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antoniya [11.8K]
3 years ago
7

Identify the property of equality that makes the Equation 1 and Equation 2 equivalent

Mathematics
1 answer:
Otrada [13]3 years ago
6 0

Step-by-step explanation:

<u>To make both equivalent</u>.

For equation (I) multiply all through by 4

Now, from

x - 1/2 = x/4 + 3

it becomes

4(x) - 4(1/2) = 4(x/4) + 4(3)

--> 4x - 2 = x + 12.

This is your new equation (I) or you can call it equation (iii).

For equation (ii) multiply all through by 1 to make it equivalent to your new equation (I) or eqn (iii) if you wish.

Now from

4x - 2= x + 12

it becomes

1(4x) - 1(2) = 1(x) + 1(12)

--> 4x - 2 = x + 12

This is your new equation (ii) or you can call it equation (iv)

Therefore;

Equation 1 has to be multiplied by 4 and Equation 2 by 1 to make both equivalent.

New equation 1 is 4x-2=x+12

New equation 2 is 4x-2=x+12.

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What expression is equivalent to 4 to the power of 4 times 4 to the power of -9
pogonyaev
4^4 * 4^(-9) = 4^(4-9) = 4^(-5) or 1/(4^5)
5 0
2 years ago
Lol i need help again plzz
Len [333]
X would equal 81 because the square root of 81 is 9.

9 x 9 = 81
7 0
3 years ago
The measure of angle 3 is 42°. <br><br> What is the measure of angle 1 in degrees?
Svetradugi [14.3K]

Answer:

Angle 1 is 48°

Step-by-step explanation:

So angle 1 + angle 2 + angle 3 = 180°

Angle 2 = 90°

Angle 3 = 42°

180 - 90 - 42 =  48°

3 0
2 years ago
When 2(3/5 x + 2/3 y - 1/4 x -1 1/2 y + 3 )is simplified, what is the resulting expression?
vovangra [49]

Answer:

Simplifying  the expression: 2(\frac{3}{5}x+\frac{2}{3}y-\frac{1}{4}x-1\frac{1}{2}y +3) we get \mathbf{42x-100y-360}

Step-by-step explanation:

We need to simplify the expression: 2(\frac{3}{5}x+\frac{2}{3}y-\frac{1}{4}x-1\frac{1}{2}y +3)

First we will solve terms inside the bracket

2(\frac{3}{5}x+\frac{2}{3}y-\frac{1}{4}x-1\frac{1}{2}y +3)

Converting mixed fraction 1\frac{1}{2} y into improper fraction, we get: \frac{3}{2}y

Replacing the term:

2(\frac{3}{5}x+\frac{2}{3}y-\frac{1}{4}x-\frac{3}{2}y +3)

Now, taking LCM of: 5,3,4,2 we get 60

Now multiply 60 with each term inside the bracket

2(\frac{3}{5}x\times60+\frac{2}{3}y\times60-\frac{1}{4}x\times60-\frac{3}{2}y\times60 +3\times60)\\2(3x\times12+2y\times20-1x\times15-3x\times30-3\times60)\\2(36x+40y-15x-90y-180)

Now, combine like terms

2(36x-15x-90y+40y-180)\\2(21x-50y-180)

Now, multiply all terms with 2

42x-100y-360

So, Simplifying  the expression: 2(\frac{3}{5}x+\frac{2}{3}y-\frac{1}{4}x-1\frac{1}{2}y +3) we get \mathbf{42x-100y-360}

3 0
3 years ago
Find the missing probability. P(B)=720,P(A|B)=14 ,P(A∩B)=?
Ivan

Answer:

7/80

Step-by-step explanation:

Given that: P(B) = 7 / 20, P(A|B)= 1 / 4

Bayes theorem is used to mathematically represent the conditional probability of an event A given B. According to Bayes theorem:

P(A|B)=\frac{P(A \cap B)}{P(B)}

Where P(B) is the probability of event B occurring, P(A ∩ B) is the probability of event A and event B occurring and P(A|B) is the probability of event A occurring given event B.

P(A|B)=\frac{P(A \cap B)}{P(B)}\\\\P(A \cap B)=P(A|B)*P(B)\\\\Substituting:\\\\P(A \cap B)=1/4*7/20=7/80\\\\P(A \cap B)=7/80

6 0
3 years ago
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