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spin [16.1K]
3 years ago
10

What is 65% of 80x please show your work. Remember the x

Mathematics
1 answer:
Flauer [41]3 years ago
4 0
Answer=52x

65%=65/100=.65

80x*.65=52x

60% of 80x is 52x
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I don’t understand how to do this problem. How would I solve it?
artcher [175]

Answer:

About 2.569 seconds

Step-by-step explanation:

To solve this problem, you can separate it into two half parabolas. The beginning part is initial upward rising. To calculate the amount of time that this part of the dive takes, you can use the formula v_f=v_o+at, where v_f is the final velocity, v_o is the initial velocity, a is the acceleration due to gravity, and t is the amount of time it takes. You know that the final velocity is 0, since the diver is reaching the terminal of their dive. Therefore, you can set up the following equation (assuming that the acceleration due to gravity is 32ft/s^2):

0=5+(-32)t

t=5/32 seconds

To find the height that this indicates the diver has risen, you can plug this time into the following formula: d=v_o t+\frac{1}{2}at^2

d=5(5/32)+\frac{1}{2}\cdot 32\cdot (5/32)^2\approx 1.172 feet

For the second part, you can use the equation d=v_o t+\frac{1}{2}at^2 again. Since the initial velocity for this part is 0, you can set up the following equation:

92+1.172=\frac{1}{2}\cdot 32 \cdot t^2

t \approx 2.413

Adding this to the time that the first part of the dive takes, you get a total of about 2.569 seconds. Hope this helps!

3 0
3 years ago
Hi please help meeee
Tresset [83]

Answer:

Step-by-step explanation:

The attachment will help you with your question:

4 0
3 years ago
-1.68j+1.24=13 need help thanks
s344n2d4d5 [400]

Answer:

-7

Step-by-step explanation:

-1.68j+1.24=13

-1.68j=13-1.24

-1.68j=11.76

j=11.76/-1.68

j=-7

6 0
3 years ago
Read 2 more answers
Kendra charges $11 to shovel a driveway. She shoveled 4 driveways on Saturday and then some more on Sunday. She made $143 for th
White raven [17]

Let number of driveways , she shoveled on Sunday = x

And for 4 driveways , Kendra charges = 4*11=44

Therefore,

143 = 44 + 11x

And that's the model for the given situation .

Subtracting 44 from both sides,

143-44 = 11x

99 = 11x

Dividing both sides by 11

x = 9

Therefore she shoveled 9 driveways on Sunday .

7 0
4 years ago
Read 2 more answers
Rachel really wants to purchase a new skateboard and her mother has agreed to give her a weekly allowance that she can save unti
Slav-nsk [51]

Answer:

Step-by-step explanation:

10x+ 150=220 is the equation for the second plan you subtract 150 from 220 to get 70 and divide that by 10 and you get 7 which is the number of weeks it'll take

220/25=x

So for this one it'll take 8.8 weeks to get enough money and you divide 220 by the amount which is 25 to get 8.8 the number of weeks I'll take

I dont understand what the second one is asking so sorry dude but I think that's right

4 0
3 years ago
Read 2 more answers
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