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2 years ago

Pls help,its for my sister

Mathematics

1 answer:

dimaraw [331]2 years ago

7 0

Everything about number one is because it's a half of circle so its area = 1/2 ¶r^2 and its perimeter = ¶r

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BD is the angle bisector of

AlexFokin [52]

Note: Let us consider, we need to find the $m\angle ABC$ and $m\angle DBC$ .

Given:

In the given figure, BD is the angle bisector of ABC.

To find:

The $m\angle ABC$ and $m\angle DBC$ .

Solution:

BD is the angle bisector of ABC. So,

$m\angle ABD=m\angle DBC$

$3x=x+20$

$3x-x=20$

$2x=20$

Divide both sides by 2.

$x=\dfrac{20}{2}$

$x=10$

Now,

$m\angle DBC=(x+20)^\circ$

$m\angle DBC=(10+20)^\circ$

$m\angle DBC=30^\circ$

And,

$m\angle ABC=(3x)^\circ+(x+20)^\circ$

$m\angle ABC=(4x+20)^\circ$

$m\angle ABC=(4(10)+20)^\circ$

$m\angle ABC=(40+20)^\circ$

$m\angle ABC=60^\circ$

Therefore, $m\angle DBC=30^\circ,m\angle ABD=30^\circ$ and $m\angle ABC=60^\circ$ .

8 0

2 years ago

Is -0 greater then 0

DENIUS [597]

Answer:

0 is greater than -0

Hope this helps

3 0

3 years ago

Read 2 more answers

Which triangle has no equal sides?

emmasim [6.3K]

Answer:

scalene triangle

Step-by-step explanation:

A scalene triangle has three different angles and none of its sides are equal in length.

8 0

2 years ago

Peter hired a cleaning company to clean his house. The cleaning company charges a fixed fee of $15 plus $17 per hour to clean a

creativ13 [48]

Answer:

5 hours

Equations:

first company: 17x+15

second company: 20x

Proof:

17(5)+15 => 85+15 => 100

20(5) => 100

7 0

2 years ago

Suppose that a fair, 6 sided die is rolled. Let X indicate the event that an odd number is rolled (in other words, X = 1 if an o

choli [55]

Answer:

$\frac{1}{3}$

Step-by-step explanation:

We are given that a fair 6 sided die is rolled.

Let X denotes the event that an odd number

X=1, if an odd number

X=0, if an even number

Let Y indicates the event that 2,3 or 4 is rolled .

Y=0,if 1,5 or 6 rolled

Y=1 , if 2,3 or 4 rolled

We have to find P(X=0,Y=1)

It means we have to find P(2 or 4).

When X=0 and Y=1 It means we get an even number.

P(2 or 4)=P(2)+P(4)= $\frac{1}{6}+\frac{1}{6}=\frac{2}{6}=\frac{1}{3}$

Hence, P(X=0,Y=1)= $\frac{1}{3}$

7 0

2 years ago