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4 years ago

6

Please help and explain it would be very helpful

1 answer:

iris [78.8K]4 years ago

6 0

So for the first one think of it as decimals so it’s easier: 9.20-7.35, subtract and it would be 1.85 so since we use decimals to make it easier it isn’t actually a decimal so it would be 2 hours and 25 minutes. And for the second one you just add 50 minutes to that and you would get 3 hours and 15 minutes.

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Completa el enunciado siguiente. Luego usa una recta numérica para hallar la suma 4 + (-7).

bagirrra123 [75]

Respuesta Es -3 (tried my best I’m only in Spanish two my main language is English)

8 0

3 years ago

Find the derivative of the function at P 0 in the direction of A. f(x,y,z) = 3 e^x cos(yz), P0 (0, 0, 0), A = - i + 2 j + 3k

Alik [6]

The derivative of $f(x,y,z)$ at a point $p_0=(x_0,y_0,z_0)$ in the direction of a vector $\vec a=a_x\,\vec\imath+a_y\,\vec\jmath+a_z\,\vec k$ is

$\nabla f(x_0,y_0,z_0)\cdot\dfrac{\vec a}{\|\vec a\|}$

We have

$f(x,y,z)=3e^x\cos(yz)\implies\nabla f(x,y,z)=3e^x\cos(yz)\,\vec\imath-3ze^x\sin(yz)\,\vec\jmath-3ye^x\sin(yz)\,\vec k$

and

$\vec a=-\vec\imath+2\,\vec\jmath+3\,\vec k\implies\|\vec a\|=\sqrt{(-1)^2+2^2+3^2}=\sqrt{14}$

Then the derivative at $p_0$ in the direction of $\vec a$ is

$3\,\vec\imath\cdot\dfrac{-\vec\imath+2\,\vec\jmath+3\,\vec k}{\sqrt{14}}=-\dfrac3{\sqrt{14}}$

3 0

4 years ago

Circle O has a circumference of approximately 250 ft

Varvara68 [4.7K]

Answer:

80 feet

Step-by-step explanation:

c=d $\pi$

Substitute 250 in for circumference

250= $\pi$ d

Divide by $\pi$ or 3.14

d=79.617...

So, the diameter is approximately 80 feet

Hope this helps! :)

8 0

3 years ago

5 3/8 - 1 5/8 =???

lianna [129]

5 3/8- 1 5/8=

43/8 - 13/8= 30/8

put 30/8 into a mixed number which will equal 3 6/8

simplify 3 6/8 which will be 3 3/4

the answer is 3 3/4

7 0

4 years ago

Read 2 more answers

How do you find speeds if you do not know the distance, but only the time

Butoxors [25]

By using this example you be able to do it

5 0

3 years ago