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4 years ago

What is 2/3 plus 7/9

Mathematics

2 answers:

gogolik [260]4 years ago

5 0

The answer = 1.44444444

allsm [11]4 years ago

5 0

2/3 can equal 6/9. Then when you add them you simple add the top to the top, and the bottoms stay the same

6/9 + 7/9, which equals 15/9. This simplifies to 1 6/9, or 1 2/3

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Plz help me out I need it

Veseljchak [2.6K]

Answer:

v = 6

u = 6√2

<h2>Hope it helps.........</h2>

5 0

3 years ago

Can someone help me please!!!

Dominik [7]

Not sure how to put it into Matrix form but the answers would be.
11/2
-7
-19/2
and together that would be (11/2,-7.-19/2)

5 0

3 years ago

A company makes a profit of $y (in thousand dollars) when it produces x computers,

leva [86]

Using quadratic function concepts, it is found that:

a) The value of a is -2000.

b) The maximum profit the company can make is of $5,000,000, when 150 computers should be produced.

c) Between 140 and 160 computers need to be produced.

The profit is modeled by:

$y = a(x - 100)(x - 200)$

Item a:

If 120 computers are produced, the profit will be $3,200,000, hence when $x = 120, y = 3200000$ , and this is used to find a.

$y = a(x - 100)(x - 200)$

$3200000 = a(120 - 100)(120 - 200)$

$-1600a = 3200000$

$a = -\frac{3200000}{1600}$

$a = -2000$

The value of a is -2000.

Item b:

We first place the quadratic function into standard form, thus:

$y = -2000(x - 100)(x - 200)$

$y = -2000(x^2 - 300x + 20000)$

$y = -2000x^2 + 600000x - 40000000$

Which has coefficients $a = -2000, b = 600000, c = -40000000$ .

Then, we have to find the vertex:

$x_V = -\frac{b}{2a} = -\frac{600000}{2(-2000)} = 150$

$\Delta = b^2 - 4ac = (600000)^2 - 4(-2000)(-40000000) = 40000000000
$

$y_V = -\frac{\Delta}{4a} = -\frac{40000000000
}{4(-2000)} = 5000000$

The maximum profit the company can make is of $5,000,000, when 150 computers should be produced.

Item c:

We are working with a concave down parabola, hence the range is <u>between the roots of</u>:

$y = -200x^2 + 600000x - 40000000$

$4800000 = -200x^2 + 600000x - 40000000$

$-200x^2 + 600000x - 44800000 = 0$

The coefficients are $a = -200, b = 600000, c = -44800000$ .

Then:

$\Delta = b^2 - 4ac = (600000)^2 - 4(-2000)(-44800000) = 1600000000$

$x_1 = \frac{-b - \sqrt{Delta}}{2a} = \frac{-600000 - \sqrt{1600000000}}{2(-2000)} = 160$

$x_2 = \frac{-b + \sqrt{Delta}}{2a} = \frac{-600000 + \sqrt{1600000000}}{2(-2000)} = 140$

Between 140 and 160 computers need to be produced.

A similar problem is given at brainly.com/question/24705734

8 0

3 years ago

Look at image. reflection across x=-1

gayaneshka [121]

Answer:

U 0,-2 S -2,-1 T -3 -5 will be the new points

Step-by-step explanation:

5 0

3 years ago

Is one ounce greater than one gram

ludmilkaskok [199]

Yes, one ounce is 28 grams.

8 0

3 years ago