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Helen [10]
2 years ago
10

Emma has addressed seven invitations to her

Mathematics
2 answers:
Firlakuza [10]2 years ago
8 0

Answer:

12

Step-by-step explanation:

This can be solved by working backwards.

7 is one more than half the number of invitations.

Subtract 1.  6 is half the number of invitations.

Double.

12 is the full number of invitations.

Algebra (if you must!):

x = number of invitations

x/2 + 1 = 7

Subtract 1.

x/2 = 6

Multiply by 2.

x = 12

sweet-ann [11.9K]2 years ago
4 0

Answer:

12

Step-by-step explanation:

7-1=6

6x2=12

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Step-by-step explanation:

Simple interest is money you can earn by initially investing some money (a.k.a the principal). In return, a percentage (a.k.a the interest) of the initial money invested is added to the principal, this is what makes your initial investment grow.

The equation for simple interest is:

I = P x r x t

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