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3 years ago

Perform the indicated operation. 6 1/3 + 8 3/4

Mathematics

1 answer:

belka [17]3 years ago

6 0

Answer:

15 1/12

Step-by-step explanation:

First step, add the whole numbers ie 6+8=14

Second, add fractions, 1/3+3/4

The lcm of denominators is 12 hence (4+9)/12=13/12=1 1/12

14+1 1/12=15 1/12

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Seven hotdogs and four hamburgers cost $13. Four hotdogs and seven hamburgers cost $14.50. How much does one hamburger cost and

viva [34]

Answer:

hotogs=$1.50 hamburgers=$1

Step-by-step explanation:

h=hotdog b=hamburger

7h+4b=13

4h+7b=14.5

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4h+7b=14.5

h=-0.57b+1.86

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3 years ago

5 dollars for 2 cans of tuna

Lera25 [3.4K]

Answer:

5 times 2=10 well i guess this was a joke right?

Step-by-step explanation:

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2 years ago

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I really need your help, but I don't get any.

STatiana [176]

Answer:

Step-by-step explanation:

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2 years ago

The perimeter of a rectangular garden is 108 meters. The length is 6 meters longer than twice the width. Find the dimensions of

faltersainse [42]

The answer is that the width is 16 m

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2 years ago

Find all solutions of each equation on the interval 0 ≤ x < 2π.

Korvikt [17]

Answer:

$x = 0$ or $x = \pi$ .

Step-by-step explanation:

How are tangents and secants related to sines and cosines?

$\displaystyle \tan{x} = \frac{\sin{x}}{\cos{x}}$ .

$\displaystyle \sec{x} = \frac{1}{\cos{x}}$ .

Sticking to either cosine or sine might help simplify the calculation. By the Pythagorean Theorem, $\sin^{2}{x} = 1 - \cos^{2}{x}$ . Therefore, for the square of tangents,

$\displaystyle \tan^{2}{x} = \frac{\sin^{2}{x}}{\cos^{2}{x}} = \frac{1 - \cos^{2}{x}}{\cos^{2}{x}}$ .

This equation will thus become:

$\displaystyle \frac{1 - \cos^{2}{x}}{\cos^{2}{x}} \cdot \frac{1}{\cos^{2}{x}} + \frac{2}{\cos^{2}{x}} - \frac{1 - \cos^{2}{x}}{\cos^{2}{x}} = 2$ .

To simplify the calculations, replace all $\cos^{2}{x}$ with another variable. For example, let $u = \cos^{2}{x}$ . Keep in mind that $0 \le \cos^{2}{x} \le 1 \implies 0 \le u \le 1$ .