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4 years ago

Number 17... please help!

Mathematics

1 answer:

son4ous [18]4 years ago

4 0

2y2+y−10=0Step 1: Factor left side of equation.(2y+5)(y−2)=0Step 2: Set factors equal to 0.2y+5=0 or y−2=0y=−52 or y=2Answer:y=−52 or y=2

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Write 0.46 repeating as a fraction in simplest form.

bezimeni [28]

Answer:

$\frac{23\\}{50}$

Step-by-step explanation:

0.46 = $\frac{0.46}{1\\}$ ( write 0.46 as a fraction out of 1)

$\frac{0.46}{1} *$ $\frac{100}{100}$ ( multiply to remove the decimal point0

$\frac{46 / 2}{ 100/ 2} =$ $\frac{23}{50}$ ( find GCF of 46 and 100 to reduce to lowest terms gct is 2)

So 0.46 as a repeating fraction is $\frac{23}{50}$

HOPE THIS HELPED

4 0

3 years ago

Which of these strategies would eliminate a variable in the system of equations? { − x + 6 y = 8 7 x − y = − 2 ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ −

PilotLPTM [1.2K]

Answer:

The required solution is $x=\frac{98}{41}$ and $y =\frac{8}{123}$ .

Step-by-step explanation:

Given equations are

-x+6y = -2.......(1)

$\frac87x-y=-2$ .......(2)

First we have to equate the coefficient of y or x. Here we equate the coefficient of y . So equation (2) multiply by 6.

Then the equation (2) becomes

$\frac{8\times 6}{7}x-6y=-2\times6$

$\Rightarrow \frac{48}{7}x-6y=-12$ ........(3)

Since the signs of y are is opposite, so we adding (1) and (2).

$(-x+6y)+ \frac{48}{7}x-6y=-2-12$

$\Rightarrow -x+\frac{48}{7}x=-14$

$\Rightarrow \frac{-7x+48x}{7}=-14$

$\Rightarrow \frac{41x}{7}=-14$

$\Rightarrow x=\frac{-14\times 7}{41}$

$\Rightarrow x=\frac{98}{41}$

Putting the value of equation (1)

$-\frac{98}{41}+6y=-2$

$\Rightarrow 6y =-2+\frac{98}{41}$

$\Rightarrow 6y =\frac{-82+98}{41}$

$\Rightarrow y =\frac{16}{41\times 6}$

$\Rightarrow y =\frac{8}{123}$

The required solution is $x=\frac{98}{41}$ and $y =\frac{8}{123}$

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2 years ago

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navik [9.2K]

Answer:

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Step-by-step explanation:

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3 years ago

A real estate builder wishes to determine how house size is influenced by family income, family size, and education of the head

OlgaM077 [116]

Answer:

see explaination

Step-by-step explanation:

1) Lets form the regression equation from the data results

Size = -1.633+ 0.4485*FamilyIncome + 4.2615*FamilySize - 0.6517*Education

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so education can be removed from the model

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4 years ago