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strojnjashka [21]
3 years ago
10

2) BRAINLIEST + 10 + POINTS :D

Mathematics
1 answer:
elena55 [62]3 years ago
7 0

Answer:

c) 28

explanation :

In this sequence:

a1 = 2

a2 = 4

a3 = 6

a4 = 8

a5 = 10

and so on...

then

the sum from a2 to a5 is:

a2 +a3 + a4 + a5 = 4 + 6 +8 + 10 = 28

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Which vector below goes from (0,0) to (2,2)? <br><br> A. c<br><br> B. a<br><br> C. b<br><br> D. d
Vladimir [108]

Answer:

i say it's A.c

I hope it helped

6 0
3 years ago
at maximum speed, an airplane travels 1720 miles against th wind in 5 hours. Flying with the wind, the plane can travel the same
iragen [17]

Answer:

x = 387

Step-by-step explanation:

The wind acts in the opposite direction to the plane when the time is longer.

The wind acts in the same direction as the plane when the time is shorter.

Equation

d = r*t

Givens

  • d = 1720
  • x = plane's speed
  • y = wind speed
  • t1 = 5 hours
  • t2 = 4 hours.

Substitution

  • d = (x + y) * t
  • 1720 = (x + y) * 4
  • 1720 = (x - y) * 5

Since the two distances are the same, you can equate the right hand sides.

  • (x + y) * 4 = (x - y)*5              Remove the brackets.
  • 4x + 4y = 5x - 5y                  Add 5y to both sides
  • 4x + 4y + 5y = 5x - 5y + 5y  Combine all the terms.
  • 4x + 9y = 5x                          Subtract 4x from both sides
  • 9y + 4x - 4x = 5x - 4x           Combine
  • 9y = x

Now use one of the given equations with the distance

  • 1720 = (x + y)*4           Substitute 9y for x
  • 1720 = (9y + y) *  4      Combine
  • 1720 = 10y * 4             Multiply the right
  • 1720 = 40y                  Divide by 40
  • 1720/40 = 40y/40      Do the division
  • 43 = y                          y = wind speek
  • 9y = x                          x = 9*y  
  • 9*43 = x
  • x = 387 miles per hour.
4 0
3 years ago
CAN SOMEONE PLEASE HELP ME???<br> ↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓∵
nata0808 [166]

Answer:

it is number 3 (-1/5)

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
To start planning the rooms' floor plans, you draw them each to scale on large sheets of paper. You are going to use the scale 1
Gre4nikov [31]
480 is the answer I just took the test
8 0
3 years ago
G(-2)=-2(-2)2 + 3(-2)-5<br> g(-2) = -2(4) – 6-5<br> g(-2) =<br> g(0) =<br> 1<br> g(3) =
ziro4ka [17]

Answer:

g(-2)= -19

g(0)= -5

g(3)= -14

Step-by-step explanation:

5 0
3 years ago
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