Answer:
Answer 2 1/7 +3/7(3x-5)= -4
2 1/7 + 9/7x-15/7= -4
0+ 9/7x = -4
x= -28/9
Step-by-step explanation:
a college runner set a school record of 3 minutes and 59.37 seconds in the mile run. assuming that the distance was measured accurately to five significant figures, what was the runner's average speed in kilometers per hour? assume 1 km
The runner's average speed in kilometers per hour is 24.257 km.
The total distance covered by the runner is 1 mile. The relation between kilometers and miles is given as 1 km = 0.62 mi. Converting 1 mile to km by using the given relation, we get-
Distance = 1 mile
= 1 mile × [1 km/0.62 mile]
= 1.6129 km
The time taken to complete a 1-mile run is 3 minutes and 59.37 seconds. The relation between hours and minutes is given below.
1 hour = 60 minutes ……(1)
Converting 3 minutes to hours using equation (1), we get-
3 minutes = 3 minutes × [1 hour/60 minutes]
= 0.05 hours
The relation between hours and seconds is given below.
1 hour = 3600 second …….(2)
Converting 59.37 seconds to hours using equation (2), we get-
59.37 seconds = 59.37 seconds × [1 hour/3600 seconds]
= 0.016492 hours
Total time to cover 1 mile = (0.05 + 0.016491) hours = 0.066492 hours
The average speed of the runner is calculated by the following relation-
Average Speed = Distance (km)/time (hours)
= 1.6129 km/0.066492 hours
= 24.257 km/hour
Therefore, the average speed in kilometers per hour is 24.257km.
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WILL GIVE BRAINLIEST X THANKS !
REALLY URGENT
Write each subtraction equation as an addition equation.
a - 9 = 6
p - 20 = -30
z - (-12) = 15
x - (-7 = -10
The subtraction equations written as addition equations are
a + (-9) = 6
p + (-20) = -30
z + 12 = 15
x + 7 = -10
Writing an EquationFrom the question, we are to write each of the given subtraction equation as an addition equation
a - 9 = 6This equation written as an addition equation is
a + (-9) = 6
p - 20 = -30This equation written as an addition equation is
p + (-20) = -30
z - (-12) = 15This equation written as an addition equation is
z + 12 = 15
x - (-7) = - 10This equation written as an addition equation is
x + 7 = -10
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Apply the distributive property to create an equivalent expression.
4(3+1/4c- 1/2d)=
Answer:
4(3+1/4c-1/2d)
12+c-2d
Let me know if this helps!
A deposit of $10,000 is made in an account that receives 10% interest, compounded monthly. How much money will the account contain after five years?
Answer:
45,000
Step-by-step explanation:
Answer:
G
Step-by-step explanation:
G
Find the number of terms in this polynomial.
-8f^2
Answer:
3 terms
Step-by-step explanation:
!!!!!! I need help asap
Answer:
3.2
Step-by-step explanation:
Answer:
pythagorean theorem !!!!!!
Step-by-step explanation:
0.8²+1.6²=3.2²
0.64+2.56=10.24
THAT means the distance is
\( \sqrt{10.24} \)
=3.2miles
85 m
A garden is in the shape of a rectangle 85 m by 50 m.
Flowers are grown in 32% of the garden.
The rest of the garden is grass.
Work out the area of the garden that is grass.
50 m
Answer:
so you multiply 85 by 50 to find the area of the garden then you get 4250, I prefer the long way to do the math so I divide 4250 by 100 and get 42.5 I then multiply that by 32 and get 1360. You would then subtract 1360 from 4250 and get 2890. so 2890 is the area of grass!
can someone pls help me !!
Answer:
I am not sure
Step-by-step explanation:
I believe if you take and break down what you paid and then it will be easier to figure out the interest
\(f (x) = 2x^{3} - x^{2} - 22x - 24\) synthetic division
Possible zeros:
Zeros:
Linear Factors:
The possible zeros of the polynomial are -2, -3/2 and 4.
What are the zeros of the function?The zeros of the function is calculated as follows;
The zeros of the function are the values of x that will make the function equal to zero.
let x = -2
f(x) = 2x³ - x² - 22x - 24
f(-2) = 2(-2)³ - (-2)² - 22(-2) - 24
f(-2) = -16 - 4 + 44 - 24
f(-2) = 0
So, x + 2 is a factor of the polynomial, and other zeros of the polynomial is calculated as;
2x² - 5x - 12
----------------------------------
x + 2 √ 2x³ - x² - 22x - 24
- (2x³ + 4x²)
------------------------------------
-5x² - 22x -24
- (-5x² - 10x)
-------------------------------------
-12x - 24
- (-12x - 24)
-------------------------
0
2x² - 5x - 12 , so will factorize this quotient as follows;
= 2x² - 8x + 3x - 12
= 2x(x - 4) + 3(x - 4)
= (2x + 3)(x - 4)
2x + 3 = 0
or
x - 4 = 0
x = -3/2 or 4
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1+2+3+4+5+6+7+8+9+10+2+3+4+5+6
How far is Melissa from the point where Jake is standing?
