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diamong [38]
2 years ago
8

ANSWER FAST PLZ 25POINTS!!!!!!!!!!!

Mathematics
2 answers:
Gre4nikov [31]2 years ago
5 0

Answer:

Step-by-step explanation:

43.96 in. divided by 3.14 = 14/2 = 7

The radius is 7in

nadezda [96]2 years ago
3 0

Answer:

7 inches, B

Step-by-step explanation:

The circumference of a circle is equal to 2*pi*r, and pi=3.14.

Set 43.96 equal to 2*3.14*r, dividing by 2*3.14, r=7 inches, or B.

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Can anyone tell me what the answer please please
marishachu [46]

Answer:

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Step-by-step explanation:

4 0
2 years ago
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Which of the following is an extraneous solution of startroot 4 x 41 endroot = x 5? x = –8 x = –2 x = 2 x = 8
Gnom [1K]

The extraneous solution of startroot 4 x 41 endroot = x 5 will be A. -8.

<h3>What is an extraneous solution?</h3>

It should be noted that an extraneous solution simply means a root of a transformed equation which isn't part of the original equation.

✓4x + 41 = x + 5

Square both sides

4x + 41 = x² + 10x + 25

x² + 6x - 16

x(x + 8) - 2(x + 8) = 0

x + 8 = 0

x= 0 + 8 = 8

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7 0
2 years ago
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A truck weighing 150kN and travelling at 2m/sec impacts with a buffer
FrozenT [24]

The maximum compression of the spring is 0.276 m

Step-by-step explanation:

First of all, we calculate the spring  constant of the spring, by using Hooke's law:

F=kx

where

F = 10 kN = 10,000 N is the force applied

x = 1.25 cm = 0.0125 m is the corresponding compression of the spring

k is the spring constant

Solving for k,

k=\frac{F}{x}=\frac{10,000}{0.0125}=8\cdot 10^5 N/m

When the truck impacts with the spring, all the kinetic energy of the truck is converted into elastic potential energy of the spring, so we can write

\frac{1}{2}mv^2=\frac{1}{2}kx^2 (1)

where

m is the mass of the truck

v = 2 m/s is the initial speed of the truck

k=8\cdot 10^5 N/m is the spring constant

x is the compression of the spring

The mass of the truck can be found from its weight:

m=\frac{W}{g}=\frac{150,000 N}{9.81 N/kg}=15,290 kg

So now we can re-arrange eq.(1) to find the compression, x:

x=\sqrt{\frac{mv^2}{k}}=\sqrt{\frac{(15,290)(2)^2}{8\cdot 10^5}}=0.276 m

Learn more about kinetic energy:

brainly.com/question/6536722

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6 0
3 years ago
Question 4
alina1380 [7]
For question 4 the answer is yes and for question 5 the answer is false
6 0
3 years ago
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