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
Semenov [28]
3 years ago
15

Devin has started a lawn care service. He will charge a mowing fee of $7 plus $2 per square yard of lawn. He also offers trimmin

g service, at $5 plus $1 per yard of the perimeter. Using x for the length of the lawn and y for the width of the lawn, which part of the expression 7 + 2xy + 5 + (2x + 2y) represents the charge for the mowing?
Mathematics
2 answers:
IceJOKER [234]3 years ago
6 0

Answer:

it D.7+2xy

Step-by-step explanation:

apexs

Maru [420]3 years ago
4 0

Answer:7+2xy

Step-by-step explanation:apex

You might be interested in
Find the value of x in the given figure using parallel lines
pantera1 [17]

Answer:

x = 18 degrees

Step-by-step explanation:

because lines n and m are parallel, 3x and 126 are same side interior angles. This means that when added up they equal 180, so make an equation as so:

3x + 126 = 180

Solve for it and x will equal 18.

6 0
3 years ago
A bike path is 12.5 miles. Dominic is 70% of the way to the end. How far is Dominic on the​ path?
stepan [7]

Answer:

8.75 miles is 70%

Step-by-step explanation:

12.5

1.25 is 10 percent

multiply that by 7

8.75 miles

3 0
3 years ago
The sum of 237 and six times the opposite of a number is 405. What is the number?
Bond [772]

Answer:

(A) x=-28

Step-by-step explanation:

237 -6x = 405           [note that 6*(-x) is (-6x)]

  -6x = 168           [subtract 237 from both sides]

   x = -28             [divide both sides by (-6)]

6 0
3 years ago
9x+9y=9. Solve for Y
Alja [10]

Answer:

y = 1 - x

Step-by-step explanation:

9x + 9y = 9 ( divide through by 9 )

x + y = 1 ( subtract x from both sides )

y = 1 - x

5 0
2 years ago
Read 2 more answers
If 90 percent of automobiles in Orange County have both headlights working, what is the probability that in a sample of eight au
Alex17521 [72]

Answer:

P(X \geq 7) = P(X=7) +P(X=8)

And we can find the individual probabilities using the probability mass function

P(X=7)=(8C7)(0.9)^7 (1-0.9)^{8-7}=0.3826  

P(X=8)=(8C8)(0.9)^8 (1-0.9)^{8-8}=0.4305  

And replacing we got:

P(X \geq 7) = P(X=7) +P(X=8)=0.3826 +0.4305=0.8131

Step-by-step explanation:

Previous concepts  

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".  

Solution to the problem

Let X the random variable of interest "number of automobiles with both headligths working", on this case we now that:  

X \sim Binom(n=8, p=0.9)  

The probability mass function for the Binomial distribution is given as:  

P(X)=(nCx)(p)^x (1-p)^{n-x}  

Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

And for this case we want to find this probability:

P(X \geq 7) = P(X=7) +P(X=8)

And we can find the individual probabilities using the probability mass function

P(X=7)=(8C7)(0.9)^7 (1-0.9)^{8-7}=0.3826  

P(X=8)=(8C8)(0.9)^8 (1-0.9)^{8-8}=0.4305  

And replacing we got:

P(X \geq 7) = P(X=7) +P(X=8)=0.3826 +0.4305=0.8131

3 0
3 years ago
Read 2 more answers
Other questions:
  • Use your calculator to find the smallest solution to <img src="https://tex.z-dn.net/?f=-5e%5E%7B-4x%2B2%7D%2B3%3D%5Cfrac%7B1%7D%
    5·1 answer
  • I need help ASAP! Is it A,b,c, or d?
    15·1 answer
  • T - 4 (t - 8) + 7 (3t + 4)
    9·1 answer
  • What is the product written in scientific notation? (4.5x10^-8) (6x10^-4)A.
    13·1 answer
  • 8/2-4x6:(2+6) how it’s
    8·2 answers
  • 30 Points
    15·2 answers
  • Hi dev lol hahahahhahahahahahahahahahahahahaha
    9·1 answer
  • What is value of 1/3 ÷ 1/12 *<br> 4<br> 1/4<br> 1/36<br> 1/6
    10·1 answer
  • Need a quick answer please
    15·1 answer
  • Please help asap !!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!