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3 years ago

Linear functions :( please help!

Mathematics

2 answers:

givi [52]3 years ago

7 0

Answer:

J y=4x+1

Step-by-step explanation:

when looking at the x column i will pick a couple of sets and plug them in to see if they fit and -1×4+1= -3

liraira [26]3 years ago

4 0

The answer to this question is “J”, y=4x+1

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Solve the system by substitution. x = 9y x-5y=20

storchak [24]

Step-by-step explanation:

hope this helps you! have a great day

4 0

3 years ago

Solve for x.

Ivahew [28]

ANSWER

$x=\frac{2-\sqrt{10}} {3}$

or

$x=\frac{\sqrt{10}+2} {3}$

We have

$3x^2-4x-2=0$

Since we cannot factor easily, we complete the square.

Adding 2 to both sides give,

$3x^2-4x=2$

Dividing through by 3 gives

$x^2-\frac{4}{3}x= \frac{2}{3}$

Adding $(-\frac{2}{3})^2$ to both sides gives

$x^2-\frac{4}{3}x+(-\frac{2}{3})^2= \frac{2}{3}+(-\frac{2}{3})^2$

The expression on the Left Hand side is a perfect square.

$(x-\frac{2}{3})^2= \frac{2}{3}+\frac{4}{9}$

$\Rightarrow (x-\frac{2}{3})^2= \frac{10}{9}$

$\Rightarrow (x-\frac{2}{3})=\pm \sqrt{\frac{10}{9}}$

$\Rightarrow (x)=\frac{2}{3} \pm {\frac{\sqrt{10}}{3}$

Splitting the plus or minus sign gives

$x=\frac{2- \sqrt{10}} {3}$

or

$x=\frac{\sqrt{10}+2} {3}$

3 0

3 years ago

Read 2 more answers

8:2 in its simplest form

VMariaS [17]

Answer:

4:1

Step-by-step explanation:

just divide by 2

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3 years ago

If orange cost 12.50 pesos each how much do three dozen oranges cost

GalinKa [24]

Answer:

i guess the answer is 450.

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2 years ago

National polls are often conducted by asking the opinions of a few thousand adults nationwide and using them to infer the opinio

Valentin [98]

Answer:

Sample: few thousand adults

Population: all the adults

Step-by-step explanation:

A sample is a subset of the population, selected randomly.

In this case:

The sample consist of the few thousand adults selected to determine the opinions about the National polls.

The population consist of all the adults belonging to the said nation.

Consider an example about the new President election.

To determine which of the two candidates (say A and B) has a higher probability of winning the President election, the election society took a random sample of voters and asked who they think will be a better president.

The sample selected will be large enough, probably 10% of the population of all voters.

From this study it can be estimated which candidate has the higher chance of winning.

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3 years ago