2 years ago

What is the value of a in the equation 5a - 10b = 45, when b = 3?

Mathematics

2 answers:

AURORKA [14]2 years ago

7 0

Answer:

Step-by-step explanation:

timurjin [86]2 years ago

5 0

Answer:15

Step-by-step explanation: Substitute the values into the equation and solve

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-5(w+4) +8< - 42 need a quick answer

Nesterboy [21]

Answer:

$w > 6$

Step-by-step explanation:

Let's solve your inequality step-by-step.

−5(w+4)+8<−42

Step 1: Simplify both sides of the inequality.

−5w−12<−42

Step 2: Add 12 to both sides.

−5w−12+12<−42+12

−5w<−30

Step 3: Divide both sides by -5.

$\frac{-5w}{-5} < \frac{-30}{-5}$

$w > 6$

Answer:

$w > 6$

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Step-by-step explanation:

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2 years ago

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inysia [295]

$\text{L.H.S}\\\\=\dfrac{\sin^4 A - \cos^4 A}{ \sin A + \cos A}\\\\\\=\dfrac{(\sin^2 A)^2-(\cos^2 A)^2}{\sin A + \cos A}\\\\\\=\dfrac{(\sin^2 A + \cos^2 A)(\sin^2 A-\cos^2 A)}{\sin A + \cos A}\\\\\\=\dfrac{1\cdot(\sin A+\cos A)(\sin A - \cos A)}{\sin A +\cos A}\\\\\\=\sin A - \cos A\\\\\\=\text{R.H.S}~~~ \\\\\text{Proved.}$

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2 years ago

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