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3 years ago

Please help...Thank you❤️❤️

Mathematics

2 answers:

Nostrana [21]3 years ago

6 0

Answer:

The area of the triangle is 13.5 square units

Step-by-step explanation:

The easiest way to find the area of of a triangle is to find the area of rectangle surrounding it, and divide by two.

In this case, we can use the bottom line and the distance from that to the top point as the side lengths of our "rectangle"

The bottom line has a length of 9, and the distance from that line to the top point is 3. We can say then that the area of the triangle is half of three times nine:

3 × 9 ÷ 2 = 3 × 4.5 = 13.5

So the total area of the triangle is 13.5 square units

vovangra [49]3 years ago

3 0

Answer:

13.5 square units

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

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1) Are the following lines parallel, perpendicular, or neither?

Maru [420]

In 1)

Line 1 has following coordinates.
(0,0) ; (1,-2) ; (2,-4)

Line 2 has following coordinates.
(0,0) ; (1,0.5) ; (2,1)

Line 3 has following coordinates.
(0,1) ; (1,1.5) ; (2,2)

If you'll draw the lines, you'll observe that Line 1 is perpendicular to Line 2 and Line 3 and Line 2 and Line 3 are parallel to each other.

So,
Option D will be correct.

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4 years ago

Identify the perimeter of a rectangle in which h=6x ft and A=42x ft2.

photoshop1234 [79]

26 ft because 42 divided by 6 is 7 which means the length is 7 and the height is 6. To find the perimeter you have to add each side of the rectangle. 7+7+6+6=26

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3 years ago

SOMEONE ANSWER PLEASE!!!!!

Phoenix [80]

Pilar started with 80 and adds 10 each week.

y= 10x + 80 (ten seashells • weeks + 80 she started with)

Marisol started with 0 and adds 20 each week.

y = 20x (no need to add + 0 because she started with nothing)

Inequality:

y = 10x + 80 < y = 20x

Weeks:

I would reccomend just plugging in numbers (for example if I put in 5 I would determine if it was too high or low then go to the next number.)

I plugged it into an online graph so I can’t show my work but the answer is 8 weeks.

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3 years ago

Read 2 more answers

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Lina20 [59]

9 because 13/.65 = 20 x .45 = 9

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3 years ago

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stiv31 [10]

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4 years ago