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arlik [135]
3 years ago
13

What do roller coasters, astronaut training, and a curved shape of a dam all have in common?

Mathematics
2 answers:
nikdorinn [45]3 years ago
8 0
They all have an arched shape
Darya [45]3 years ago
4 0
<span>They take advantage of the properties of parabolas to make theme parks fun, train astronauts, and cut construction costs!
Hope this helps!<span>
</span></span>
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Do both of them for 50 points
erastovalidia [21]

Answer:

1) 5.44, 2) 3.9

Step-by-step explanation:

1) a/b + 2b - a^2 when a = 1.4 and b = 0.2

plug in the values:

1.4/0.2 + 2(0.2) - (1.4)^2 = 7 + 0.4 - 1.96 = 5.44

2) a[b-2c]^3 - d/e when a = 2, b = -0.75, c = -1, d = 0, e = -12 5/7 (rewritten to -89/7 = 12.71)

again, plug in the values:

2[-0.75-2(-1)]^3 - 0/12.71 = 2[1.25]^3 - 0 = 2[1.95] = 3.9

5 0
2 years ago
Evan is trying to save $60 to buy new parts for his bike. He has saved 45% of what he needs so far.
Ber [7]

Answer:

27$

Step-by-step explanation:


8 0
2 years ago
Hello can you help me with this?
zavuch27 [327]

Answer:

x = 25.5

Step-by-step explanation:

suppose RS and MQ are parallel the sum of angle MRS and RMN would be 180 degrees

2x + x + x 78 = 180 add like terms then subtract 78 from both sides

4x = 102 divide both sides by 4

x = 25.5

3 0
3 years ago
X&lt;-5<br><br> Graphing the inequality
mr Goodwill [35]

Answer:

Draw the graph of line x=5 , which would be vertical line passing through (5,0) . Since x is less than but not equal to 5 , make it a dotted line and shade the region to the left.

Step-by-step explanation:

4 0
2 years ago
I don’t know to how to put this in the format they want it
worty [1.4K]

For this case, we decompose 240 into prime factors:

So, we have:

240 divided by 2

120 divided by 2

60 divided by 2

30 divided by 2

15 divided by 3

5 divided by 5

one

So, we have to, according to the right side of the decomposition shown:

240 = 2 * 2 * 2 * 2 * 3 * 5 = 2 ^ 4 * 3 * 5

Answer:

240 = 2 ^ 4 * 3 * 5

7 0
3 years ago
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