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Airida [17]
3 years ago
7

Which of the following rules should be use to find the area of a triangle?

Mathematics
1 answer:
lbvjy [14]3 years ago
4 0

The area of a triangle is half the product of the base and the height.

Since multiplication is commutative, the following expressions are equivalent:

A=(bh)\cdot \dfrac{1}{2} = \dfrac{b}{2}\cdot h = \dfrac{h}{2}\cdot b

So, option D is correct

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The solution to the problem and how would I work it out?
Zinaida [17]

Answer:

x >=5  or x <=-3

Step-by-step explanation:

Solve an absolute value inequality

3|x-1| >= 12

Divide each side by 3

3/3|x-1| >= 12/3

|x-1| >= 4

Now there are two solutions

x-1 >= 4   or x-1 <= -4

Add 1 to each side

x-1+1 >= 4+1   or  x-1+1 <= -4+1

x >=5  or x <=-3

8 0
1 year ago
Alfred delivers two power of ten newspapers every week. How many newspapers does Alfred deliver in 14 weeks.
posledela

Answer:

14, 336 newspapers

Step-by-step explanation:

If he delivers 2^10 newspapers every week that will be 1,024 newspapers. In 14 weeks he'll deliver:

1,024 × 14 = 14, 336 newspapers

8 0
3 years ago
Help with 3 and show all work
masya89 [10]
X<=50.

< is less than
> is greater than

Without him paying the extra fee is <=50
x is pounds.
Now, you have x<=50.

Hope this helped☺☺
6 0
3 years ago
Read 2 more answers
In the figure above, the measure of &lt;BDE is 20 and CD is perpendicular to DE. What is the measure of &lt;ADC ?​
notsponge [240]

Answer:

∠ ADC = 110°

Step-by-step explanation:

∠ CDE = 90° ( angle between perpendicular lines ) , then

∠ CDB + ∠ BDE = 90°

∠ CDB + 20° = 90° ( subtract 20° from both sides )

∠ CDB = 70°

∠ ADC and ∠ CDB are adjacent angles on a straight line and sum to 180° , so

∠ ADC + ∠ CDB = 180° , that is

∠ ADC + 70° = 180° ( subtract 70° from both sides )

∠ ADC = 110°

6 0
2 years ago
Put in order the numbers from least to greatest |-12|, |11 3/4|, |-20.5|, |2|
ss7ja [257]

Answer:

|2|, |11 ¾|, |-12|, |-20.5|

Step-by-step explanation:

When you have absolute value, you basically remove the negative symbol.

3 0
2 years ago
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