What expressions have a value of 16/81

Mathematics

1 answer:

Flura [38]3 years ago

7 0

Answer:

(2/3)⁴, (4/9)² apply to 16/81

Step-by-step explanation:

16/81

8 * 2/27 * 3

4 * 2 * 2/9 * 3 * 3

2 * 2 * 2 * 2/3 * 3 * 3 * 3

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4x + y = 2

kkurt [141]

Cancel by elimination
4x+y=2
x-y=3
5x=5 because the Ys cancel out because it is positive and negative
x=1 when you divide by 5 on both sides to find x
then plug 1 in for x in a equation then solve
4(1)+y=2
4+y=2
y=-2 when you subtract 4 on both sides
(1,-2)

4 0

3 years ago

PLEASE ANSWER + BRAINLIEST!! Use the quadratic formula to solve. 3x^2 = 5x

ra1l [238]

The quadratic formula is:

$\frac{-b \pm \sqrt{b^2-4ac} }{2a}$

To solve the equation using the quadratic formula, we must put it in $ax^2+bx+c$ form.

$3x^2 - 5x + 0 = 0$

Now plug a, b, and c into the formula and solve:

$\frac{5 \pm \sqrt{25 - 4(3)(0)} }{6}$

Simplify:

$\frac{5 \pm \sqrt{25-0} }{6}$

$\frac{5 \pm 5}{6}$

x = $\frac{10}{6}$ or 0

Reduced, the answer is:

x = 5/3 or 0

6 0

4 years ago

(2x + 30) (4x – 90° What value for x will show that lines / and m ar parallel?

goldenfox [79]

Answer:

d. 60

Step-by-step explanation:

$(2x + 30) \degree = (4x - 90) \degree \\ (exterior \: alternate \: \angle s) \\ \\ 2x + 30 = 4x - 90 \\ \\ 30 + 90 = 4x - 2x \\ \\ 120 = 2x \\ \\ x = \frac{120}{2} \\ \\ x = 60$