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jeyben [28]
3 years ago
5

Which value of a below solves the equation: 3a +1=-a +3? (1) -6 (2) 8 (3) -1 (4) 5

Mathematics
1 answer:
natka813 [3]3 years ago
6 0

Answer:

None, the answer should be a=1/2

Step-by-step explanation:

Lets solve the system by ourselves.

Lets sum 'a' variable to both sides of equality sign.

We have

4a+1=3

Now lets subtract 1 to both sides of equality sign

4a=2

we obtain a=1/2.

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Blizzard [7]
The answer would be B and D
4 0
4 years ago
A) x and y are two numbers taken from the list below.
Masja [62]

Answer:

a)

i) we have the equation:

3*x - 2*y

We want to find a common multiple of 3 and 2.

One can be:

3*6 = 18

2*9 = 18

And both numbers 6 and 9 are on the list, then if we take:

x = 6, y = 9

we get:

3*6 - 2*9 = 18 - 18 = 0

The solution is x = 6, y = 9.

ii) The greatest possible value of:

3*x - 2*y

Will be when x is the largest value of the list (because it is on the positive term) and y is the smallest value on the list (because it is on the negative term)

then we need to have x = 10, y = 5

The value will be:

3*10 - 2*5 = 30 - 10 = 20

iii) Now we want to have the smallest value on x, and the largest one on y, then:

x = 5, y = 10

The smallest value of the equation will be:

3*5 - 2*10 = 15 - 20 = -5

B) We want to solve:

5*(a - 4*b)

when:

a = -7

b = 1/4

This is kinda easy, we just need to replace the variables in the equation to get:

5*(a - 4*b) = 5*(-7 - 4*(1/4)) = 5*(-7 - 4/4) = 5*-8 = -40

6 0
3 years ago
Lamar wanted to explain why the measure of angle 5 is equal to the sum of the measures of angles 1 and 3. Which geometry concept
andreyandreev [35.5K]

In this question, angle 5 and angle 2 are linear pair. And angles of linear pair are supplementary angles .

Therefore

\angle 5 + \angle 2=180

And sum of interior angles of a triangle is 180 degree, that is

\angle 1 + \angle 2 + \angle 3 =180

SInce both the equations have 180 in the right side, left side of both equations are equal too . That is

\angle 5 + \angle 2 = \angle 1 + \angle 2 + \angle 3

Which gives

\angle 5=\angle 1 + \angle 3

So the correct option is A .

5 0
4 years ago
Read 2 more answers
Evaluate the expression -(5/7)^0
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Answer:

1

Step-by-step explanation:

6 0
3 years ago
Pls just answer the question
kotegsom [21]

Answer:

1

Step-by-step explanation:

7 0
3 years ago
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