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viktelen [127]
3 years ago
15

!!!!!!!!!!CAN SOMEONE HELP ME WITH THESE PLEASE!!!!!!!! FIND THE SURFACE AREA

Mathematics
2 answers:
Flura [38]3 years ago
8 0

Answer:

I think D is correct answer if not then C.

Step-by-step explanation:

Talja [164]3 years ago
4 0

Answer:

it might be 48.9 but im not sure

Step-by-step explanation:

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Evaluate the expression 72/x2-2 for x=3
Rzqust [24]

Answer:46

Step-by-step explanation:

7 0
2 years ago
At time t ≥ 0, the velocity of a body moving along the s-axis is v = t² -5t +4. When is the body moving backwards
katovenus [111]

Answer:

A

Step-by-step explanation:

The velocity of a moving body is given by the equation:

v=t^2-5t+4 ,\, t\geq0

Is the velocity is <em>positive </em>(v>0), then our object will be moving <em>forwards</em>.

And if the velocity is negative (v<0), then our object will be moving <em>backwards</em>.

We want to find between which interval(s) is the object moving backwards. Hence, the second condition. Therefore:

v

By substitution:

t^2-5t+4

Solve. To do so, we can first solve for <em>t</em> and then test values. By factoring:

(t-4)(t-1)=0

Zero Product Property:

t=1, \text{ and } t=4

Now, by testing values for t<1, 1<t<4, and t>4, we see that:

v(0)=4>0,\, v(2)=-20

So, the (only) interval for which <em>v</em> is <0 is the second interval: 1<t<4.

Hence, our answer is A.

7 0
3 years ago
How do you answer number 4 &amp; number 6 ?‍♀️ explain ! ?
SVEN [57.7K]
For 4 you just need to multiply the 7 and 33 together and add 32. Then put your awnser over 33. (if it is asking for the fraction)
3 0
3 years ago
Plz help simplify 8/10​
Free_Kalibri [48]

\frac{8}{10} → \frac{4}{5}

8 and 10 can both be divided by 2. So, 8 ÷ 2 is 4 and 10 ÷ 2 is 5.

Hope this helps :)

3 0
2 years ago
Read 2 more answers
30.16=17.56+5x what is the soloution to this equation what is x
skelet666 [1.2K]
Take 30.16-17.56. Theb divide by 5
4 0
3 years ago
Read 2 more answers
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