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
antoniya [11.8K]
3 years ago
11

The length of a bridge is 140 m. The length of each of Robert's paces is 55 cm.

Mathematics
1 answer:
Sindrei [870]3 years ago
6 0

Answer:

255 steps

Step-by-step explanation:

They give us the length of the bridge and the length of each step of Robert, therefore we must divide these values to find the number of steps necessary, but first we must pass the distance of the bridge to centimeters:

140m * 100cm / 1m = 14000

Therefore the bridge would have a length of 14000 centimeters, we divide:

14000/55 = 254.54

Which means that Robert take at least 255 steps to fully walk the bridge.

You might be interested in
The SAT mathematics scores in the state of Florida for this year are approximately normally distributed with a mean of 500 and a
Greeley [361]
<u></u><u>The correct answer is 47.5%, or 0.475.</u>

Explanation:
The empirical rule states that in any normal distribution:

68% of data will fall within 1 standard deviation of the mean;
95% of data will fall within 2 standard deviations of the mean; and
99.7% of data will fall within 3 standard deviations of the mean.

The mean is 500 and the standard deviation is 100.  This means that 700 is 2 standard deviations away from the mean:

(700-500)/100=200/100=2.

We know that 95% of data will fall within 2 standard deviations from the mean.  However, included in the 95% is data less than the mean and greater than the mean.  Since we are only concerned with the scores from 500 to 700, we only want the half that is greater than the mean:

95/2 = 47.5%, or 0.475.
8 0
3 years ago
Read 2 more answers
Find the value of the expression (5-3) x 2+6
Assoli18 [71]

Answer:

Its value is 10.

Step-by-step explanation:

Use order of operations,  PEMDAS.

The parentheses are worked out first:-

(5 - 3) X 2 + 6

= 2 X 2 + 6

Now the multiplication:-

= 4 + 6

= 10 (answer).

5 0
4 years ago
How many solutions does the system have?
omeli [17]

Answer:

B. No solutions

Step-by-step explanation:

8x+2y=14

8x+2y=4

These linear equations are in standard form, and the Ax values are the same (8x) and the By values are the same (2y).  The only value that is the different is the C values (14 and 4), which will be the cause of a no solution for this system of equations.

7 0
3 years ago
Read 2 more answers
Damon and Eddie each had an equal amount of money. Each day Damon spent $18 and Eddie spent $24. When Eddie used up all his mone
Zina [86]
D = $18
E = $24
x - $18 = 120
x = $138
6 0
3 years ago
Read 2 more answers
What percent of 8 is 14
seraphim [82]

Answer:

57.14

Step-by-step explanation:

8/14 =x/100

cross multiply

800= 14x

x=57.1428

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which word sentence represents the equation 4y = y + 9 ?
    5·2 answers
  • 8+2(5 - x) = <br> Need help
    15·1 answer
  • 6x^2-5x+3 - (3x^2+8x-4)
    11·2 answers
  • Which ratios are equal to 64 when the scale factor is 8? Select all that apply.
    8·1 answer
  • Solve each by elimination <br> 4x - y = 105<br> x + 7y = -10
    14·1 answer
  • A school has all of the students in grade 8 take a math test. Several samples are taken from the results. Which of the following
    9·1 answer
  • Pablo wants to pour 82.69 grams of salt into a container. So far, he has poured 38.4 grams. How much more salt should Pablo pour
    14·1 answer
  • 2 + 14 + 2 − 12 = -4
    12·1 answer
  • What is the measure of R?<br> 5<br> 68-<br> P<br> R<br> 5
    6·1 answer
  • The growth of a strain of bacteria can be modeled by the function graphed, where the x-values are the time in seconds and the y-
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!