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3 years ago

Help I need these quick 8/5*(4/9)^-3

Mathematics

1 answer:

otez555 [7]3 years ago

8 0

Answer:

18.225

Step-by-step explanation:

You do the -3 power to 4/9 first then multiply by 8/5 to get your answer.

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F+0.2=−3 what does f equal

Sav [38]

f + 0.2 =-3

f = -3 -0.2

f = -3.2

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PtichkaEL [24]

(a) $x^{-5}$

(b) $3x^{-7}$

Solution:

To write each of the given expression in the form $ax^n$ :

(a) $\frac{x^3}{x^8}$

Using exponential rule: $\frac{a^x}{a^y}=a^{x-y}$

$$\frac{x^3}{x^8}=x^{3-8}$

$$\frac{x^3}{x^8}=x^{-5}$

(b) $\frac{6x}{2x^8}$

Divide numerator and denominator by the common factor 2, we get

$$\frac{6x}{2x^8}=\frac{3x}{x^8}$

Using exponential rule: $\frac{a^x}{a^y}=a^{x-y}$

$$=3x^{1-8}$

$$\frac{6x}{2x^8} =3x^{-7}$

Divide numerator and denominator by the common factor 7, we get

$$\frac{28x^6}{21x^2}=\frac{4x^6}{3x^2}$

Using exponential rule: $\frac{a^x}{a^y}=a^{x-y}$

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3 years ago

One side of an isosceles triangle is 2x + 1 ft long. The other two sides are both 34-1 ft long. The perimeter of the triangle is

trasher [3.6K]

Answer:

(3x-1) + (3x-1) + (2x+1) = 55

Step-by-step explanation:

1. 3x + 3x + 2x = 8x

2. -1 + -1 + 1 = -1

3. 8x -1 = 55

4. 8x = 55 + 1

5. 8x = 56/8

6. x = 7

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Answer:

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