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g100num [7]
3 years ago
8

HELP

Mathematics
2 answers:
lara31 [8.8K]3 years ago
7 0

\dfrac{3}{4}a+\dfrac{1}{2}b-\dfrac{1}{2}a=\left(\dfrac{3}{4}a-\dfrac{1}{2}a\right)+\dfrac{1}{2}b\\\\\text{Find the common denominator:}\ it's\ 4\\\\\dfrac{1}{2}=\dfrac{1\cdot2}{2\cdot2}=\dfrac{2}{4}\\\\=\left(\dfrac{3}{4}a-\dfrac{2}{4}a\right)+\dfrac{1}{2}b=\boxed{\dfrac{1}{4}a+\dfrac{1}{2}b}\to\boxed{A)}

Fittoniya [83]3 years ago
5 0

Answer:

A) 1/4a + 1/2b

Step-by-step explanation:

3/4a +1/2b - 1/2a

3/4a -1/2 a     + 1/2 b

We need a common denominator for the a terms which is 4

3/4a - 1/2*2/2 a  + 1/2 b

3/4a -2/4a     + 1/2 b

1/4a + 1/2 b

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8 3/25 because 8.12 is 8 12/100 and when you simplify 12/100 you get 3/25

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If d varies directly as t and d = 20.5 when t=12 find:
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Step-by-step explanation:

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2x + 3y = 3 and x + 6y = -3
jekas [21]

Answer:

Step-by-step explanation:

Multiplying x+6y=-3 with 2 so its equal to first eqn,

Eliminating,

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2 years ago
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3 years ago
Find the absolute maximum and absolute minimum values of f on the given interval. f(x) = 16 + 2x − x^2, [0, 5]
RSB [31]

Answer:

<h2>absolute maximum = 16</h2><h2>absolute minimum = 1</h2>

Step-by-step explanation:

To get the absolute maximum and minimum values of the function f(x) = 16 + 2x − x² n the given interval [0,5], we need to get the values of f(x) at the end points. The end points are 0 and 5.

at x = 0;

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at the other end point i.e at x = 5;

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