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myrzilka [38]
3 years ago
12

The formula for the area of a triangle is , where b is the length of the base and h is the height.

Mathematics
2 answers:
lilavasa [31]3 years ago
8 0

Answer:

5 units

Step-by-step explanation:

area of triangle = (base × height) ÷ 2 or a = (bh)/2

30 = (12 × h)/2

Isolate the variable

30 × 1/12 = (12 × h)/2 × 1/12

Multiplying 1/12 on both sides cancels out the 12 on the right side and transfers it to the left side

2.5 = h/2

2.5 × 2 = h/2 × 2

Multiplying 2 on both sides cancels out the 1/2 on the right side and transfers it to the left side

5 = h

Alex3 years ago
6 0

Answer:

h = 24

Step-by-step explanation:

A =  1/2 b x h

30 = 12/2 x h

30 =  6 x h

-6     -6

24 = h

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You go to an arcade and purchase a card with game credits. After playing 5 games you have 33 credits left. You play 4 more games
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Answer:

y=-3x+48

Step-by-step explanation:

We will use slope-intercept form of equation to write our equation. The equation of a line in slope-intercept form is: y=mx+b, where m= Slope of the line, b= y-intercept.

To write the equation that represents the number of credits y on the cards after x games, we will find slope of our line.

We have been given that after playing 5 games we have 33 credits left. We play 4 more games and we have 21 credits left. So our points will be (5,33) and (9,21).

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Upon substituting m=-3 and b=48 in slope-intercept form of an equation we will get,

y=-3x+48

Therefore, our desired equation will be y=-3x+48.

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