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Vika [28.1K]
3 years ago
5

What are the solutions of the equation 9x4 - 2x2 - 7 = 0? Use u substitution to solve.

Mathematics
1 answer:
zaharov [31]3 years ago
4 0

Answer: this is what i got hope this helped i took a sceernshot of it

Step-by-step explanation:

ples make brainly

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A bicyclist races on a bicyclist with 13-inch-radius wheels. When she is traveling at a speed of 37 ft/sec, how many revolutions
drek231 [11]
Radius of a wheel = 13 inch
= 1.08333 ft
circumference of a wheel = 2×pi×r^2
= 2 × (22/7) × 1.08333^2 ft
= 2 × (22/7) × 1.1736 ft
= (44/7)×1.1736 ft
= 51.6384/7 ft
= 7.3769142857 ft
distance covered in one minute = 37 × 60 ft/min
= 2220 ft/min
now, revolution per minute = 2220 / 7.3769142857
= 300.93884
therefore her wheels are making 300.93884 revolutions per minute
8 0
3 years ago
Kiran and Clare live 24 miles away from each other along a rail trail. One Saturday, the two friends started walking toward each
vivado [14]

Answer:

They would be 44.6 miles apart

Step-by-step explanation:

Here, we want to calculate how far they will be in 1 hour

Mathematically;

Distance = speed * time

In 1 hour, Kiran would have traveled a distance of 3 * 1 = 3 miles

While Clare would have traveled a distance of 3.4 * 1 = 3.4 miles

Now, we want to calculate how far apart they would be

On the 24 miles trail, Kiran would be at a distance of 21 miles to the other end

On the 24 miles Claire would be at a distance of 20.6 miles

So how far apart they would be is

24 miles + 20.6 miles = 44.6 miles

3 0
2 years ago
Samantha deposited $300 in a savings account. The account earns 3.5% interest compounded annually. She makes no more deposits an
kifflom [539]

Answer:

200

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Karris ran 8/18 of a kilometer and cycled 9/18 kilometers of a race. How many kilometers was the race in all?
Snowcat [4.5K]

Answer:

17

Step-by-step explanation:

Add 8 and 9 together .

6 0
3 years ago
Easy point to earn
jeka57 [31]
Yeah that's correct
3 0
3 years ago
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