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3 years ago

Set up an algebraic equation that could represent the following situation:

Mathematics

1 answer:

UkoKoshka [18]3 years ago

4 0

Answer:

The profit for any purchased of bananas is R2.

Step-by-step explanation:

Cost of 1 kg banana = R 3

Banana purchased = 4 kg

So, the cost of 4 kg bananas = 4 x 3 = R 12

Amount paid = R 14

Profit = R 14 - R 12 = R 2

So, the profit on any purchased of bananas is R 2.

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What number is it? the difference of 9 and three times equals 69. find the number

Mazyrski [523]

Consider the number as 'n' (for now)
3n - 9 = 69
3n = 69 + 9
3n = 78
n = 78/3
n = 26
Therefore, The number is 26

8 0

3 years ago

Find the work done by gas?

salantis [7]

The work done by the gas when the gas expands will be 567.65 ft-lb.

<h3>What is the work done for an isothermal process?</h3>

The Pressure is inversely proportional to the volume.

Let the initial pressure and initial volume be P₁ and V₁, and the final volume be V₂.

Then the work done by the gas will be

WD = P₁ V₁ ln (V₂ / V₁)

A quantity of the gas with an initial volume of 2 cubic feet and an initial pressure of 700 pounds per square foot.

The gas expands to a volume of 3 cubic feet.

Then the work done by the gas will be

WD = 700 x 2 x ln (3/2)

WD = 1400 x 0.405

WD = 567.65 ft-lb

The work done by the gas when the gas expands will be 567.65 ft-lb.

More about the work done for isothermal process link is given below.

brainly.com/question/4218306

#SPJ1

7 0

2 years ago

Find the amount of the payment for the sinking fund.

ohaa [14]

:)
The formula of the future value of annuity ordinary and solve for pmt
Pmt=58,000÷(((1+0.06÷2)^(2×2)
−1)÷(0.06÷2))=13,863.57

Hope it helps

8 0

3 years ago

Find the axis of symmetry of 2x^2 + 12x + 16 Show your work

raketka [301]

The vertex form:

$y=a(x-h)^2+k\\\\(h,\ k)-vertex$

The axis of symetry is x = h.

$y=ax^2+bx+c\to h=\dfrac{-b}{2a}$

We have

$y=2x^2+12x+16\to a=2,\ b=12,\ c=16$

Substitute:

$h=\dfrac{-12}{(2)(2)}=\dfrac{-12}{4}=-3$

<h3>Answer: x = -3</h3>

6 0

3 years ago

If 3 is subtracted from twice a number, the result is 8 less than the number. Write an equation to solve this problem.

lakkis [162]

3 subtracted from twice a number=2x-3
8 less than the number=x-8
2x-3=x-8
x=-5

3 0

3 years ago