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valina [46]
3 years ago
12

Both Marquis and Ava have extensive music collections on their phones. Together they have a total of 4,210 unique songs. If Marq

uis has 320 more unique songs than Ava does, how many of the 4,210 songs on Ava’s phone?
Mathematics
1 answer:
Georgia [21]3 years ago
5 0

Answer:

1765

Step-by-step explanation:

4210÷2= 2105

2105+320=2425

4210-2425=1765

therefore the answer is 1765

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Anna11 [10]

The answer for leading coefficient should be 1.

8 0
3 years ago
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Iq scores are normally distributed with a mean of 100 and a standard deviation of 15 if one person is randomly selected what is
beks73 [17]

probability that the persons IQ falls between 110 and 130 is 0.2286 .

<u>Step-by-step explanation:</u>

Step 1: Sketch the curve.

The probability that 110<X<130 is equal to the blue area under the curve.

Step 2:

Since μ=100 and σ=15 we have:

P ( 110 < X < 130 )=P ( 110−100 < X−μ < 130−100 )

⇒ P ( (110−100)/15< (X−μ)/σ<(130−100)/15)

Since Z = (x−μ)/σ , (110−100)/15 = 0.67 and (130−100)/15 = 2  we have:

P ( 110<X<130 ) = P ( 0.67<Z<2 )

Step 3: Use the standard normal table to conclude that:

P ( 0.67<Z<2 )=0.2286

Therefore, probability that the persons IQ falls between 110 and 130 is 0.2286 .

4 0
3 years ago
Tasha is planning an expansion of a square flower garden in a city park. If each side of the original garden is increased by 7 m
MArishka [77]
<span>The answer is 6 m. To arrive at this answer you solve the following equation: {let x = the original length of the garden) (x+7)^2 = 169 x+7 = 13 x = 13-7 x = 6m</span>
4 0
3 years ago
Find the exact values of cos (3pi/4radians) and sin (3pi/4 Radians)
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Cos (3π/4) can be written as,
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8 0
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Answer:

x = -3/2

Step-by-step explanation:

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1+2+4x = -3

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x = -6/4

x = -3/2

8 0
3 years ago
Read 2 more answers
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