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schepotkina [342]
2 years ago
7

hayden is planning a party he bakes 21 cookies if he plans to give each person 3 cookies how many people will be at his party

Mathematics
1 answer:
NikAS [45]2 years ago
4 0

Answer:

  7 people

Step-by-step explanation:

  (21 cookies)/(3 cookies/person) = 7 person

_____

If you're really challenged figuring this out, you can count out 21 of some object—such as pennies, scraps of paper, or even cookies—and deal them into piles of 3 each. Then count the piles. Working with actual physical objects can often give you mathematical insight not obtainable any other way.

Each pile subtracts 3 from the original amount. We use the arithmetic operation "division" to simplify repeated subtraction.

Knowing number facts such as 3×7 = 21 is very helpful to solving problems of this nature.

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Adrianna can read 7 pages in 10 minutes. At this rate,how many pages can she read in 25 minutes
Westkost [7]

Use a proportion. 7/10 = x/25. Multiply 10 by 2.5 to get 25. Similarly, multiply 7 by 2.5 to get 17.5. 17 1/2 pages.

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Rana's computer repair service charges $45/h. Bill's computer repair service charges a flat fee of $25 plus $18/h. Each company
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Step-by-step explanation:

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3 years ago
Factorise 15x² + 9xy + 3x
yarga [219]
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3 years ago
A.) write an exponential expression: let 10 be the base and an even number between 1 and 10, be the exponent.
AfilCa [17]

Answer:

  10^2 . . . . see below for additional information or versions of the answer(s)

Step-by-step explanation:

You seem to want 10^<em>exponent</em>, where <em>exponent</em> is an even single digit, not zero.

We choose <em>exponent</em> = 2, so your expression is ...

  10^2

__

There are several versions of expanded form. One uses exponents. In that form, the expression above <em>is the expanded form</em>.

Another uses multipliers of 1, 10, 100, 1000, and so on. In that form, the expression expands as ...

  10^2 = 1×100

Another expanded form uses individual digits of the expanded form with others set to zero

  10^2 = 100

The standard form is ...

  10^2 = 100.

_____

We suppose your exponential expression might have another multiplier, such as 2.98:

  • exponential expression: 2.98×10^2
  • standard form: 298
  • expanded form 1: 2×10^2 + 9×10^1 +8×10^0
  • expanded form 2: 2×100 +9×10 +8×1
  • expanded form 3: 200 + 90 + 8
6 0
3 years ago
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