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zubka84 [21]
3 years ago
6

What is the sum of –356.1 + 258.6? –614.7 –97.5 97.5 614.7

Mathematics
2 answers:
Debora [2.8K]3 years ago
7 0
The answer is B. BC we know the answer anti C or D BC u got to have a negative number.

ludmilkaskok [199]3 years ago
5 0
Your answer would be -97.5. The reason why is because the integer rules say:

Same sign add and keep, different signs subtract, take the sign of the highest number, and that'll be exact.

And since -356.1 is greater than 258.6, then you'll take the sign of -356.1, which is negative.

I hope I helped :)
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SOMEONE HELP ASAP!!
Anuta_ua [19.1K]

9514 1404 393

Answer:

  (c)  dZ/dt = 11/√544, so moving away at about 0.47 m/s

Step-by-step explanation:

The (x, y) coordinates of the car are related by the fact that they are on a circle centered at (12, 7) with a radius of 5. Then their rates of change are related by the derivative of the circle equation with respect to time.

  (x -12)^2 + (y -7)^2 = 25

  2(x -12)x' +2(y -7)y' = 0

  y' = -(x -12)/(y -7)x'

At the time and point of interest, we have ...

  y' = -(15 -12)/(11 -7)(1) = -3/4

__

The distance (z) to the observer is given by the Pythagorean theorem:

  z^2 = (x -0)^2 +(y -2)^2

and its rate of change with time is ...

  2z·z' = 2(x-0)x' +2(y -2)y'

The distance d at the point of interest is ...

  z = √((15 -0)^2 +(11 -2)^2) = √(225 +81) = √306 = 3√34

So, the rate of change of distance to the observer at the time and point of interest is ...

  z' = (x(x') +(y -2)y')/z

  z' = ((15)(1) +(11-2)(-3/4))/(3√34) = (33/4)/(3√34)

  z' = 11/√544 ≈ 0.47 . . . m/s

3 0
3 years ago
20141
Kryger [21]
What????? Um I’m so sorry I don’t know
8 0
3 years ago
Write the formula for the parabola that has x- intercepts (3,0) and (8,0), and y- intercept (0,−2)
alexira [117]

Answer:x^2-5x=-12(y+2)

Step-by-step explanation:

Given

Parabola has x-intercept has (3,0) and (8,0)

and Y-intercept as (0,-2)

Now the general equation of parabola is

y=ax^2+bx+c\quad \ldots(i)

Substitute  (0,-2) in (i) we get

-2=c

Now substitute (3,0) in equation (i)

0=a(3)^2+3b-2\quad \ldots(ii)

Now substitute (8,0) in equation (i)

0=a(8)^2+8b-2\quad \ldots(iii)

Solving (ii) and (iii) we get

a=\frac{-1}{12}\ \text{and}\ b=\frac{5}{12}

therefore

y=\frac{-x^2}{12}+\frac{5x}{12}-2

12y=-x^2+5x-24

5 0
3 years ago
What is the slope of the line segment?<br><br> 5<br> 1/5<br> -1/5<br> -5
Elanso [62]

Answer:

5

Step-by-step explanation:

Calculate slope by choosing two points. (1, 5) and (2, 10)

slope = (10 - 5) / (2 - 1) = 5/1 = 5

6 0
3 years ago
[IMAGE ATTACHED]<br> I don’t understand this please help.
rusak2 [61]

Answer:

  • z+5+101=180°( being straight angle)
  • z=180°-106°
  • z=74°

<h3>hope it helps.</h3><h3>stay safe healthy and happy</h3><h3 />
5 0
3 years ago
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