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
Juli2301 [7.4K]
3 years ago
13

If it took 7 hours to mow 4 lawns, then at that rate, how many lawns could be mowed in 35 hours?

Mathematics
2 answers:
Soloha48 [4]3 years ago
6 0

Answer:

20 lawns in 35 hours

Step-by-step explanation:

timofeeve [1]3 years ago
4 0

Answer: 20

Step-by-step explanation:

Since you mow 4 in seven hours, and 7 goes into 35 five times, the. 4x5=20

You might be interested in
A random sample of n = 9 structural elements is tested for comprehensive strength. We know the true mean comprehensive strength
irinina [24]

Answer:

Probability that the sample mean comprehensive strength exceeds 4985 psi is 0.99999.

Step-by-step explanation:

We are given that a random sample of n = 9 structural elements is tested for comprehensive strength. We know the true mean comprehensive strength μ = 5500 psi and the standard deviation is σ = 100 psi.

<u><em>Let </em></u>\bar X<u><em> = sample mean comprehensive strength</em></u>

The z-score probability distribution for sample mean is given by;

                          Z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \mu = population mean comprehensive strength = 5500 psi

            \sigma = standard deviation = 100 psi

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

Now, Probability that the sample mean comprehensive strength exceeds 4985 psi is given by = P(\bar X > 4985 psi)

    P(\bar X > 4985 psi) = P( \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n} } } > \frac{4985-5500}{\frac{100}{\sqrt{9} } } ) = P(Z > -15.45) = P(Z < 15.45)

                                                                  = <u>0.99999</u>

<em>Since in the z table the highest critical value of x for which a probability area is given is x = 4.40 which is 0.99999, so we assume that our required probability will be equal to 0.99999.</em>

4 0
3 years ago
Simplify (8x^2 - 1 + 2x^3) - (7x^3 - 3x^2 + 1).
Elenna [48]

Answer:

31x^2-2 is the answer....

Step-by-step explanation:

7 0
3 years ago
using the equation G = 10-1.25t. What is the x-intercept of the equation and what is its interpretation in the context of the pr
Masja [62]

Answer:

the x axis is 10, its interpretation is actually G, so on a graph instead of X and Y you would have G and T

8 0
3 years ago
What does P(B/A) = 0.50 mean in terms of the Venn diagram?
Serggg [28]

Answer:

of the 4 people that have a sister,  2 of them have a brother

Step-by-step explanation:

probability of B given A

given that the person has a sister, what is the probability they have a brother

P (B/A) = 1/2

with this venn diagram

of the 4 people that have a sister,  2 of them have a brother


3 0
3 years ago
Express each percent as a fraction or mixed number in the simplest form. 2.5%
Blizzard [7]

Answer:

The answer is 2 1/2 or in mixed form 5/2

Hope I helped :)

6 0
3 years ago
Read 2 more answers
Other questions:
  • High SchoolMathematics 5 points What is the opposite of the opposite of -1.4? Ask for details Follow Report by Darlasiller 07/03
    11·1 answer
  • A school assigns each student an identification number. the number consists of 3 digits out of 10 possible digits, and no digits
    13·1 answer
  • What is the right answer. Thank you!!!! :) there is a picture also!
    9·1 answer
  • You can click and drag an icon on a computer screen. Is this an example of a translation? Explain
    5·1 answer
  • Sebastian and Caroline obtained a 30-year, fixed rate mortgage for $154,850 on a home that cost them $169,900. If the interest r
    8·1 answer
  • A cyclist travels from Ato B in two stages. Stage one is 28kmwhich is 2/7 of the total journey . How long is stage 2
    10·1 answer
  • Which is the equation of the given line in slope-intercept form
    15·1 answer
  • Find the area of the shape shown below
    13·2 answers
  • 1. How do you find the slope &amp; y-intercept (non-proportional) from a table of x and y coordinates when using the Ti-Nspire?
    6·1 answer
  • Plz help me plssssssssssssss​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!