All categories

2 years ago

Help Me! Fake Answers will be reported. How many triangles are there in this picture?

Mathematics

1 answer:

vaieri [72.5K]2 years ago

8 0

Im sorry if you get this wrong but im going with 14 only because i did this question with my class in school and a boy said 14 and got it right.

You might be interested in

Solve for w.<br> 2w=12-4w<br> Simplify your answer as much as possible.

aev [14]

So we have an equation:
2w=12-4w
Firstly, let's simplify, and divide all terms by 2:
w=6-2w
Now, we add 2w over to the other side:
3w=6
And finally, we divide both sides by 3:
w=2
Hope this helps!

6 0

3 years ago

Suppose we have an unfair coin that its head is twice as likely to occur as its tail. a)If the coin is flipped 3 times, what is

Alenkinab [10]

Answer: a) 0.2222, b) 0.3292, c) 0.1111

Step-by-step explanation:

Since we have given that

Let the probability of getting head be p.

Since, its head is twice as likely to occur as its tail.

$p+\dfrac{p}{2}=1\\\\\dfrac{3p}{2}=1\\\\p=\dfrac{2}{3}$

a)If the coin is flipped 3 times, what is the probability of getting exactly 1 head?

So, here, n = 3

$p=\dfrac{2}{3}$

$q=\dfrac{1}{3}$

Now,

$P(X=1)=^3C_1(\dfrac{2}{3})^1(\dfrac{1}{3})^2=0.2222$

b)If the coin is flipped 5 times, what is the probability of getting exactly 2 tails?

2 tails means 3 heads.

So, it becomes,

$P(X=3)=^5C_3(\dfrac{2}{3})^3(\dfrac{1}{3})^2=0.3292$

c)If the coin is flipped 4 times, what is the probability of getting at least 3 tails?

$P(X\leq 1)=\sum _{x=0}^1^4C_x(\dfrac{2}{3}^x(\dfrac{1}{3})^{4-x}=0.1111$

Hence, a) 0.2222, b) 0.3292, c) 0.1111

8 0

3 years ago

Jose purchased 5.5 feet of rope to hang a planter on the back porch the planter required a set of 3 ropes measuring 18 inches ea

Licemer1 [7]

C is the best choice

3 0

3 years ago

Anna bought a sweater at 40% off the original price. If she paid $12, what was the original price of the sweater?

Snezhnost [94]

Answer:

The original cost was 20 dollars.

Step-by-step explanation:

$12 represents 60% of the original price.

Set up a proportion

60/100 = 12

100% = x

Cross multiply Reduce 100/100 to 1

60/100 * x = 12 * 100/100

Multiply by 100

60/ 100 * x = 12

Divide by 60

60x = 12*100

60x = 1200

60x/60 = 1200/60

x = 20 dollars.

3 0

3 years ago

Read 2 more answers

THIS IS IREADY PLEASE HELP RIGHT ANSWER (Only)

k0ka [10]

Answer Bike trail

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers