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BlackZzzverrR [31]
2 years ago
6

Combine fractions and reduce (5b/4a) + (b/3a) – (3b/a)

Mathematics
1 answer:
EastWind [94]2 years ago
6 0

Answer:

3b/6a or b/3a

Step-by-step explanation:

(5b/4a) + (b/3a) - (3b/a)

(6b/7a) - (3b/a)

3b/6a or b/3a

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PLEASE HELPPP!! i need the answer quick please!
Temka [501]

Answer:

80

Step-by-step explanation:

Use the equation 180-(70 +30)

4 0
2 years ago
16x^2 - 49 when factored is ?
vaieri [72.5K]

Answer:

(4x-7)(4x+7)

Step-by-step explanation:

This is called the Difference of Two Squares (DOTS).

These are the conditions that must be met for DOTS to work:

•There must be 2 terms.

•They must be separated by a negative sign.

•Each term must be a perfect square.

First, you have to find 2 square numbers that times together to make 16.

4×4=16

As we want 16x², you just need to make the 4 become 4x:

4x times 4x equals 16x²

Then, find 2 squares that times together to make 49.

7×7=49

You can put the two squares into a bracket with the x variable first, then the number:

(4x-7)(4x+7)

In the brackets, you always put the negative sign in the first one and then the plus sign in the second one.

You can double check your answer by expanding it back out again using FOIL:

F-First

O-Outer

I-Inner

L-Last

Times the First two in the two brackets:

4x times 4x equals 16x²

Times the Outer two:

4x times 7 equals 28x

Times the Inner two:

-7 times 4x equals -28x

Times the Last two:

-7 times 7 equals -49

Form an equation:

16x²+28x-28x-49

The 28x cancel out to leave:

16x²-49

Hope this helps :)

3 0
3 years ago
Which of the following is a correct interpretation of the expression -7- (-11)?
Brilliant_brown [7]

Answer:

B. Start at -7 on the number line and move 11 to the right.

Step-by-step explanation:

<u>Given:</u>

  • - 7 - (-11) expression

We can add or remove only positive numbers on the number line to get it  correct, so we need to open the parenthesis. When evaluated we get:

-7- (-11) = - 7 + 11 = 4

<u>Correct interpretation of of this expression is:</u>

  • Start at -7 and add 11, thus move 11 points to the right, to get 4 as final point.

<u>Correct choice is:</u>

  • B. Start at -7 on the number line and move 11 to the right.

6 0
3 years ago
The number 1,134 is divisible by all of the following except
Rasek [7]

Answer:

1,134 is not divisible by 12

5 0
2 years ago
Read 2 more answers
when simplifying the expression y=(2x(x-3)(x-3))/(x-1)(x-3) do all of the x-3 s get cancelled or just one in the numerator and o
Ksju [112]

Answer:

Just one of the ones in the numerator and the one in the denominator

Step-by-step explanation:

7 0
3 years ago
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