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3 years ago

Please help I’ll make you the brainiest

Mathematics

2 answers:

kipiarov [429]3 years ago

6 0

Answer:

It's

${( - 1)}^{ \frac{3}{4} }$

Step-by-step explanation:

$\sqrt[4]{ {( - 1)}^{3} } = \sqrt[4]{ - 1}$

elena-s [515]3 years ago

4 0

I think it’s the first option

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3 years ago

If 3a + 2b = 7 and 2a + 2b = 9 , what is the value of

Simora [160]

Hey there :)

We have two equations:
3a + 2b = 7
2a + 2b = 9

We need to solve simultaneously to find the values of a and b

eq.1 3a + 2b = 7
eq.2 ( 2a + 2b = 9 ) x -1 ) multiply by -1 to cancel 2b

3a + 2b = 7
- 2a - 2b = -9 ( Add both together )
-------------------
a = - 2

Substitute the value you found for a in a in order to find b

3( - 2 ) + 2b = 7 2( - 2 ) + 2b = 9
- 6 + 2b = 7 OR - 4 + 2b = 9
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