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olasank [31]
3 years ago
15

I don’t understand pls help!!

Mathematics
1 answer:
mezya [45]3 years ago
3 0

Answer:

7.9 m

Step-by-step explanation:

Use the Pythagorean theorem: a²+b²=c²

This formula can be used to solve a side of any right (90°) triangle.

c² is the length of the hypotenuse (the diagonal side of the triangle, opposite to the 90° angle)

So, c = 32m.

Sides a and b are the legs of the triangle, but we only know one side. Plug numbers into the formula:

31² + b² = 32²

961 + b² = 1024 Subtract 961 from both sides to get b² by itself.

b² = 63

√b² = √63  Square root both sides to get b by itself.

b = 7.93725

Answer is 7.9 meters, rounded to tenths place

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At Prairieview Middle School, 100 students participate in at least one of three after-school clubs: soccer club, art club, and g
Tresset [83]

Answer:

17

Step-by-step explanation:

Number of students in soccer club, n(S) = 50

Number of students in Art club, n(A) = 53

Number of students in Gaming club, n(G)

n(S \cup A\cup G) = 100

n(S \cap A\cap G) = 9

n(S \cap A) = 20

n(A \cap G) = 35

n(G \cap S) = 29

Formula:

n ( A ∪ B ∪ C ) =  n(A) + n(B) + n(C) – n ( A ∩ B ) – n(B ∩ C) – n (A ∩ C) + n( A ∩ B ∩ C )

Putting the values:

100 = 50 + 53 + n(G) - 20 - 35 - 29 + 9

100 = 112 + n(G) - 84

n(G) = 72

Number of students in gaming club only = n(G) - n(G \cap S) - n(A \cap G) + n(S \cap A\cap G)

= 72 - 35 - 29 + 9

= <em>17</em>

6 0
3 years ago
Math help please help... ive been stuck on this, thank you so much !!!!!
mr_godi [17]

Answer: (-3,4) and (9,20)

I think these two points will make the answer you have been looking for.

3 0
3 years ago
david used 2 1/4 feet of cloth to make a shirt. he also used 3 1/3 feet to make a scarf. which expression could used to correctl
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C. 2+3 = 5
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3 years ago
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3 0
3 years ago
Timothy has a savings account that he started five years ago to begin saving for college. The
torisob [31]

Answer:

A. $1500.00

Step-by-step explanation:

Assuming this is a simple interest savings account.

<u>Simple interest formula</u>

I = Prt

where:

  • I = total interest
  • P = principal amount
  • r = interest rate (in decimal form)
  • t = time (in years)

Given:

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  • t = 5 years

Substitute the given values into the formula and solve for P:

⇒ I = Prt

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⇒ 225 = P(0.15)

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Therefore, Timothy started the account with $1500.00.

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