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diamong [38]
3 years ago
12

What is the simplified form of the expression -4xy/3x -3y/4 -4x/3 -4y/3 -3x/4

Mathematics
1 answer:
kati45 [8]3 years ago
4 0

Answer:

The answer is C

Hope this helps

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A soccer team is having a car wash. The team spent $65 on supplies. They earned $335, including tips. How much was the the team'
cestrela7 [59]

Answer:

Answer: $210 profit

Step-by-step explanation:

275-65 =210

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3 years ago
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Express -36/78 as a rational number with numerator 6:
Kruka [31]

Answer:

6/9

Step-by-step explanation:

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A new medical test has been designed to detect the presence of the mysterious Brainlesserian disease. Among those who have the d
astra-53 [7]

Answer:

Step-by-step explanation:

The persons who have diseases = 19%

The persons who do not have diseases = 81%

Probability for the test showing positive = Prob of actual disease and shows positive + Prob of no disease but test shows wrong

= 0.7*0.19+0.04*0.81\\=0.133+0.0324\\=0.1654

Prob that the person actually has the disease given that the test administered to an individual is positive= \frac{0.133}{0.1654} \\=0.0804

30) A    B   C   total

    2x  7x   x      10x

P(A) = 0.2, P(B) = 0.7, P(C) = 0.1

Let D be the event that the product is defective

P(D/A) = 0.032, P(D/B) = 0.034 and P(D/C) = 0.056

Required probability =P(C/D)

= \frac{P(D/C) P(C)}{P(D/A) P(a)+P(D/B) P(B)+P(D/C) P(C)}

by using Bayes theorem for conditional probability

= \frac{0.1*0.056}{0.2*0.032+0.7*0.034+0.1*0.056} \\=\frac{0.0056}{0.0064+0.0238+0.0056} \\\\=0.156425

32) 7 digit phone numbers with repitition including 0 will be

= 10^7

Numbers which have atleast one 7 = total number - numbers which do not have a single 7

= 10^7 -9^7

the probability that a 7-digit phone number contains at least one 7

=\frac{10^7-9^7}{10^7}

3 0
3 years ago
Q.1. What is the sum of 130+125+191?<br><br> A. 335<br><br> B. 456<br><br> C. 446<br><br> D. 426
Leno4ka [110]

Answer:

Step-by-step explanation:

130 + 125 + 191 = 446, so choice (C)

Hope that helps!

6 0
2 years ago
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Solve 12x + 5 = 4x + 37
madam [21]

Step-by-step explanation:

12x-4x=37-5

8x=32

x=32/8

x=4

8 0
3 years ago
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