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3 years ago

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Tom had the following scores on math tests: 91, 95, 87 and 83. He has one more test this marking period. What is the lowest grad

e he can receive if he hopes to raise his average above 90?

1 answer:

Ad libitum [116K]3 years ago

6 0

Answer:

94 or 95

Step-by-step explanation:

91 + 95 + 87 + 83 = 356

356/4 =89

average so far is 89

356 + 94 = 450

450/5 = 90

356 + 95 = 451

451/5= 90.2

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What is the slope of (-1,6) and (2,3)?

LenKa [72]

Answer:

-1

Step-by-step explanation:

For a line joining two points (x1, y1) and (x2, y2), it's slope is given as:

$\boxed{ \mathsf{slope = \frac{ y_{2} -y _{1}}{ x_{2} - x _{1}} }}$

Here, the two points are (-1, 6) and (2, 3) in place of (x1, y1) and (x2, y2).

Solving for slope:

$\implies \mathsf{ \frac{3 - 6}{2 - ( -1 )} }$

$\implies \mathsf{ \frac{ - 3}{2 + 1 } }$

$\implies \mathsf{ \frac{ - 3}{3 } }$

$\implies \mathsf{ - 1 }$

Hence, the slope of the line joining the given points is <u>-1.</u>

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2 years ago

The curves y = √x and y=(2-x) and the Cartesian axes form two distinct regions in the first quadrant. Find the volumes of rotati

makkiz [27]

Answer:

Step-by-step explanation:

If you graph there would be two different regions. The first one would be

$y = \sqrt{x} \,\,\,\,, 0\leq x \leq 1 \\$

And the second one would be

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And if you rotate the second region around the "y" axis you get that

$A_2 = 2\pi \int\limits_{1}^{2} x(2-x) dx = \frac{4\pi}{3} = 4.188$

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If you revolve just the outer curve you get

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3 years ago

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PSYCHO15rus [73]

To find the unit price of each item you want to divide:

Fresh water:

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Spring water:

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Hope this Helps!!

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Sergio039 [100]

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2 years ago

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pochemuha

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2 years ago

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