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3 years ago

HHHEEELLPPP PPPLLLEEASEEE!!!!!! PLZZ HELP ME I GIVE BRAINLIEST!!!!!!!PZL HELP ME

Mathematics

1 answer:

ozzi3 years ago

5 0

Okay, we can use the functions in parts 3 and 4 since we want to calculate how many points will be deducted for 3 falls and how many points are earned for 4 seconds on the rail trick.

Part 3 function:
$\sf y=1.6x$

He fell 3 times, so plug this in for 'x':

$\sf y=1.6(3)$

Multiply:

$\sf y=4.8$

So he will receive a 4.8 point deduction for falling 3 times.

Part 4 function:
$\sf y=7x+10$

Where 'x' is the seconds he does the trick. He did it for 4 seconds, so let's plug that in for 'x':

$\sf y=7(4)+10$

Multiply:

$\sf y=28+10$

Add:

$\sf y=38$

So he will receive 38 points for the 4-second rail trick.

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slega [8]

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4 years ago

What is the equation of the graph below? A graph shows a parabola that opens up with a vertex at negative three comma negative o

Tomtit [17]

Answer:

$y=(x+3)^2-1\\y=x^2+6x+8$

Step-by-step explanation:

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Therefore, the equation of the given graph is

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3 years ago

In a continuous series, mean(x) = 80, assumed mean(A) = 60 and<br>EF=40 then find the value of EFd.

Aneli [31]

Using the given information, the value of Σfd is 800

<h3>Calculating mean using Assumed mean </h3>

From the question, we are to determine the value of Σfd

The formula for mean, using the assumed mean method is given by

$\bar x = A + \frac{\sum fd}{\sum f}$

Where $\bar x$ is the mean

A is the assumed mean

From the given information,

$\bar x = 80$

$A = 60$

$\sum f = 40$

Putting the parameters into the equation, we get

$80 = 60 + \frac{\sum fd}{40}$

$80-60 = \frac{\sum fd}{40}$

$20 = \frac{\sum fd}{40}$

$\sum fd = 20 \times 40$

$\sum fd = 800$

Hence, the value of Σfd is 800

Learn more on Mean here: brainly.com/question/20118982

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2 years ago

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Nutka1998 [239]

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3 years ago

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3 years ago