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3 years ago

Someone please help me in math

Mathematics

2 answers:

Mazyrski [523]3 years ago

5 0

U dont have to solve it to know as long as they are not quadratic equations and the gradient arent same then there is only one solution

Helga [31]3 years ago

3 0

I just solved it and I'm pretty sure its only one solution, I took the bottom equation multiplied it by -3 then i canceled out the equations and got 9. So that would make it C.

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The 1992 world speed record for a bicycle (human-powered vehicle) was set by Chris Huber. His time through the measured 200 m st

Reil [10]

Answer:

a) 30.726m/s and b) 5.5549s

Step-by-step explanation:

a.) What was Chris Huber’s speed in meters per second(m/s)?

Given the distance and time, the formula to obtain the speed is

$v=\frac{d}{t}$ .

Applying this to our problem we have that

$v=\frac{200m}{6.509s}= 30.726m/s$ .

So, Chris Huber’s speed in meters per second(m/s) was 30.726m/s.

b) What was Whittingham’s time through the 200 m?

In a) we stated that $v=\frac{d}{t}$ . This formula implies that

$t=\frac{d}{v}$ .

First, observer that $19\frac{km}{h} =19,000\frac{m}{h}=\frac{19,000}{3,600}m/s= 5.2777m/s$ .

Then, Sam Whittingham speed was equal to Chris Huber’s speed plus 5.2777 m/s. So, $v=30.726\frac{m}{s} +5.2777\frac{m}{s}= 36.003 m/s.$

Then, applying 1) we have that

$t=\frac{200m}{36.003m/s}=5.5549s.$

So, Sam Whittingham’s time through the 200 m was 5.5549s.

5 0

3 years ago

Construct a 96% confidence interval if a sampling distribution has a mean of 20, standard deviation of 5, and size of 100?

garik1379 [7]

Answer:

wryestudrytfuygiuhi'ojpokplkojih;uglyfkdtrjsezdfxh jshfxdgjcfkhgvbj.k/nl

Step-by-step explanation:

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3 years ago

I just want to make sure this is accurate!! Thanks

egoroff_w [7]

Answer:

Looks good to me!

Step-by-step explanation:

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3 years ago

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kirza4 [7]

X= 6
Y= 0
Z= -2

CHECK
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22=22

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6 + 0 +-2 = 4
4=4

x+3z=0
6 + 3(-2) =0
6 -6 = 0
0=0

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3 years ago

What is the degree of each monomial? -9 a. -8 b. 0 c. -10 d. -9

laiz [17]

Any monomial without a written exponent has a degree of 1.

$-9^1=-9$

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3 years ago

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