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3 years ago

50POINTS!!

2 answers:

3 0

If the insurance pays $2,000, but the test itself cost $2,750, you simply subtract.
$2,750-$2,000= $750
Therefore Bobby has to pay $750

8090 [49]3 years ago

3 0

If his insurance has a $2,000 deductible then it will deduct $2,000 from the $2,750 cost of the stress test so subtract $2750 minus $2000 which equals $750. So your answer is A. $750

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At what points does the curve r(t) = ti (4t − t2)k intersect the paraboloid z = x2 y2? (if an answer does not exist, enter dne.)

Aleonysh [2.5K]

$\mathbf r(t)=x(t)\,\mathbf i+y(t)\,\mathbf j+z(t)\,\mathbf k=t\,\mathbf i+(4t-t^2)\,\mathbf k$
$\implies \begin{cases}x(t)=t\\y(t)=0\\z(t)=4t-t^2\end{cases}$

So the paraboloid is given by

$z(t)=x(t)^2y(t)^2\iff 4t-t^2=0$

which holds for $t^2-4t=t(t-4)=0$ , i.e. when $t=0$ and $t=4$ .

To make sure this is correct, plug in $t=0$ and $t=4$ to find out the value of $\mathbf r(t)$ , and see if these points are on the paraboloid.

$\mathbf r(0)=0\,\mathbf i+0\,\mathbf j+0\,\mathbf k\implies (0,0,0)$
$0=0^2\times0^2$

$\mathbf r(4)=4\,\mathbf i+0\,\mathbf j+(4\times4-4^2)\,\mathbf k\implies (4,0,0)$
$0=4^2\times0^2$

Both of these hold, so the answer is correct.

8 0

3 years ago

Use an equivalent calculation to work out 4.29 * 0.3 please i need it now

PSYCHO15rus [73]

The answer would be1.287

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3 years ago

Which of the following allow electrons to flow easily?A. wood. B. plastic. C. copper. D. glass.

lisov135 [29]

Copper because that's what wires are made from and they help transport electricity

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3 years ago

Let f be an exponential function and g be a logarithmic function.

love history [14]

Good evening ,

______

Answer:

1) (f+g)(1) = e

2) (fg)(1) = 0

3) (3f)(1) = 3e

___________________

Step-by-step explanation:

1) (f+g)(1) = f(1) + g(1) = e¹ + log1 = e + 0 = e.

2) (fg)(1) = f(1) × g(1) = e¹ × log(1) = e¹ × 0 = e × 0 = 0.

3) (3f)(1) = 3×f(1) = 3×e¹ = 3e.

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4 years ago

Jamie made 56 free throws. This is 70% of the free throws she attempted. How

RoseWind [281]

Answer:

B. 80

70% percent of 80 is 57

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3 years ago