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ruslelena [56]
3 years ago
15

Can someone please answer these questions?

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

5.a) since the distance is 140km, and the time is 2hours, and we need the speed in km/h,  we have to divide the distance by time, and we will get the speed: s=d/t = 140km/2h = 70km/h

b) the distance is 43km, and the time is 30 minutes, which is 0,5hours, we do the same thing here, with given formula : s=d/t = 43km/0,5h = 86km/h

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Oof this is probably really simple to most of y'all but I'm out of it.
Lelechka [254]

Answers:

  • angle1 = 156 degrees
  • angle2 = 24 degrees

=======================================================

Explanation:

The two angles form a straight line, which is 180 degrees

Add up the angle expressions and set the sum equal to 180.

(angle1) + (angle2) = 180

(4x) + (x-15) = 180

(4x+x)-15 = 180

5x-15 = 180

5x = 180+15

5x = 195

x = 195/5

x = 39

We use that x value to find each missing angle

  • angle1 = 4x = 4*39 = 156 degrees
  • angle2 = x-15 = 39-15 = 24 degrees

Then notice how angle1+angle2 = 156+24 = 180 to verify the answer.

Side note: Angles that add to 180 are considered supplementary.

6 0
2 years ago
Please help me i don't understand what my answer should be . i'll give brianliest jus please help
AnnyKZ [126]

Answer:

Step-by-step explanation:

1. ABE bc the both have a right angle. plus when added together, they make a square which means they are the same.

2. id remember how to do the second one i am so sorry

6 0
2 years ago
Read 2 more answers
Shannon sells handmade wallets for $12 each.
Novosadov [1.4K]
I hope this helps you

3 0
3 years ago
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PLZ HELP AHHHHHHHHHHHHHHHHHHHHHHSimplify 3^4+(7^2−2^4)
Leokris [45]

3 \times 3 \times 3 \times 3 + (7 \times 7 - 2 \times 2 \times 2 \times 2)
That's all you need to do
8 0
3 years ago
Which shows the correct solution of the equation + so, when 6-30?
denis23 [38]

Answer:

-24

Step-by-step explanation:

rest 6 minus 30 and it give you -24

6 0
2 years ago
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