3 years ago

What is the x-intercept for the equation: 3x + by = 18? *

Mathematics

1 answer:

Zielflug [23.3K]3 years ago

8 0

I’m going to help u with this question but what do they mean by “by” could u explain?

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Vinvika [58]

Answer:

Step-by-step explanation:

4+6 = 10

10+7 = 17

17+2 = 19

19+9 = 28

28+2 = 30

30+9 = 39

39+3 = 42

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4 years ago

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Machine A can complete a certain job in x hours. Machine B can complete the same job in y hours. If A and B work together at the

scZoUnD [109]

Answer:

$\frac{y}{x+y}$

Step-by-step explanation:

The required answer is the rate at which Machine A works when the two machines are combined.

Note: the rate of doing work is express as

$rate=\frac{1}{time taken} \\$

Hence we can conclude that Machine A working rate is

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$\frac{1}{x}+\frac{1}{y}\\\frac{xy}{x+y}\\$

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Hence the fraction of work done by A is expressed as

$\frac{1}{x}*combine working rate$

$\frac{1}{x}*\frac{xy}{x+y}\\\frac{y}{x+y} \\$

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3 years ago

Which statement is true? A. Point estimates are used to make inferences about population parameters. B. When we use the populati

SCORPION-xisa [38]

Answer:

the answer is d

Step-by-step explanation:

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False. To find C, we can use the equation:

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c = approximately 20.40

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4 years ago