1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bad White [126]
3 years ago
9

The Bernards are trying to determine their babysitter's rates but are to embarrassed to just ask her. They were charged $20 for

2 hours last week, but only $31 for 4 hours this week. What is the formula to determine A(Amount) given t(time in hours)?
Mathematics
1 answer:
Alina [70]3 years ago
3 0

Answer:

A = 5.5t + 9

Step-by-step explanation:

We assume that the relationship between t and A is linear.

We have two points on a line: (2, 20) and (4, 31).

We now find the equation of the line.

A = mt + b

m = (31 - 20)/(4 - 2) = 11/2 = 5.5

20 = 5.5(2) + b

20 = 11 + b

b = 9

A = 5.5t + 9

You might be interested in
2) About how many students do not prefer non- fiction?
Mkey [24]

Answer:

about 465 students do not prefer non-fiction

Step-by-step explanation:

first I labeled each section on the pie the

the blue area looks like the smallest so that's most likely 60 students

then orange is 75 students

dark blue is the biggest so its 180 students

gray and yellow are the last ones left and gray is bigger than yellow so gray is 150

the number of students that prefer non-fiction is 100 so you add all the other number to get how many students don't prefer non-fiction=465

I hope this helps and makes sense ;D

3 0
2 years ago
HELP ME PLS
kolbaska11 [484]

<u>Answer:</u>

Slope = 27/11

AB = 29.15 u

<u>Step-by-step explanation:</u>

<u>Given :- </u>

  • Two points are given to us .
  • The points are A(7,15) and B(18,42)

<u>To Find :- </u>

  • The slope of the line .
  • The length of line AB .

We can find the slope of the line passing through the points ( x_1,y_1) and ( x_2,y_2)as ,

\implies m = \dfrac{ y_2-y_1}{x_2-x_{1}}

  • Plug in the respective values ,

\implies m = \dfrac{ 42-15}{18-7} \\\\\implies \boxed{ m = \dfrac{ 27}{11 }}

<u>Hence the slope of the line is 27/11 .</u>

\rule{200}2

<u>Finding the length of AB :-</u>

  • We can find the distance between them by using the Distance Formula .

\implies Distance =\sqrt{ (x_2-x_1)^2+(y_2-y_1)^2} \\\\\implies Distance =\sqrt{ (18-7)^2+(42-15)^2 }  \\\\\implies Distance =\sqrt{ 11^2 + 27^2 } \\\\\implies Distance =\sqrt{ 121 + 729 } \\\\\implies Distance = \sqrt{ 850} \\\\\implies \boxed{ Distance = 29.15 \ units }

<u>Hence the length of AB is 29.15 units </u>.

5 0
3 years ago
Write the equations of three distinct lines to have the same y-intercept -one
Vlad [161]

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept

Answer:

y = -2x + 1

y = 0.6x + 1

y = x + 1

y = 1

y-intercept = 1

3 0
3 years ago
Write the coefficient of x in 2+xsqaure+x
polet [3.4K]

Answer:

the coefficient of x is 1

Step-by-step explanation:

In the expression ax²+bx+c=0

a is the coefficient of x²

b is the coefficient of x

2+x²+x = x²+x +2 = 1x²+1x +2 =

So in this expression right above the coefficient of x is 1

3 0
3 years ago
In a championship basketball game, Paula Zimmerman scored twice as many points as Maria Kaminsky. If the total number of points
Strike441 [17]

Answer:

x=34

y=17

Step-by-step explanation:

Let Paula's score be= x

Let Maria's score be=y

<u>Given</u><u>:</u>

x=2y

x+y=51

<u>Substitution</u><u>:</u>

2y+y=51

<u>Formula</u><u>:</u>

2y+y=51

3y=51

y=17

x=2y

x=2(17)

x=34

<u>Proof</u><u>:</u>

x+y=51

34+17=51

51=51

Hope this helps ;) ❤❤❤

5 0
3 years ago
Other questions:
  • Find the volume of this cylinder. Give your answer to one decimal place.
    12·2 answers
  • What is X less than 1/2 ​
    13·1 answer
  • Pleases help (: Simplify the expression below √256
    12·1 answer
  • Nikki ran 56 yards ran 18 yards what is the difference in the distance they ran
    8·1 answer
  • Ms. Smith’s class raised $525.50 to go on a field trip. They rented a bus for $300 and budgeted $22.75 per student for meals. Th
    7·1 answer
  • Given CSC A= sqrt(85)/6 and that angle A is in Quadrant I, find the exact value of cot A
    7·1 answer
  • What is 6.5% of $6991.94
    8·2 answers
  • Pls Help!! (ILL GIVE BRAINLIEST)
    9·1 answer
  • Which statements are true for the function y=Ixl -2?
    8·1 answer
  • 4. The temperature at 6:00 a.m. was 45°F and the temperature at 10:30 a.m. was 12.8°C. What was the change in temperature betwee
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!