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3 years ago

What is the value of a in the equation 5a - 10a = 45 when b = 3

Mathematics

1 answer:

Sloan [31]3 years ago

4 0

Answer:

x=-9

Step-by-step explanation:

B is unnecessary here, so we can ignore it. The first thing we do in this equation is simplify by adding like terms. 5a-10a=-5a. So, the equation is now -5a=45. To solve a, we need it by itself. To do that, we undo the multiplication by diving both sides of the equation by -5. 45 divided by -5 is -9, and then we have x=-9.

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3 years ago

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Sphinxa [80]

Answer:

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3 years ago

In testing the lethal concentration of a chemical found in polluted water. it is found that a certain concentration will kill 20

sasho [114]

Answer:

a) 0.1091

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Step-by-step explanation:

X = the number of fish out of 20 that die after 24 hours

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X~ Binomial (n= 20, p =0.20)

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Similarly we can find out

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7 0

3 years ago

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2 years ago

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sergey [27]

Answer:

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Step-by-step explanation:

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3 years ago