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3 years ago

Ipotenuza un triunghi dreptunghi isoscel este de 20 dm .Calculați aria

1 answer:

7 0

A way of finding area of an isosceles triangle is by using the formula A=1/2bh, plug in the base and height, and solve from there.<span />

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A rectangle has an area of 72 square inches. The width of the rectangle is 6 inches. What is the length of the rectangle?

inn [45]

Answer:

Step-by-step explanation:

3 0

3 years ago

Thethree sides of a triangle measure 810 and 12 units is this a right angle?

Alja [10]

Answer:

The given triangle is NOT A RIGHT ANGLED TRIANGLE.

Step-by-step explanation:

Here, the three given sides of the triangle are:

8 units, 10 units and 12 units

Now, for any triangle to be a right angle:

by the PYTHAGORAS THEOREM:

$(Base)^2 + (Perpendicular)^2 = (Hypotenuse)^2$

The longest of all sides id the hypotenuse.

⇒ H = 12 units

Let us assume, B = 8 units, P = 10 units

Now, here checking the condition:

$(8)^2 + (10)^2 = 64 + 100 = 164 \neq (12)^2 = 144\\\implies (B)^2 + (P)^2 \neq (H)^2$

Hence, the given triangle is NOT A RIGHT ANGLED TRIANGLE.

4 0

3 years ago

Simplify: 6 ÷ 3 + 3^2 · 4 − 2

Vladimir79 [104]

33/8 < exact form
4.125 < decimal form
4 1/8 < mixed number form

6 0

3 years ago

Read 2 more answers

The number of students spent time useing electronic devices is ? Times the number of hours spent playing sports

Eddi Din [679]

36 divided by 12 would be 3. Your answer is 3.

3 0

2 years ago

If x+y=5,then what is the value of x3+y3+15xy

a_sh-v [17]

Answer:

125

Step-by-step explanation:

x + y = 5

We need to have x^3 and y^3 in the expression, so cube both sides.

(x + y)^3 = 5^3

Expand the left side.

(x + y)(x + y)^2 = 125

(x + y)(x^2 + 2xy + y^2) = 125

x^3 + 2x^2y + xy^2 + x^2y + 2xy^2 + y^3 = 125

x^3 + 3x^2y + 3xy^2 + y^3 = 125

Now we need to separate x^3 + y^3.

x^3 + y^3 + 3x^2y + 3xy^2 = 125

We need to turn 3x^2y + 3xy^2 into 15xy.

Factor the GCF, 3xy, out of 3x^2y + 3xy^2.

x^3 + y^3 + 3xy(x + y) = 125

We know that x + y = 5, so substitute x + y with 5.

x^3 + y^3 + 3xy(5) = 125

x^3 + y^3 + 15xy = 125

Answer: 125

5 0

3 years ago