Answer:
y^2-y^1/x^2-x^1
Step-by-step explanation:
Eric is preparing for a regional swim meet that is a month away. He swims the same distance and clocks his best time on several different days. He plots the best time (in minutes) he swam each day as his y-variable and the day he swam it as his x-variable. When he plots his times and finds a line of best fit, he gets the equation y=−0.03x+3.45.
If Eric continues to practice, on the 15th day his best time for the day should be _[blank]_ minutes.
Enter the value that correctly fills in the blank, like this: 42
Do not round your answer.
Answer:
On the 15th day his best time for the day is 3 minutes.Step-by-step explanation:
The line that best fits is
[tex]y=-0.03x+3.45[/tex]
Where [tex]x[/tex] is days and [tex]y[/tex] is time in minutes. So, we have [tex]x=15[/tex], replacing this in the equation and solving for [tex]y[/tex], we have
[tex]y=-0.03(15)+3.45=-0.45+3.45=3[/tex]
Therefore, on the 15th day his best time for the day is 3 minutes.
One grain of this sand approximately weighs 7 x 10^-5 grams how many grains of sand are there in 6300kg of sand?
answer in standard form.
Answer:
Step-by-step explanation:
6.3x103 kg sand x 1x103 g/kg x 1 grain sand/7x10-5 g sand = 9x1010 grains of sand = 90 billion grains of sand.
90 billion grains of sand.
(6.3 x 103kg) (1 x 103g/kg x 1 )
DIVIDED by 7 x 10 - 5 g sand
= 9 x 1010 grains of sand
i need help with the following question please
(brainliest will be marked)
Answer:
4x^2+1.5y*2x
Step-by-step explanation:
the area of square equale wide^2
the area of traingle = 1/2 of 3y *hight (2x)
Answer:
4into^2+1.5y*2^
Step-by-step explanation:
please find the area of the shaded region i appreciate your help
Answer:
(4/3) π units² or (b): 33.5 units²
Step-by-step explanation:
The area of a sector of a circle of radius r and central angle Ф is a fraction of the total area of the circle: (Ф/[2π]) * πr².
Here we find the area of the circle to be A = π (8 units)².
60
Multiply that by the fraction ------------- , or 1/6
360
We get: (1/6) (π (8 units)² = (4/3) π units², or approximately 33.5 units²
.
2. What is the experimental probability of flipping a head after five
flips of the coin?
Answer:
It 2/5.
Step-by-step explanation:
Just did the question :)
The experimental probability of flipping a head after five flips of a coin can be calculated by finding the ratio of the number of times a head appears to the total number of flips.
In this case, since there are two possible outcomes - a head or a tail - the total number of flips is five. Let's say, after five flips, a head appears three times. The experimental probability of flipping a head would be calculated as 3 (number of heads) divided by 5 (total number of flips), which equals 0.6.
Therefore, the experimental probability of flipping a head after five flips of the coin is [tex]0.6, or 60[/tex] %. It is important to note that the experimental probability may not accurately represent the theoretical probability, as it is based on a limited number of trials. The theoretical probability of flipping a head is 1/2, which is [tex]0.5 or 50[/tex]%.
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Multiply, then identify the coefficient of x in the product (x - 5)(x + 2). *
Answer:
-3 is the coefficient of x here
Step-by-step explanation:
The first thing to do here is to open the brackets.
(x-5)(x + 2) = x(x + 2)-5(x + 2)
x^2 + 2x -5x -10
x^2 -3x -10
When we say the coefficient of x, we mean the value by which x only is multiplied by in the equation. That would be -3
This must not be confused with the coefficient of x^2 which is entirely different from the coefficient of x
1 point
When factoring the quadratic trinomial below, we consider whether there
is addition or subtraction between terms. Because there is only addition,
the binomial factors will have:
x2 + 9x + 18
addition in both
subtraction in both
addition in one and subtraction in the other
which one is it? help asap
Answer:
I say addition in both since there is + between terms
Hope this helps...
