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
Fynjy0 [20]
3 years ago
12

The height of a triangle is 4 ft less than the base x. The area is 126 ft2. Find the dimensions of the triangle.

Mathematics
1 answer:
valina [46]3 years ago
7 0

Answer:

Base = x = 18ft

Height = x - 4 = 14ft

Step-by-step explanation:

The formula for the area of A the triangle is given by the following equation:

1) A = (base * heigth)/(2)

From this problem, we know that

base = x and that the height is 4ft less than the base, so height = base - 4 = x - 4.

We also know that the area is 126ft², so A = 126 ft². Now we can replace these informations in equation 1).

126 = (x(x-4))/2

x² - 4x = 252

x² -4x - 252 = 0

The roots of this equation are x = 18 or x = -14. But we know that a triangle cannot have negative dimensions, so we use x = 18.

The base is x, so base = 18ft.

Height is 4ft less than the base, so height equals 18-4 = 14ft

You might be interested in
A special type of password consists of 3 different letters of the alphabet, and the two different numbers, where each letter and
Phoenix [80]

Answer:

There can be 14,040,000 different passwords

Step-by-step explanation:

Number of permutations to order 3 letters and 2 numbers (total 5)

(AAANN, AANNA,AANAN,...)

= 5! / (3! 2!)

= 120 / (6*2)

= 10

For each permutation, the three distinct (English) letters can be arranged in

26!/(26-3)! = 26!/23! = 26*25*24 = 15600 ways

For each permutation, the two distinct digits can be arranged in

10!/(10-2)! = 10!/8! = 10*9 = 90 ways.

So the total number of distinct passwords is the product of all three permutations,

N = 10 * 15600 * 90 = 14,040,000

7 0
3 years ago
What goes in water black and comes red?
NNADVOKAT [17]

Answer:lobster

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I NEED HELP I’ve been stuck on this for a while now and I don’t get it I tried answering this question many times but I can’t ca
Monica [59]
Substitute each x and the respecting y to the equation
3 0
3 years ago
A paper cup holds a volume of 6 fluid ounces. Is the volume of 6 paper cups greater than 5 cups?
joja [24]

Answer:

No

Step-by-step explanation

8 oz per cup meaning 40oz in 5 paper cups

6 oz per paper cup meaning 36 oz in 6 paper cups

4 0
3 years ago
In a pen of goats and chickens, there are 40 heads and 150 feet. How many goats and chickens are in the pen?
s2008m [1.1K]

Hey there!!

A chicken has 1 head and 2 feet . A goat has 1 head and 4 feet

For heads, total = 40

Let us take the number of chickens as ' x ' and goats as ' y '

x + y = 40 ------------- ( 1 )

2x + 4y = 150 ----------- ( 2 )

Multiply the first equation with 2

2x + 2y = 80

2x + 4y = 150

Subtract the first equation from the first

2y = 70

y = 35

Number of goats = 35

substitute this in other equation

x + y = 40

x + 35 = 40

x = 5

Number of chickens are 4

Hope it helps!

6 0
3 years ago
Other questions:
  • The area of a square carpet tile is 900 square centimeters. What is the length of one edge of the tile in centimeters
    8·1 answer
  • A circle fountain has a radius of 9.4 feet . What's the fountains diamiter
    10·1 answer
  • Please help find a formula of the function
    9·1 answer
  • Can you please help me with the problem in the image below?
    12·1 answer
  • 2(1^2-1)+3 <br> what is the simplified form
    11·1 answer
  • A commercial airline makes a flight each day from New York to Paris, France. The aircraft seats 524 passengers and serves 2 meal
    15·1 answer
  • A container holds six red marbles and four green marbles. You select two marbles from the container (without replacement) what i
    13·1 answer
  • Identify the domain of the function shown in the graph.
    10·1 answer
  • A post 8 feet tall casts a shadow 12 feet long at the same time that a flagpole casts a shadow 96 feet long, how tall is the fla
    7·2 answers
  • Write the standard number.<br><br>3.6 * 10^-6​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!