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2 years ago

A triangle has area 42 cm squared find the height in centimeters if it is 5 cm shorter than the base

Mathematics

1 answer:

topjm [15]2 years ago

3 0

Base = 12cm
Height = 7cm

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BRAINLEST PLUS 10 PTS Solve for x pls

Anna11 [10]

Answer:

x=39

Step-by-step explanation:

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2 years ago

What is the discount price of the bicycle

quester [9]

Answer:

depends on what the price of the bicycle is and the discount percentage

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2 years ago

A fair coin is flipped twelve times. What is the probability of the coin landing tails up exactly nine times?

seraphim [82]

Answer:

$P\left(E\right)=\frac{55}{1024}$

Step-by-step explanation:

Given that a fair coin is flipped twelve times.

It means the number of possible sequences of heads and tails would be:

2¹² = 4096

We can determine the number of ways that such a sequence could contain exactly 9 tails is the number of ways of choosing 9 out of 12, using the formula

$nCr=\frac{n!}{r!\left(n-r\right)!}$

Plug in n = 12 and r = 9

$=\frac{12!}{9!\left(12-9\right)!}$

$=\frac{12!}{9!\cdot \:3!}$

$=\frac{12\cdot \:11\cdot \:10}{3!}$ ∵ $\frac{12!}{9!}=12\cdot \:11\cdot \:10$

$=\frac{1320}{6}$ ∵ $3!\:=\:3\times 2\times 1=6$

$=220$

Thus, the probability will be:

$P\left(E\right)=\frac{n\left(E\right)}{n\left(S\right)}$

$=\frac{220}{4096}$

$=\frac{55}{1024}$

Thus, the probability of the coin landing tails up exactly nine times will be:

$P\left(E\right)=\frac{55}{1024}$

4 0

2 years ago

5 – m = 1.36 m= Someone please help me

skelet666 [1.2K]

Answer:

$5 - m = 1.36 \\ \: \: \: \: \: \: \: \: \: m = 5 - 1.36 \\ m = 3.64$

8 0

2 years ago

A 1200 b 3200 c 3680 d 5520

anygoal [31]

Answer:

c. 3680

Step-by-step explanation:

In 2010, the population was 8000.

In 2014, it increased by 15%.

Population in 2014 :

= 8000 + 15/100×8000

= 8000 + 1200

= 9200.

Now, 2/5 of the population was age 12 or under.

= 2/5 × 9200

= 2×1840

= 3680

Answer - c) 3680

3 0

2 years ago