Step-by-step explanation:
Tell me if it's correct
La matemática financiera experimentó grandes avances con la creación de la banca y los negocios creados por los emprendedores. Este tipo de matemática se puede encontrar en las transacciones que realizan los concesionarios de carros, como en el siguiente caso: el costo anual (C de operación) de un automóvil nuevo es C= f + cm; f es el costo fijo (depreciación, seguros, impuestos), c es el costo de operación por kilómetro y m es el número de kilómetros recorridos. El costo total por 15000 Km es de 3000 USD, y el costo por 20000 Km es 3500 USD. Encuentra el costo fijo y el costo por kilómetro.
2. Resuelve aplicando sistemas de ecuaciones 2x2.
Answer:
c = [tex]\frac{1}{10}[/tex]
f= 1500
Step-by-step explanation:
Tenemos la siguiente ecuación
[tex] C = f+cm[/tex]
Tenemos los siguientes valores para m=15000, c = 3000 y para m = 20000, c=3500. Es decir, tenemos las siguientes ecuaciones
[tex] 3000=f+c15000, 3500=f+c20000[/tex]
Si restamos la segunda ecuación de la primera, tenemos que
[tex] 3500-3000 = f-f+(20000c-15000c)[/tex]
Luego
[tex] 500 = 5000c[/tex]
Entonces [tex] c = \frac{500}{5000} = \frac{1}{10}[/tex]
Si tomamos la primera ecuación, tenemos que [tex]3000-\frac{15000}{10} = f[/tex]. Es decir,
[tex] 3000-1500 = f = 1500[/tex]
Esta solución, al plantear 2 ecuaciones y dos incógnitas, plantea un sistema dos por dos.
Saul decides to use the IQR to measure the spread of the data. Saul calculates the IQR of the data set to be 27.
Saul asks Jasmine to check his work. Saul copies the data in numerical order from least to greatest for Jasmine.
25, 30, 50, 50, 50, 50, 56, n, 250
What is the value of n that will make the IQR of the data set equal to 27?
Answer:
78
Step-by-step explanation:
The IQR is quartile 3 - quartile 1. First, we need to find the mean of the dataset, which is 50 -- the fifth number. Then, the median of the dataset on the left of the fifth number is the first quartile, and the median of the dataset on the right is the third. We get Q1 to then be halfway between 30 and 50, or 40, and Q3 to be halfway between 56 and n, so Q3 = (56+n)/2. Since we need Q3-Q1=27, or (56+n)/2-40=27, we have (56+n)/2=67 and 56+n=134, so n = 134-56=78
Find the radius of a circle with a circumference of 49 yards
Answer:
7.8025
Step-by-step explanation:
You get the circumfence formula 2 * pi * r
since you are looking for the radius divide 49/2 then the answer you get divide it by pi and then you have your radius
i hope this helped<33
[I'm using 22/7 as pi in this question, for the sake of convenience, since the value of pi to be used isn't given.]
Circumference = [tex]2\pi r[/tex]
49 = 2 x [tex]\frac{22}{7}[/tex] x r
r = 49 x [tex]\frac{7}{44}[/tex]
r = approx. 7.8 yards
Simplify the expression by combining like terms.
22+5−4+7−8
Answer:
22
Step-by-step explanation:
Answer:
22
Step-by-step explanation:
22 add 5 subtract 4 add 7 and subtract 8
what is 33.4% of 104?
Answer:
33.4% of 104 is equal to 34.736
What is the center of a circle whose equation is x2 + y2 – 12x – 2y + 12 = 0?
(–12, –2)
(–6, –1)
(6, 1)
(12, 2)
Answer:
(6,1)
Step-by-step explanation:
Just look for the terms with x and y in them. Divide their coefficients by two, and multiply by -1. And then put them in an ordered pair.
So in this case, -12x --> 6 and -2y --> 1
Obviously the more orthodox way would be to actually complete the square, but I'm lazy, this way is faster, and since this seems to be multiple choice, as long as you have the correct answer, it shouldn't matter.