Answer:
95.4 yards maybe
Step-by-step explanation:
just used pythagoras theorem
A researcher made the following graph showing the number of hours per day that people spend on the computer versus the number of pounds that they overweight. predict the number of pounds overweight someone would be if they spent 8 hours per day using a computer
PLS I NEED HELP!!
Answer:
Step-by-step explanation:
Unfortunately, without more information, it is not possible to accurately predict the number of pounds someone would be overweight if they spent 8 hours per day using a computer. The graph provided does not provide enough data to make an accurate prediction. It is possible, however, to make an educated guess based on the graph. Looking at the graph, it appears that someone who spends 8 hours per day on the computer would likely be somewhere between 20 and 40 pounds overweight.
The probability a household in a community uses gas for cooking is 0.18. If a shopper from the community is from a household that uses gas for cooking, there is a 0.7 probability the person shops at Prime Foods. If a shopper is from a household that does not use gas for cooking, there is a 0.35 probability the person shops at Prime Foods.
If a person from the community does not shop at Prime Foods, what is the probability gas is not used for cooking at that household?
a.
0.08
b.
0.35
c.
0.533
d.
0.793
e.
0.908
The probability that gas is not used for cooking at a household can be determined by considering the probabilities of shopping at Prime Foods and using gas for cooking.
Let's denote the event of using gas for cooking as G and the event of shopping at Prime Foods as P. We are given that the probability of G is 0.18, and the conditional probabilities are as follows: P(G) = 0.7 and P(~G) = 0.35.
To find the probability of gas not being used for cooking, we need to calculate P(~G|~P), which represents the probability of not using gas for cooking given that a person does not shop at Prime Foods.
Using conditional probability, we have P(~G|~P) = P(~G∩~P) / P(~P). Here, P(~G∩~P) represents the probability of both not using gas for cooking and not shopping at Prime Foods, and P(~P) represents the probability of not shopping at Prime Foods.
Since P(~G∩~P) + P(G∩~P) = P(~P), we can rewrite the equation as P(~G|~P) = [P(~G∩~P) + P(G∩~P)] / P(~P).
We are given P(G∩~P) = P(G) * P(~P|G) = 0.18 * (1 - 0.7) = 0.054.
Therefore, P(~G|~P) = [P(~G∩~P) + P(G∩~P)] / P(~P) = (0.054 + 0) / (1 - 0.35) = 0.054 / 0.65 ≈ 0.083.
So, the probability that gas is not used for cooking at the household, given that a person does not shop at Prime Foods, is approximately 0.083, which is option (a).
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The expression 16t^2 represents the distance in feet an object falls after t seconds . the object is dropped from a height of 2716 feet
The expression 16t^2 represents distance an object falls in feet after t seconds, assuming no other forces are acting on it.
The height from which object is dropped can be represented by another variable or constant. The expression 16t^2 represents the distance an object falls in feet after t seconds, assuming free fall under the influence of gravity. The value 16 comes from the acceleration due to gravity, which is approximately 32 feet per second squared. Since the object is falling, the equation represents a downward motion.
In this case, the object is dropped from a height of 2716 feet. To find the time it takes for the object to reach the ground, we can set the expression equal to the height and solve for t: 16t^2 = 2716. Dividing both sides of the equation by 16, we get: t^2 = 169.75, Taking the square root of both sides, we find: t ≈ 13.04
Therefore, the object takes approximately 13.04 seconds to fall from a height of 2716 feet.
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Nina is making pink candles to use as decorations on Valentine's Day. She melts red and white wax together and pours them into a heart-shaped mould. Then, she melts double the amount of red wax and double the amount of white wax together and pours them into a flower-shaped mould. Which candle is a lighter shade of pink?
Answer:
answer is neither, they are both the same shade.
Step-by-step explanation:
if she doubled the colors exactly then it wouldn't be any different. Also IXL told me I'm right :)
Answer:
Neither.
Step-by-step explanation:
Originally, she used the same amount. For the second one, she used double the same amount, but it was still the amount of red wax as of white wax. So, they both had the same amount, which means it is neither.
given:bac , dec , c is the midpoint of ae , what are the statements and reasons
Note that the proof that ΔABC ≅ ΔEDC is given as follows:
∠BAC ≅ ∠DEC (Given)C is the midpoint of AE (Given)∠ACB ≅ ∠ ECD - Vertical Angles TheoremΔABC ≅ ΔEDC - ASA Congruence Throrem.What is the ASA Congruence Theorem?According to the ASA rule, if any two angles and sides included between the angles of one triangle are comparable to the corresponding two angles and sides included between the angles of the second triangle, the two triangles are said to be congruent.
