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3 years ago

Which point does the line with equation y+4=3(x-7) pass through?

1 answer:

5 0

y+4=3(x-7)
y + 4 = 3x - 21
y = 3x - 21 -4
y = 3x - 25

when x = 7
y = 3(7) - 25
y = -4
Therefore (7, -4) pass through this equation

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If <img src="https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7B4%7D%20%3D%20%5Cfrac%7Bb%7D%7B7%7D" id="TexFormula1" title="\frac{a}{4} =

tamaranim1 [39]

Answer:

Step-by-step explanation:

$\frac{a}{4}=\frac{b}{7}\\a=\frac{4b}{7} \\\frac{a-b}{b} =\frac{\frac{4b}{7}-b }{b} \\=\frac{4b-7b}{7b}\\ =\frac{-3b}{7b}\\ =\frac{-3}{7}$

6 0

3 years ago

What is the value of m, if the equation my2+2y−4=0 has exactly one root?

stich3 [128]

Answer:

$m=\frac{-1}{4}$

Step-by-step explanation:

A quadratic equation has one root if the discriminant is 0.

That is we need $b^2-4ac=0$ for this particular question.

Compare the following to find $a,b, \text{ and } c$ :

$ax^2+bx+c=0$

$my^2+2y-4=0$

The variable $x$ is representative of the variable $y$ here.

$a=m$

$b=2$

$c=-4$

Plug in into $b^2-4ac=0$ :

$(2)^2-4(m)(-4)=0$

$4+16m=0$

Subtract 4 on both sides:

$16m=-4$

Divide both sides by 16:

$m=\frac{-4}{16}$

Reduce:

$m=\frac{-1}{4}$

6 0

3 years ago

Read 2 more answers

Which expression is rational? 6.27316543222718… square root of 2 square root of 14. square root of 49

iogann1982 [59]

A rational number is any number that can be expressed as the quotient or fraction. It is also a number that does not repeat and/or go on forever (ex. pi or 3.1415926535)

Soo, the rational number is
the √49

√49 = 7 7 is a rational number, also a whole number as well, how bout that.

8 0

4 years ago

Read 2 more answers

A suit is on sale for 29% off. the sale price is $568. what is the regular price?

Eduardwww [97]

569.65...assuming that your rounding up.

I forgot to move the decimal 4 spaces.

to get the answer multiply 568.00
X .29
_________
1.6472

round 1.647 to 1.65 then add that to 568.00

3 0

3 years ago

Enter the number that goes beneath the radical symbol

Lunna [17]

Answer:

185

Step-by-step explanation:

It seems like you're using the Pythagorean theorem, which would mean that b is equal to $\sqrt{11^2 -8^2}$ , which is equal to $\sqrt{185}$ . The number beneath the radical symbol is 185.

3 0

3 years ago