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2 years ago

15

What is the median number of pairs of shoes owned by the children ?

1 answer:

Morgarella [4.7K]2 years ago

7 0

Answer:

3

Step-by-step explanation:

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7 more than a number ?<br><br> A)n+7<br> B)7+n<br> C)7-n

Elza [17]

Answer:

B)7+n

Step-by-step explanation:

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If wandas motherly take-home is $3,000 her fixed monthly expenses are $2,575 and get average monthly variable expenses are $855

anastassius [24]

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1 year ago

How would you write the fraction and mixed number as money amount and as a decimal in terms of dollars -- 65/100 and 1 48/100?

valkas [14]

65/100 = $0.65
1 48/100 = $1.48

7 0

2 years ago

Find the equations of the tangents to the curve y = x²-x-12 at each of the points where the curve crosses the x-axis.

poizon [28]

Step-by-step explanation:

First, find the zeroes of the parabola

${x}^{2} - x - 12$

${x}^{2} - 4x + 3x - 12$

$x(x - 4) + 3(x - 4)$

$(x + 3)(x - 4) = 0$

$x = - 3$

$x - 4 = 0$

$x = 4$

So the zeroes or where the curve crosses the x axis is at 4 and -3.

Now, we take the derivative of the function.

$\frac{d}{dx} ( {x}^{2} - x - 12) = 2x - 1$

Plug in -3, and 4 into the derivative function

$2( - 3) = - 7$

$2(4) - 1 = 7$

So at x=-3, our slope of the tangent line is -7 and must pass through (-3,0). So we use point slope formula.

$y - y _{1} = m(x - x _{1})$

$y - 0 = - 7(x - ( - 3)$

$y = - 7x - 21$

At x=4, our slope of tangent line is 7, and pass through (4,0) so

$y - 0 = 7(x - 4)$

$y = 7x - 28$

So the equations of tangent is

$y = - 7x - 21$

$y = 7x - 28$

6 0

1 year ago

What value of x makes the

loris [4]

Answer:

$x = -12$

Step-by-step explanation:

<u>Step 1: Add 1/4x to both sides</u>

$-\frac{1}{4}x - 12 = x + 3$

$-12 - \frac{1}{4}x + \frac{1}{4}x = x + 3 + \frac{1}{4}x$

$-12 = \frac{5}{4}x + 3$

<u>Step 2: Subtract 3 from both sides</u>

$-12 - 3 = \frac{5}{4}x + 3 - 3$

$-15 = \frac{5}{4}x$

<u>Step 3: Multiply both sides by 4/5</u>

$-15*\frac{4}{5}=\frac{5}{4}x * \frac{4}{5}$

$-12 = x$

Answer: $x = -12$

6 0

2 years ago

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