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2 years ago

Find area of triangle .. help me please!

Mathematics

2 answers:

Zinaida [17]2 years ago

3 0

Answer:

12 x 6 = 72, 72 divided by 2 ( x 1/2) = 36 yd^2

Formula of a triangle:

BH x 1/2

In this case 12 is your base and 6 is your height.

Anastaziya [24]2 years ago

3 0

Answer:

A = 36 yd²

Step-by-step explanation:

The area (A) of the triangle is calculated as

A = $\frac{1}{2}$ bh ( b is the base and h the perpendicular height )

Here b = 12 and h = 6 , then

A = $\frac{1}{2}$ × 12 × 6 = 6 × 6 = 36 yd²

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The perimeter of a rectangle is 68 cm. The length is 4 cm more than its

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Answer:

Step-by-step explanation:

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3 years ago

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What is the zero in the quadratic function f(x)= 9x^2-54x-19?

Alex17521 [72]

Answer:

6.33... and 0.333...

Step-by-step explanation:

The quadratic formula is

$x=\frac{-b+\sqrt{b^2-4ac} }{2a}$ .

It is important because while some quadratics are factorable and can be solved not all are. The formula will solve all quadratic equations and can also give both real and imaginary solutions. Using the formula will require less work than finding the factors if factorable. We will substitute a=9, b=-54 and c=-19.

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\x=\frac{-(-54)+/-\sqrt{(-54)^2-4(9)(-19)} }{2(9)}\\x=\frac{54+/-\sqrt{2916+684} }{18}$

We will now solve for the plus and the minus.

The plus,,,

$x=\frac{54+\sqrt{3600}}{18}\\x=\frac{54+60}{18}\\x=\frac{114}{18}\\x=6.3$

and the minus...

$x=\frac{54-\sqrt{3600}}{18}\\x=\frac{54-60}{18}\\x=\frac{-6}{18}\\x=-0.333...$

8 0

3 years ago

Rewrite the expression in the form 9^n<br> (9^3) (9^12)

BartSMP [9]

Answer:

${9}^{15}$

Step-by-step explanation:

$( {9}^{3} ) \times ( {9}^{12} ) = 9 {}^{3 + 12} = {9}^{15} \\$

5 0

3 years ago

Can someone help me with this please?

11111nata11111 [884]

The perimeter is
$2(2z+3z-3)=44$
$\Rightarrow 2(5z-3)=44$
$\Rightarrow 10z-6=44$
$\Rightarrow 10z=50$
$\Rightarrow z=5$

The length of AB is
$3z-3=3(5)-3=15-3=12$

6 0

2 years ago

EASY POINTS:

iVinArrow [24]

Answer: -750ft

Step-by-step explanation: -450+-300=-750

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2 years ago

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