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
kompoz [17]
3 years ago
14

solve this word problem leading to quadratic equation: the area of a rectangle is 60cm². The length is 11cm more than the width.

Find the width.​
Mathematics
1 answer:
morpeh [17]3 years ago
8 0

Answer:

Step-by-step explanation:

let : x The length and y the width you have this system :

xy =60....(1)

x = y+10...(2)

put the value for x in (1):  (y+10)y =60

the quadratic equation is : y² +10y - 60 = 0

Δ =b² - 4ac        a = 1        b= 10      c= - 60

Δ =10² - 4(1)(-60) = 324 =18²

y 1 = (-10-18)/2 negatif...... refused

y 2 = (-10+18)/2 =4

the width is 4

You might be interested in
What is the value of x? 6 8 10 12
oee [108]

Answer:

Its 8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find the gradient of the line segment between points (8,6) and (10,14)
fenix001 [56]

Answer: 4

Step-by-step explanation:

3 0
2 years ago
C)PLEASE MAN PEOPLE ARE USING ME FOR POINTS
UNO [17]

The measures of spread include the range, quartiles and the interquartile range, variance and standard deviation. Let's consider each one by one.

<u>Interquartile Range: </u>

Given the Data -> First Quartile = 2, Third Quartile = 5

Interquartile Range = 5 - 2 = 3

<u>Range:</u> 8 - 1 = 7

<u>Variance: </u>

We start by determining the mean,

\:1+\:2+\:3+\:3+\:3+\:5+\:8 / 7 = 3.57

n = number of numbers in the set

Solving for the sum of squares is a long process, so I will skip over that portion and go right into solving for the variance.

\sum _{i=1}^n\frac{\left(x_i-\bar{x}\right)^2}{n-1},\\\\=> SS/n - 1\\\\=> 31.714/7 - 1\\=> 5.28571

5.3

<u>Standard Deviation</u>

We take the square root of the variance,

\sqrt{5.28571} = 2.29906

2.3

If you are not familiar with variance and standard deviation, just leave it.

3 0
3 years ago
Read 2 more answers
I don't understand the concept of how to fine the answer ??
igor_vitrenko [27]
You need to find out how many pints are in 2,4,6,8 quarts. by the way 1 quart equals 2 pints. so to start you off. 2 quarts would be 4 pints and so on
4 0
3 years ago
1/3 of students at a school are boys. If there are 600 students at the school, how many are girls?
Temka [501]

Answer:

200 students are boys and rest of 400 are girls

Step-by-step explanation:

Given that:

Total students = 300

1/3 students of total are boys

so.

Boys = 1/3(600)

Boys = 200

For finding number of girls:

Girls = total - boys

Girls = 600 - 200

Girls = 400

i hope it will help you!

8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the slope and write an equation of the line which passes through the points. (−3, 9) and (−3, −5)
    13·1 answer
  • Can someone please help me out with these 2 problem thanks
    12·1 answer
  • Use the distance formula to find the distance between (−8, 2.5) and (0, −4.5). 1. Substitute coordinates: 2. Simplify parenthese
    5·2 answers
  • Hugo the mountain goat has scaled 350 feet of mountains and hills on his travels. He has climed 95 feet of hill and 3 mountain p
    5·1 answer
  • Which of the following is the algebraic expression that best describes the sequence 3, 9, 27, 81, 243, …?
    15·2 answers
  • Which two whole numbers does the 55 fall between?
    14·2 answers
  • Can someone help me out with 1-5 pls!?
    15·1 answer
  • What is the measure of n?
    13·1 answer
  • Jamir buys a Snickers bar that weighs 16.5 ounces. He takes 6 bites. How many ounces are in each bite?
    15·2 answers
  • The area of a circle is 88.44 cm² find the length of the radius rounded to 2 DP
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!