The rubber track for a toy digger goes around four circular wheels of diameter 8 cm, as shown. (b) Calculate the length of the rubber track that goes around the four wheels. Give your answer correct to one decimal place.
Answer:
73.1 cm
Step-by-step explanation:
In the drawing, the rubber track is in black and the wheels are in light gray.
As we can see in the figure, the rubber track will have a length of two halfs of a circunference of radius 8 cm plus six diameters of 8 cm. So the total length is:
Length of rubber track = pi * 8 + 6 * 8 = 25.13 + 48 = 73.133 cm
Rounding to one decimal place, we have that the length is 73.1 cm
This question is incomplete because it lacks the diagram of the 4 circular wheels.
Find attached to this answer the appropriate diagram
Answer:
100.5cm
Step-by-step explanation:
The formula to be used in this calculation is the circumference of a circle.
The circumference of a circle can be defined as the actual length of a circle when it is stretch out(opened up) or the distance around a circle.
The formula for the circumference of a circle is given as 2πr where r = radius of the circle
Or πD where D = Diameter of the circle
In the question, we are given the diameter of the circle = 8cm
So we use the Formula
= πD
The length of the rubber track around one wheel is
= π × 8cm = 25.132741229cm
From the attached diagram, we can see we have 4 wheels.
The length of the rubber track that goes around the four wheels is calculated as
4 × 25.132741229cm = 100.53096491cm.
Approximately to one decimal place = 100.5cm
Therefore, the length of the rubber track that goes around the four wheels to one decimal place is 100.5cm
David paid $1.25 per drink and purchased 6 drinks. Write an equation for the price, c, of all the drinks.
Hello, I need some assistance with this homework question, please? This is for my precalculus homework. Q14
y = x ( x-6) ^2
--------------
x-6
The domain is the values that x can take
The denominator cannot be zero
x-6 cannot equal zero
x-6 =0
x=6
X can be all values but 6
x | x cannot equal 6
To find the x intercepts, set y =0
This means the numerator is equal to zero
0 = x ( x-6)^2
Using the zero product property
x=0 (x-6)^2 =0
x =0 x-6 =0
x=0 x=6
but 6 is not in the domain so x cannot equal 6
The only x intercept is 0
A hot air balloon went from an elevation of 4,545 feet to an elevation of 3,414 feet in 26 minutes. What was its rate of descent?
Answer:
You would do this 4545 - 3414 = to get the answer which is 1131 feet
Step-by-step explanation:
Hope it helps
Jerry has 4 1/2 cup of strawberry he use 3/4 cup of a strawberry to make a breakfast smoothie he wants to use the remaining strawberry to make pancakes if he takes 1 1/4 cup of strawberries to make one pancake how many pancake can he make.
Jerry will able to make 3 pancakes if he has 4 1/2 cup of strawberry from which he make use of 3/4 strawberry to make breakfast smoothie and he need 1 1/4 cup of strawberries to make one pancake.
Total strawberry Jerry has = 4 1/2 cup = 9/2 cups
Strawberry used to make smoothies = 3/4 cup
Remaining strawberries
= 9/2 - 3/4
= (18-3)/4 = 15/4
To make one pancake, Jerry needs = 1 1/4 cup = 5/4 cup
Number of pancakes Jerry can make = 15/4/5/4 = 3 pancakes
Hence, the number of pancakes, Jerry can make is 3
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You are given the following information about a population:
⢠There are two alleles: C and c.
⢠C codes for green hair and c codes for white hair.
⢠C is dominant over c.
⢠The frequency of the c allele is 0.3.
⢠The population is comprised of 100 individuals.
Assuming the population is in Hardy-Weinberg equilibrium, how many individuals have green hair?
A. 9% of the population will have green hair.
B. 91% of the population will have green hair.
C. 51% of the population will have green hair.
D. 49% of the population will have green hair.
Assuming the population is in Hardy-Weinberg equilibrium, the individuals have green hair are equal to 91% .
From the data present in problem,
Hardy and Weinberg proved mathematically that in a population all dominant and recessive alleles include all alleles for a given gene. Mathematically, denoted as p + q = 1.0
Where, p = frequency of dominant alleles (C)
q = frequency of recessive alleles (c) = 0.3
Number of population individua's = 100
Hardy and Weinberg described all the possible genotypes for a gene with two alleles. The binomial expansion representing this is,
p² + 2pq + q² = 1.0
Where, p² = proportion of homozygous dominant individuals (Green)
• q² = proportion of homozygous recessive individuals (White)
2pq = proportion of heterozygotes (Green)
Since, p+ q = 1.0
=>p = 1 - q = 1 - 0.3 = 0.7
=>p = 0.7
The genotypic frequencies are as follows:
CC (p²) = (0.7) = 0.49
Cc (2pq) = 2x(0.3)(0.7) = 0.42
cc (9²) = (0.3)² = 0.09
p² + 2pq + q² = (0.49) + (0.42)+(0.09)= 1.0
The expected number for each genotype are as follows: CC (p²) = (0.49×100) = 49
Cc (2pq) = (0.42×100)= 42
cc(q²) = (0.09×100) = 9
The number of individuals have green hair is as follows: (p²)+(2pq) = 49+42= 91
Thus, required individuals percentage is 91%.
