Area of a triangle is equal to 1/2 b(h) so since you already have the height and base, all you need to do is input it back into the equation:

$\frac{1}{2}$ (10)(13)

Multiply 10 & 13 to equal

$\frac{1}{2}$ (130)

Then take half of 130 to get

A = 65 $cm^{2}$

8 0

3 years ago

Read 2 more answers

7. Calculate Rock A contains

Salsk061 [2.6K]

Answer:

45% of the rock is mica

Step-by-step

10% + 45% = 55%. 100% - 55% = 45%

3 0

3 years ago

Write an input and output pair that is a function and stays a function when you switch the input and output

strojnjashka [21]

9514 1404 393

Answer:

{(1, 2), (3, 4)}

Step-by-step explanation:

If you want both the relation and its inverse to be functions, there can be no repeated x-values, and no repeated y-values.

In the above pair of points, I have avoided duplicates by making all of the values different. That is not necessary, but it satisfies this problem easily.

5 0

3 years ago

X - 4(5 + x)=?<br> 3(-2x - 7) + 5=?<br> 12 - (14 + x)=?

kozerog [31]

1. -3x -20
2. -6x-16
3. -14-x

6 0

3 years ago