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3 years ago

51,988 rounded to the nearest ten thousand is.

1 answer:

7 0

1) 50000

2) 770000

because you look at the place value before the 10,000 place and if it's above 4, then you round up. if it's below 5, you round down.

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8.0007 * 10 to the 6 power

SVETLANKA909090 [29]

Answer: 8000700

Step-by-step explanation:

10 to the 6th power is 100000

1000000 * 8.0007 = 8000700

4 0

3 years ago

If a=3/6 and b=-3/-5 find -3a+4b

Fiesta28 [93]

Answer:

Step-by-step explanation:

-3(3/6) + 4(3/5)

-3(1/2) + 4(3/5)

-3/2 + 12/5

-15/10 + 24/10

9/10

7 0

3 years ago

Cybil flips a coin and rolls a fair number cube at the same time. What is the probability that she will toss tails and roll a nu

Firdavs [7]

$|\Omega|=2\cdot6=12\\|A|=1\cdot2=2\\\\P(A)=\dfrac{2}{12}=\dfrac{1}{6}$

4 0

3 years ago

-5(-x - 1) + 4x – 1= 49 solve for x

Anton [14]

Answer:

x=5

Step-by-step explanation:

-5(-x - 1) + 4x – 1= 49

Distribute

5x +5 +4x -1 = 49

Combine like terms

9x +4 = 49

Subtract 4 from each side

9x+4-4 = 49-4

9x = 45

Divide by 9

9x/9 =45/9

x = 5

4 0

3 years ago

Read 2 more answers

Derive the equation of the parabola with a focus at (0, −4) and a directrix of y = 4.

CaHeK987 [17]

Answer:

$y=-\frac{1}{16} x^2$

Step-by-step explanation:

Equation of parabola with focus at (0,-4) and directrix is $y=4$ .

We know that parabola is the locus of all the points such that the distance from fixed point on the parabola to fixed line directrix is the same.

The parabola is opening downwards.

Let any point on parabola is (x,y).

Distance from focus(0,-4) to (x,y) = $\sqrt{(x-0)^2+(y-(-4))^2}=|y-4|$

$\sqrt{(x-0)^2+(y-+4)^2}=|y-4|$

$(x-0)^2+(y+4)^2=(y-4)^2$

$(x)^2+(y+4)^2=(y-4)^2$

$x^2+(y^2+4y+4y+16)=y^2-4y-4y+16$

$x^2+y^2+8y+16=y^2-8y+16$

$x^2+16y^2=0$

$16y=-x^2$

$y=-\frac{1}{16} x^2$

6 0

2 years ago