someone please answer please!
Svetlana Masterkova of Russia set a record when she ran 1 mile in 4 minutes, 12.56 seconds. What was her time in miles per hour?
Answer:
14.04 miles/hours
Step-by-step explanation:
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The sum of 2 numbers is 150.One number is 12 more than the other number.What is the smaller number?
Answer: Why did you type on my answer "Thanks for the points".
Step-by-step explanation:
11,880 yd = How many Miles?
Answer:
0.00675
Step-by-step explanation:
0.00675 rounded miles
Pls Help.!!
Find the areas of the following: A square with a width and height equal to 5 feet.
Answer:
A = 25 ft²
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASGeometry
A square has all equal sides and anglesArea of a Square: A = x²Step-by-step explanation:
Step 1: Define
x = 5 ft
Step 2: Find Area
Substitute in x: A = (5 ft)²Evaluate: A = 25 ft²Type the correct answer in the box. If necessary, use / for the fraction bar and simplify the fraction. cos(75°)cos(15°) =
Answer:
1/4
Step-by-step explanation:
If you type cos(75)cos(15) into a scientific calculator, the answer comes out as 1/4.
The value of the trigonometric expression cos(75)cos(15) is 1/4 after applying the trigonometric identity.
What is trigonometry?Trigonometry is a branch of mathematics that deals with the relationship between sides and angles of a right-angle triangle.
We have a trigonometric expression:
= cos(75°)cos(15°)
As we know the trigonometric identity:
cos(a)cos(b) = (1/2)[cos(a + b) + cos(a - b)]
a = 75
b = 15
Plug the above values in the trigonometric identity:
cos(75)cos(15) = (1/2)[cos(75 + 15) + cos(75 - 15)]
cos(75)cos(15) = (1/2)[cos(90) + cos(60)]
The trigonometric ratio is the ratio of the pair of a right-angled triangle.
The value of cos90 = 0
cos60 = 1/2
cos(75)cos(15) = (1/2)[0 + 1/2]
cos(75)cos(15) = 1/4
Thus, the value of the trigonometric expression cos(75)cos(15) is 1/4 after applying the trigonometric identity.
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Craig and Jeff are comparing their plans for downloading songs. Craig pays a monthly fee of $5.50 and then $0.25 per song he downloads. Jeff
pays $0.80 for each song he downloads. What number of downloaded songs result in Craig and Jeff having the same monthly cost?
Answer:
10 songs
Step-by-step explanation:
Let number of songs Craig and Jeff downloaded be s
5.50 + 0.25s = 0.80s
5.50 = 0.55s
s = 10
hence explain x²-8x+20 is always positive
Answer:
It is always positive because the discriminant is negative and therefore has no roots. This can also be interperted as the equation will always be above the x-axis on the parabola and therefore always be positive.
Step-by-step explanation:
The value of the quadratic expression (x - 4)² + 4 will be always positive.
What is the equation of the parabola?Let the point (h, k) be the vertex of the parabola and a be the leading coefficient. Then the equation of the parabola will be given as,
y = a(x - h)² + k
The quadratic expression is given below.
⇒ x² - 8x + 20
Convert the expression into a vertex form, then we have
⇒ x² - 8x + 16 + 4
⇒ (x² - 2 · x · 4 + 4²) + 4
⇒ (x - 4)² + 4
Thus, the value of the expression (x - 4)² + 4 will be always positive.
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Reggie is asked to graph this system of equations:
3x + 4y = 8
y-5x = 2
How many times will the lines intersect?
A. There is no way to tell without graphing the lines first.
B. The lines will intersect infinitely many times, because they are
identical.
C. The lines will not intersect, because this system has no solutions.
D. The lines will intersect once, because this system has one
solution.
We will solve by graphing this system.
According to the graph bellow, the answer is D. The lines will intersect once, because this system has one solution.
