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
sammy [17]
3 years ago
13

At the bank of a river, by measurement, a = 9 ft., b = 15 ft., c = 12 ft., and d = 7 ft.How long is x?

Mathematics
1 answer:
Orlov [11]3 years ago
7 0

Answer: x is 20

Step-by-step explanation:

This is ratio

a : c = b : x and d : unknown

a : c = 9 : 12 = 3 : 4 which is 9/12

b : x = 15 : x which is 15 / x

So the proportion will be :

3/4 = 15/x

So Cross multiplying

3x = 90

Divide both side by 3

x = 90/3

x = 20

You might be interested in
Graph the following lines and using the graph determine several values of x for which the graph is positive (negative): y=−4x+3
True [87]

Answer:


Step-by-step explanation:

Given line is,

y=-4x+3

when, x=-1 , y=-4(-1)+3=4+3=7

when, x=0 , y=-4(0)+3=0+3=3

when, x=1 , y=-4(1)+3=-4+3=-1

So, we got the points  (-1,7) , (0,3) , (1,-1)

Now, putting the points in the graph and adding them , we will get the graph of given line.

Please check image for the graph.


Now for the second part-

The graph is positive means- it will be above the x-axis, that is y value will be positive.

From the graph we can see that, if x<0 , then y is positive.

So, any value of x which is less than 0 , will give the positive graph here.

6 0
3 years ago
Please, Need Help ASAP!!
Jobisdone [24]

Answer:

I think it's A I'm not sure

6 0
2 years ago
Read 2 more answers
3x^2 - 12x ÷ x-4 what is this simplified
Andreyy89
<span>3<span>x^2</span></span>−<span>16 I think that's the answer. Hope that helps!</span>
8 0
3 years ago
Read 2 more answers
Two pages that are back-to back in this book have 203 as the sum of their page numbers.what are the page numbers?
galben [10]
The answer is 101 and 102.
101 and 102 are back to back and 101+102=203
4 0
3 years ago
19, 12, 3, 6, 18, 20, 4, 4, 8, 12, 16, 20, 10, 1, 7, 8 1. Find the range of the data ​
german

Answer:

The highest observation =20

The lowest observation = 1

Range of the data = 20-1

= 19(ans)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Stefanie bought a package of pencils for $1.75 and some erasers that cost $0.25 each. She paid a total of $4.25 for these items,
    8·1 answer
  • WILL GIVE BRAINLIEST. PLZ HELP. 23points :D
    13·2 answers
  • Kennedy has 8 strawberry boxes that are each filled with strawberries. He eats 5 of
    5·2 answers
  • 8x = 12y and 2y + 10 = 22
    15·1 answer
  • Solve x2 + 4x + 8 = 0.
    11·1 answer
  • Given f(x)=x^2 7 and g(x)=x-4/x. find (g o f)(-1). hint: (g o f)(-1)=g(f(-1))
    10·1 answer
  • Write a real-world situation for 7.50y + 9
    15·1 answer
  • 2. What percent of rolling a 2<br><br><br> 3 probability of getting HH
    8·1 answer
  • I need help with this question​
    7·1 answer
  • This trapezoid-based right prism has a volume of 30 cm", What is the area of the base of the prism?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!