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3 years ago

If a#b=a+2b, what is the value of 3#4

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

8 0

A # b = a + 2b

3 # 4 ⇒ a = 3 and b = 4

substitute:

3 # 4 = 3 + 2 · 4 = 3 + 8 = 11

klasskru [66]3 years ago

6 0

Hey there, Dudedan!
In a#b = a+2b, we have the first term, a, plus 2 times the second term, b.
Let's try that with 3#4.
3#4 = 3+2(4) =
3 + 8 = 11.
Hope this helps!

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3 years ago

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3 years ago

Line t has an equation of y = -8x + 7. Line u includes the point (-1, 7) and is parallel to line

umka2103 [35]

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3 years ago

Y * x = 20<br><br> y + x = 9 <br><br> what numbers are y and x equal to?

Ksivusya [100]

$y = 9 - x$
Substitute into
$y \times x = 20 \\ (9 - x) \times x = 20 \\ { - x}^{2} + 9x = 20 \\ {x}^{2} - 9x + 20 = 0 \\ (x - 5)(x -4) = 0 \\ x = 5 \: or \: x = 4$
When x = 5,
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When x = 4,
$y = 9 - 4 \\ y = 5$

x = 5, y = 4
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Hope this helps. - M

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3 years ago