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Helga [31]
3 years ago
15

Please help... 12! - 9^3

Mathematics
2 answers:
Naily [24]3 years ago
4 0

Answer:

-729

Step-by-step explanation:

-9^3 = -9 x (-9) x (-9) =

          -9x(-9) = 81

                   81x(-9)=-729

sattari [20]3 years ago
4 0
Your answer should be -729
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A vitamin C tablet contains 1/40 of a gram of vitamin C. You take 1&1/2 tablets Evry day. How many grams of vitamin C do u t
Alexxandr [17]

Answer:

Either 3/80 grams or 0.0385 grams

Step-by-step explanation:

1 tablet = 1/40 of a gram

1/40 of a gram = 1 ÷ 40 = 0.025 grams

1 tablet = 0.025 grams

1.5 tablets = x

1/1.5 = 0.025 / x                  Cross multiply

x*1 = 0.025 * 1.5                  Combine the factors

x = 0.0375 grams                Convert to a fraction

0.0375 = 3/80

8 0
3 years ago
Write an equation is point slope form of a line given that the slope is 2/3 and that the line
a_sh-v [17]
Y-y1=m(x-x1)
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6 0
3 years ago
Write the 5th term in the expansion of (5x-y/2)^7
Nezavi [6.7K]

Answer:

65625/4(x^5)(y²)

Step-by-step explanation:

Using binomial expansion

Formula: (n k) (a^k)(b ^(n-k))

Where (n k) represents n combination of k (nCk)

From the question k = 5 (i.e. 5th term)

n = 7 (power of expression)

a = 5x

b = -y/2

....................

Solving nCk

n = 7

k = 5

nCk = 7C5

= 7!/(5!2!) ------ Expand Expression

=7 * 6 * 5! /(5! * 2*1)

= 7*6/2

= 21 ------

.........................

Solving (a^k) (b^(n-k))

a = 5x

b = -y/2

k = 5

n = 7

Substituting these values in the expression

(5x)^5 * (-y/2)^(7-5)

= (3125x^5) * (-y/2)²

= 3125x^5 * y²/4

= (3125x^5)(y²)/4

------------------------------------

Multiplying the two expression above

21 * (3125x^5)(y²)/4

= 65625/4(x^5)(y²)

5 0
3 years ago
Find the slope of the line passing through the points (-5, 3) and (7, 9) ​
rodikova [14]

\sf{\red{Answer}}

\sf{m =  \frac{1}{2} }

\sf{\purple{Explanation}}

\sf{m =  \frac{y_{2}- y_{1}}{m_{2} - m_{1}} }

\sf{m =  \frac{9- 3}{7- ( - 5)} }

\sf{m =  \frac{6}{7 +  5} }

\sf{m =  \frac{6}{12} }

\sf{m =  \frac{1}{2} }

3 0
1 year ago
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Brums [2.3K]

The rule for a 270° counterclockwise rotation is (x, y) ---> (y, -x).

So if you rotated (-5,5) 270° counterclockwise around the origin the new coordinates would be (-5,-5).

Hope this Helps!!

6 0
3 years ago
Read 2 more answers
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