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3 years ago

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A spinner has eight congruent sections numbered 1 through 8. If the spinner is spun 1000 times, about how many times would it be

expected to land on a number less than 4? A.125 B.250 C.375 D.500
HURRY PLEASE ; )

2 answers:

Korvikt [17]3 years ago

5 0

Answer:

C. 375

I hope this helps.

fgiga [73]3 years ago

3 0

The answer is C. 375

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Henry is designing a model for a dome shaped glasshouse. He creates the model and records the horizontal distance from the edge

dolphi86 [110]

Answer:

Correct choice is B

Step-by-step explanation:

All given options represent quadratic function. Let the equation of this quadratic function be

$f(x)=ax^2+bx+c.$

Then

1. $f(0)=2=a\cdot 0^2+b\cdot 0+c\Rightarrow c=2;$

2. $f(1)=7.5=a\cdot 1^2+b\cdot 1+c\Rightarrow 7.5=a+b+2;$

3. $f(2)=12=a\cdot 2^2+b\cdot 2+c\Rightarrow 12=4a+2b+2.$

Solve the system of two equations:

$\left\{\begin{array}{l}a+b+2=7.5\\4a+2b+2=12\end{array}\right.\Rightarrow\left\{\begin{array}{l}a=5.5-b\\4(5.5-b)+2b=10\end{array}\right.$

Then

$22-4b+2b=10,\\ \\-2b=-12,\\ \\b=6,\\ \\a=5.5-6=-0.5.$

Thus, the equation of the function is

$f(x)=-\dfrac{1}{2}x^2+6x+2.$

Note that

$f(3)=-\dfrac{1}{2}\cdot 3^2+6\cdot 3+2=-4.5+20=15.5;$

$f(4)=-\dfrac{1}{2}\cdot 4^2+6\cdot 4+2=18.$

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If x = 2.7, 5x = ____. (Only input decimals such as 12.7 as the answer.)

Nookie1986 [14]

5(2.7)= 13.5

You just plug in 2.7 for x

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3 years ago

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This is 10 points plz help ( NO LINKS )

VashaNatasha [74]

J is the correct answer!

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Franklin treated his sister to lunch while visiting her in Ashland. Their lunch cost $75, and the sales tax in Ashland is 8%. If

Alborosie

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Franklin didn´t pay sales tax because tips can cover the tax. The answer is $79

Step-by-step explanation:

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Marcus spends $58 at the bookstore. He spends the same amount of money on each of the 4 books he purchase. He also paid $4 in sa

Marat540 [252]

Answer:

$15.5

Step-by-step explanation:

58+4=62 62divided by4=15.5 :) Have a nice day

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