3 years ago

Calculate the area of this triangle. 13 cm 5 cm -12 cm-

Mathematics

1 answer:

leva [86]3 years ago

8 0

Answer:

30 cm^2.

Step-by-step explanation:

This is a right angled triangle because it fits the Pythagoras theorem ( 13^2 = 12^2 + 5^2).

The area = 1/2 * 12 * 5

= 30 cm^2.

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If 8(x) is the inverse of f(x) and f(x) = 4x + 12 what is g(x) ?

kompoz [17]

Answer:

(y-12)/4

Step-by-step explanation:

If g(x) is the inverse of f(x)

and f(x) = 4x + 12

f⁻¹(x) = g(x)

let f(x) be represented as y

f(x) = y

y = 4x + 12

subtract 12 from both sides

y-12= 4x

divide both sides by 4

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2 years ago

Did I do this correctly?

quester [9]

Answer:

yes

Step-by-step explanation:

you did it right

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umka2103 [35]

The new mean is 66.09

<u>Explanation:</u>

Mean weight of 20 students = 65kg

One student with 88kg entered the room.

New mean = ?

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$\frac{x_1+x_2+....+x_2_0 + 88}{21} = ?$

The above equation can further be written as:

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New mean = $\frac{1300 + 88}{21}$

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2 years ago

Select the fraction that is NOT in lowest terms . which of these fractions is not in lowest term?

Kisachek [45]

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Step-by-step explanation:

14/21 is divisible by 7, and can reduce to 2/3

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Answer: the answer is A

Step-by-step explanation:

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