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victus00 [196]
3 years ago
11

Given m||n find the value of x (7x-4) (5x+10)

Mathematics
2 answers:
Ad libitum [116K]3 years ago
8 0
Here’s the answer hope it helped :)

Keith_Richards [23]3 years ago
4 0

Answer:

EITHER x = 7

OR x = 14.5

Step-by-step explanation:

When you have parallel lines and there's a third line crossing them, that makes 8 angles. 4 of these angles are ALL THE SAME MEASURE. and the other 4 angles are another number, but also ALL THE SAME MEASURE. And the two numbers add up to 180.

We kind of need to know where in the lay out of all 8 angles where are the ones you are working on. Because they are either the SAME VALUE or THEY ADD UP TO 180°

If they are the same, you set them equal to each other:

7x - 4 = 5x + 10

Subtract 5x

2x - 4 = 10

Add 4

2x = 14

Divide by 2

x = 7

OR

They add up to 180°

7x - 4 + 5x + 10 = 180

Combine like terms

12x + 6 = 180

Subtract 6

12x = 174

Divide by 12

x = 174/12 = 14.5

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ludmilkaskok [199]
The answer is 21 + 4x.


You find this answer by adding up all the sides.
9+12+4x= 21+4x ... you don't add 4x because it has a variable that we do not know of the value.
3 0
3 years ago
Please help I really need an answer anything would help! :)
Romashka-Z-Leto [24]

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Step-by-step explanation:

6 0
3 years ago
Simplify (3a^4-2a^2+5-10)-(2a^4+4a^2+5a-2)
katrin [286]

Answer:

Step-by-step explanation:

3a^4 -2a^2 + 5 - 10 -(2a^4 +4a^2 + 5a -2)

as given.. i'm wondering if the 5 in the first group is really 5a.. hmmm

I'm guessing that it is...  soooo distribute the minus sign

= 3a^4 - 2a^2 +5a -10  -2a^4 -4a^2 -5a +2

= a^4 -6a^2 -8   :)  voila that's your answer

7 0
3 years ago
50 points!!!!!!!!!!!!
igomit [66]

Answer: the first one .00000000058

Step-by-step explanation:

8 0
1 year ago
Read 2 more answers
Please hurry I’m being timed! (50 pts)
photoshop1234 [79]

Answer:

A

Step-by-step explanation:

An excluded value is any value of x that makes the denominator of the rational expression zero as this would make the expression undefined.

For expression A

\frac{x-3}{x^2-4}

The denominator will be zero when x² - 4 = 0

x² - 4 is a difference of squares, thus

(x - 2)(x + 2) = 0

x - 2 = 0 ⇒ x = 2

x + 2 = 0 ⇒ x = - 2

The excluded values of x are x = ± 2 ⇒ A

8 0
3 years ago
Read 2 more answers
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