Answer: D. The lines will intersect once, because this system has one solution
Step by Step Explination:
Yes it is correct because I took the test and got 100%
The last 2 questions & did I do it right pls help me:(
Answer:
Step-by-step explanation:
a. 50x+200
b. 200
c. 50
d. y intercept - the cost to buy the phone
e. slope represents number of months that you have the phone plan
how do you find an equation for a line with a slope of 2/3 passing through (1,-4)
Answer:
The standard general equation for a straight line is:
y = mx + C. You said the slope of line is 2/3. m is always the slope in this context. So with the numerical value slope we have the line
Y = 2/3 X + C. You also said the line passes through the point (1, -4) that is the X value is 1 and the y value is -4. Substitute these value into the linear equation to find C, as follows
-4 = 2/3 + c. and so C = - 4 - 2/3 = -14/3 and so the equation of line is :
y = 2x/3 + 14/3 or if you like 3y = 2x + 14
It is important to remember that the convention of the bracketted numbers e.g. (1,-4) or ( 1, -4, z), say is that the first number in the brackets indicates the X value, the second the y value and the third, the z value in the case of 3 D coordinates.
Fred had $10.00 allowance to spend on books at the school book fair. He wanted to buy at least one comic book and one sports book. If the comic book he wanted was $4.67, and the sports book he wanted was $4.28, how much would he have left after buying both books?
A.
$5.33
B.
$1.05
C.
$5.72
D.
$8.95
Answer:
C
Step-by-step explanation:
4.67+4.28+= 8.95 -10=1.05
2 of 8
© What single decimal multiplier would you use to decrease by 2% followed by a
3% decrease?
What is the equation for This graph ?
Complete the synthetic division problem below.
-1/ 2 8 6
What is the quotient in polynomial form?
O A. X-6
O B. X+6
C. 2x + 6
D. 2x-6
Answer:
c bc of -1/ 2 8 6 of you divide and then u multiple
The quotient of the synthetic division problem -1 | 2 8 6 in polynomial form is 2x + 6.
How to determine the quotient?The synthetic division problem is given;
-1 | 2 8 6
Remove the number before the | sign
2 8 6
Remove the middle number;
2 6
Introduce a variable starting from an exponent of 0 (let the variable be x);
2x¹ 6x⁰
Evaluate the exponents;
2x 6
2x + 6
Hence, the quotient of -1 | 2 8 6 in polynomial form is 2x + 6.
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Nancy is knitting a scarf. It takes her 0.2 of an hour to knit each inch of the scarf. She wants the length of the scarf to be 60 inches.
Answer:
2 hours
Step-by-step explanation:
60 *20
Answer:
The answer would be 30 minutes.
Step-by-step explanation:
so sometimes i put a question with lots of points and a lot of people come up just for the points and not to help me just to let these people know i report all the people who do it so what you do is not worth it 'cause when the person report you lose the points you earned so I don't see any point in it and why .
do not do with others what you do not like that when is do with you
Answer:
If you have any questions I can try to help :)
Step-by-step explanation:
I'm sorry people keep doing that to you
and thank you for the points <3
Noah’s recipe for one batch of sparkling orange juice uses 4 liters of orange juice and 5 liters of soda water.
I need help please
HELP!!!! Due in 1 hour.
Answer
these nut in you'er mouth
Step-by-step explanation:
30+ points need it asap! :) pls show work.
Write a polynomial function f of least degree with the following zeros: 3, 4 + i
Answer:
[tex]f(x)=(x-3)(x^2-8x+17)[/tex]
Or:
[tex]f(x)=x^3-11x^2+41x-51[/tex]
Step-by-step explanation:
To find our factors, we can work backwards.
We know that 3 is a zero. This means that:
[tex]x=3[/tex]
Subtract 3 from both sides:
[tex](x-3)=0[/tex]
So, (x-3) is one of our factors.
