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lianna [129]
2 years ago
11

Please helpppppppppppppppppppppppppppppppppppp

Mathematics
2 answers:
Kay [80]2 years ago
7 0

Answer:

(THIRD/FOURTH QUESTION): 4,000,000/4,096,000,000

Step-by-step explanation:

Third:

10x10x10x10x10= 100,000

100,000x40= 4,000,000

Fourth:

40x40x40x40x40x40= 4,096,000,000

Pani-rosa [81]2 years ago
6 0

Step-by-step explanation:

  • (2×10^8)(2×10^-2)
  • 4×10^8+(-2)
  • 4×10^6

<h3>stay safe healthy and happy.</h3>
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Line AB and line CD intersect at point E, with point E between A and B and between C and D. Which rays are opposite rays?
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Step-by-step explanation:

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3 0
3 years ago
There are 158 students registered for American History classes. There are twice as many students registered in second period as
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There are 28 students in first period and 56 students in sceond period and 74 students in third period

<em><u>Solution:</u></em>

Let the number of students in first period be "x"

Let the number of students in second period be "y"

Let the number of students in third period be "z"

<em><u>There are 158 students registered for American History classes.</u></em>

Therefore,

x + y + z = 158 ---------- eqn 1

<em><u>There are twice as many students registered in second period as first period</u></em>

number of students in second period = twice of number of students in first period

y = 2x ------- eqn 2

<em><u>There are 10 less than three times as many students in third period as in first period</u></em>

number of students in third period = 3 times number of students in first period - 10

z = 3x - 10 ------ eqn 3

<em><u>Substitute eqn 2 and eqn 3 in eqn 1</u></em>

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<em><u>Substitute x = 28 in eqn 2</u></em>

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Thus there are 28 students in first period and 56 students in sceond period and 74 students in third period

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