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Lostsunrise [7]
3 years ago
10

What is (x - 8)(x + 4) + (x - 3)(x + 9)?

Mathematics
1 answer:
JulijaS [17]3 years ago
7 0

Answer:

the answer is b

Step-by-step exp.anation:

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Find the values of x and y.<br> 40<br> sy<br> 40<br> xº<br> X =<br> y= 0
Helga [31]

Answer:

x = 30°

y = 5

Step-by-step explanation:

The ∆ where you find x is an isosceles ∆ because two of its sides has a length of 40 each, since the other triangle has equal angles of 60° each, it also has equal length sides of 40.

Therefore, x is a base triangle of the isosceles, thus:

x = ½(180 - (180 - 60))

x = ½(180 - 120)

x = ½(60)

x = 30°

Let's find y.

8y = 40 (sides of an equilateral ∆ are equal)

Divide both sides by 8

y = 5

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3 years ago
How many total drinks were sold in the three-hour time period?
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Answer:

20 drinks

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Step-by-step explanation:

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3 years ago
What is the answer of 2/3+12a
viktelen [127]
2(1/3+6a)
this is the answer
3 0
3 years ago
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Which pair of complex numbers has a real-number product? (1 + 3i)(6i) (1 + 3i)(2 – 3i) (1 + 3i)(1 – 3i) (1 + 3i)(3i)
Kobotan [32]

Answer:

<h2>(1 + 3i)(1 – 3i) gives real number product</h2>

Step-by-step explanation:

Given the expressions

(1 + 3i)(6i) ,(1 + 3i)(2 -3i), (1 + 3i)(1 - 3i), (1 + 3i)(3i)

From analysis one of the following pairs has real-number products

(1 + 3i)(2 -3i), (1 + 3i)(1 - 3i)

Performing operations on

(1 + 3i)(2 -3i)= 2-3i+6-6i^2 \\= 2-3i+6-6(-1) \\=2-3i+6+6 \\=14-3i

Performing operations on

(1 + 3i)(1 - 3i) \\= 1-3i+3i-9(i)^2 \\= 1+0-9(-1) \\= 1+9=10

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3 years ago
What is an equation in math?
lesya692 [45]
 an equation<span> is a statement of an equality containing one or more variables</span>
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3 years ago
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