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vlabodo [156]
4 years ago
12

Expand the brackets 1/2(4y-2)

Mathematics
2 answers:
GalinKa [24]4 years ago
8 0

Answer:

2y-1

Step-by-step explanation:

1/2(4y-2)=2y-1

hichkok12 [17]4 years ago
8 0
2y - 1

1/2 X 4y = 2y
1/2 X 2 = 1

Therefore is 2y - 1
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There are 120 minutes in 2 hours .how many minutes arethere in 5 hours?
laiz [17]
Hey there the answer would be 300 minutes
4 0
4 years ago
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A used car dealer sells SUVs and cars. Of all the vehicles, 90% are cars. Of all the vehicles 40% are red cars. What is the prob
AleksAgata [21]

Answer:

44.4%

Step-by-step explanation:

To calculate this, we proceed as follows.

we use the probability equation below;

P(A|B) = P(A and B) / P(B)

Applying the above to the scenario at hand;

P(red | car) = P(red and car) / P(car)

P(red and car) = 40% or simply 40/100 = 0.4

P(car) = 90% = 90/100 = 0.9

P(red | car) = 0.4/0.9

P(red | car) = 0.4444 which is = 44.44% ; to the nearest tenth of a percent = 44.4%

4 0
3 years ago
Calculamos la fuerza de atracción gravitatoria entre dos cuerpos de 12kg y 30kg separados 50cm
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3 0
3 years ago
Find the values of x and y.
vova2212 [387]

Look at the picture.

We have the equation (1) 12x + 4y = 40.

We know, the sum of the acute angles in a right triangle is 90°.

Therefore we have the equation (2) (12x + 4y) + (17x - y) = 90

Substitute (1) to (2):

40 + 17x - y = 90        <em>subtract 40 from both sides</em>

17x - y = 50   (3)

We have the system of equations:

\left\{\begin{array}{ccc}12x + 4y = 40&|:4\\17x-y=50\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3x + y = 10\\17x-y=50\end{array}\right}\ \text{add both side of equations}\\.\qquad20x=60\qquad|:20\\.\qquad x=3

Substitute the value of x to (3)

17(3)-y=50\\51-y=50\qquad|-51\\-y=-1\to y=1

Answer: x = 3 and y = 1.

4 0
3 years ago
4-515x + 2) = -36<br> How do I solve this problem
Alexeev081 [22]

Answer:

21/256 or 0.082 (approx.)

Step-by-step explanation:

4 - 515x + 2 = - 36

or, -515x = -36-2-4

or, 515x = 42 [multiplying with (-1) in both sides]

or, x = 42/515

or, x = 21/256 = 0.082

6 0
3 years ago
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