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Strike441 [17]
3 years ago
5

10% of the students in a school like the color purple. 162 students don't like the color purple. How many students are in the sc

hool?
Mathematics
1 answer:
egoroff_w [7]3 years ago
5 0

Answer:

There are 180 students at the school

Step-by-step explanation:

If 10% of the students like the color purple, then 100-10 = 90% do not like the color purple.

Students * percentage that do not like = students that do not like

students * 90% = 162

Change to decimal form

students *.90 = 162

Divide each side by .90

students *.90/.90 = 162/.90

students = 180

There are 180 students at the school

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One movie ticket costs $12
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3 years ago
What is the perimeter of a square whose diagonal is 3 square root 2? Show all work on how you got your answer
Alika [10]

Answer:

12

Step-by-step explanation:

Given: Diagonal of square= 3\sqrt{2}

To find the perimeter of square, we need to find the length of sides of square.

∴ Using the formula of diagonal to find side of square.

Formula; Diagonal= s\sqrt{2}

Where, s is side of square.

⇒ 3\sqrt{2} = s\sqrt{2}

Dividing both side by √2

⇒s= \frac{3\sqrt{2} }{\sqrt{2} }

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4 years ago
Determine whether or not 630 is a triangular number. start with the formula t n = n ( n + 1 ) 2 and then use the quadratic formu
ziro4ka [17]
Triangular sequence = n(n + 1)/2

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n² + n = 1260

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By trial an error note that 1260 = 35 * 36

n² + n - 1260 = 0

Replace n with 36n - 35n

n² + 36n - 35n - 1260 = 0

n(n + 36) - 35(n + 36) = 0

(n + 36)(n - 35) = 0

n + 36 = 0   or   n - 35 = 0

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n = 35 is valid.

Since n is a positive whole number, that means 630 is a triangular number.

So the answer is True.
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3 years ago
Given the formula k = Lmn what is the formula for m
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