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
dedylja [7]
3 years ago
14

What is the area of a triangle length 2.5 height 8.75

Mathematics
2 answers:
gregori [183]3 years ago
3 0
Area of a triangle = 0.5 x base x height
                            = 0.5 x 2.5 x 8.75
                            = 10.94 (units squared) 
bekas [8.4K]3 years ago
3 0
My Geometry teacher used to say, 

"My students, ahh. Textbooks. They say, 'My pretty little students, here's a formula! I will give you numbers and you plug it in.' Then he would say, 'I don't like textbooks. I'm a rebel! So, I derive the formula.'" 

He made us derive it. But the formula is this: 1/2 x b x h. Why? The real formula is because two equal triangles are both HALF of a PARALLELOGRAM. 

Parallelogram area formula is b x h, or base x height. So half of that? 
(b x h) / 2, or 1/2 x b x h.

Plug this in. 

Assuming your triangle is equilateral, I plug in 2.5 for the base and 8.75 for the height. 

So, what's 1/2 x 2.5 x 8.75?

It's 10.9375.

Rounded, it's 10.94.

You have it.

Just remember, it's about WHY this formula works.
You might be interested in
write the equation of the line, in standard form, that is perpendicular to y=3x-2 and passes through (-7,2)
34kurt

Answer:

x+3y=-1

Step-by-step explanation:

y=3x-2 so m=3 old slope

the new slope must be -1/3 (opposite reciprocal of the old slope).

y-y0=m*(x-x0)

y-2=-1/3*(x-(-7))

y-2=-1/3x-1/3*7

y-2=-1/3x-7/3

3y-6=-x-7

The standard form for linear equations in two variables is Ax+By=C.

x+3y=6-7

x+3y=-1

8 0
2 years ago
Please help I will give brainliest
Katyanochek1 [597]

Answer:

30 in^2

Step-by-step explanation:

The formula for finding the area of a trapezoid is A=a+b/2 x h

In this case, a=5, b=10, and h=4

When you input those values into the formula and solve for A, you get A=30

Please mark as brainliest ;)

3 0
2 years ago
PLEASE HELP ME AND DONT JOKE AROUND
VladimirAG [237]

Answer:

12

Step-by-step explanation:

Simplify  2+3 to 5.

7+3×  3 /5

Cancel 3

7+5

Simplify.

12

5 0
3 years ago
Read 2 more answers
Simplifying Radicals 2-20
Tatiana [17]
- 18
2- 20
= -18
 
Because you do the same thing just going to end up with a negative.
3 0
3 years ago
Tamir is saving up his money to buy a television that costs $455.65. Right now he has $125.50, and can save $34.00 each week. Ho
Anika [276]

Answer:

10 weeks

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • For what value of x is the expression 2x-1/x+3 not defined
    13·1 answer
  • What is 6,0000×5,0000<br>A.3,925,649,025<br>B.3,000<br>C.200<br>D.345
    13·2 answers
  • Six less than the product of 13 and a number use the variable n to represent the unknown number
    15·1 answer
  • a rectangle has a perimeter of 88cm. if the height is three times the length of the width what are the dimensions of the rectang
    6·1 answer
  • 2/5(a+2b)^2 (if a=3 and b=-4)
    12·1 answer
  • I need help ASAP please
    8·1 answer
  • Name the types of angles shown.
    12·1 answer
  • 18. Noah paid off a loan with a simple interest rate of
    7·1 answer
  • Determine la ecuación de la recta normal a la curva f(x)=ax(bx+a) en el punto de abscisa x=1. Dar como respuesta el intercepto a
    12·1 answer
  • Solve |x + 7| &lt; 6<br> its for homework
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!