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frez [133]
2 years ago
6

John, Maya, and Zara have been picked to compete in the national track and field championships on behalf of their school. They c

ompeted against another local school squad. It took them 240.6 seconds to complete the task. How long did they each run if they took the same amount of time to complete the race? Calculate the answer and then solve the problem.
Mathematics
1 answer:
bagirrra123 [75]2 years ago
7 0

80.2

Step-by-step explanation:

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If Oscar the ostrich travels 126 miles in 3 hours on land, how fast does he travel?
Furkat [3]

Answer:

If Oscar the ostrich travels 126 miles in 3 hours . that means he travels 42 miles in 1 hour. so 42mph

8 0
3 years ago
Find the fifth roots of 243(cos 260° + i sin 260°)
Charra [1.4K]
<span>use De Moivre's Theorem:

⁵√[243(cos 260° + i sin 260°)] = [243(cos 260° + i sin 260°)]^(1/5)

= 243^(1/5) (cos (260 / 5)° + i sin (260 / 5)°)

= 3 (cos 52° + i sin 52°)

z1 = 3 (cos 52° + i sin 52°) ←← so that's the first root


there are 5 roots so the angle between each root is 360/5 = 72°

then the other four roots are:

z2 = 3 (cos (52 + 72)° + i sin (52+ 72)°) = 3 (cos 124° + i sin 124°)

z3 = 3 (cos (124 + 72)° + i sin (124 + 72)°) = 3 (cos 196° + i sin 196°)

z4 = 3 (cos (196 + 72)² + i sin (196 + 72)°) = 3 (cos 268° + i sin 268°)

z5 = 3 (cos (268 + 72)° + i sin (268 + 72)°) = 3 (cos 340° + i sin 340°) </span>
3 0
3 years ago
Answer ASAP for brainly
prohojiy [21]

Answer: 25

Step-by-step explanation: -5 x 25 + 13 = -112

5 0
2 years ago
Read 2 more answers
Blake and James are planning to go on a trip. Blake already has some money saved. She earns $96 more by working overtime. James
rosijanka [135]

Blake saved \bold{\$ 433.80}

Option - A

<u>SOLUTION: </u>

Given, Blake and James are planning to go on a trip.  

Blake already has some money saved.  

Let the amount saved by Blake be \$ n.

She earns \$96 more by working overtime.  

Then, total amount by Blake =\$(n+96)

James has \$ 53 more than 4 times the amount of money that Blake has saved.  

Then, total amount by James will be \$ 53+4 \times \$ n=\$(4 n+53)

If they have \$2,318 in all, we have to find how much money had Blake originally saved

Now, total amount = \$2318

\begin{array}{l}{\rightarrow \text { Amount by Blake }+\text { amount by James }=2318} \\\\ {\rightarrow \mathrm{n}+96+4 \mathrm{n}+53=2318 \rightarrow 5 \mathrm{n}+149=2318 \rightarrow 5 \mathrm{n}=2318-149 \rightarrow 5 \mathrm{n}=2169 \rightarrow \mathrm{n}=433.8}\end{array}

7 0
3 years ago
There are 25 students in a class, and 7 of them will
Elena-2011 [213]
By a Challenge that way It’ll be even
8 0
2 years ago
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