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
Kay [80]
3 years ago
15

Dave can complete a sales route by himself in 4 hours. James can do the same job in 5 hours. How long will it take them to do it

working together?
Mathematics
1 answer:
Ber [7]3 years ago
4 0
X/4 + x/5 = 1
5x/20 + 4x/20=1
9x/20 =1
9x = 20
x = 2.22 hours
You might be interested in
Need help! Anyone know?
antiseptic1488 [7]
It’s 90 degrees because it’s a right angle
6 0
3 years ago
Write 50,000 using power of ten, multiplication and an exponent
Nookie1986 [14]

Answer:

It's 5 x 10 power 4

Please make Brainlist

6 0
3 years ago
For what value does x does 3^2x= g^3x-4<br> A)1<br> B)2<br> C)3<br> D)4
netineya [11]
The question has an error because the letter g does not make sense in the context.

I will assume that the g is really the number 9.

In that case, the equation to solve would be:

3^{2x} =  9^{3x-4}

You can solve for x following these steps:

1) make      9=3^2

=>

3^{2x} = 3^{2(3x-4)}

2) Given that the basis are equal the exponents have to be equal =>

2x = 2(3x - 4)

3) Solve:

2x = 6x - 8

6x - 2x = 8

4x = 8

x = 8/4

x = 2 which is the option B) which leads me to think that a 9 instead of g in the equation should be right.

Under that assumption, the answer is the option B) x = 2.

3 0
3 years ago
A bar graph titled Album Type Sold per Year has year on the x-axis and number of albums sold on the y-axis. For C D s, in 2008 t
stira [4]

Answer:

True, True, False, True, False, True

Step-by-step explanation:

<u>CDs have a higher mean than digital</u>

<u />

Let's check.  CD mean is (1000 + 800 + 800 + 600 + 400 + 200)/6 = 633.33

Digital mean: (100 + 300 + 300 + 500 + 700 + 900)/6 = 466.67

CD's mean is higher.  Since you are dividing byt he same number you also could have just added the amount and found which was a larger number.  But yes, this is true.

<u>The range of digital is 800</u>

<u />

The range is the highest number inus the lowest number.  For digital the highest is 900 and lowest is 100 so the ange is 900-100 = 800.  So this is true.

<u>The median of CDs is 400. </u>

<u />

The median is the middle value for odd numbers of values, or the average of the two middle values.  6 total values means you have to take the third and fourth and average them.  in CDs the middle values are 800 and 600, the average is 700, so that is what the median is.  this is false.

<u>Both have the same interquartile range. </u>

<u />

Interquartile range is to find the middle number or numbers like in median, then take the two parts it is split into and find the "median" of those.  Then subtract the larger one fromt he smaller one.

IQR of CD the first half is 200, 400, 600 so the middle here is 400, second half has a middle number of 800 so IQR here is 800-400=400

IQR of digital is 700-300 = 400 so yes both are the same.

<u>Both have the same median</u>

<u />

We know the medan of CDs is 700 then findign the median of digital is (300+500)/2 = 400.  So no, the medians are not the same.

<u>Digital’s mean is around 467. </u>

<u />

We founf the mean for digital to be 466.67 which rounds up to 467, So I would say it is true.

8 0
4 years ago
Read 2 more answers
Write the decimal as a fraction or a mixed number in simplest form.<br> -2.70
Ira Lisetskai [31]

Answer:

-2 7/10

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • let x be the number of loads carriers and y the number of loads by air carrier.which system of inequalities represent this solut
    5·1 answer
  • The base of a parallelogram is 18 inches longer than three times the height. The area of the parallelogram is 216 square inches.
    15·1 answer
  • Membership at the Universal Fitness Gym offers yearly memberships for $275. Yoga classes cost an additional $5 per class. Write
    13·1 answer
  • Ohh plz help me i really could use it
    7·1 answer
  • Nancy has a 3.5-pound bag of birdseed. She uses 3/4 of the bag to fill a bird feeder in her garden. Then, she puts 0.25 pounds i
    13·1 answer
  • Tony is planning to buy a house. He needs to borrow $565,000 from the bank for 30 yrs at an APR of 3.2%. What will his monthly p
    9·1 answer
  • An engineer is building a model of a vehicle, using the scale factor 2:43.The actual dimensions of the vehicle are given in this
    10·2 answers
  • (All yes or no questions). Determine whether each of the following pairs of angles have equal measures:
    13·1 answer
  • Solve 31-X + (2 x + 1)] = x - 1.
    10·1 answer
  • D
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!