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egoroff_w [7]
2 years ago
11

Ellen has 25 hair clips. 7 of them were blue and the rest are purple. What percentage is blue and what percentage is purple?

Mathematics
1 answer:
galina1969 [7]2 years ago
7 0

Answer:

тнє ρє¢єитαgє σf вℓυє ιѕ:28%

тнє ρєя¢єитαgє σf ρυяρℓє ιѕ:72%

Step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт!!!!!!

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Plz help me there are 4 questions
Nutka1998 [239]

Answer:

um yes no maybe and I'll think about it ;)

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3 years ago
Which relationship describes angles 1 and 2?
vaieri [72.5K]

Answer:

do u got a picture by chance

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
White - 20 marbles
DochEvi [55]

Answer: d

Step-by-step explanation:

The probability of not being purple is the probability of the three other colors. Suppose the number of purple marbles is x. Then we have 20+30+40+x = 90 + x marbles. Then the probability of not being purple is 90/(90+x). If this fraction can have a lowest term for some value of x, then the numerator of this lowest term must be a factor of 90.

Checking through the options, only option D has a non-factor of 90 as its numerator.

8 0
3 years ago
Help me please this is for a math test. <br> Thank you
zubka84 [21]

Answer:

x + 3y = -12

Step-by-step explanation:

y = mx + b

m is the slope = rise / run:

rise = 1

run = 3

the line is downhill so its negative

m = - 1 / 3

b is the y intercept which is when the line cross over the y axis: - 4

y = - 1/3x - 4

multiply both sides by 3

3y = -1x - 12

add x to both sides

x + 3y = -12

7 0
1 year ago
What does a irrational number look like
julia-pushkina [17]

A irrational number is a number that can't be expressed as a ratio of two whole numbers. That's it.

For examples (in increasing order of difficulty)

1 is a rational number because it is 1/1

0.75 is a rational number because it is equal to 3/4

2.333... (infinite number of digits, all equal to three) is rational because it is equal to 7/3.

sqrt(2) is not a rational number. This is not completely trivial to show but there are some relatively simple proofs of this fact. It's been known since the greek.

pi is irrational. This is much more complicated and is a result from 19th century.

As you see, there is absolutely no mention of the digits in the definition or in the proofs I presented.

Now the result that you probably hear about and wanted to remember (slightly incorrectly) is that a number is rational if and only if its decimal expansion is eventually periodic. What does it mean ?

Take, 5/700 and write it in decimal expansion. It is 0.0057142857142857.. As you can see the pattern "571428" is repeating in the the digits. That's what it means to have an eventually periodic decimal expansion. The length of the pattern can be anything, but as long as there is a repeating pattern, the number is rational and vice versa.

As a consequence, sqrt(2) does not have a periodic decimal expansion. So it has an infinite number of digits but moreover, the digits do not form any easy repeating pattern.

5 0
2 years ago
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