3 years ago

6. Find the approximate value of (look at the picture)

Mathematics

1 answer:

meriva3 years ago

3 0

9^10 (the ten is small)

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Eduardwww [97]

Answer:

i need to guess that it be inverse and probably a.

Step-by-step explanation:

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4 years ago

Solving simultaneous equations with one quadratic, x^2+y^2=16 and y=x+3

Svetlanka [38]

If $y=x+3$ , then in the first equation you have

$x^2+(x+3)^2=x^2+(x^2+6x+9)=2x^2+6x+9=16$

Rewriting a bit, you get

$x^2+3x+\dfrac92=8$

$x^2+3x+\dfrac94+\dfrac94=8$

$\left(x+\dfrac32\right)^2=\dfrac{23}4$

$x=-\dfrac32\pm\dfrac{\sqrt{23}}2$

Now, since $y=x+3$ , you also get

$y=-\dfrac32\pm\dfrac{\sqrt{23}}2+3=\dfrac32\pm\dfrac{\sqrt{23}}2$

So, there are two solutions here:

$(x,y)=\left(-\dfrac32+\dfrac{\sqrt{23}}2,\dfrac32+\dfrac{\sqrt{23}}2\right)$
$(x,y)=\left(-\dfrac32-\dfrac{\sqrt{23}}2,\dfrac32-\dfrac{\sqrt{23}}2\right)$

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3 years ago

2y = 4x - 8<br> y = x +4<br> Solve by substitution

Nataly [62]

Answer:

x=8

Step-by-step explanation:

2(x+4)=4x-8

2x+8=4x-8

2x+8-8=4x-8-8

2x=4x-16

2x-4x=4x-16-4x

-2x=-16

Divide by -2 on both sides

and get... X=8

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3 years ago

Dinner was $48. Find the total cost including 6% tax and 29% tip

lara [203]

Answer:

Step-by-step explanation:

tax plus tip is 35%

35% of 100 is 35

48 + 35 = 83

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3 years ago

a cargo plane flew to the maintenance facility and back. it took one hour less time to get there than it did to get back. The av

polet [3.4K]

The trip took 57 hour

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3 years ago