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Find the missing lengths. Give your answers in both simplest radical form and as approximations correct to two decimal places.
Create drawings as needed.
Given: ΔABC with m∠A = m∠B = 45° and BC = 6
Find: AC and AB
The missing lengths are AC = 3√2 ≈ 4.23 and AB = 3√2 ≈ 4.23.
To find the missing lengths of ΔABC, we can use the properties of a 45-45-90 triangle. A 45-45-90 triangle is a special type of right triangle in which the two legs are congruent and the angles are 45°, 45°, and 90°. The ratio of the sides in a 45-45-90 triangle is 1:1:√2, where the hypotenuse is √2 times the length of each leg.
Since we are given that BC = 6 and ∠A and ∠B are both 45°, we can conclude that ΔABC is a 45-45-90 triangle. Therefore, the lengths of AC and AB are both equal to the length of BC, which is 6.
AC = 6
AB = 6
To find the lengths in simplest radical form, we can multiply the lengths of AC and AB by √2/√2 to get:
AC = 6 * √2/√2 = 6√2/2 = 3√2
AB = 6 * √2/√2 = 6√2/2 = 3√2
To find the approximations correct to two decimal places, we can use a calculator to find the decimal values of 3√2:
AC ≈ 3 * 1.41 = 4.23
AB ≈ 3 * 1.41 = 4.23
Therefore, the missing lengths are AC = 3√2 ≈ 4.23 and AB = 3√2 ≈ 4.23.
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7 less than the product of a number n and 1/5 is no more than 95 .
ANSWER:
STEP-BY-STEP EXPLANATION:
We must interpret each sentence mathematically, just like this:
Less then would be a subtract
Product would be a multiplication
No more than would be equal or less than
Answer:
.2n-7≤95
.2n≤102
n≤510
hope this helps
Let f be the function given by f(x)=2x3+3x2+1. What is the absolute maximum value of f on the closed interval [â3,1] ?
The absolute maximum value of f(x)=2x³ +3x² +1 on the closed interval [-3, 1] is 6, which occurs at x=1.
To find the absolute maximum value of the function f(x) on the closed interval [-3, 1], we need to evaluate the function at the endpoints of the interval and at any critical points in the interior of the interval.
First, we evaluate the function at the endpoints of the interval
f(-3) = 2(-3)³ + 3(-3)² + 1 = -17
f(1) = 2(1)³ + 3(1)² + 1 = 6
Next, we find the critical points of the function f(x) by taking its derivative and setting it equal to zero
f'(x) = 6x² + 6x
6x(x+1) = 0
x = 0 or x = -1
Now we evaluate the function at these critical points
f(0) = 1
f(-1) = 2(-1)³ + 3(-1)² + 1 = 2
Therefore, the absolute maximum value of f(x) on the closed interval [-3, 1] is 6, which occurs at x=1.
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The given question is incomplete, the complete question is:
Let f be the function given by f(x)=2x³ +3x² +1. What is the absolute maximum value of f on the closed interval [-3,1] ?
Whoever answers first gets brainliest
Come up with a story for graph c
Answer:
Mike ran half way to school walked to school and ran the rest
Step-by-step explanation:
If f(x + 1) = x² - 1 and g(x + 1) = x² + 1, find f(x) + g(x).
If \(f(x+1) = x^2 - 1\), then
\(f(x) = f((x - 1) + 1) = (x - 1)^2 - 1\)
Similarly,
\(g(x + 1) = x^2 + 1 \implies g(x) = g((x-1) + 1) = (x-1)^2 + 1\).
Then
\(f(x) + g(x) = \bigg((x-1)^2 - 1\bigg) + \bigg((x-1)^2 + 1\bigg) = \boxed{2(x-1)^2}\)
Solve the inequality and write the solution in interval notation:
k/-12 ≤ 15.
A group of 450 middle school students were randomly selected and asked about their preferred television genre. A circle graph was created from the data collected.
a circle graph titled preferred television genre, with five sections labeled drama 14 percent, sports, documentaries 24 percent, reality 20 percent, and sci-fi 20 percent
How many middle school students prefer the Sports television genre?
99
79
78
22
Answer:
99
Step-by-step explanation:
cuz its correct
What is the slope of the graph of the given line?
Answer:
slop = 2/3
Step-by-step explanation:
slope = rise/run
Start at the lower left point (-2, -1).
