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masha68 [24]
2 years ago
15

What are two ways that the solution of a quadratic equation can be found using a graphing calculator?

Mathematics
1 answer:
Mandarinka [93]2 years ago
4 0

Answer:

If you look up "Solve Quadratic Equations with a Graphing Calculator" on yt, it'll help a bit.

Step-by-step explanation:

This video helped me with graphing calculators.

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Solve the right triangle below. Round sides to the nearest thousandth and angles to the nearest degree.
aalyn [17]

Answer:

Option 4, BC = 12.689, m∠A = 58°, and m∠C = 32°

Hope this helps!

4 0
3 years ago
If you have 20 coins worth $1.35, and you only have nickels and dimes, how many do you have of each coin?
ankoles [38]
N + d = 20....n = 20 - d
0.05n + 0.10d = 1.35

0.05(20 - d) + 0.10n = 1.35
1 - 0.05d + 0.10d = 1.35
-0.05d + 0.10d = 1.35 - 1
0.05d = 0.35
d = 0.35/0.05
d = 7 <==== 7 dimes

n + d = 20
n + 7 = 20
n = 20 - 7
n = 13 <=== 13 nickels
5 0
3 years ago
Martha is late for class, so she races her 75 kg body up a 4.0 meter flight of stairs in only 2.3 seconds. What is Martha’s powe
vovangra [49]

Answer:

1.3\cdot 10^3\text{ J}

Step-by-step explanation:

Power is defined by work over time. In physics, work can be defined as the energy transferred over from an applied force over some distance. As a formula:

W=Fd, where F = force applied and d = distance that force is applied over.

*It is worth noting that F must be parallel to the distance travelled. If it is perpendicular, no work is done, and if it is at an angle, find the parallel component and use that for F.

In this case, the force applied must counter the force of gravity on Martha, which is given by F_g=mg, where m = Martha's mass and g = gravitational constant 9.8 m/s/s. Therefore, F_g=75\cdot 9.8=735\text{ N}. Since she raises her body 4.0 meters, the work done must be W=Fd=735\cdot 4=2940\text{ J}.

Since power is equal to work over time and t = 2.3 seconds, we have:

\displaystyle P=\frac{W}{t}=\frac{2940}{2.3}=\boxed{1278\text{ J}}\approx \boxed{1.3\cdot 10^3\text{ J}} (to two significant figures)

7 0
1 year ago
23/50 equals what percent
-BARSIC- [3]
It is 46% I believe .
3 0
3 years ago
Read 2 more answers
4. You have $3,000 and want to double it in 5 years. What rate of return must your
VladimirAG [237]

Answer:

4.3% , 645 ÷ 5 = 129, 4.3% of 3000 is 129

Step-by-step explanation:

7 0
3 years ago
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