Whats The common denominator fractions for 1/2 and 1/4

Answers

Answer 1

Answer: 4, you can change 1/2 to 2/4

Answer 2

Answer: 4 because 2 can be 4 and 4 is just 4 itself

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I need help with 18 and 19 please

Answers

18) Angle WZY = 75/2 = 37.5(Angle subtended by an arc on any point on a circe is half the angle subtended at centre)
19) r = 4 ft
Area of the whole circle = (pi)r^2= 22/7 *4*4 = 50.28
Area of the sector = 75/360*50.28= 97.77 ft^2

1) 5x-2y=4. 2) 3x-5y=13 x-2y=5
3x+y=9

Answers

$\left\{\begin{array}{ccc}5x-2y=4\n3x+y=9&/\cdot2\end{array}\right\n+\left\{\begin{array}{ccc}5x-2y=4\n6x+2y=18\end{array}\right\n----------\n.\ \ \ \ \ 11x=22\ \ \ \ /:11\n.\ \ \ \ \ \ \ x=2\n\n3\cdot2+y=9\n6+y=9\ny=9-6\ny=3\n\nAnswer:x=2;\ y=3$

$\left\{\begin{array}{ccc}3x-5y=13\nx-2y=5\end{array}\right\n\left\{\begin{array}{ccc}3x-5y=13\nx=2y+5\end{array}\right\n\nsubstitute:\n\n3(2y+5)-5y=13\n6y+15-5y=13\ny=13-15\ny=-2\n\nx=2\cdot(-2)+5=-4+5=1\n\nAnswer:x=1;\ y=-2.$

It's not b please help me

Answers

the answer is C. all you have to do is subtract the exponents

To divide variables, it is subtraction!

So, $a^3 - a^2 = a$

$b^2 - b = b$ . So in conclusion your answer is C. ab. Hope this helped!

If ab = 10 and a2 + b2 = 30, what is the value of
(a + b)^2?

Answers

Answer: (a + b)² = 50

Step-by-step explanation:

(a + b)² = (a + b)(a + b)

= a² + ab + ab + b²

So, (a + b)² = a² + b² + 2ab

Then substitute the value of ab and (a² + b²)

(a + b)² = 30 + 2(10)

= 30 + 20

Therefore, (a + b)² = 50

ab=10
a^2+b^2=30
((a+b)^2=a^2+2ab+b^2=a^2+b^2+2*10=30+20=50

F (x)= 5x-14 G (x)= 12x+8 H (x)= 62x-54 Dadas las funciones resolver las siguientes operaciones a. F (x)+ G (x) b. G (x)- (H (x)-F (x)) c. (G (x)-F (x)) (H (x)+G (x) d. (F (x)-H (x))/ (G (x)+ F(x) e. G (x) / H (x9

Answers

Answer:

a) $17\cdot x -6$ , b) $-45\cdot x +48$ , c) $518\cdot x^(2) +1306\cdot x -1012$ , d) $(-57\cdot x +40)/(17\cdot x -6)$ , e) $2\cdot \left((3\cdot x + 2)/(31\cdot x - 27) \right)$