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2 years ago

2. What percent of 80 is 8?

Mathematics

1 answer:

Ostrovityanka [42]2 years ago

7 0

Answer

6.40%

Step-by-step explanation:

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Find the missing terms of the following geometric sequence. Assume all terms are positive. (Hint: The geometric mean of the fi

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2 years ago

10. The bill (including parts and labor) for the repair of an oven was $142. The cost

Lubov Fominskaja [6]

Total cost=$142

cost of parts=$62

cost paid for labour=$142-$62=$80

According to question,

》cost of labour per hr=$32

which can be written as,

》cost of labour/time=$32

Use cross multiplication,

》time=cost of labour/32

Since cost of labour is 80,

Time=80/32

=2.5hrs

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2 years ago

2x^2 -8x + 1 = 0 solving using quadratic formula round to the nearest 10

Mazyrski [523]

Answer:

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Step-by-step explanation:

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3 years ago

What vertex does the quadrilateral and the pentagon share?

Leokris [45]

It equals the middle

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3 years ago

The profit from a business is

GuDViN [60]

First of all we will understand the question!!

The question is saying that you are given a function and you have to find the value of x which will give the maximum profit... Lets solve it by finding the extrema using the vertex

 $\rm \: p(x) = - 5 {x}^{2} + 30x + 8$ 

Identify the coefficients a and b of the quadratic function

 $\rm \: p(x) = { - 5x}^{2} + 30x + 8 \\ \rm \: a = - 5 \: and \: b \: = 30$ 

Since a<0, the function has the maximum value at x, calculated by substituting a and b into x=-b/2a

$\rm \: x = \frac{30}{ 2 \times (- 5)}$

Solve the equation for x

$\rm \: x = 3$

The maximum of the quadratic function is at x=3

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1 year ago