3 years ago

Sue has 20 biscuits in a tin.

Mathematics

1 answer:

Julli [10]3 years ago

5 0

Answer:

$\frac{111}{190}$

Step-by-step explanation:

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3 pounds of bananas cost $7. At this rate, how much does 1 pound of bananas cost?

Furkat [3]

Answer:

Step-by-step explanation:

To find the cost of 1 pound of bananas we use ratio and proportion

From the question

3 pounds of bananas costs $7

Then 1 pound will cost

$\frac{7 \times 1}{3} = \frac{7}{3 } \\ = 2.33333...$

We have the final answer as

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3 years ago

What is the explicit rule for the geometric sequence?<br><br> 600,300,150,75,

JulijaS [17]

Answer:

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This the correct answer

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3 years ago

A company sells widgets. The amount of profit, y, made by the company, is related to

just olya [345]

Answer:

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Step-by-step explanation:

Given:

y = amount of profit
x = selling price of each widget
$y=-x^2+78x-543$

To find the maximum amount of profit, differentiate the equation, set it to zero and solve for x. Substitute found value of x into the original equation.

<u>Differentiate equation</u>

$y=-x^2+78x-543$

$\implies \dfrac{dy}{dx}=-2x+78$

<u>Set differentiated equation to zero and solve for x</u>:

$\dfrac{dy}{dx}=0$

$\implies -2x+78=0$

$\implies 2x=78$

$\implies x=39$

<u>Maximum profit</u>

Substitute x = 39 into the equation:

$\implies -(39)^2+78(39)-543=978$

Therefore, max profit is $978

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3 years ago

Solve the quadratic equation below by completing the square. What are the

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Answer:

the solution is:

Step-by-step explanation:

x2 - 12x + 30 = 23!!

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