4 years ago

What is sin B=0.4848

Mathematics

1 answer:

Oksana_A [137]4 years ago

7 0

0.0084 is the answer.

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I need help,I need to use substitution but I don't know how

lions [1.4K]

If $y=x+6$ and $y=-2x-3$ , then you can replace $y$ in either equation with the equivalent expression given by the other equation. In this case, you have

$x+6=-2x-3$

and you can solve for $x$ .

$x+2x+6-6=-2x+2x-3+6\implies3x=3\implies\dfrac{3x}3=\dfrac33\impliesx=1$

Then $y=1+6=7$ .

For the second system, you can write

$5x-y=-5\implies 5x-5x-y=-5-5x\implies-y=-5-5x$

$\implies-(-y)=-(-5-5x)\implies y=5+5x$

Then substitute this into the second equation and you get

$3x-6(5+5x)=24\implies3x-30-30x=24\implies-27x-30+30=24+30$

$\implies-27x=54\implies x=2$

so that

$y=5+5(2)=15$

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4 years ago

The sum of three times a number and ten is negative 5

ki77a [65]

Yes 3n+10=-5 so it’s 5

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3 years ago

Select whether the number is rational, irrational, or imaginary. 1/4

rjkz [21]

Because 1/4 is a fractional number, it is also a ratio which means it is Rational. :)

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3 years ago

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4(b+2)=40 what is the value of b?

Katarina [22]

Answer:

Step-by-step explanation:

4b+8=40

4b=32

b=8

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3 years ago

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Need help with thiss guys!!!

navik [9.2K]

I would choose D for that question

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3 years ago