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Goshia [24]
3 years ago
10

You bought a magazine for $5 and four erasers. You spent a total of $25. How much did you spend on erasers?

Mathematics
1 answer:
Gelneren [198K]3 years ago
6 0
You spent $20 total on erasers, and $5 per eraser. I hope this helps you!

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Please help! this is a geometry question.
Phantasy [73]

Answer:

C

Step-by-step explanation:

The ratio is 1:4 so 1 of the object equals 4 of the scale drawing

30*4=120^2 cm

4 0
3 years ago
Alexandra packs boxes of envelopes into a large box the volume of each box of envelopes is 1200 cubic centimeters which is the b
ivanzaharov [21]
You would do 5 x 4 then it will give you 20. after that you will multiply 20 x 1200 and it would give you 24000. (p.s when you multiply 5 x 4 you are finding the # of the boxes
4 0
3 years ago
Read 2 more answers
A water tank can be filled by an inlet pipe in 6 6 hours. it takes 4 4 times as long for the outlet pipe to empty the tank. how
enot [183]
To fill:
6 hours  = 1 tank
1 hour = 1/6 tank

To drain:
It takes 4 times as long, therefore 4 x 6 = 24
24 hours = 1 tank
1hour = 1/24 tank

If both pipes are open 
1 hour = 1/6 - 1/24 = 1/8 tank
1/8 tank = 1 hour
8/8 tank = 1 x 8 hour
1full tank = 8 hours
3 0
3 years ago
Please help me it’s due tonight
Andreas93 [3]
Wait what grade r u in
5 0
3 years ago
How to do the problem
ruslelena [56]

Answer:

1.) x = 14.96ft

2.) The shorter leg is 6 meters

Step-by-step explanation:

1.) a^2 + b^2 = c^2

  • a and b = legs of the triangle
  • c = hypotenuse the longest side

15ft^2 + x^2 = (2x +1)^2

  • 225 + x^2 = (2x^2 + 1^2)
  • 225 = 2x^2 + 1 - x^2
  • 225 = x^2 + 1
  • 225 - 1 = x^2 +1 - 1
  • √224 = √x^2
  • x = 14.9662...

2.) Longer leg a = x+2,  shorter leg b = x, Hyp. c= 2x-2

Equation:

  • (x+2)^2 + x^2 = (2x-2)^2

Solve:

  • (x+2)(x+2) + x^2 = (2x-2)(2x-2)
  • x^2 + 4x + 4 + x^2 = 4x^2 - 8x +4
  • 2x^2 + 4x + 4 = 4x^2 - 8x +4
  • 2x^2 + 4x + 4 - 4x^2 +8x - 4 = 4x^2 - 4x^2 - 8x + 8x + 4 - 4
  • -2x^2 + 12x = 0
  • 2x (-x + 6) = 0

Answers:

  • 2x = 0
  • -x + 6 = 0
  • <u>x=0 -or- x=6</u>

<u>Since x cannot equal 0 due to the known length of the triangle needs to be more than 0 the answer for x equals 0.</u>

<u>B=6</u>

Check:

  • A = x + 2: A= 6 +2 = 8
  • B= 6
  • C = 2x -2: C= 2(6) -2 = 10

8^2 + 6^2 = 10^2

  • 64 + 36 = 100
  • 100= 100
5 0
3 years ago
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