of our answer be? In the question, the mass is given in grams and the volume in cubic centimetres, so the density should be in grams per cubic metre, which is denoted either like \{gm}^{-3}gm
−3
or {g/m}^3g/m
3
.
{Density } = {570}{2,280} = 0.25{ g/m}^3Density =
2,280
570
=0.25 g/m
3
Answer:
v= 0.6
Step-by-step explanation:
Deanna has a balance of $324.55 in her checking account. She uses her debit card to pay$102.00 for a concert ticket. What is the balance in her checking account now? *
Answer:
$222.55
Step-by-step explanation:
Answer:
$222.55
Step-by-step explanation:
$324.55-$102.00
The scatter plot below shows the average rent (in dollars per month) for a 1-bedroom apartment in New York City each year between 2000 and 2013. A line was fit to the data to model the relationship. Which of these linear equations best describes the given model?
Answer:
y=40x+800 and 1600
Step-by-step explanation:
Answer:
C and 1600
Step-by-step explanation:
A regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm. A regular pentagon has an apothem with a length of 3 centimeters and a perimeter of 21.8 centimeters. What is the area of the pentagon, rounded to the nearest tenth? 13.8 cm2 17.3 cm2 32.7 cm2 69.0 cm2
Answer:
C. [tex]32.7cm^{2}[/tex]
Step-by-step explanation:
Area = (Perimeter x apothem) / 2
Area = 21.8 x 3 / 2
Area = 65.4 / 2
Area = [tex]32.7cm^{2}[/tex]
C. The area of the regular pentagon, rounded to the nearest tenth is 32.7 cm².
Area of the regular pentagonThe area of the regular pentagon is calculated as follows;
Area = aP/2
where;
a is apothem of the pentagonP is perimeter of the pentagonArea = (3 x 21.8)/2
Area = 32.7 cm²
Thus, the area of the regular pentagon, rounded to the nearest tenth is 32.7 cm².
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A cylinder has surface area of 256 π square millimeters and a height of 8 millimeters. The
diameter is _millimeters.
Answer:
I believe the answer is 32.
The value of diameter is,
⇒ d = 16 mm
What is Multiplication?
To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
We have to given that;
A cylinder has surface area of 256 π square millimeters and a height of 8 millimeters.
Since, We know that;
Surface area of cylinder is,
SA = 2πrh + 2πr²
Here, We have;
SA = 256π
h = 8 mm
Hence, We get;
256π = 2π × r × 8 + 2π × r²
128 = 8r + r²
r² + 8r - 128 = 0
r² + 16r - 8r - 128 = 0
r (r + 16) - 8 (r + 16) = 0
(r - 8) (r + 16) = 0
r = 8 mm
Hence, The value of diameter is,
d = 2 x 8
d = 16 mm
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There are 22 fourth-grade students and 26 fifth-grade students who became cheerleaders. Each cheerleading group will have 8 members. Which equation can be used to find out how many groups can be made?
The number of groups of cheerleaders are 6 groups.
Given that, the number of students in grade 4 is 22 and the number of students in grade 5 is 26.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Here, each cheerleading group will have 8 members.
Let the number of groups be x.
Now, 22+26=48
So, x=48/8
= 6 groups
Therefore, the number of groups of cheerleaders are 6 groups.
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Final answer:
To find the number of cheerleading groups that can be made with 22 fourth-graders and 26 fifth-graders, we add the total number of students and divide by the group size (8). The equation is k = (22 + 26) / 8, which simplifies to k = 6, meaning 6 groups can be formed.
Explanation:
The question is asking how to calculate the total number of cheerleading groups that can be formed from a given number of fourth-grade and fifth-grade students. In this case, there are 22 fourth-grade students and 26 fifth-grade students, making a total of 48 students. Given that each group should have 8 members, the formula to find the number of groups is the total number of students divided by the number of members per group.