We also know that (4+i) is a zero. So:
[tex]x=4+i[/tex]
First, let’s isolate the imaginary. So, subtract 4 from both sides:
[tex](x-4)=i[/tex]
Now, let’s square both sides:
[tex](x-4)^2=(i)^2[/tex]
Expand the left. Evaluate the right:
[tex](x^2-8x+16)=-1[/tex]
Add 1 to both sides. So, our factor is:
[tex](x^2-8x+17)=0[/tex]
Hence, our polynomial function is:
[tex]f(x)=(x-3)(x^2-8x+17)[/tex]
This is also the least degree since we did the most minimum we can do to solve backwards.
Further Notes:
If we want to convert this to standard form, we can distribute:
[tex]f(x)=(x^3-8x^2+17x)+(-3x^2+24x-51)[/tex]
Combining like terms will yield:
[tex]f(x)=x^3-11x^2+41x-51[/tex]
Help me and I will give Ten CuPcAkEs
For YoUr TuMmY to DeVoUr
( But be Fast Before I eat them ALL)
Answer: 51
Step-by-step explanation: plug 24 into where X is. 1.5 times 24 is 36 then add the 15 and u get 51.
What transformation moves Frame 1 to Frame 2?
A) Translation
B) Rotation
C) Reflection
D) Dilation
Please please help! Its due soon!! Ill mark brainliest!!
I need side b, using tangent!! Thank you!!
Answer:
tan 68 degrees = b/60
60 * tan 68 degrees = b
b = 148.5 in tenths, 149 as a whole number, and 148.51 in hundredths
Step-by-step explanation:
Hope it helps!
Answer:
tan 68 degrees = b/60
60 * tan 68 degrees = b
b = 148.5 in tenths, 149 as a whole number, and 148.51 in hundredths
. Step-by-step explanation:
Hope it helps!
1
Robert climbed 775 steps in 12 minutes.
2
How many steps did he average per minute?
Answer:
64 and 1/3 steps
Step-by-step explanation:
Answer:
775 / 12 = 64.5833...
Step-by-step explanation:
Which graph represents a linear function?
Answer:
If it is not a straight it is not considered a linear function. The image does not show all of the graphs, but it is not a linear function.
Hi, i'm trying to find the area of the attached rectangle, i'm trying to figure out how it works by putting it into pieces, i can't quite figure it out, any help would be nice!
Answer:
208[tex]cm^{2}[/tex]
Step-by-step explanation:
Area of a rectangle= base x height
Find the area for each one of the rectangles and add up
2(4x8)+2(6x8)+2(4x6)
Which table of values represents a linear function ?
Answer:
Step-by-step explanation:
C
the equation would be y=2x+4
The solution is Option C.
The linear equation is given as y = 2x + 4
What is an Equation of a line?The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept
And y - y₁ = m ( x - x₁ )
y = y-coordinate of second point
y₁ = y-coordinate of point one
m = slope
x = x-coordinate of second point
x₁ = x-coordinate of point one
The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given data ,
Let the equation be represented as A
Now , the value of A is
Let the x values be = { -4 , -2 , 0 , 2 }
Let the y values be = { -4 , 0 , 4 , 8 }
The slope of the line is m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Substituting the values in the equation , we get
Slope m = ( 0 - ( -4 ) / ( -2 - ( - 4 ) )
On simplifying the equation , we get
Slope m = 4/2 = 2
Now , the equation of line is
y - y₁ = m ( x - x₁ )
Substituting the values in the equation , we get
y - 0 = 2 ( x - ( -2 ) )
On simplifying the equation , we get
y = 2x + 4
Hence , the linear equation is y = 2x + 4
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PLEASE HELP I ONLY HAVE 17 MORE MINUTES!!!!
Answer:
A. 6
Step-by-step explanation:
6/1 = 6
What's the answer of 7/10×4
Answer:
2.8 in decimal form
Step-by-step explanation:
Answer:
Im pretty sure its 2.8
Step-by-step explanation:
What is the sum of the first five prime numbers?
18
26
28
39