Thus, given the above statements, it is clear that ΔABC ≅ ΔEDC
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Full Question:
Angle BAC is congruent to Angle DEC: Given
C is the midpoint of AE: Given
Prove triangle ABC is congruent to triangle EDC
What are the statements and reasons for this proof?
the function below is to be fit to a data set using linear regression. the correct linearization of the data needed to calculate the model coefficients a and b is:
The function below is not provided in the question, therefore, I cannot provide a specific linearization method to fit the data to a linear regression model.
However, in general, the correct linearization method for a function to be fit to a data set using linear regression would depend on the functional form of the equation.
For example, if the function is exponential, taking the logarithm of the data may result in a linear relationship that can be fit using linear regression.
The specific linearization method to fit a function to a linear regression model would depend on the functional form of the equation. For an exponential function, taking the logarithm of the data may result in a linear relationship that can be fit using linear regression. However, since the function in question is not provided, I cannot provide a specific linearization method.
The correct linearization method for a function to be fit to a linear regression model depends on the functional form of the equation and cannot be determined without knowledge of the specific function.
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which measurement is closest to the volume of the container height of 14 centimerers 8 centimers diameter
The closest measurement to the volume of the container would be 738 cubic centimeters.
Assuming that the container has a cylindrical shape, the volume can be calculated using the formula for the volume of a cylinder:
V = πr^2h
where V is the volume, r is the radius, and h is the height of the cylinder.
Since the diameter of the container is given as 8 centimeters, the radius is half of that, which is 4 centimeters.
Therefore, the volume of the container is:
V = π(4 cm)^2(14 cm) = 704π/3 ≈ 738.18 cubic centimeters
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now use the binomial probability formular, calculate the probability of observint 4 heads in 10 coin flips. (1pt) is the estimated probability from exercise 1 close to the true proability? (1pt)
By using Binomial distribution of probability, it can be calculated that
Probability of getting 4 heads in 10 coin flips = \(\frac{105}{512}\)
What is Binomial distribution of probability?
Binomial distribution of probability is a discrete probability distribution where the probability mass function is given by
P(X = x) = \({n \choose x}p^xq^{n - x}\)
Where p is the probability of success and q is the probability of failure.
Here, Binomial distribution of probability is used
n = 10
Probability of getting a head = \(\frac{1}{2}\)
Probability of getting a tail = \(\frac{1}{2}\)
Probability of getting 4 heads in 10 coin flips = \({10 \choose 4}(\frac{1}{2})^4(\frac{1}{2})^{10 - 4}\)
= \(\frac{210}{1024}\)
= \(\frac{105}{512}\)
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How do you divide fast without a calculator?
The simplest way to perform a division is long division and synthetic division.
What is division?
Division in mathematics is the process of dividing an amount into equal parts. For instance, we may split a group of 20 people into four groups of 5, five groups of 4, and so on.
There are two methods to perform division:
Long division: The mathematical procedure for splitting big numbers into more manageable groups or sections is known as long division. A difficulty can be solved by breaking it down into manageable parts. Dividends, divisors, quotients, and remainders all exist in long divisions.
Synthetic division: In algebra, synthetic division is a technique for manually dividing polynomials according to Euclid, requiring less writing and calculation than long division. Although the approach can be applied to division by any polynomial, it is often taught for division by linear monic polynomials.
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Evaluate the expression 6x + 21y when Y = 4 x=3
Answer:
102
Step-by-step explanation:
You have to substitute x and y. Since x = 3 and y = 4, you would write the equation as 6(3) + 21(4). Multiply that, and you get 18 + 84. Add that together, and you get the answer 102.
Answer: 102
Step-by-step explanation: 6x + 2y
6(3) + 21(4)
18 + 84
102
basically you just plug in 4 where it says y in the equation and plug in 3 where it says x in the equation and solve :))
PLEASE HELP I WILL MARK YOU BRAINLIEST
Last year, the girl's basketball team had 20 ninth-grade students and 10 sixth-grade students. what was the ratio of sixth-grade students to total students on the team
10:30
please mark me brainliest
For the following right triangle, find the side-length x. Round your answer to the nearest hundredth.
The length of the second leg (the vaue of x in the triangle) is approximately 10.25.
Calculating the vaue of x in the triangleFrom the question, we have the following parameters that can be used in our computation:
Hypotenuse = 13
One leg = 8
Second leg = x
We can use the Pythagorean theorem to solve for the second leg:
a^2 + b^2 = c^2
where a and b are the legs of the right triangle, and c is the hypotenuse.
