Answer:
Each song is 2.3 minutes long
Step-by-step explanation:
55/24=2.3
Steven earns extra money babysitting he charges $33 for 4 hours and $57.75 for 7 hours entering an equation to represent the relationship let x represent the number of hours Stephen babysits and let y represent the amount he charges the equation is y =
Answer:
y = 8.25x
Step-by-step explanation:
Linear Modeling
Some events can be modeled as linear functions. If a situation comes where a linear model is suitable, then we need two sample points to make the model and predict unknown behaviors.
The linear function can be expressed in the slope-intercept format:
[tex]y=mx+b[/tex]
The equation of a line passing through points (x1,y1) and (x2,y2) can be found as follows:
[tex]\displaystyle y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]
Let's use linear modeling to represent Steven's earnings he makes babysitting. Call y the money he charges by x hours of work.
We know he charges y1=$33 for x1=4 hours, and y2=$57.75 for x2=7 hours. The ordered pairs are (4,33) and ( 7, 57.75)
Computing the equation of the line we have:
[tex]\displaystyle y-33=\frac{57.75-33}{7-4}(x-4)[/tex]
Operating:
[tex]\displaystyle y-33=\frac{24.75}{3}(x-4)[/tex]
[tex]y - 33 = 8.25( x - 4 )[/tex]
[tex]y = 8.25x - 33 + 33[/tex]
y = 8.25x
There is a proportional relationship.
if you subtract 1 by 2 from a number and multiply result 1by 2, you get 1by 8. what is the number
Answer:
the answer is 9/16 I hope this doesn't require step by step solve
Answer:
x = 4Step-by-step explanation:
x - 2 x 2 = 8
x times 2 = 8
x = 4
another easy 20 points I don't know how to do this and my teacher can't talk to me right now please help
Answer:
The answer is attached!
Step-by-step explanation:
But, to find the relative frequencies you will have to find the total number of responses, which is 143.
Then you will go to each box and divide the number given by the total number of response. I will show you each box below:
[tex]\frac{62}{143} = .43\\\\\frac{32}{143} = .22\\\\\frac{29}{143} = .20\\\\\frac{20}{143} = .14[/tex]
(Note here that all these add up to exactly 1 when you don't round them, but I rounded them and they add up to .99)
Hope this helps!!
- Kay :)
5 • (- 10) x = 100 Esse número apagado foi
(A) 2
(B) 20
(C) -5
(D) -257*
The difference is –6i –10 + 4i 3 – 9i 4 – 10i
Answer:
The answer choice is D.4-10i
Answer:
D 4 - 10i
Step-by-step explanation:
Ina Almeida
Solve each equation.
16x=176
Answer:
x = 11
Step-by-step explanation:
16x = 176 is the problem
You bring the 16 over the the other side.
The equation changed.
x = 176 ? 16. You don't no the operation.
If the other side is number + variable,
it equals to division cause division is
the reverse operation.
That means, the equation changes again!
x = 176/16 Its easier to reduce cause its a
2+ number one.
176/16 reduced is 11
Select the table that represents a linear function. (Graph them if necessary.)
Answer:
table B represents the linear equation which is:
[tex]y=-3x+11[/tex]
The graph of the linear function is also attached below.
Step-by-step explanation:
Given the table B values
x y
0 11
1 8
2 5
3 2
As the equation for the linear function
[tex]y=mx+b[/tex]
where m is the slope and b is the y-intercept
As the y-intercept can be obtained by setting x=0
From the table, it is clear that when the value of x=0, then the value of
y=11.
so (0, 11) is the y-intercept.
Also taking two points (0, 11) and (1, 8) to find the slope
[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]\left(x_1,\:y_1\right)=\left(0,\:11\right),\:\left(x_2,\:y_2\right)=\left(1,\:8\right)[/tex]
[tex]m=\frac{8-11}{1-0}[/tex]
[tex]m=-3[/tex]
so substituting the value m=-3 and the point (1, 8) in the point-slope form
[tex]y-y_1=m\left(x-x_1\right)[/tex]
[tex]y-8=-3\left(x-1\right)[/tex]
[tex]y-8=-3x+3[/tex]
[tex]y=-3x+3+8[/tex]
[tex]y=-3x+11[/tex]
comparing the equation with the slope-intercept form of linear equation
[tex]y=mx+b[/tex]
[tex]y=-3x+11[/tex]
here
m=slope=-3b=y-intercept=11Therefore, table B represents the linear equation which is:
[tex]y=-3x+11[/tex]
The graph of the linear function is also attached below.
Answer:
B
Step-by-step explanation:
Please help me ASAP!!!!!!!!!
Show two different ways to factor −4x −28.
Step-by-step explanation:
-4x - 28 = -4(x + 7) or 4(-x - 7)
Topic: Algebraic factorization
If you like to venture further, do check out my insta (learntionary) where I regularly post useful math tips! Thank you!
Please help me with this homework
You need to to put every number of x in x of each equation
A truck’s position relative to a car’s position is -60 feet. The car and the truck move in the same direction, but the car moves 5 feet per second faster for 8 seconds. What operations could be used to find the truck’s relative position after 8 seconds? Explain
Answer:
I think its false
Step-by-step explanation:
the car went 8 second faster
Help me do not understand
Answer:
The slope is 4/60. Simplified is 1/15
Step-by-step explanation:
Rise over run :)
What civilization did Buddhism begin in?
Answer:
Buddhism arose in the eastern part of Ancient India, in and around the ancient Kingdom of Magadha (now in Bihar, India), and is based on the teachings of Siddhārtha Gautama.
