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rosijanka [135]
3 years ago
9

What is the answer to 13/4 - 5/8=

Mathematics
1 answer:
solmaris [256]3 years ago
6 0
In order to subtract one fraction from another, we need to make the denominator the same in both fractions.  The lowest common denominator is 8, because 4 is a factor of 8.

In order to make the denominators the same, multiply both the numerator and denominator of 13/4 by two.  This keeps the value of the fraction the same, but will equate the denominators.

\frac{13*2}{4*2} = \frac{26}{8}

At this point, we can simply subtract 5/8 from 26/8.

\frac{26}{8}- \frac{5}{8} =  \frac{21}{8}

21/8 cannot be simplified, so it is the answer.
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What is the value of (–7 + 3i) – (2 – 6i)
Sidana [21]
((–7) + (3 + i)) - (2 - (6 + i)) =-9 + 9 i
3 0
3 years ago
Write an equation to math the vertical line shown
Roman55 [17]

Answer:

x=1

Step-by-step explanation:

We know this, because the value of x is always constant, no matter the y-value. So, the equation is x=1.

Hope this helped!

3 0
3 years ago
Read 2 more answers
2.the solution set of x +y =5 and x-y =3
Nataliya [291]

Answer:

Check the solution below

Step-by-step explanation:

2) Given the equation

x +y =5... 1 and

x-y =3 ... 2

Add both equations

x+x = 5+3

2x = 8

x = 8/2

x = 4

Substitute x = 4 into 1:

From 1: x+y = 5

4+y= 5

y = 5-4

y = 1

3) Given

x+3y =15 ... 1

2x+7y=19 .... 2

From 2: x = 15-3y

Substitute into 2

2(15-3y)+7y = 19

30-6y+7y = 19

30+y = 19

y = 19-30

y = -11

Substitute y=-11 into x = 15-3y

x =15-3(-11)

x = 15+33

x = 48

The solution set is (48, -11)

4) given

x/2 +y/3 =0 and x+2y=1

From 1

(3x+2y)/6 = 0

3x+2y = 0.. 3

x+2y= 1... 4

From 4: x = 1-2y

Substutute

3(1-2y) +2y = 0

3-6y+2y = 0

3 -4y = 0

4y = 3

y = 3/4

Since x = 1-2y

x = 1-2(3/4)

x = 1-3/2

x= -1/2

The solution set is (-1/2, 3/4)

5) Given

5.x=1/2 and y =x +1 then solution is

We already know the vkue of x

Get y

y= x+1

y = 1/2 + 1

y = 3/2

Hence the solution set is (1/2, 3/2)

6) Given

3x +y =5 and x -3y =5

From 3; x = 5+3y

Substitute into 1;

3(5+3y)+y = 5

15+9y+y = 5

10y = 5-15

10y =-10

y = -1

Get x;

x = 5+3y

x = 5+3(-1)

x = 5-3

x = 2

Hence two solution set is (2,-1)

6 0
2 years ago
Find the multiplicative inverse of -2 in mod 7<br>​
Elis [28]

Answer:

  1. So something mod 7 is -2
  2. Lets consider what mod does as a commands: If you have 7 and then mod it by 2 ie 7%2 you get 1
  3. Essentially mod is seeing how many times a # goes into the other number and finding the remainder.
  4. In this case we want the remainder of 2: -8%3 =-2
  5. note there is also a mathematical procedural way to solve this.
  6. Rate positively and give brainlist
6 0
3 years ago
12x+7&lt;−11 AND5x−8≥4012
Arte-miy333 [17]

Answer:

No solution

Step-by-step explanation:

Given: 12x+7 and  5x-8\geq 40

Solve both inequality separately.

12x+7              Subtraction property of inequality

12x

12x

x

x

and

5x-8\geq 40               Addition property of inequality

5x\geq 40+8

5x\geq 48

x\geq \dfrac{48}{5}

Hence, the solution of the compound inequality intersection of both solutions.

Please find attachment for number line solution.

No solution

8 0
3 years ago
Read 2 more answers
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