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Bezzdna [24]
3 years ago
7

Simplify each expression 9 to the second power

Mathematics
1 answer:
olga_2 [115]3 years ago
4 0
9 to the 2nd power would = 81.
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Identify the area of the polygon that has vertices B(−3,−2), A(−5,2), T(−2,7), and H(0,5).
son4ous [18]

Answer: A = 21 units2

Step-by-step explanation: Please look at the picture below!

4 0
3 years ago
5 grams of salt is equal to (blank) kilograms of salt
Lyrx [107]
1 kilogram=1000 grams
divide both sides by 1000
1/1000 kilograms=1gram

5 grams=5 times 1/1000kilograms
5grams=5/1000kilograms=1/200kilograms
5grams= 5/1000kg=0.005kg

the answer is 0.005kg or 1/200kg

6 0
3 years ago
Read 2 more answers
(2/3)^3x(2/3)^4 <br> write as a single power, then evaluate.
kow [346]

Answer:

\frac{128}{2187}

Step-by-step explanation:

Using the rule of exponents

a^{m} × a^{n} = a^{(m+n)}

(\frac{2}{3}) ^{3} × (\frac{2}{3}) ^{4}

= (\frac{2}{3}) ^{(3+4)}

= (\frac{2}{3}) ^{7}

= \frac{2^{7} }{3^{7} }

= \frac{128}{2187}

6 0
3 years ago
Read 2 more answers
23^3 (-12)^3 +(-11)^3 without actually calculating cubes
Zigmanuir [339]

Answer:

9108

Step-by-step explanation:

23^3+(-12)^3+(-11)^3                              remove parentheses

= 23^3-12^3-11^3                                  group difference of two cubes

= (23-12)(23^2+23*12+12^2) + 11^3      factor difference of two cubes

= 11 (23^2+23*12+12^2-11^2)                factor ou 11

= 11(23(23+12) + (12+11)(12-11))              apply difference of two squares

= 11 (23*35+23*1)                                  factor out 23

= 11(23*(35+1))                                       simplify

= 11*23*36                                             convert 11*23 into difference of 2 squares                                                                    

= (17^2-6^2)*6^2                                   expand parentheses

= 102^2-36^2                                       evaluate squares

= 10404 - 1296                                     subtraction

= 9108

(no calculator required)

8 0
4 years ago
What the the probability of getting 2 heads when two coins are flipped 5 times?
baherus [9]

Answer: 18

Step-by-step explanation:

The probability of this event is 424=1/4. Then the probability of 5th toss is head is 1/2. Hence, in the end the answer is 14⋅12=18.

7 0
3 years ago
Read 2 more answers
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