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Mathematics

2 answers:

natali 33 [55]3 years ago

8 0

Answer:

the area is 72

Step-by-step explanation:

Burka [1]3 years ago

5 0

Area is base x height
12 x 6 = 72
the area is 72 in^2

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Find the sum or difference<br> (4y + 3) - (y -2)

kondor19780726 [428]

Answer:

3y+5

Step-by-step explanation:

You will have to distribute the negative to (y-2).

4y+3-y+2

3y+5

7 0

3 years ago

Read 2 more answers

If you have 60 and get 45 as discount how much the percentage

WINSTONCH [101]

Let x% be the percentage
60×(1-x%)=45
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x=25%

7 0

4 years ago

When (81x^2/7) (2/9x^3/7) is simplified, it can be written in the form ax^b where a and b are real numbers. Find ab.

larisa86 [58]

Answer:

In improper form your solution will be $\frac{90}{7}$ . As a mixed fraction it will be $12\frac{6}{7}$ .

Step-by-step explanation:

The first thing we want to do here is to simplify this expression. After doing so, " a " and " b " should be multiplied to result in a possible improper fraction,

$\left(81x^{\frac{2}{7}}\right)\:\left(2/9x^{\frac{3}{7}}\right)\:$ - Apply exponential rule " $\:a^b\cdot \:a^c=a^{b+c}$ "

= $81\cdot \frac{2}{9}x^{\frac{2}{7}+\frac{3}{7}}$ - Combine fractions $\frac{2}{7}$ and $\frac{3}{7}$

= $81\cdot \frac{2}{9}x^{\frac{5}{7}}$ - Multiply the fractions, and simplify further

= $\frac{162x^{\frac{5}{7}}}{9}$ = $18x^{\frac{5}{7}}$ - This is out simplified expression

Now that we have this simplified expression, we can see that a = $18$ , and b = $\frac{5}{7}$ . Therefore, multiplying the two we should receive the improper fraction as follows,