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alex41 [277]
2 years ago
11

If 12+15=7 11+14=5 18+25=13 what is 28+36 =?

Mathematics
2 answers:
Furkat [3]2 years ago
4 0

Answer:

14

Step-by-step explanation:

you only add the last numbers

salantis [7]2 years ago
3 0

Answer:

the answer is 44

Step-by-step explanation:

28+36=64

64-20=44

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3 0
3 years ago
I need help please and thank you
BartSMP [9]

Answer:

  3.33×10⁴

Step-by-step explanation:

You can use the hint, or you can use a common exponent. Here is the latter case.

  (3.9×10⁴) -(5.7×10³) = (3.9×10⁴) -(0.57×10⁴) = (3.9 -0.57)×10⁴

  = 3.33×10⁴

_____

With a little practice, you can see the effect on exponents of moving the decimal point. Here, we have ...

  5.7×10³ = (0.57×10)×10³ = 0.57×(10×10³) = 0.57×10⁴

__

When adding or subtracting in scientific notation, all that is required is that the exponents of all the numbers be the same. The hint says make all the exponents be 0. Above, we have chosen to make them all be 4. You could also use 3:

  (3.9×10⁴) -(5.7×10³) = (39×10³) -(5.7×10³) = (39 -5.7)×10³

  = 33.3×10³ = 3.33×10⁴

6 0
3 years ago
Why am this point be labeled with two names; 1 1/2 and 3/2
kakasveta [241]
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5 0
3 years ago
The perimeter of a regulation singles tennis court is 210 feet and the length is 57 feet less than five times the width.
Marianna [84]

Answer:

Length = 24 and Width = 81

Step-by-step explanation:

Let Width be W

then Length = W-57

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=2 (W-57+W)= 210

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Then Length = 81-57 = 24

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4 0
3 years ago
Read 2 more answers
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