What percentage is x of 4x?
Answer: 25%
Step-by-step explanation:
Since there are 4 x's one x = 25%
If triangle STR ~ triangle PTQ, find QT
Answer:
QT = 45
Step-by-step explanation:
ST = 65
SP = 26
RQ = 30
QT = 4x - 3
Given that ∆STR is similar to ∆PTQ, therefore:
[tex] \frac{ST}{PT} = \frac{RT}{QT} [/tex]
Plug in the values
[tex] \frac{65}{65 - 26} = \frac{30 + (4x - 3)}{4x - 3} [/tex]
Solve for x
[tex] \frac{65}{39} = \frac{30 + 4x - 3)}{4x - 3} [/tex]
[tex] \frac{5}{3} = \frac{27 + 4x}{4x - 3} [/tex]
Cross multiply
[tex] 5(4x - 3) = 3(27 + 4x) [/tex]
[tex] 20x - 15 = 81 + 12x [/tex]
Collect like terms
[tex] 20x - 12x = 81 + 15 [/tex]
[tex] 8x = 96 [/tex]
Divide both sides by 8
[tex] x = \frac{96}{8} [/tex]
[tex] x = 12 [/tex]
✅QT = 4x - 3
Plug in the value of x
QT = 4(12) - 3 = 48 - 3
QT = 45
Alyson has 46 beads to make bracelets. Each bracelet has 5 beads.
How many more beads does Alyson need so that all the beads she has
are used?
Answer:
4
Step-by-step explanation:
46+4 = 50
50/5 = 10
WILL GIVE EXTRA POINTS
Assignment name: Segment Addition
What does the X in the tall rectangle mean in math?
Answer:
What does the vertical rectangle with intersecting lines in the shape of an "x" mean? A rectangle which has an X inside means there is a Unicode character or emoji that is meant to show there, but your system doesn't support it.
Step-by-step explanation:
go to google
The LCM of 4 and 7 is . (1 point) Blank 1:
pls help
Answer:
28
Step-by-step explanation:
4*7=28
Mark me as brainliest
Answer:
LCM of 4 and 7 = 28
hope you understood!
Help!
Identify a segment skew to AB using the figure
Answer:
EH
Step-by-step explanation:
Skew lines are lines that do not intersect (touch) or are parallel!
A line segment skew to AB is EF. Therefore, option EF is the correct answer.
We need to identify a segment skew to AB.
What are skew lines?Skew lines are a pair of lines that are non-intersecting, non-parallel, and non-coplanar. This implies that skew lines can never intersect and are not parallel to each other. For lines to exist in two dimensions or in the same plane, they can either be intersecting or parallel.
From the given figure, line EF is skew line to AB.
A line segment skew to AB is EF. Therefore, option EF is the correct answer.
To learn more about the skew lines visit:
https://brainly.com/question/1995934.
#SPJ2
The expression on the left side of an equation is shown below.
3x+9=0
If the equation has no solution, which expression can be written in the box on the other side of the ec
-9
-3
ООО
3x
O 3x+ 9
Nun
Anyone know this question.
I need help quick.
Thanks.
(8x − 5)(2x2 − 5x − 6)
Answer:
(-5x - 2)(8x - 5)
I hope this helps!
PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! *EXTRA POINTS* DONT SKIP:((
Answer:
25 = 10 + w
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Plz mark as brainliest!!!
What is the solution for this equation
Answer:
x={2,3}
Step-by-step explanation:
√5x-6=x
5x-6=x^2
x^2-5x+6=0
x^2-3x-2x+6=0
(x^2-3x)-(2x-6)=0
x(x-3)-2(x-3)=0
(x-2)*(x-3)=0
x-2=0
x=2
x-3=0
x=3
Find the measure of each angle.
19)
x
80°
A) -115°
C) -80°
B) -100°
D) -170°
Answer:
Step-by-step explanation:
- 100°
1 Given that in the solution of the system below the value of y is -2, what is the value of b?
X - Y = 4
2x + 3y = b
Answer:
b=6
Step-by-step explanation:
x=6
6+-2=4
2(6)+3(-2)=b
2x6=12
3x-2= -6
12+ -6+=6
b=6
Ariel has decided to survey a random sample of teenagers in her community about the community recreation center. There are 94 teenagers in her community. Which of the following sample sizes would best represent the preferences of all the teenagers in her community?
A. 13 teenagers
B. 32 teenagers
C. 9 teenagers
D. 26 teenagers
Answer:
26
Step-by-step explanation:
Help plssssssssssssssssss
Answer:
I believe is 3 4/6
Step-by-step explanation:
22/5 : 6/5
22/5 * 5/6
22/6
11/3
3 4/6
Answer:
11/3 or 3and2/3
Step-by-step explanation:
To change a mixed number into a fraction, you multiply the whole number by the denominator and add it to the numerator.
4 and 2/5 = 22/5
1 and 1/5 = 6/5
To divide fractions, flip one upside down and then multiply top by top, bottom by bottom
(22/5) / (6/5) = (22/5) x (5/6) = (22x5)/(5x6) = 110/20 = 11/3 or 3and2/3
simplify
75 ÷ 15 × (-6+17-8) x4
Answer:
60
Step-by-step explanation:
-6 + 17 - 8 = 3Plug 3 in: 75 ÷ 15 × (3) × 475 ÷ 15 = 5Plug 5 in: 5 × 3 × 45 × 3 × 4 = 60I hope this helps!