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
malfutka [58]
2 years ago
11

Bob’s monthly phone bill is made up of a $10 fee plus $0.05 per minute. Bob’s phone bill for July was $22. Write an equation to

model the situation using m to represent the number of minutes. Solve the equation to determine the number of phone minutes Bob used in July.
Mathematics
2 answers:
Blizzard [7]2 years ago
5 0

Answer:

equation: 10 + 0.05x=22

Step-by-step explanation:

the next step after writing the equation would be to subtract 10 from both sides to get 0.05x=12. after this you would then have to divide 12 by 0.05 to get 240 minutes. you could check it by putting 240 in for x to get 10+0.05(240)=22. you would then multiply 0.05 by 240 to get 12 and then add 10 onto it to get 22 which was already given.

PIT_PIT [208]2 years ago
3 0

9514 1404 393

Answer:

  equation: 10 +0.05m = 22

  solution: Bob used 240 minutes in July

Step-by-step explanation:

Bob's bill is the total of the fixed fee and the charges based on minutes. The latter is 0.05m, where m is the number of minutes. Hence, Bob's July bill is ...

 10 + 0.05m = 22 . . . . . total of charges for July is $22

__

The equation is solved by subtracting the constant and dividing by the coefficient of m.

  0.05m = 12 . . . . . subtract 10

  m = 12/0.05 = 240

Bob used 240 minutes in July.

You might be interested in
Yolanda participated in a walkathon in which each kilometer walked raised $10 for charity. Her goal was to raise more than $300
KiRa [710]

Answer:

B

Step-by-step explanation:

She needed to raise at least $250

$250 divided by $10 equals 25 km

So she need more than 25km to raise over $300

3 0
3 years ago
Let X denote the temperature (degree C) and let Y denote thetime in minutes that it takes for the diesel engine on anautomobile
BlackZzzverrR [31]

Answer:

Step-by-step explanation:

Given f_{XY} (x,y) = c(4x + 2y +1) ; 0 < x < 40\,and\, 0 < y

a)

we know that \int\limits^\infty_{-\infty}\int\limits^\infty_{-\infty} {f(x,y)} \, dxdy=1

therefore \int\limits^{40}_{-0}\int\limits^2_{0} {c(4x+2y+1)} \, dxdy=1

on integrating we get

c=(1/6640)

b)

P(X>20, Y>=1)=\int\limits^{40}_{20}\int\limits^2_{1} {\frca{1}{6640}(4x+2y+1)} \, dxdy

on doing the integration we get

                        =0.37349

c)

marginal density of X is

f(x)=\int\limits^2_{0} {\frca{1}{6640}(4x+2y+1)} \, dy

on doing integration we get

f(x)=(4x+3)/3320 ; 0<x<40

marginal density of Y is

f(y)=\int\limits^{40}_{0} {\frca{1}{6640}(4x+2y+1)} \, dx

on doing integration we get

f(y)=\frac{(y+40.5)}{83}

d)

P(01)=\int\limits^{40}_{0}\int\limits^2_{1} {\frca{1}{6640}(4x+2y+1)} \, dxdy

solve the above integration we get the answer

e)

P(X>20, 0

solve the above integration we get the answer

f)

Two variables are said to be independent if there jointprobability density function is equal to the product of theirmarginal density functions.

we know f(x,y)

In the (c) bit we got f(x) and f(y)

f(x,y)cramster-equation-2006112927536330036287f(x).f(y)

therefore X and Y are not independent

4 0
3 years ago
Measure of arc JKM= ??
Sergio039 [100]

Answer:

180°

Step-by-step explanation:

JM is the diameter of the circle with center L.

\huge \red{ \boxed{\therefore m\widehat{(JKM)} = 180\degree}}  \\

8 0
3 years ago
What is the average rate of change for this quadratic function for the interval
hjlf

Answer:

hi the answer should be C or 8

Step-by-step explanation:

Hope this helps!

7 0
2 years ago
Read 2 more answers
Find the product then simplify the anwser.<br> 3/4×9/4=
Aneli [31]

Answer:

extract form 27/16

decimal form 1.6875

mixed number form 1 11/16

please mark me the most brainliest

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Solve the proportion 3x/10=9/4
    13·2 answers
  • PLEASE!!!I NEED HELP!!!!!!!
    14·1 answer
  • Pencils come in packages of 10.Erasers come in packages of 12. Phillips wants to purpose the smallest number of pencils and eras
    13·1 answer
  • Please help me on this and show work. I don't know how to find y
    7·1 answer
  • Need help on 5-12! Its geometry.
    8·1 answer
  • Solve the inequality ||x-4|-2|&lt;3
    13·1 answer
  • Solve for the area of the combined shape
    10·1 answer
  • 2xy^2(23x2y3)<br> simplify
    13·1 answer
  • If a=under root s(s-a)(s-b)(s-c) then the value of a, when a =3 b =4c = 5 and s =a+b+c by 2
    10·1 answer
  • -34 + 91 = -3 (4x + 1) + 6x
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!