We need to go to the upper right point (4, 3) by going only vertically (rise) and horizontally (run).
First we go up 4. The rise is 4.
Then we go right 6. The run is 6.
slope = m = rise/run = 4/6 = 2/3
slope = 2/3
Identify the x and y intercepts of the graph of the function below. Type your intercepts as a point (x,y). If an intercept does not exist type "none". If more than one intercept exists you can type either intercept.f(x)= -3|x-2|-1 x intercept = Answery intercept = Answer
Given function is
\(f(x)=-3|x-2|-1\)Putting x=0, we have,
\(\begin{gathered} f(0)=-3|-2|-1 \\ =-3(2)-1 \\ =-7 \end{gathered}\)Hence, the y intercept is (0,-7).
To find the x intercept, let us solve teh equation
\(f(x)=0\)It gives
\(\begin{gathered} -3|x-2|=1 \\ |x-2|=-\frac{1}{3} \end{gathered}\)But this equation has no solution.
Hence, the x intercept is NONE
Using the equation 4x-7=13 , choose all the steps that are used to solve the equation.
Answer:
see below
Step-by-step explanation:
4x-7=13
Add 7 to each side
4x-7+7 = 13+7
4x=20
Divide each side by 4
4x/4 = 20/4
x = 5
Answer:
x=5
Step-by-step explanation:
\(\hookrightarrow 4x-7=13 \\\\\hookrightarrow 4x=13+7\\\\\hookrightarrow 4x=20\\\\\hookrightarrow x=20/4\\\\\hookrightarrow x=5\)
hiii please help if you can
Answer:
Correct choices: 2 and 4
Step-by-step explanation:
These two line segments have a positive slope.
Answer:
Choice B and D!
Step-by-step explanation:
Interval 2 goes up after going at a constant rate and interval 4 goes up from decreasing
What is the Unit price of 20 tickets for $14.00 ?
Answer: 1 ticket = 70 cents.
Step-by-step explanation:
If you get 20 tickets for 14.00, then we have to divide 14 by 20.
14 ÷ 20 = 0.7, or 70 cents. Because of this, each ticket will cost 70 cents.
30. three fair six-sided dice are rolled. what is the probability that the values shown on two of the dice sum to the value shown on the remaining die?
Total number of cases possible when 3 Dice roll= 6^3=216
Now we have to find the number of cases when values shown on two of the dice sum to the value shown on the remaining, probability is 0.28
Now we need to count the instances where the values on two dice add up to the value on the other die, which is one. If a die shows 6, the remaining two dice must either show (5,1) or (4,2), or (3,3)
Total number of scenarios that could occur in this situation: 3!+3!+3!/2!=15
2. If a die shows 5, the other two dice must either display (4,1) or (3,2)
The total cases that could occur in this scenario are 3!+3! =12.
3. If a die shows 4, the other two dice must either display (3,1) or (2,2)
Total number of scenarios that could occur in this situation: 3!+3!/2!=9
4. If a die shows 3, the other two dice must also show 3. (2,1)
The total number of cases possible in this scenario= is 3!/2! =3
Total cases possible= 15+12+9+6+3=45
Probability= 45/216=5/24= 0.208
probability is 0.208
correct option is (D).
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The question was incomplete. Check below the complete question.
Three fair six-sided dice are rolled. What is the probability that the values shown on two of the dice sum to the value shown on the remaining die?
(A) 1/6
(B) 13/72
(C) 7/36
(D) 5/24
(E) 2/9
3x+6=9
Solve for x.
Still need more characters.
Bloop.
3x + 6 - 6 = 9 - 6
3x = 3
x = 3/3
x = 1
check
3 * 1 + 6 = 3 + 6 = 9
Answer:
x=1
Step-by-step explanation:
3(1)+6=9
3+6=9
9=9
hope this helps
pls mark brainliest
need help with 4 ASAP
what is the answer to 284 times 45 to the power of 3
Hey there!
284 * 45^3
= 284 * 45 * 45 * 45
= 284 * 2,025 * 45
= 284 * 91,125
= 25,879,500
Therefore, your answer is:
25,879,500
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
solve 2/x-1=16/x^2+3x-4
The solutions to the equation \(2/x - 1 = 16/(x^2 + 3x - 4) are x = 2 and x = (-1 ± √17) / 2.\)
To solve the equation \(2/x - 1 = 16/(x^2 + 3x - 4),\) we'll simplify and rearrange the equation to isolate the variable x. Here's the step-by-step solution:
1. Start with the given equation: 2/x - 1 = 16/(x^2 + 3x - 4)
2. Multiply both sides of the equation by x(x^2 + 3x - 4) to eliminate the denominators:
\(2(x^2 + 3x - 4) - x(x^2 + 3x - 4) = 16x\)
3. Simplify the equation:
\(2x^2 + 6x - 8 - x^3 - 3x^2 + 4x - 16x = 16x\)
4. Combine like terms:
-x^3 - x^2 + 14x - 8 = 16x
5. Move all terms to one side of the equation:
\(-x^3 - x^2 - 2x - 8 = 0\)
