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Crank
3 years ago
5

What is the value of 12a^-4b^-3 for a = 2 and b = -1?

Mathematics
2 answers:
sladkih [1.3K]3 years ago
8 0

Answer:

-3/4

Step-by-step explanation:

a = 2 and b = -1

12a⁻⁴b⁻³

= 12(2)⁻⁴(-1)⁻³

= 12(1/16)(-1)

= -12/16

= -3/4

enyata [817]3 years ago
7 0
12a^-4 * b^-3
a= 2 and b = -1

Can you put 2 where it says a and -1 where it says b
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The 4th and 8th term of a G.P. are 24 and 8/27 respectively. find the 1st term and common ratio
beks73 [17]

Answer:

see explanation

Step-by-step explanation:

The n th term of a geometric progression is

• a_{n} = a₁ r^{n-1}

where a₁ is the first term and r the common ratio

given a₄ = 24, then

a₁r^{3} = 24 → (1)

Given a₈ = \frac{8}{27}, then

a₁r^{7} = \frac{8}{27} → (2)

Divide (2) by (1)

r^{4} = \frac{\frac{8}{27} }{24} = \frac{1}{81}

Hence r = \sqrt[4]{\frac{1}{81} } = \frac{1}{3}

Substitute this value into (1)

a₁ × (\frac{1}{3} )³ = 24

a₁ × \frac{1}{27} = 24, hence

a₁ = 24 × 27 = 648

4 0
4 years ago
The ratio of daisies to roses in a garden is 20:1. Does this garden have more roses or more daises in the garden
PtichkaEL [24]

Answer:

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Peyton is a sprinter who can run the 40-yard dash in 4.5 seconds. he converts his speed into miles per hour, as shown below.
oksano4ka [1.4K]
The correct question is
<span>Peyton is a sprinter who can run the 40-yard dash in 4.5 seconds. He converts his speed into miles per hour, as shown below
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the picture in the attached figure

we know that
The term (5280 ft/1 mi)  is incorrect
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3 years ago
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larisa86 [58]
The right answer for the question that is being asked and shown above is that:

Two numbers have a sum of 71 and a difference of 37
x + y = 71
x - y = 37

So in order to get the two numbers, here it is:
x + y = 71
x - y = 37
------------
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6 0
3 years ago
Read 2 more answers
4+(-7)-(-3) What will be the answer ?
viva [34]
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