The required centre will be at (6,1)
Equation of a circleThe standard equation of circle is expressed as:
x^2+y^2+2gx+2fy+c = 0
where (-g, -f) is the centre of the circle
Given the equation x^2 + y^2 – 12x – 2y + 12 = 0
Compare with the general to have;
2gx = -12x
g = -6
2fy = -2y
y = -1
Since centre is at (-g, -f), hence the required centre will be at (6,1)
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3(x−0.2)=1.8+x find x
Answer:
x=6/5
Step-by-step explanation:
Determine if the question posed is a statistical question (yes) or not (no). How many students passed the math test?
Answer:
How to add a great answer
How to add a great answer
Step-by-step explanation:Determine if the question posed is a statistical question (yes) or not (no). How many students passed the math test?Bună ziua. La pagina 169 aveți o altă piesă de teatru. Vă rog să o citiți și să răspundeți la întrebările 1,2,4,7,8/ pag. 170.
Sper că vă scrieți toate lecțiile în caiet! Sunt copii care încă nu mi-au trimis nicio temă. Vă rog să vă mobilizați! Când ne întâlnim vă verific caietele. Mult spor!
Graph the circle which is centered at (4,4) and has a radius of 3 units.
Answer:
Please refer to attached image for the graph of required circle.
Step-by-step explanation:
The center and radius equation of a circle is :
[tex](x-h)^2 + (y-k)^2 = (r)^2 ...... (1)[/tex]
Where the co-ordinates [tex](x,y)[/tex] from where the circle passes.
[tex](h,k)[/tex] is the co-ordinate of circle's center represented by O.
[tex]r[/tex] is the radius of circle.
Here, we are given that center of circle is at [tex](4,4)[/tex].
So, [tex]h = 4\ and\ k = 4[/tex].
and [tex]r = 3[/tex]
Hence, the equation (1) can be represented as :
[tex]\Rightarrow \left(x-4\right)^{2}+\left(y-4\right)^{2}=3^{2}\\\Rightarrow \left(x-4\right)^{2}+\left(y-4\right)^{2}=9[/tex]
Please refer to the image attached in the answer area for the graph of above equation of circle.
Center of circle is represented by O which is the co-ordinate (4,4).
(7,4) is another point on circle.
The radius of circle is also shown in the graph image attached.
A Ferris wheel rotates 9π/8 radians prior to making a stop. The total height of the Ferris wheel is 246 ft. How far around did the Ferris wheel travel?
Answer:
The ferris wheel travelled 434.717 ft.
Step-by-step explanation:
Assuming that the ferris wheel is a perfect circle, then it's height is the same as the diameter of the circle, therefore it's radius is:
radius = height/2 = 246/2 = 123 ft
The distance travelled by the ferris wheel is the same as the length of the arc created by a angle of (9pi/8). The length of an arc is given by:
length = r*(angle in radians)
length = 123*(9pi/8)
length = 434.717 ft
The ferris wheel travelled 434.717 ft.
factor out the GCF of
Answer:
2
Step-by-step explanation:
Find the total surface area of this triangular prism.
10 cm
6 cm
4 cm
8 cm
Answer:
144
Step-by-step explanation:
8x6=48
48 divided by 2=24
24x2=48
4x10=40
8x4=32
4x6=24
add them all together so 48+40+32+24=144
The triangular prism is a 3-d shape, and the total surface area of the triangular prism is 144 cm²
How to determine the total surface area?The surface area of a triangular prism is:
Area = bh + (b + s₁ + s₂) * l
The parameters in the triangular prism are:
Base length, b = 8cmBase height, h = 6cmOther sides of the base, s₁ = 10cm; s₂ = 6cmPrism height, l = 4cmSo, we have:
Area = 8 * 6 + (8 + 10 + 6) * 4
Evaluate the sum of product
Area = 144
Hence, the total surface area of the triangular prism is 144 cm²
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Diane drove 576 miles in 8 hours. At the same rate, how many miles would she drive in 11 hours?