6. Rearrange the equation in descending order:
-x^3 - x^2 - 2x + 8 = 0
7. Try to find a factor of the equation. By trial and error, we find that x = 2 is a root of the equation.
8. Divide the equation by (x - 2):
\(-(x - 2)(x^2 + x - 4) = 0\)
9. Apply the zero product property:
x - 2 = 0 or x^2 + x - 4 = 0
10. Solve each equation separately:
x = 2
11. Solve the quadratic equation:
For x^2 + x - 4 = 0, you can use the quadratic formula or factoring to solve it. The quadratic formula gives:
\(x = (-1 ± √(1^2 - 4(1)(-4))) / (2(1)) x = (-1 ± √(1 + 16)) / 2 x = (-1 ± √17) / 2\)
Therefore, the solutions to the equation\(2/x - 1 = 16/(x^2 + 3x - 4) are x = 2 and x = (-1 ± √17) / 2.\)
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Farmer John owns a
rectangular field 2 3/10 miles
wide and 3 1/2 miles long. How
much fencing does he need to
go around the field?
According to the perimeter of rectangle, the amount of area that the fencing does he need to go around the field is 11 3/5 miles
The general formula to calculate the perimeter of the rectangle is written as,
=> P = 2(l + b)
where l refers the length of the rectangle and b refers the width of the rectangle.
While we looking into the given question, we have identified that the following values are given in the question,
=> Length of field = 2 3/10 miles
=> Width of field = 3 1/2 miles
Now, we have to convert the mixed fraction into normal fraction, then we get,
=> Length of field = 23/10 miles
=> Width of field = 7/2 miles
Then the Perimeter is calculated as,
=> 2 (23/10 + 7/2)
=> 2 ([23 + 35)/10)
=> 2 x (58/10)
=> 2 x 5.8
=> 11.6 or 11 3/5 miles
Therefore, the length of fencing used to enclose the rectangular field is 11 3/5 miles
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Ethan claims that |7-3| - 4. Which statement about Ethan’s claim is true?Group of answer choices
Ethan is incorrect because the absolute value bars are grouping symbols so first you must subtract 7 - 3 = 4, and |4| = -4.
Ethan is correct because the absolute value bars are grouping symbols so first you must subtract. 7 - 3 = 4, and |4| =4.
Possible Answer
Ethan is correct because |7| = 7 and |-3| = 3 so 7 + 3 = 10. Plot 7 on a number line, and move right 3 to get 10 on the line.
Answer:
B
Step-by-step explanation:
Please help me due soon
[Find all the missing side and angles of this triangle]
Step-by-step explanation:
We have AB = 7, Angle ABC = 70°
and Angle ACB = 90°.
Angle BAC = 180° - 70° - 90° = 20°
(Sum of angles in a triangle = 180°)
Using Trignometry,
AC = 7sin70° = 6.58.
BC = 7cos70° = 2.39.
please help me on this! will give u brainliest tyy.
Answer:
A. The balloon is at its initial height
B. The boxer is 0 pounds from her starter weight
C. The company's size is smaller
Step-by-step explanation:
For A, -30+30 is equal to 0 so its gonna be the same height it was before.
For B, Gaining 7 pounds and losing 7 pounds means you are neither bitter or smaller. (-7+7=0)
For C, Losing 15 employees and gaining none means that there are less than there were previous meaning the company is now smaller.
Hope this helps.
X+2/12=3/8
Help me please
Answer:
your mom is gay laugh at that
ok
Step-by-step explanation: SAWP
a forecast is defined as a(n) . a. quantitative method used when historical data on the variable of interest are either unavailable or not applicable b. prediction of future values of a time series c. outcome of a random experiment
A forecast is defined as a(n) prediction of future values of a time series which is option B.
Using past data as inputs, forecasting is a process that produces accurate predictions of the future course of trends. Companies use forecasting to decide how to spend their budgets and make plans for forthcoming costs. Often, this is based on the anticipated demand for the provided goods and services.
Forecasting is a tool used by investors to predict if certain events, such sales projections, would raise or lower the price of a company's stock. For businesses that require a long-term view on operations, forecasting also offers an essential benchmark.
To predict how trends, like as the GDP or unemployment, will change in the upcoming quarter or year, equity analysts utilise forecasting. Lastly, statisticians may examine the probable effects of a change in business operations via forecasting. Data may be gathered, for example, on how altering company hours affects consumer happiness or how changing particular work conditions affects staff productivity.
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