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trasher [3.6K]
3 years ago
14

Solve for y 10.3=0.6y

Mathematics
2 answers:
riadik2000 [5.3K]3 years ago
3 0
17.16 because you have to get y alone so you divide 0.6 on both sides
Whitepunk [10]3 years ago
3 0
Hello! To solve for "y", all we have to do is divide the term that is by "y" to isolate it. In this case, it is 0.6. 10.3/0.6 is 17.16666667 or 17 1/6. y = 17 1/6.

Note: In these kinds of questions, always divide the term (the number by the variable, whether it's y, or sometimes other letters like x or p) both sides to isolate the variable itself.
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16/24 = 4/6 which = 2/3
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Distribute -3 to parenthasees
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mart [117]

Answer:

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Step-by-step explanation:

Given information: |a| = 80, |b| = 50, the angle between a and b is 3π/4.

We need to find the dot product  a · b.

The formula of dot product is

a\cdot b=|a||b|\cos \theta

where, θ is the angle between a and b.

Substitute the given values in the above formula.

a\cdot b=(80)(50)\cos (\frac{3\pi}{4})

a\cdot b=4000\cos (\pi-\frac{\pi}{4})

a\cdot b=-4000\cos (\frac{\pi}{4})           [\because \cos (\pi-\theta)=-\cos \theta]

a\cdot b=-4000\frac{1}{\sqrt{2}}

a\cdot b=-\frac{4000}{\sqrt{2}}

Rationalize the above equation.

a\cdot b=-\frac{4000}{\sqrt{2}}\times \frac{\sqrt{2}}{\sqrt{2}}

a\cdot b=-\frac{4000\sqrt{2}}{2}

a\cdot b=-2000\sqrt{2}

Therefore, the value of a · b is a\cdot b=-2000\sqrt{2}.

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