The equation to find the number of cheerleading groups (k) is:
k = Total number of students / Number of members per group
Thus, the equation is:
k = (22 + 26) / 8
When simplified, it gives:
k = 48 / 8
Which equals:
k = 6
Therefore, 6 cheerleading groups can be made.
If you are good at determining sequences please help! (Show work)
Answer:
-62.5008
Step-by-step explanation:
the pattern here is dividing by -5, so just continue dividing by -5 starting on -3 and continuing 4 more times. record each number and then add them together using a calculator. you will get -62.5008
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Use the table of values to calculate the linear correlation coefficient r.
X Y
4 -5
53 -1
86 13
162 16
The linear correlation coefficient r is **1.2237445080439002**.
To calculate the linear correlation coefficient r, we can use the following formula:
[tex]r = (\sum(x - \bar x)(y - \bar y)) / \sqrt(\sum(x - \bar x)^2 \sum(y - \bar y)^2)[/tex]
where:
* [tex]\sum[/tex] is the sum of the values
* [tex]\bar x[/tex] is the mean of x
* [tex]\bar y[/tex] is the mean of y
First, we need to calculate the mean of x and y:
[tex]\bar x[/tex] = (4 + 53 + 86 + 162) / 4 = 71.25
[tex]\bar y[/tex] = (-5 - 1 + 13 + 16) / 4 = 5.75
Next, we need to calculate the sum of the squared deviations from the mean for x and y:
[tex]\sum(x - \bar x)^2 = (47.25^2 + 17.25^2 + 14.25^2 + 90.75^2) = 10148.5[/tex]
[tex]\sum(y - \bar y)^2 = (11.25^2 + 6.75^2 + 7.25^2 + 10.25^2) = 317.5[/tex]
Now, we can calculate the linear correlation coefficient r:
[tex]r = (\sum(x - \bar x)(y - \bar y)) / \sqrt(\sum(x - \bar x)^2 \sum(y - \bar y)^2)[/tex]
r = (47.25 * 11.25 + 17.25 * 6.75 + 14.25 * 7.25 + 90.75 * 10.25) / √(10148.5 * 317.5)
r = 1.2237445080439002
Therefore, the linear correlation coefficient r is **1.2237445080439002**.
This value indicates a strong positive correlation between x and y.
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If the diameter of a circle is 19.3, what is the circumference?
Answer:
60.6
Step-by-step explanation:
The formula for finding the circumference of a circle is C = 2πr
C is circumference, π is pi (we'll just us 3.14 here), and r is radius.
The radius is found by dividing the diameter in half.
19.3/2=9.65
So the equation should look like this:
C = 2(3.14)(9.65)
C = 60.602
C = 60.6
Samuel earned 18.90 working last weekend. He worked for 2 and 1 fourth hours. Which equation and solution represents e, the amount Samuel earns each houre at his job
Answer:
The equation that represents the amount Samuel earns per hour is "e = (total earned)/(total time worked)", on last weekend he earned 8.4 per hour.
Step-by-step explanation:
Since Samuel worked a total of 2 and 1/4 hours it means that he worked:
hours worked = 2 + 1/4
hours worked = 8/4 + 1/4
hours worked = 9/4
He earned a total of 18.9 working that many hours. If we divide the total amount he earned by the number of worked hours we can find the total he earns per hour.
e = (total earned)/(total time worked)
e = 18.9/(9/4)
e = 18.9*(4/9)
e = 75.6/9
e = 8.4 per hour
The equation that represents the amount Samuel earns per hour is "e = (total earned)/(total time worked)", on last weekend he earned 8.4 per hour.
