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Ad libitum [116K]
3 years ago
10

Area of a right-angled triangle Work out the area of this right-angled triangle.

Mathematics
1 answer:
yarga [219]3 years ago
8 0

Answer:

30

Explanation:

the formula for calculating the area of a right-angled triangle is ½ × base × height, where the base of the triangle is one of its sides, and the height of the triangle is a line connecting the opposite vertex (corner) of the triangle to the base at a right angle.

in this case, because the triangle is already a right-angled one, we do not have to draw a hypothetical line to serve as the height.

all we have to do is apply the formula using the numbers given in the diagram to represent the base and the height.

½ × base × height = ½ × 12 × 5 = 30

i hope this helps! :D

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Answer:

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Step-by-step explanation:

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20 subtracted from three times a number is 6 more than the number
kompoz [17]
<h3>20 subtracted from three times a number is 6 more than the number. Then the number is 13</h3>

<em><u>Solution:</u></em>

<em><u>Given statement is:</u></em>

20 subtracted from three times a number is 6 more than the number

We can translate the sentence into algebraic expression

Let "a" be the unknown number

Then,

20 subtracted from three times "a" is 6 more than "a"

Which means,

3a - 20 = 6 + a

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4 years ago
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<span>The <u>correct answers</u> are:

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Explanation<span>:

We can first write this in standard form, ax</span></span>²<span><span>+bx+c=0. To do this, we will add 11x to both sides:
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The factors we need are 3 and 8, since they sum to 11. This gives us factored form:
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Using the zero product property, we know that in order to have a product of 0, one or both of the factors must be 0. This means we have:
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