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lisabon 2012 [21]
3 years ago
6

Which of these numbers is composite?7,9,23,47,67

Mathematics
1 answer:
Tresset [83]3 years ago
8 0

Answer:9 is the only one


Step-by-step explanation:


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3/8 of he class have animals that are not rodents
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I have a problem can you help me on it its math its select the difference of (2x^2 -13x+7)-(1-12x)= this is were I have my probl
Finger [1]
(2x^2 -13x+7)-(1-12x)=\\
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Evaluate 8(6+5)/2²+6(2)​
klemol [59]

Answer:

34

Step-by-step explanation:

1. Add 6 and 5 and that multiplies with 8 which would be 88

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2 years ago
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Ming throws a stone off a bridge into a river below.
AURORKA [14]

Answer:

1 seconds after being thrown, the stone reaches its max height

Step-by-step explanation:

The parabolic (quadratic) equation is:

h(x)=-5(x-1)^2+45

Lets expand this in the form ax^2+bx+c, so we have:

h(x)=-5(x-1)^2+45\\h(x)=-5(x^2-2x+1)+45\\h(x)=-5x^2+10x-5+45\\h(x)=-5x^2+10x+40

We can say the values of a,b, and c, now to be:

a = -5

b = 10

c = 40

The number of seconds at which the max would occur is given by the point, x, at:

x=-\frac{b}{2a}

We know a and b, let's find the seconds, x,

x=-\frac{b}{2a}=-\frac{10}{2(-5)}=-\frac{10}{-10}=--1=1

Hence,

1 seconds after being thrown, the stone reach its max height

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3 years ago
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Cookies I make make sugar is 1 cup for every 2 cups of flour so it is 1 to 2


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3 years ago
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