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barxatty [35]
2 years ago
15

Find the area

Mathematics
2 answers:
Kitty [74]2 years ago
7 0

Answer: 54 cm^2

Step-by-step explanation:

The area of a triangle is base*height/2.

To find the missing side of this triangle we can use pythagorean theroem. Let the unknown side = x

15^2 = 12^2+x^2

225 = 144+x^2

x^2 = 81

x = 9

Area = BH/2

Area = 9*12/2

Area = 54 cm^2

Ilia_Sergeevich [38]2 years ago
4 0

Answer:

180

Step-by-step explanation:

sorry if im wrong but it should be

15x12=180

thats how we did it

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Can someone please help me with my math problem?
elena-s [515]
The answer to Part A is 2 15/32
8 0
3 years ago
Which pair of ratios makes a proportion?
Nana76 [90]

Answer:

  • D. 1/4 and 9/36

Step-by-step explanation:

If two ratios make a proportion then it can be shown as:

  • a/b = c/d ⇒ ad = bc

Let's verify the answer choices with this method

A. 1/4 and 5/25

  • 1*25 = 4*5
  • 25 = 20, incorrect, not a proportion

B. 1/4 and 7/24

  • 1*24 = 4*7
  • 24 = 28, incorrect, not a proportion

C. 1/4 and 10/48

  • 1*48 = 4*10
  • 48 = 40, incorrect, not a proportion

D. 1/4 and 9/36

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6 0
2 years ago
there are 70 students in the school band. 40% of them are sixth graders, 20 % are seventh graders, and the rest are eight grader
zheka24 [161]

Answer:

28 are 6th

14 and 7th

40% are 8th

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A survey of 500 high school students was taken to determine their favorite chocolate candy. Of the 500 students surveyed, 42 lik
Step2247 [10]

Answer:

Step-by-step explanation:

Universal set

U = 500

The number that likes snickers

n(S) = 42

The number that like Twix.

n(T) = 110

The number that like Reeses

n(R) = 125

n(S n T) = 33

n(T n R) = 62

n(S n R) = 26

n( S n R n T) = 22

Then,

n(S n T) only = n(S n T) - n(S n R n T)

n(S n T) only =33 - 22 = 11

n(T n R) only = n(T n R) - n(S n R n T)

n(T n R) only =62 - 22 = 40

n(S n R) only = n(S n R) - n(S n R n T)

n(S n R) only =26 - 22 = 4.

Also,

n(S) only = n(S) - n(S n R) - n(S n T) only

n(S) only = 42 - 26 - 11 = 5

n(T) only = n(T) - n(T n R) - n(T n S) only

n(T) only = 110 - 62 - 11 = 37

n(R) only = n(R) - n(S n R) - n(R n T) only

n(R) only = 124 - 26 - 40 = 58

Then, to know if some student don't like any of the of chocolate,

Let know the number of students that like the chocolate candy

n(S) + n(T)only + n(T n R)only + n(R) only

42 + 37 + 40 + 58 = 177 students.

Therefore, the total students that like chocolate candy is 177, so those  that does not like any of them are

n(S U R U T)' = U – n(S U R U T)

n(S U R U T) = 500 - 177 = 323.

So, the question is how many student likes at most 2 kinds of these chocolates, this means that they can like exactly 2 or less or even none.

So, this category are

n(2 most) = n(S n T)only + n(R n T)only + n(S n R)only + n(s)only + n(T)only + n(R)only + n(S U R U T)'

n(2 most) = 11 + 40 + 4 + 5 + 37 + 58 + 323

n(2 most) = 478

The correct answer is E.

Check attachment for Venn diagram

5 0
3 years ago
Lin bought 4 bags of apples. Each bag had the same
sashaice [31]

Answer:

I do not see any diagrams. Though she had 32 apples before she ate any, 8 in each bag.

6 0
3 years ago
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