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Troyanec [42]
3 years ago
12

Solve for y.8^3-3y=256^4y

Mathematics
1 answer:
aliina [53]3 years ago
3 0
8^{3-3y}=256^{4y}\\\\(2^3)^{3-3y}=(2^8)^{4y}\\\\2^{3(3-3y)}=2^{8\cdot4y}\\\\2^{9-9y}=2^{32y}\iff9-9y=32y\\\\-9y-32y=-9\\-41y=-9\ \ \ \ /:(-41)\\\\y=\frac{9}{41}
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What is an equation of the line that is parallel to y=3x-8 and passes through the point (4,-5)
Anna [14]
Pareallell lines have same slope
y=mx+b, m=slope
y=3x-8 so we need
y=3x+b
find b

so given (4,-5)
we can subsitute the point
(x,y)
(4,-5)
x=4 then y=-5

so
-5=3(4)+b
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3 years ago
Is 3/4 and 3/8 equivalent fractions and why? Thanks
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4 0
3 years ago
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712.9 Divided by what equals 71.29
soldi70 [24.7K]

Answer:

10

Step-by-step explanation:

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4 years ago
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Katena32 [7]
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8 0
4 years ago
Help me out with this math problem for 50 points!!!
spin [16.1K]

Answer:

A = 84 ft^{3}

Step-by-step explanation:

To find the area of a trapezoid, use this equation:

A = \frac{a+b}{2}h

a = top base

b = bottom base

h = height

Let's classify all the sides:

a = 4 ft

b = 10 ft

h = 12 ft

Now, let's plug all these into the equation:

A = \frac{4+10}{2} (12)

A = \frac{14}{2}(12)                                    Add what's in the numerator

A = 7(12)                                      Divide 14 by 2

A = 84 ft^{3}                                     Multiply 7 by 12

So, the area of the trapezoid is 84 ft^{3}.

Hope this helps!!

8 0
2 years ago
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