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guajiro [1.7K]
2 years ago
14

HELP PLEASE DUE IN 3 MINUTES

Mathematics
1 answer:
icang [17]2 years ago
8 0

Answer:

Fossils: number one

Continental Shapes: number three

Seafloor Spreading: number two

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Find the unknown side length. Write your answer in simplest radical form.
Eva8 [605]

Answer: 1. x= 20 units,   2. x= 5\sqrt{3} units    3. x= 4\sqrt{2} units.

Step-by-step explanation:

In a right triangle,

Hypotenuse^2= Perpendicular^2+Base^2  (Pythagoras theorem)

1. Hypotenuse = x , Base = 16, Perpendicular = 12

\Rightarrow\ x^2 =12^2+16^2\\\\ \Rightarrow\ x^2=144+256\\\\ \Rightarrow\ x^2=400\\\\ \Rightarrow\ x=\sqrt{400}=20

2. Hypotenuse = 14 , Base = 11, Perpendicular = x

\Rightarrow\ 14^2=x^2+11^2\\\\\Rightarrow\ 196=x^2+121\\\\\Rightarrow\ x^2=196-121\\\\\Rightarrow\ x^2 = 75\\\\\Rightarrow\ x=\sqrt{75}=\sqrt{25\times3}=5\sqrt{3}

3.  Hypotenuse = 9 , Base = x, Perpendicular =7

\Rightarrow\ 9^2=x^2+7^2\\\\\Rightarrow\ 81= x^2+49\\\\\Rightarrow\ x^2=81-49\\\\\Rightarrow\ x^2=32\\\\\Rightarrow\ x=\sqrt{32}=\sqrt{16\times2}\\\\\Rightarrow\ x=4\sqrt{2}

5 0
2 years ago
Let x= -1, y= -2 and z = 3 evaluate the following expression x/5y - 2z
RideAnS [48]
Just substitute the values: -1/-10-6 -> -1/-16 -> 1/16.
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Carol wants to make a quilt using a scale of 1.5 inches=2 feet. Her scale drawing is 7.5 inches by 10.5 inches. What is the area
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140 ft

Step-by-step explanation:

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3 years ago
Solve for x. 5(3x + 9) = - 135
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Ten students begin college at the same time. The probability of graduating in four years is 63%. Which expanded expression shows
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Answer: the answer is a!


Step-by-step explanation:


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3 years ago
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