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elena-14-01-66 [18.8K]
3 years ago
12

Question 2

Mathematics
1 answer:
vekshin13 years ago
3 0

Answer:

A: 3x + 4y = -6

Step-by-step explanation:

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The mean price of a new laptop computer from Store #1 is $799.99, and they only sell two brands of computers. The mean price of
Sati [7]
<span>                                                     value
Weighted mean average = ---------------------------
                                              number of brands


value = mean price of computers from Store #1 * number of brands from store #1 + mean price of computers from store #2 * number of brands from store #2

value =  $799.99 * 2 +  $679.99 * 4 = $4,319.94

number of brands = 2 + 4 = 6

weighted average = $4,319.94 / 6 = $ 719.99

Answer: option b. $719.99
</span>
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2 years ago
For what value of x is sin x = cos 19º, where 0°&lt; x &lt; 90°?
KonstantinChe [14]

Answer:

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Step-by-step explanation:

The cosine of an angle is equal to the sine of its complement:

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Comparing to the given expression, we see that x = 71°.

7 0
3 years ago
Find the difference.<br> 3x^2y - x^2y
Murljashka [212]

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Step-by-step explanation:

Just subtraction.

The x is like a unit, There are 3 X's at first then subtract 1 x and you gor 2x.

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5 0
3 years ago
How do you determine the area of a circle? Could you give an example please?
pickupchik [31]
To determine the area if the circle, you must know the diameter or the radius of a circle.

If you know the radius of a circle, use this as your formula. Remember: Pi (the greek symbol thingy) is equal to 3.1415. (A is equal to area of the circle and r represents the radius)
a = \pi {r}^{2}
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7 0
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Sveta_85 [38]
5/6 is 1/6 more than 4/6. All you had to do is subtract 4/6 from 5/6 to get <u><em>1/6</em></u>.
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3 years ago
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