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2 years ago

7

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2 answers:

Likurg_2 [28]2 years ago

7 0

Answer:

um what?

Step-by-step explanation:

I don't understand this

Elena-2011 [213]2 years ago

4 0

:)

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(3a) You spend $72 on tapes and CDs. Each tape costs $8 and each CD costs $12.

Makovka662 [10]

Answer:

3a. 8t + 12c = 72

3b. t + c = 7

Step-by-step explanation:

number of tapes is t

number of Cds is c

so 8t + 12c = 72

and t + c = 7

so t = 7 - c

replace t = 7 - c in to the first equation

8(7 - c) + 12c = 72

56 - 8c + 12c = 72

4c = 72 - 56 = 16

c = 4

if c = 4, then t = 7 - c = 7 - 4 = 3

6 0

1 year ago

If jamie has $5 and purchases a soda for $1.15 how much change does jamie get back

ArbitrLikvidat [17]

Jamie get back:5-1.15
=$3.85

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3 years ago

Write 368% as a mixed number.

Allushta [10]

Answer:

$3\frac{17}{25}$

Step-by-step explanation:

368%

<em>convert to a fraction</em>

$\frac{368}{100}$

<em>divide top and bottom by 2</em>

<em /> $\frac{184}{50}$ <em />

<em>divide top and bottom by 2</em>

<em /> $\frac{92}{25}$ <em />

92/25 = 3 remainder 17

$3\frac{17}{25}$

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2 years ago

How many roots does a quadratic have if it does not cross the x-axis? = 2 real roots

steposvetlana [31]

False — if it doesn’t cross, it has no real roots.

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2 years ago

The ratio of 10 to pencil is 2/7 if you count 84 pencil how many pain would you expect to find

frosja888 [35]

How much pain would you find? hopefully none, since you'd have lots of pens and pencils :).

$\bf \cfrac{pens}{pencils}\qquad \cfrac{2}{7}\qquad 2:7\qquad \qquad \cfrac{\stackrel{pens}{p}}{\stackrel{pencils}{84}}=\cfrac{2}{7}\implies p=\cfrac{84\cdot 2}{7}$

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2 years ago