All categories

3 years ago

What is the area of this triangle? please help me.

Mathematics

2 answers:

motikmotik3 years ago

8 0

Answer:

6 units²

Step-by-step explanation:

The area (A) of a triangle is calculated using the formula

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

here b = DE = 3 units and

h is the distance from the vertex F to DE = 4 units, hence

A = $\frac{1}{2}$ × 3 × 4 = 6 units²

olchik [2.2K]3 years ago

5 0

Answer:

Step-by-step explanation:

Area of a triangle: bh/2

4*3/2=6

You might be interested in

A park maintenance person stands 19 m from a circular monument. If you assume her lines of sight form tangents to the monument a

Lunna [17]

Correct answer is A.

$\frac{\alpha}{2}=90^o-17^o=73^o
\\
\\ \alpha=146^o
\\
$

4 0

3 years ago

The radioactive element americium-241 has a half-life of 432 years. How many years will it take a 10 gram mass of americium-241

geniusboy [140]

<h2>Answer: 816 years</h2>

This problem can be solved using the <u>Radioactive Half Life Formula: </u>

<u />

$A=A_{o}.2^{\frac{-t}{h}}$ (1)

Where:

$A=2.7g$ is the final amount of the material

$A_{o}=10g$ is the initial amount of the material

$t$ is the time elapsed (the quantity we are asked to find)

$h=432y$ is the half life of americium-241

Knowing this, let's find $t$ from (1):

$2.7g=(10g).2^{\frac{-t}{432y}}$

$\frac{2.7g}{10g}=2^{\frac{-t}{432y}}$

$0.27g=2^{\frac{-t}{432y}}$

Applying natural logarithm in both sides:

$ln(0.27g)=ln(2^{\frac{-t}{432y}})$

$-1.309=-\frac{t}{432y}ln(2)$

$-t=\frac{(-1.309)(432y)}{0.693}$

<u></u>

<u>Finally:</u>

$t=816y$

3 0

3 years ago

DON'T TROLL ME!!! I KNOW I'M GIVING A LOT OF POINTS BUT THAT DOESN'T MEAN YOU SHOULD TROLL AND TAKE THEM. HOW WOULD YOU FEEL IF

Likurg_2 [28]

Answer:

for me it was d=3.2t+0.6

Step-by-step explanation:

but to find the part where they intersect its (0.75,3)

6 0

3 years ago

Read 2 more answers

WHAT VARIES MORE 6.6 OR 4.3: NO LINKS

Svetllana [295]

Answer:

what exactly do you mean by that?

Step-by-step explanation:

**i promise to go back and provide a real answer** (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧

8 0

2 years ago

Read 2 more answers

What is the solution to the equation below?<br> 1.5 (2x+ 5) +2.5 = 1.5 (-2x + 7)= 0.5

Anarel [89]

Sorry for my writing

7 0

3 years ago