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2 years ago

Solve for the formula for the indicated variable. Solve A=1/2bh for b.

1 answer:

5 0

B = 2A/h

The way you would get this is first by clearing the fraction. So in order to clear the fraction, you have to multiply the equation by the denominator.

2(A = 1/2bh)

2A = 1bh

2A = bh

Then you have to isolate the variable. So you'd divide bh by h in order to get b by itself. So you'd end up with:

2A/h = bh/h

2A/h = b

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In indirect variation if y = 5 and x = 10, what is the value of k (the constant)?

Andre45 [30]

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4 0

2 years ago

a manufacturer has determined that if his company sells x items per day then their profit is given by P=-x^2+ 700 x-10000 euros.

Radda [10]

Answer:

Step-by-step explanation:

To find the minimum amount of items, x, that need to be sold for the manufacturer to make a profit, we can use the quadratic formula

$x = \frac{-b+\sqrt{b^{2}-4ac } }{2a}; x= \frac{-b-\sqrt{b^{2}-4ac } }{2a}$

$x= \frac{-700+\sqrt{700^{2}-4(a)(-10000) } }{2(1)}; x= \frac{-700-\sqrt{700^{2}-4(a)(-10000) } }{2(1)}$

$x= \frac{-700+\sqrt{530000} }{2}; x= \frac{-700-\sqrt{530000} }{2}$

$x=\frac{-700+100\sqrt{53} }{2}; x=\frac{-700-100\sqrt{53} }{2};$

$x=-350 + 50\sqrt53 = 14.005; x = -350 - 50\sqrt53 = -714.005$

In context of the problem, we can only rely on the positive value, as the negative value would lead to a loss of profit.

$(-714.005)^2+700(-714.005)-10000=-0.360$

Furthermore, we must round to the nearest whole number, as you cannot make part of an item.

Lastly, if you were to plug in 14 into the equation for Profit, you would still have a negative number (i.e. a negative profit), thus requiring the manufacturer to make no less than 15 items to make a profit:

$(14)^2+700(14)-10000=-4\\\\(15)^2+700(15)-10000=725$

3 0

1 year ago

A landscaper buys 1 gallon of plant fertilizer. He uses 1/5 of the fertilizer, and then divides the rest into 3 smaller bottles.

PIT_PIT [208]

Answer:

$\frac{4}{15}$ of a gallon per bottle

Step-by-step explanation:

1 - $\frac{1}{5}$ = $\frac{4}{5}$

$\frac{4}{5}$ / 3 = $\frac{4}{5}$ x $\frac{1}{3}$ = $\frac{4}{15}$

5 0

1 year ago

Helppp I don't understand on how I am suppose to find the valuee

sp2606 [1]

Graph those points given, in a cartesian plane grid,
that is, an x,y axis grid

and try to make a straight line from the leftmost, to
the rightmost, they don't really line up as a straight
line, so... try to draw a line that will cover "most of
the points", there will be a couple or so "outliers",
the line that "covers most of the points" is so-called
"best-fit" line, so, using that line, try to get what
"y" is, when x = 3

4 0

2 years ago

4. John wants to cover a box entirely with silver paper. How many square centimetres

Mice21 [21]

Answer: 4=C. 4 164 sq cm

5=A. 5.0 sq dm

6=B. 272.6 sq dm

HOPE THIS HELPS

7 0

2 years ago

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