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4 years ago

10

Solve the equation: A. Equations with Fractions and Mixed Numbers B. Equations with Fractions and Mixed Numbers C. Equations wit

h Fractions and Mixed Numbers D. Equations with Fractions and Mixed Numbers

1 answer:

klemol [59]4 years ago

6 0

<span>C. Equations with Fractions and Mixed Numbers </span>

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A toy company has determined that the revenue generated by a particular toy is modeled by the following equation:

Artemon [7]

R(x) = 11x - 0.025x^2
Revenue is maximum when dr(x)/dx = 0
dr(x)/dx = 11 - 0.05x = 0
0.05x = 11
x = 11/0.05 = 220
The revenue will be maximum when 220000 toys are produced.

r(220) = 11(220) - 0.025(220)^2 = 2,420 - 1,210 = 1,210
Therefore, maximum revenue = $1210000

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3 years ago

I need an answer to this asap... please ....just number 3

Agata [3.3K]

Answer:

hence cos ( 2 A ) = cos 2 A − ( 1 − cos 2 A ) = 2 cos 2 A − 1

Step-by-step explanation:Well we know that for two angles A , B

it holds that cos ( A + B ) = cos A cos B − sin A ⋅ sin B hence for A = B you get cos ( 2 A ) = cos 2 A − sin 2 A But sin 2 A = 1 − cos 2 A

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3 years ago

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6. Fred gave the cashier $20 to pay for 3 large bags of Takis . The cashier gave him $12.56 in change. Each bag of Takis cost th

Ira Lisetskai [31]

Answer:

$2.48

Step-by-step explanation:

He paid $20 and got $12.56 back so you subtract

20-12.56=7.44

So his total was 7.44 and he bought 3 bags so divide to find the individual price

7.44/3=2.48

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3 years ago

Work out the area of a circle whose diameter is equal to 14 cm.

Lera25 [3.4K]

Given:

The diameter of the circle = 14 cm

To find:

The area of the circle.

Solution:

We have,

Diameter of the circle = 14 cm

We know that the radius of the circle is half of its diameter. So,

$r=\dfrac{14}{2}$

$r=7\text{ cm}$

The area of a circle is:

$A=\pi r^2$

Substituting $\pi=\dfrac{22}{7}, r=7$ in the above formula, we get

$A=\dfrac{22}{7}\times (7)^2$

$A=22\times 7$

$A=154$

Therefore, the area of the circle is 154 square cm.

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3 years ago

Evaluate f(t)=-2t2+ 1 for f(-3).

podryga [215]

Answer:

7

Step-by-step explanation:

First, plug-in f(-3) into t in the function:

$f(-3)=-2(-3) +1$

Second, multiply -2 and -3 to get 6:

$f(-3)=-2(-3)+1$ ⇒ $f(-3)=6+1$

Third, add 6 and 1 to get your answer:

$f(-3)= 6+1$ ⇒ $f(-3)=7$

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3 years ago