Plugging in the values we know:
8^2 + x^2 = 13^2
64 + x^2 = 169
Subtracting 64 from both sides:
x^2 = 105
Taking the square root of both sides:
x = √105
x = 10.25
Therefore, the length of the second leg is approximately 10.25.
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f(x) = x^2 + 3x
f(-2)=
Find the equation of the linear function represented by the table below in slope-intercept form.
Answer:
y=-2x+3
Step-by-step explanation:
Use the slope formula
\(m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)
According to the table, x=1 and y=1. There is another point x=2 and y=-1.
We can say that \(x_{1}=1\) and \(y_{1} =1\). We can also say that \(x_{2}=2\) and \(y_{2}=-1\). Plugging this into the equation we get:
\(m=\frac{-1-1}{2-1}=-2\).
This means that the slope of your equation is -1/2
Point intercept form is y=mx+b
So plugging the slope in we have \(y=2x+b\)
We can plug in one of the values from the value table for x and y, but to keep things simple, I’m going to just use x=1, and y=1, the first values on the table. Plugging these into the equation we get:
\(1=-2(1)+b\\ 1=-2 +b\\b=1+2 \\b=3\)
So our equation is \(y=-2x+3\)
Need help with this math question
Answer:
B. 46
Step-by-step explanation:
10% is equal to 1/10, so we have x/10 = 20. We multiply by 10 on both sides, leaving us with x = 200. 23% of 200 is equal to 46.
HURRY PLEASE 50 PONITS EACH WILL GIVE BRAINLIST!! NO LINKS PLEASE.
A biking track has a length of 5016 feet ft. How long is this in miles mi? First fill in the blank on the left side of the equation using one of the ratios. Then write your answer on the right side of the equation.
Answer:
0.95 Miles (mi) that's the answer
7) What does a multiplier of \( 1.2 \) mean?
A multiplier of 1.2 means the value is multiplied or increased by a factor of 1.2.
A multiplier is a term used to represent a factor by which a value is multiplied or increased. It is a numeric value that indicates the extent of the increase or expansion of a given quantity. Multiplication by a multiplier results in scaling or changing the magnitude of the original value.
A multiplier of 1.2 indicates that a value will be increased by 20% or multiplied by a factor of 1.2. This means that when the multiplier is applied to the original value, the resulting value will be 1.2 times the original.
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Apples cost $0.75 per pound and bananas cost $1.05 per pound.
A baker bought a total of 12 pounds of apples and bananas for $10.20.
The system of equations {a+b=120.75a+1.05b=10.20 models this situation, where a is the number of pounds of apples, and b is the number of pounds of bananas.
How many pounds of each did the baker buy?
Answer:
The baker bought 8 pounds of apples and 4 pounds of bananas.
Step-by-step explanation:
a+b=12.
0.75a+1.05b=10.20
First, multiply 2 my 10.
75a+105b=1020.
Then multiply 1 by 75.
75a+75b=900.
Then subtract.
75a+105b=1020
75a+75b=900.
75a-75a+105b-75b=1020-900
30b=120
b=4
Substitute into (1)
a+4=12
a=8.
Hope this helps :)
Suppose X is the number of defective items and is a binomial random variable with n = 6 and p = 0.3. Find the probability that at most 2 items are defective Select one: O a. 0.5797 O b. 0.6266 O c. 0.2556 O d. 0.7442
The probability that at most 2 items are defective is approximately 0.7443. The closest option is d. 0.7442.
To find the probability that at most 2 items are defective, we need to calculate the cumulative probability for X ≤ 2. We can use the cumulative distribution function (CDF) of the binomial distribution.
The CDF of a binomial distribution with parameters n and p is given by:
CDF(k) = P(X ≤ k) = Σ(i=0 to k) (nCi) × \(p^{i}\)× \((1-p)^{(n-i)}\)
where nCi represents the binomial coefficient.
In this case, n = 6 and p = 0.3. We want to find P(X ≤ 2), so we need to calculate:
P(X ≤ 2) = P(X = 0) + P(X = 1) + P(X = 2)
Let's calculate each term:
P(X = 0) = (6C0) ×(0.3⁰)× (1-0.3)⁶⁻⁰ = 1 ×1 ×0.7⁶ = 0.117649
P(X = 1) = (6C1)× (0.3¹)× (1-0.3)⁶⁻¹ = 6 ×0.3 ×0.7⁵ = 0.302526
P(X = 2) = (6C2)× (0.3²)× (1-0.3)⁶⁻² = 15 × 0.09 × 0.7⁴ = 0.324135
Now, let's add up these probabilities:
P(X ≤ 2) = 0.117649 + 0.302526 + 0.324135 = 0.74431
Therefore, the probability that at most 2 items are defective is approximately 0.7443.
The closest option is d. 0.7442.
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