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3 years ago

15

3.76+(y-1/2)/2 need help noww homework

1 answer:

Zepler [3.9K]3 years ago

4 0

Answer:

351+50y/100

Step-by-step explanation:

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Hi, Which of these percentages is closest in value to 7/9

Gnoma [55]

To find a percentage, you need to divide 7 by 9 to find out what 7/9 is.
It turns out to be 0.777 repeating.
To find a percentage, you need to move the decimal place over by two to the right, so 7/9 is equals to 77.77%.
If you round that, then 77.77% is closest to 78%.

Hope this helps!

4 0

3 years ago

Find the equation of the line with slope −5 and that contains the point (−9,−5). Write the equation in the form y=mx+b and ident

Elina [12.6K]

Answer & Step-by-step explanation:

Slope-intercept form:

$y=mx+b$

m is the slope and b is the y-intercept. Insert the given slope:

$y=-5x+b$

To find the y-intercept, take the given coordinate point and insert:

$(-9_{x},-5_{y})\\\\-5=-5(-9)+b$

Solve for b:

Simplify multiplication:

$-5=45+b$

Subtract 45 from both sides:

$-50=b\\\\b=-50$

The y-intercept is -50. Insert:

$y=-5x-50$

$m=-5\\b=-50$

Use the slope formula for when you have two points:

$\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{rise}{run}$

The slope is the change in the y-axis over the change in the x-axis, or rise over run. Insert the points:

$(2_{x1},4_{y1})\\(10_{x2},2_{y2})$

$\frac{2-4}{10-2}=\frac{-2}{8}=-\frac{2}{8}=-\frac{1}{4}$

The slope is $-\frac{1}{4}$ . Insert:

$y=-\frac{1}{4}x+b$

Now follow the steps from the last problem to find the y-intercept. Choose a point and insert into the equation:

$(2_{x},4_{y})\\\\4=-\frac{1}{4}(2)+b$

Solve for b:

Simplify multiplication:

$-\frac{1}{4}*\frac{2}{1}=-\frac{2}{4}=-\frac{1}{2}$

Re-insert:

$4=-\frac{1}{2} +b$

Subtract b from both sides:

$4-b=-\frac{1}{2} +b-b\\\\4-b=-\frac{1}{2}$

Subtract 4 from both sides:

$4-4-b=-\frac{1}{2}-4\\\\-b=-\frac{1}{2}-4$

Simplify subtraction:

$-\frac{1}{2}-4=-\frac{1}{2} -\frac{4}{1} =-\frac{1}{2} -\frac{8}{2} \\\\-\frac{1}{2} -\frac{8}{2}=-\frac{9}{2}$

Re-insert:

$-b=-\frac{9}{2}$

Divide both sides by -1 to make the variable positive (can be seen as -1b):

$b=\frac{9}{2}$

The y-intercept is $\frac{9}{2}$ .

Write the equation:

$y=-\frac{1}{4}x+\frac{9}{2}$

:Done

7 0

3 years ago

Can someone please answer this, ill give you brainliest Would be very appreciated.

Genrish500 [490]

Answer:

x-intercept: (4, 0), (-5, 0)

y-intercept: (0, -20)

Explanation:

x² + x - 20

x² + 5x -4x -20

x(x+ 5) -4(x +5)

(x-4)(x + 5)

Their x-intercept: (at x intercept, y will be 0)

(x-4)(x + 5) = 0

x = 4, x = -5

Their y intercept: (at y intercept, x will be 0)

y = (x-4)(x + 5)

y = (0-4)(0 + 5)

y = -20

7 0

2 years ago

Read 2 more answers

Mason has 22 cookies. He eats 2 of his cookies. Then Mason gives an equal 1

Helen [10]

Answer:

he starts with 22 eats 2

22-2=20

he can give each friend 4 cookies because 4*5 is 20

7 0

3 years ago

Please show work having a brain fart

Masteriza [31]

$\bf 10c^6(8c^2+3c)\implies 10c^6\cdot 8c^2+10c^6\cdot 3c^1
\\\\\\
10\cdot 8c^6c^2+10\cdot 3+c^6c^1\implies 80c^{6+2}+30c^{6+1}\implies 80c^8+30c^7$

8 0

3 years ago