3 years ago

PLEASE MAKE SURE HELP ME!

Mathematics

2 answers:

Aleks [24]3 years ago

7 0

-8a+12b-36 is the answer

11Alexandr11 [23.1K]3 years ago

3 0

Answer:

-8a+12b-36

Step-by-step explanation:

Multiply -4 into the expression (2a-3b+9)

So -4(2a) + -4(-3b) + -4(9), now simplify it

-8a+12b-36

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5*10 divided by 30 -10

sp2606 [1]

The answer to your question would be -25/3

As decimal -8.333333

4 0

3 years ago

A and b are positive integers and a-b=2. Evaluate the following: 9^1/2b/3^a

OlgaM077 [116]

Answer:

$\frac{1}{ 9 }$

Step-by-step explanation:

$\huge \frac{ {9}^{ \frac{1}{2}b } }{ {3}^{a} } \\ \\ = \huge \frac{ {( {3}^{2} )}^{ \frac{1}{2}b } }{ {3}^{a} } \\ \\ = \huge \frac{ { {3}}^{2 \times \frac{1}{2}b } }{ {3}^{a} } \\ \\ \huge = \frac{ {3}^{b} }{ {3}^{a} } \\ \\ \huge = \frac{1}{ {3}^{a - b} } \\ \\ \huge= \frac{1}{ {3}^{2} } \\ ( \because \: a - b = 2)\\ \\ \huge = \frac{1}{ 9 }$