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skelet666 [1.2K]
3 years ago
7

How do I do this problem? Cookies are on sale! Today each cookie costs $0.75 less than the normal price! Right now i you buy 7 o

f them, it will only cost $2.80!
Write an equation to determine the normal price of each cookie (c)

Find the normal price of each cookie
Mathematics
2 answers:
Oxana [17]3 years ago
6 0

could you help simplify the equation? Im still trying to figure it out

Monica [59]3 years ago
3 0
2.80/7=.4 then add .75 .40+.75=1.15 each cookie is 1.15$
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What is the quotient of 3.12 x 108 and 2.6 x 105 expressed in scientific notation?​
Gnoma [55]

Answer:

1.2 * 10^3

Step-by-step explanation:

3.12 * 10^8

=========

2.6 * 10^5

Start by doing 3.12 / 1.6 = 1.2 and that is the correct number of sig digs.

Now get the power on the 10. When dividing, the powers subtract.

10^(8 - 5)

10^ 3

The answer is 1.2 * 10^3

7 0
3 years ago
What is the product of − 3/11 and − 2/15? please explain.
emmainna [20.7K]

ANSWER

The product is

\frac{2}{55}

EXPLANATION

To find the product of

-  \frac{3}{11}

and

\frac{ - 2}{15}

means we should multiply the two fractions.

We multiply to obtain,

-  \frac{3}{11}  \times  -  \frac{2}{15}

=  -  \frac{3}{11}  \times  -  \frac{2}{3 \times 5}

Cancel the common factors:

=  -  \frac{1}{11}  \times  -  \frac{2}{5}

Now, multiply the numerators separately and the denominators too separately.

=  \frac{ - 1 \times  - 2}{11 \times 5}

This simplifies to,

= \frac{2}{55}

4 0
3 years ago
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