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4 years ago

...Help Please...question in the file.

Mathematics

1 answer:

Snezhnost [94]4 years ago

7 0

$3^{-3}= \frac{1}{3^3}= \frac{1}{27} \\ \\ 3^{-2}= \frac{1}{3^2}= \frac{1}{9} \\ \\ 3^{-1}= \frac{1}{3^1}= \frac{1}{3} \\ \\3^{0}=1 \\\\ 3^1=3\\\\3^2=9\\\\3^3=27$

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Please Answer ASAP!!! :)<br> .-. .-. .-. .-. .-.

ArbitrLikvidat [17]

Answer:

Positive

Step-by-step explanation:

Looking for - r/2

Having that negative in front is basically saying

-1 * r/2

Based on where r is it is negative.

-1 × -r thus making the answer going to be positive due to negative × negative = positive

6 0

3 years ago

#10) Cross multiply and divide to solve for x*<br> 2/5 = X/70

Annette [7]

Answer:

28=x

Step-by-step explanation:

2/5=x/70

(70/1)(2/5)=x/70(70/1)

here you cancel 70 into 5 to get 14 and on the other side cancel both the 70s

14*2=x

28=x

4 0

3 years ago

Read 2 more answers

Multiply and simplify

sleet_krkn [62]

Answer:

$\Huge\boxed{2x^3+5x^2-7x+20}$

Step-by-step explanation:

$\text{Use FOIL:}\\\\(a+b)(c+d)=ac+ad+bc+bd$

$(x+4)(2x^2-3x+5)\\\\=(x)(2x^2)+(x)(-3x)+(x)(5)+(4)(2x^2)+(4)(-3x)+(4)(5)\\\\=2x^3-3x^2+5x+8x^2-12x+20\\\\\text{combine like terms}\\\\=2x^3+(-3x^2+8x^2)+(5x-12x)+20\\\\=2x^3+5x^2-7x+20$

4 0

3 years ago

(9k+6)(4k+5) solve for k

Ghella [55]

Answer:

9k+6+4k+5=180°

13k=180-11=169°

k=13°

3 0

2 years ago

Abby is using ribbon to tie bouquets of flowers. She has 3 meters of ribbon. After

mrs_skeptik [129]

The answer is 296.
explanation-
1 meter = 100 centimeters
so 3 meters would equal 300 cm
now 300-4 = 296.
which would be how much she used

8 0

3 years ago