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2 years ago

Please help, easy geometry

Mathematics

1 answer:

Natasha_Volkova [10]2 years ago

5 0

Answer:

28 square units

Step-by-step explanation:

The formula usually used for the area of a triangle is ...

A = (1/2)bh

where b is the base length and h is the height.

Since the bottom two points lie on the horizontal line y=1, it is convenient to choose the line segment between them as the base. That segment has a length that extends from x=-3 to x=4, so it is 7 units long.

The height is the perpendicular distance from the third point (1, 9) to the base (line y=1). The distance in the x direction is the distance from y=1 to y=9, a distance of 8 units.

Putting these numbers for base length and height into the area formula, we get

A = (1/2)(7 units)(8 units) = 28 square units

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If 2 > -a, then _____

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Answer:

-2 < a

Step-by-step explanation:

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2 years ago

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Stevie is moving up to the attic and wants to paint a wall white. The wall is a triangle with a base of 20 feet and a height of

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2 years ago

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Write the equation of the line with a slope of 2 that passes through the points -2,-7 and 5,7

lubasha [3.4K]

Answer:

Therefore the equation of the line through ( -2 , -7 ) and ( 5 , 7 ) is

2x - y = 3

Step-by-step explanation:

Given:

Slope = 2 = m ( say )

Let,

point A( x₁ , y₁) ≡ ( -2 , -7 )

point B( x₂ , y₂) ≡ ( 5 , 7 )

To Find:

Equation of Line AB =?

Solution:

Equation of a line passing through Two points A( x₁ , y₁) and B( x₂ , y₂)is given by the formula,

$(y - y_{1} )=(\frac{y_{2}-y_{1} }{x_{2}-x_{1} })\times(x-x_{1}) \\$

Equation of a line passing through a points A( x₁ , y₁) and i having slope m is given by the formula,

$(y - y_{1} )=m\times(x-x_{1}) \\$

Substituting the given values in a above equation we get

$(y-(-7))=2\times (x-(-2))\\ \\(y+7)=2(x+2)\\\\(y+7)=2x+4\\2x-y=3\\2x-y=3...............\textrm{which is the required equation of the line AB}$

Therefore the equation of the line through ( -2 , -7 ) and ( 5 , 7 ) is

2x - y = 3

8 0

2 years ago

It costs 3 tickets to play a game at the fair. If you spent 21tickets on the game, which equation could you use to solve for the

solniwko [45]

<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ The correct option would be D. 3g = 21

As it is 3 tickets per game, the total number of tickets would be 3 multiplied by the number of games

This equation could then be rearranged to find the number of games.

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

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2 years ago

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Please help, easy geometry​

Please help, easy geometry