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3 years ago

17. Which of the following equations is equivalent to 9x -12 = 36 ?

Mathematics

2 answers:

Alekssandra [29.7K]3 years ago

8 0

Answer:

Step-by-step explanation:

9x-12=36

9x=36+12

9x=48

pshichka [43]3 years ago

3 0

Answer:

Step-by-step explanation:

9x - 12 = 36

9x = 36 + 12

9x = 48

9x = 48 matches B, and doesn't match the others

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Complete the point slope equation of the line through (-5, 7) and (-4, 0).

IgorLugansk [536]

For this case we have that by definition, the point-slope equation of a line is given by:

$y = mx + b$

Where:

m: It's the slope

b: It is the cut-off point with the y axis

We have two points:

$(x_ {1}, y_ {1}): (- 5,7)\\(x_ {2}, y_ {2}): (- 4,0)$

We found the slope:

$m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {0-7} {- 4 - (- 5)} = \frac {-7} {-4 + 5} = \frac {-7} {1} = - 7$

Thus, the equation is of the form:

$y = -7x + b$

We substitute one of the points and find "b":

$0 = -7 (-4) + b\\0 = 28 + b\\b = -28$

Finally, the equation is:

$y = -7x-28$

Answer:

$y = -7x-28$

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3 years ago

Amaya is excited to go to the used video game store to buy a game system later today. The game system usually costs x dollars, b

Ksenya-84 [330]

Answer:

x(85/100)

Step-by-step explanation:

100-15 = 85

x(85/100)

5 0

3 years ago

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What is the solution to the equation?<br> -4 = 1<br> .<br> Enter your answer in the box.<br> X=

beks73 [17]

Step-by-step explanation:

I'm not sure about my answer

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3 years ago

How do I add fractions

vivado [14]

Step-by-step explanation:

1 Find common denominator (lower numbers)

2 add numerators(top numbers)

3 put the numerator over the denominator

ex 3/4+2/8

3x2=6,4x2=8

3/4=6/8

6/8+2/8=8/8 or 1

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2 years ago

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Hey! This is due at like 11 pm!

rewona [7]

Answer:

$7$

Step-by-step explanation:

Use the Pythagorean Theorem

$a^2 + b^2 = c^2$

$a$ and $b$ are either opposite or adjacent

$c$ is the hypotenuse.

1. Look for the right angle. (the little box). The right angle "points" to the hypotenuse. In this case, the hypotenuse is 25.

2. Because we know the hypotenuse is 25. We know that 24 is our adjacent. Meaning our missing side is the opposite.

3. Plug in the numbers. $24^2 + b^2 = 25^2$

4. Solve:

$24^2 + b^2 = 25^2$

$576 +b^2=625$

$b^2 = 625-576$

$b^2 = 49$

$\sqrt{b^2} = \sqrt{49}$

$b = 7$

Hope this helps! Lmk if you have questions.

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2 years ago

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