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
Leviafan [203]
3 years ago
13

The number of bags of mulch you need to cover a planting area varies jointly with the area to be mulched (a) in sq ft and the de

pth of the mulch (d) in feet. If you need 10 bags to mulch 120ft to a depth of 3in. How many bags do you need to mulch 200ft to a depth of 4in? HELPPP ASAP WILL GIVE BRAINLIST !!!
Mathematics
1 answer:
Lena [83]3 years ago
8 0

Answer:

  22 2/9

Step-by-step explanation:

When z "varies jointly" with x and y, it can be described by the formula

   z = kxy

Here, we have bags of mulch (n) varying jointly with area (a) and depth (d), both in feet. The given information can let us find the value of k.

  n = kad

  10 = k·(120)(1/4)

  10/30 = k = 1/3 . . . . . divide by the coefficient of k

Now, we can fill in the other values of interest.

  n = (1/3)·(200)·(1/3) = 200/9

  n = 22 2/9

You need 22 2/9 bags of mulch to cover 200 ft² to a depth of 4 inches.

_____

<em>Comment on the problem</em>

This problem requires the formula be written with both area and depth expressed in feet, yet it gives depth in inches. The formula can also be written using depth in inches. In that case, k = 1/36.

You might be interested in
Theresa’s computer at home has 1 terabyte of storage. How many more bits of storage does her computer have than the combined bit
posledela

Answer:

Not enough information provided

Step-by-step explanation:

To find the difference between one terabyte and the storage available to the other mediums, we would need to know the storage available to those mediums.  They can all have potentially different amounts of storage space, so we have no way to answer that part of the question.

We can however find out how many bits her computer has.  There are two lines of thought  to follow though.  kilo, mega, giga etc each generally note a multiple of 1000 in common terms.  In computer tech though, the number 1024, or 2¹⁰, is often used instead.

Starting with the layman's powers of 10, a terabyte is a thousand gigabytes, which in turn is a thousand megabytes, which is a thousand kilobytes, which is a thousand bytes.

That means that a terabyte stores 1 × 10¹² bytes.  A byte however is eight bits, giving us 8 × 10¹² bits.

Using the nerdier powers of 2 then, a byte is eight bits, so we'll call that 2³.  We then go up by multiples of 2¹⁰.  With the same logic above, a terabyte is 2¹⁰ gigabytes, which is 2¹⁰ megabytes, which is 2¹⁰ kilobytes, which is 2¹⁰ bytes.  Adding the exponents up, then a terabyte would be 2⁴³ bits

So depending on whether you use the powers of ten or powers of 2 conventions, then a terabyte is either 8 × 10¹² bits, or 2⁴³ bits.

If you want to express the latter as a power of ten for proper scientific notation, then it would be 8.796093022208 × 10¹² - a rather useless way of expressing it, but just to cover all bases.

3 0
3 years ago
A new electric car uses 7.3% of its battery to drive 6.4 miles, at that rate how many miles can you drive using 100% of the batt
Natali [406]

Answer:

83.2 miles

Step-by-step explanation:

what i had to do was multiply 7.3 by 13 and that was 94.9 that was as close as i could get it to 100 so i then multipled 6.4 by 13 and got 83,2 miles

5 0
2 years ago
Factor completely: 3x2 + 2x - 1
Alex777 [14]
3x^{2}+2x-1=3x^{2}+3x-x-1= \\  \\ 3x(x+1)-(x+1)=(3x-1)(x+1)

==================================
<em />
<em>"Associate with people who are likely to improve you."</em>
4 0
3 years ago
Read 2 more answers
I need help please! I need to know what is/how to get a,b, and c for factoring trinomials of the problem (x-3)(x+4)=0.
Readme [11.4K]

Answer: Trinomials often (but not always!) have the form x2 + bx + c. ... So, how do you get from 6x2 + 2x – 20 to (2x + 4)(3x −5)? Let's take a look. Factoring Trinomials

Step-by-step explanation:

6 0
3 years ago
Which function describes this graph?<br><br> f(x)=4x+2<br> f(x)=x+2<br> f(x)=1/4x+2
GaryK [48]
F(x) = 1/4x + 2

This means that the y-intercept is 2 and the slope is 1/4.

Hope this helps!
7 0
3 years ago
Read 2 more answers
Other questions:
  • 2 ft = 27 in drawing length blank actual length 108in
    6·1 answer
  • Which of the following statements is not true?
    10·1 answer
  • The reciprocal of 1/50 is _____. 0 1 50
    12·2 answers
  • X^2+12x+36 =0 what is the range
    6·1 answer
  • Madge is the manager at a sports arena that draws an average 3,500 patrons per event. Each ticket taker can process 200 event-go
    5·1 answer
  • there are 4 aces and 4 kings in a standard deck of 52 cards. you picking card random. what is the probability of selecting an ac
    5·1 answer
  • What is the reciprical and product of the fraction 3/7?​
    6·1 answer
  • 0/10
    8·1 answer
  • PLEASE NO SPAM!!!! I NEED A GOOD GRADE ON THIS!!!!
    12·1 answer
  • Please help me with this question!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!