Answer:
576-8 hours
-11 hours
Cross multiply
=576×11=6336
6336÷8=792
so 792 miles
70% of what number is 595?
Please help
Answer:
850
Step-by-step explanation:
We have, 70% × x = 595
or,
70
100
× x = 595
Multiplying both sides by 100 and dividing both sides by 70,
we have x = 595 ×
100
70
Answer:
Your answer is 416.5
Step-by-step explanation:
You take your first number 595 and multiply it by .7
There ya go hope it helped
List all the factors of 6
Our math team had m students last year, but this year it has already n students! By what percent did the number of students grow?
I'm in need of the full answer, not just the formula! (I'm sorry!)
Answer:
Last year we had M students.
This year we have N students.
Now, the question ask "by what percentage the number of students grow".
So we are considerating a growth, this means that we must think that M as the 100%.
Then we have that N - M is the difference between the students of last year and this year.
this means that this year we have N - M more students that last year, so the percentage of growth is:
((N - M)/M)*100%
Now you need to replace the values for N and M.
You also can notice that if N is smaller than M, you will have a negative percentage, this means that instead of a growth, we have a decrease in the number of students.
Rewrite the equation y=2|x−2|+4 as two linear functions f and g with restricted domains.
Answer:
f(x) = -2x + 8, x < 2
g(x) = 2x, x 》2
Step-by-step explanation:
|x - 2| is:
x - 2, for x 》2
-x + 2, for x < 2
For x < 2,
f(x) = 2(-x + 2) + 4
f(x) = -2x + 8
For x 》2,
g(x) = 2(x - 2) + 4
g(x) = 2x
The two linear functions for the given mode function y = 2|x - 2| + 4 will be y = -2x + 8 and y = 2x.
What is a linear function?A straight line on the coordinate plane is represented by a linear function.
The formula for a linear function is f(x) = ax + b, where a and b are real values.
In another word, a linear function is a function that varies linearly with respect to the changing variable.
As per the given mode function,
y = 2|x - 2| + 4
For x < 2 , |x - 2| = -(x - 2)
y = -2(x - 2) + 4
y = -2x + 4 + 4
y = -2x + 8
For x > 2, |x - 2| = x - 2
y = 2(x - 2) + 4
y = 2x - 4 + 4
y = 2x
Hence "The two linear functions for the given mode function y = 2|x - 2| + 4 will be y = -2x + 8 and y = 2x".
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The Green Goober, a wildly unpopular superhero, mixes 33 3 3 liters of yellow paint with 55 5 5 liters of blue paint to make 88 8 8 liters of special green paint for his costume.
12. Write a function rule in slope-intercept form for the statement: the output is one less than half of the opposite of the input.
Answer: y = (1/2)*x - 1
Step-by-step explanation:
a linear relationship is something like:
y = a*x + b, lets find the values of a and b.
We have that the output (y) must be 1 less than half of the imput (x), then our relation is:
y = (1/2)*x - 1
What is the measurement of x
click here if you good at math
Write three fractions that are equivalent to 1/2
im giving you an easy one :)
Answer:
2/4 3/6 and 4/8
Step-by-step explanation:
A vehicle costs £17754 including vat at 20%. What was the price of the vehicle before vat was added
Answer:
Step-by-step explanation:I don't say you have to mark my ans as brainliest but friend if it has really helped you plz don't forget to thank me...
A can holds 753.6 cubic centimeters of juice. The can has a diameter of 8 centimeters. What is the height of the can? Use 3.14 for 1 and round to
the nearest centimeter
About
cm
Answer: The height is 15 cm.
Step-by-step explanation:
We have to know the can is in a shape like a cylinder so we will use the volume of a cylinder formula to find the height.Which is πr^2*h
We have to know 8 is the diameter so the the radius is 4.
3.14 * 4^2 * h = 753.6
3.14 * 16 * h = 753.6
50.24 * h = 753.6
Divide 753.6 by 50.24 to find the height
The height is 15.