Solve the equation: x - 9 = -6 + 5 A. 21 B. 7 C. 14 D. 2

Mathematics

2 answers:

uysha [10]3 years ago

8 0

Answer:

I got 8, but I'm not sure.

Step-by-step explanation:

So I first did -6 + 5, and I got -1 as an answer. Then I did -1 plus 9 because both sides need to be equal. I wrote that x = 8 but that wasn't an option. I'm not sure if this was helpful and I'm really sorry if it's not.

kenny6666 [7]3 years ago

5 0

Answer:

The correct answer is 8. But in the option there is no option with answer 8

Step-by-step explanation:

The given expression is,

x - 9 = -6 + 5

RHS = -6 + 5 = -1

LHS = x -9

LHS = RHS

Therefore x - 9 = -1

x = -1 + 9 = 8

Therefore the correct answer is 8.

There is no option with correct answer. So we cant

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CD is perpendicular to AB and passes through point C5, 12).

Aleksandr-060686 [28]

Answer:

x intercept of CD = 17

Step-by-step explanation:

We are given a line AB with its end coordinates. and Another line segment CD which is perpendicular to AB. We have the coordinates of C , and we are asked to find the x intercept of line CD.

For that we need to find the equation of CD

we have coordinates of C , and hence if we have slope of CD we can find equation of CD

Slope of CD can be determine with the help of slope of AB as CD⊥ AB

So, the slope of CD $mCD = -\frac{1}{mAB}$