3 years ago

Pls help me solve this

Mathematics

1 answer:

melamori03 [73]3 years ago

8 0

Answer:

See below.

Step-by-step explanation:

1.) False - It contains 6 sig figs, not 2.

2.) False - It goes up to 2 decimal places, not 3.

3.) True

4.) False - It goes up to 1 sig fig, not 4.

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To the nearest tenth, find the perimeter of ∆ABC with vertices A(-1,4), B(-2,1) and C(2,1).

swat32

First we need to find the length of each side of the triangle , and for that we need to use the distance formula, that is
$d =\sqrt{(x_{2} -x_{1})^2 +(y_{2} -y_{1})^2}$
$AB = \sqrt{(1-4)^2 +(-2+1)^2}= \sqrt{10}$
$\sqrt{BC} = \sqrt{(1-1)^2 + (2+2)^2}=4$
Perimeter is the sum of all sides.
$Perimeter = AB + BC + AC = \sqrt{10}+4 +\sqrt{18}$
$Perimeter= 11.4$

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2 years ago

A tree casts a 25 foot shadow. At the same time of day, a 6 foot man standing near the tree casts a 9 foot shadow. What is the a

kirza4 [7]

Ratio of height of the man to the length of the shadow = 6:9 = 2:3
Ratio of height of the tree to the length of its shadow = x:25 = 2:3
x/25 = 2/3
x = (25 x 2)/3 = 50/3 = 16.67

Therefore the approximate height of the tree to the nearest foot is 17 feet.

7 0

3 years ago

Read 2 more answers

Does anyone know the answer to this?

Assoli18 [71]

Answer:

Step-by-step explanation:

Percent: The percent is the number with the % symbol: 20%.

Base: The base is the whole amount, which in this case is unknown.

Amount: The amount based on the percent is 40

Base = unknown

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3 years ago

What is the answer to this question because I am stuck 3x^2y^4 x 2x^6y

mash [69]

Answer:

6x^8y^5

Step-by-step explanation:

3x^2y^4 x 2x^6y

3x x x x y x y x y x y x 2x x x x x x x x x x x x y

6x^8y^5

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3 years ago

Brian’s company logo consists of a giant triangle. He wants to paint this triangle on a wall in his office. The triangle that he

Nitella [24]

Your answer is 30ft
1/2 of base times height is 30
6 times 10 = 60
60/2 =30

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3 years ago