Answer:
2.25 =18.90e
samuel earns $8.40 per hour
Step-by-step explanation:
What is the value of s3 when: (infinite geometric series)
The value of S₃ is 65/9.
what is a geometric series?A geometric series is the sum of an infinite number of terms that have a constant ratio between successive terms. S= a + ar + ar² + ar³+ . . .
a=start term r =common ratio
Given here, the nth term is 5(1/3)ⁿ⁻¹
therefore the sum of the first 3 terms of the geometric series is
S₃ = 5(1/3⁰) +5(1/3)¹+5(1/3)²
= 1+ 5/3 + 5/9
= 65/9
Hence the final answer is 65/9
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What is the median of 89,99,80,5,90,0,100,95
Answer:
89.5
Step-by-step explanation:
What is the median of 89,99,80,5,90,0,100,95
We should order this from least the greatest.
0, 5, 80, 89, 90, 95, 99, 100
The median is between 89 and 90
median = (89 + 90)/2 = 89.5
Which is the measure of
A)93
B.113
C.138
D.180
Answer:
Depends on the angel needed, I'll provide all answers
Step-by-step explanation:
Angel A is 93, because a straight line has an angel total of 180, so in order to find angel A you would just need to subtract
180-87 = 93
Angel B is 87, because angels opposite each other have the same value.
The Angel without a character would be 93 for the same reason :3
Johnny ate 200 jars of his fathers sugar if johnny got a warning from his papa (While T-posing and floating to him) every 10 jars, how many warnings did he get? (Sorreh I'm not a troll I'm just extremely dumb.)
Answer:
I assume the answer would be that f(x) = 6(x) increases over the interval x = 3 to x = 4
Step-by-step explanation:6 x 3 is 18 and 6 x 4 is 24, so over the interval x = 3 to x = 4 f(x) would increase.
20
Step-by-step explanation:
200 divided by 10 equals 20
Solve for x.
x/7 + 9 = 15
Look at the attached picture ⤴
hope it will help u....:)
The value of x in the equation (x/7) + 9 = 15 is 42.
To solve for x in the equation (x/7) + 9 = 15, you can follow these steps:
Subtract 9 from both sides of the equation:
(x/7) + 9 - 9 = 15 - 9
(x/7) = 6
Multiply both sides of the equation by 7 to isolate x:
7 × (x/7) = 6 ×7
x = 42
Therefore, the solution to the equation is x = 42.
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The volume of this cone is 932.58 cubic meters. What is the height of this cone?
The height of the cone is approximately 9 meters.
The formula for the volume (V) of a cone is given by:
[tex]\[ V = \frac{1}{3} \pi r^2 h \][/tex]
where r is the radius of the base and h is the height.
Given that the volume V is 932.58 cubic meters, we can rearrange the formula to solve for h:
[tex]\[ h = \frac{3V}{\pi r^2} \][/tex]
Since the problem doesn't provide the radius r, we cannot calculate the exact height. However, if the cone is assumed to have a radius of 1 meter (as it's not provided), you can substitute the values into the formula:
[tex]\[ h = \frac{3 \times 932.58}{3.14 \times 1^2} \][/tex]
Simplifying this gives:
[tex]\[ h \approx 9 \, \text{meters} \][/tex]
Therefore, under the assumption of a radius of 1 meter, the height of the cone is approximately 9 meters.
find the equivalent expression: 12a+6b
1)6(6z+6b)
2)6(2a+b)
3)2(6a+4b)
4)2(10b+4b)
Answer:
2
Step-by-step explanation:
12a+6b
factor out 6
6(2a+b)
Plz answer for 20 pts
Answer to Problem 1: 5√3
Answer to Problem 2: 21√5
Answer:
[tex] 6) \: \: \sqrt{3} + 4 \sqrt{3} \: = \: 5\sqrt{3}[/tex]
[tex] 7) \: \: 3\sqrt{5}+ 6\sqrt{45} = 3\sqrt{5}+6\sqrt{9} \! \cdot \! \sqrt{5} [/tex]
[tex] = 3\sqrt{5} + 6\! \cdot \! 3 \! \cdot \! \sqrt{5}=3 \sqrt{5} + 18 \sqrt{5} = 21\sqrt{5} [/tex]