Given :
Everyday Isabel swims 10-20 laps in a 50 meter pool.
The amount of time she spends swimming is represented by the function f(x) = 3x .
To Find :
The speed of Isabel.
Solution :
Distance travelled in x laps is, D = 50x .
It is given that time taken is, t = 3x .
So, speed of Isabel is given as :
[tex]Speed=\dfrac{Distance}{Time}\\\\Speed = \dfrac{50x}{3x}\\\\Speed = \dfrac{50}{3}=16.67 \ m/s[/tex]
Hence, this is the required solution.
number of titles need to cover a floor of a room 300cm by 200cm if the area of one of the title 2000sq.cm is _____
please show working clearly.
Answer:
30 tiles
Step-by-step explanation:
area = 300 x 200 = 60000sqcm
60000/ 2000= 30
What is the equation in standard form of the line that passes through the points (−2, 33) and (5, −16)? A. 7x − y = 51 A. 7x − y = 51 B. 7x + y = −47 B. 7x + y = −47 C. 7x + y = −14 C. 7x + y = −14 D. 7x + y = 19 D. 7x + y = 19
Answer:
you have to find the unknown before each question. slove the bracket first and then move on
What is the area of this polygon on a coordinate plane?
20 square units
9 square units
3 square units
14 square units
Answer:
i need a picture or something to solve this so...
Step-by-step explanation:
what is the measure of arc qr?
26
52
104
128
Answer:
104°
Step-by-step explanation:
The principle to apply here is that angle subtended at the center of a circle is twice the angle at circumference.
Angle subtended at arc = 52°
Angle at the center = 2 x 52° = 104°
Answer:
104°
Step-by-step explanation:
A map has a scale of 1 cm: 5 km. Determine how far apart two cities are if they are 8 cm apart on the map.
Answer:
i believe the answer is 40km.
Answer:
We are given that 1 cm on the map represents 5 km on earth's surface.
Then, if the cities are 8 cm apart on the map, they will be 8*5 = 40 km apart on Earth.
Step-by-step explanation:
90 girls and boys have planned for an educational tour. They are in a ratio of 3 girls 6 to boys. How many girls are there?
Answer:
30 girls 60 boys
Step-by-step explanation:
[Functions] I just need yes's and no's.......a lot of them, functions just really don't click with me and I don't understand why, they make me mad ;-;
Answer:
uh-
Step-by-step explanation:
Answer:
1.yes 2.no.3.yes.4no.5.yes
Step-by-step explanation:
Which shows the steps for performing long division in the correct order?
Answer:
D. divide, multiply, subtract, repeat
Step-by-step explanation:
10 divided by 4 2/3
uh pls help
please help me on this
Answer:
b 20
Step-by-step explanation:
16+24/8-6
16+24=40
40/8-6
8-6=2
40/2
40/2=20
THIS IS DUE IN 4 MINS PLZ HELP NOW
Answer:
Sorry
Step-by-step explanation:
This is hard i tried but dont understand
Answer:
1) y= -2×+5/5
2) y=-6×+7/4
What’s the answer to 0.462 / 0.2
Answer: 2.31
Step-by-step explanation: 0.462 divided by 0.2 is 2.31. I knew it was going to be over 2 because 0.2 times 2 is 0.4.
Answer:
2.31
Step-by-step explanation:
0.2 goes into 0. 2 times. First part of answer: 2
0.2 goes into 0.06 3 times. second of answer: 3
0.2 goes into 0.002 one time. Third part of answer: 1
Answer: 0.231.
Now we need to move the decimal 4 places to the left and we get 2.31
HOPE THIS HELPS YOU!! :)
Plz mark brainliest if you want to! :)
A motorcycle travels 62 miles in two
hours. At this rate, how many miles will
the motorcycle travel in 3 hours?
Answer:
93
Step-by-step explanation:
62/2=31
31x3=93
Answer:
93 miles
Step-by-step explanation:
62 miles/2 hours= 31 mph
31+62= 93 miles
please help me with this question
Answer:
y = 75x +1
is the correct answer hope it is helpful to you ☺️
The linear equation for this situation is,
⇒ y = 75x
And, There are 75 apple pick in one hour.
What is linear expression?
A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power.
Given that;
The graph shows how many apples Erin can pick if she ,maintain a constant rate.
Now,
Let two points on the graph are (0, 0) and (1, 75).
So, Slope of the graph (m) = (75 - 0) / (1 - 0)
= 75
Thus, The linear equation is;
⇒ y - y₁ = m (x - x₁)
⇒ y - 0 = 75 (x - 0)
⇒ y = 75x
Where, y is number of apples and x is number of hour.
Thus, Number of apple pick in one hour is;
⇒ y = 75 x 1
⇒ y = 75
So, There are 75 apple pick in one hour.
Therefore, The linear equation for this situation is,
⇒ y = 75x
And, There are 75 apple pick in one hour.
Learn more about the linear expression visit:
https://brainly.com/question/12788590
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Please help and answer
Answer:
-3
Step-by-step explanation:
coefficients are numbers multiplied by variables such as 8y. 8 is the coefficient.
Which equation can be represented by the graph?
Answer:
y+10 = -5(x-3)
Explaination:
Finding the slope intercept form provides you with the line your looking for
here you want to isolate y
y = -5(x-3)-10
and then ditrubute the -5 into the parenthesis
y = -5+15-10
Combine like terms
y = -5x +5
and by looking at this in terms on y=mx+b
the line will intercept the y-axis at (5,0) like the line above shows
Can someone help me with these two problems?
