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dusya [7]
3 years ago
14

Which is the graph of Y = log(-x)?

Mathematics
1 answer:
hoa [83]3 years ago
8 0
A++ 123456 -2 -3 -4 1
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If the product of two positive fractions a and b is 15/56, find three pairs of possible values for a and b
Andrews [41]

Answer:

First possible pairs = (3/7)*(5/8) = 15/56

second possible pairs = (3/4)*(5/14) = 15/56

third possible pairs = (1/2)*(15/28) = 15/56

Step-by-step explanation:

According to the question,

a x b = 15/56

three possible pairs will be as follows:

Before proceeding to make possible pairs, we have to know the prime factorization of the numbers -

15 = 1, 3, 5, 15

56 = 1, 2, 4, 7, 8, 14, 28, 56

As we need three possible pairs, we have to check which pairs take us to 15/56. Again, since the fraction is positive, therefore, the fractions will be proper. Therefore, 3/2, or 5/4 will not be counted. Therefore,

First possible pairs = (3/7)*(5/8) = 15/56

second possible pairs = (3/4)*(5/14) = 15/56

third possible pairs = (1/2)*(15/28) = 15/56

fourth possible pairs = (3/8)*(5/7) = 15/56

So, we can get those four possible pairs. Among those, first 3 pairs are different. Therefore, those are possible pairs.

4 0
3 years ago
A math class has three girls and 7 boys in the 7th grade and five girls and five boys in the 8th grade the teacher randomly sele
Anuta_ua [19.1K]

Answer:

7/20

Step-by-step explanation:

Seventh grade: Total = 3 + 7 = 10

Number of boys = 7 boys

Probability of a boy being picked = 7/10

Eighth grade: Total 5 + 5 = 10

Number of boys = 5

Probability 5/10 = 1/2

The probability of the correct outcome = 7/10  *  1/2  = 7 / 20

Answer: 7 / 20

7 0
3 years ago
Evaluate the following expressions if a = 2, b = 3, x = 4, y = 5
vekshin1

Answer:

18

Step-by-step explanation:

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PLS MARK BRAINLIEST

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         ✌ -ZYLYNN JADE ARDENNE

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3 0
3 years ago
Please help! Due soon
sesenic [268]

Answer:

its 2/6

Step-by-step explanation:

7 0
3 years ago
I have to math questions i need help with. If one of the factors x^2+27x+152 is x+8, what is the other factor? and Factor the fo
alexgriva [62]

Answer:

use this m  a  t   h    w  a   y    it will help you i promise

Step-by-step explanation:

3 0
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