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Irina18 [472]
3 years ago
7

What is the solution for the following equation? 3(a-7)=14-4a​

Mathematics
1 answer:
prohojiy [21]3 years ago
5 0

Answer:

a= 5

Step-by-step explanation:

3 (a-7)= 14-4a -Remove Parentheses

3a-21=14-4a -Move the terms

3a+4a=14+21 -Collect like terms

7a=35 -Divide both sides

a=5 - Solution

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1/2 x + 13 = 9 (x Is Variable)
Elza [17]

Answer:

x= -8

Step-by-step explanation:

1/2x + 13=9

- move 13 to the other side

1/2x= 9-13

-simply 9-13

1/2x= -4

-multiply 2 on both sides

1x=-8

x=-8

3 0
3 years ago
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In China, where many couples were allowed to have only one child, the probability of a baby being a boy was 0.545. Among six ran
wariber [46]

Answer: 0.9738

Step-by-step explanation:

This is solved by the probability distribution formula for random variables where probability of determining random variable X is given by

P(X=r) = nCr * p^r * q^n-r

Where n = number of sample = 6

p = probability of success = 0.545

q = 1-p = 0.455

r = possible outcome from number of sample.

If 6 random births are chosen, Probability that at least 1 of them is a girl = 1 -[probability that none of them is a girl] = 1 - [probability that all 6 kids are boys]

Probability that all 6 kids are boys = 6C6 * 0.545^6 * 0.455^0 = 0.0262

Probability that at least one is a girl = 1 - 0.0262 = 0.9738.

6 0
3 years ago
Which of the following lines has a negative slope? <br> Is it Red<br> Is it Black<br> Is it Blue
Katena32 [7]

Answer:

black line <3

Step-by-step explanation:

the slope is -2 :)

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29, 20, 36, 44, 30, 32, and 40.
tamaranim1 [39]

Answer:

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3 years ago
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Whats answer giving brainliest to first CORRECTTT person
Alex_Xolod [135]

Answer:

C. 4x+12

Step-by-step explanation:

To distribute, multiply 4 and x which gives you 4x and multiply 4x3 which equals 12 and 12 is positive so the answer is 4x+12.

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3 years ago
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