Answer:
1. In first question I guess the answer will be: last point
There are no mistakes. Answer is correct.
what is the answer to 6/8 - 3/4?
Answer:
0
Step-by-step explanation:
For common denominator,
6/8 - 3/4 = 6/8 - (3*2)/(4*2) = 6/8 - 6/8 = 0
Which equation is equivalent to the equation 3x - 12 = 24?
A) 15x - 60 = 120
B) 3x = 12
C) 3x = 36
D) x - 4 = 8
E) 12x - 12 = 24
Answer:
C
Step-by-step explanation:
To simplify the equation, all you need to do is add 12 to both sides to cancel out the -12.
The equations that are equivalent to the equation 3x - 12 = 24 are
3x = 36
x - 4 = 8
15x - 60 = 120
Options A, C, and D are correct.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example: x + 2 = 7 is an equation.
We have,
3x - 12 = 24 ____(1)
From (1)
Adding 12 on both sides.
3x = 24 + 12
3x = 36 ____(2)
From (1)
Dividing 3 into both sides.
x - 4 = 8 ____(3)
From (1)
Multiplying 5 into both sides.
5 (3x - 12) = 5 x 24
15x - 60 = 120 ____(4)
From (2), (3), and (4) we see that,
3x = 36
x - 4 = 8
15x - 60 = 120
Thus,
The equations that are equivalent to the equation 3x - 12 = 24 are
3x = 36
x - 4 = 8
15x - 60 = 120
Options A, C, and D are correct.
Learn more about equations here:
https://brainly.com/question/17194269
#SPJ5
find the measures of angles K, M, P, and R in the figure. Note that the figure may not be drawn to scale.
Answer:
right angle
Step-by-step explanation:
the difference between half a number and 19
Answer:
9
Step-by-step explanation:
Jamie sells used cars. She earns 15% of the selling price of each car thatshe sells. The function y = 0.15x models the amount Jamie earns fromselling x number of cars. What is the most appropriate domain of thefunction?
A.all integers
B.all rational numbers
C.all nonnegative integers
D.all nonnegative rational numbers
Answer:
B. All rational numbers
The shape of an underground pool follows a parabola with the function LaTeX: f\left(x\right)=x^2+8xf ( x ) = x 2 + 8 x. What point represents the bottom of the pool? Group of answer choices
Answer:
The point that represents the bottom of the pool is [tex](x,y) = (-4, -16)[/tex].
Step-by-step explanation:
Given that the shape of the underground pool is a parabola, that is, a second order polynomial. Then, the point that represents the bottom of the pool is the vertex, which is contained in the standard form of the parabola. That is:
[tex]y-k = C\cdot (x-h)^{2}[/tex] (1)
Where:
[tex]x[/tex] - Independent variable, dimensionless.
[tex]y[/tex] - Dependent variable, dimensionless.
[tex]h[/tex], [tex]k[/tex] - Coordinates of the vertex, dimensionless.
[tex]C[/tex] - Constant, dimensionless.
The parabola is represented by [tex]f(x) = x^{2}+8\cdot x[/tex] and we proceed to transform into the desired form:
1) [tex]f(x) = x^{2}+8\cdot x[/tex] Given.
2) [tex]f(x) = (x^{2}+8\cdot x + 16)-16[/tex] Modulative property/Existence of the additive inverse.
3) [tex]f(x) +16 = (x+4)^{2}[/tex] Compatibility with the addition/Modulative property/Existence of the additive inverse/Perfect square trinomial.
4) [tex]y + 16 = (x+4)^{2}[/tex] Notation/Result.
Hence, the point that represents the bottom of the pool is [tex](x,y) = (-4, -16)[/tex].
Which of the following could be a solution to a system of linear equations including the line graphed below?
Select one:
A. (-2, 3)
B. (1, 4)
C. (3, 0)
D. (-5,-4)
Answer:
B
Step-by-step explanation:
using quadratic equation
The picture is my question ( 2 math/algebra questions)
Answer:
question 1. (20)X = 100
question 2. the last one
Step-by-step explanation:
Answer:
Step-by-step explanation:
1. 20 a yard and made 100. 100/20=5 yards
20x=100
2. Since they don't give the number of yards they did mow, this would be my answer. I would say half the amount. Since they cut their rates in half, they'll have to cut twice as many to even the amount as before. They would have to cut three - four times as many to make over the original amount. They only have one weekend, so that'll be hard.
The ratio of women to men stationed at Ft. Bragg is 25 to 50. If there are 250 women at Ft. Bragg, how many people are there total stationed there?
A. 500
B. 75
C. 750
D. 1000
Answer:
750 total people
Step-by-step explanation:
25 to 50 = 1/2
So: 250 x 2 = 500 men
500 + 250 = 750 total
Anyone know how to solve this by Elimination Please and thanks ?
What is the correct rate of change of Bill and Kevin's trip
7.Solve the equation below.
(x – 9)2 = 81
x = 18 and x = 0
x = 27 and x = -5
x = 34 and x = 5
no real solution
Brian earns $28.50 tutoring for 3 hours. Assuming he is paid at constant rate, how much would Brian earn tutoring for 18 hours?
Answer:
Step-by-step explanation:
171 just multiply it by 6 since 3 times 6 equals 18
Answer:
171.00 dollars
Step-by-step explanation:
28.50÷3=9.50
9.50= 1 hour
9.50×18=171.00
