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3 years ago

Please help me thank you so much i will give brainliest answer if you get it right

Mathematics

1 answer:

Setler79 [48]3 years ago

7 0

Answer:

the first four

Step-by-step explanation:

The last two do not equal 9 or .90

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Giving brainliest if correct!

kolbaska11 [484]

Answer:

I think it is 336 ways the medals can be given out.

Step-by-step explanation:

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3 years ago

How many hours are in 186 minutes express this as a mixed number and as a decimal

Amanda [17]

186 minutes is 3 hours and 6 minutes. As a decimal this is 3.1 hours and as a mixed number it is 186/60.

7 0

3 years ago

A city has 18 radio stations, including 9 oldies stations.

kari74 [83]

50% so 9/18, or 1/2 simplified

3 0

3 years ago

1. Joe used the Pythagorean theorem to make sure the picture frame he made is a precise

Alex

Answer:

6 inches

Step-by-step explanation:

$a^2+b^2=c^2$

$8^2+b^2=10^2$

$64+b^2=100$

$100-64=b^2$

$b^2=6^2$

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8 0

3 years ago

A ball is thrown from an initial height of 3 meters with an initial upward velocity of 30 m/s. The ball's height h (in meters) a

yanalaym [24]

$h=3+30t-5t^2\implies 13=3+30t-5t^2\implies 0=-10+30t-5t^2 \\\\\\ 5t^2-30t+10=0\implies 5(t^2-6t+2)=0\implies t^2-6t+2=0$

now, it doesn't give us nice looking integers, so let's plug that into the quadratic formula.

$~~~~~~~~~~~~\textit{quadratic formula} \\\\ \stackrel{\stackrel{a}{\downarrow }}{1}t^2\stackrel{\stackrel{b}{\downarrow }}{-6}t\stackrel{\stackrel{c}{\downarrow }}{+2}=0 ~\hspace{10em} t= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a} \\\\\\ t= \cfrac{ - (-6) \pm \sqrt { (-6)^2 -4(1)(2)}}{2(1)}\implies t=\cfrac{6\pm\sqrt{36-8}}{2}$

$t=\cfrac{6\pm\sqrt{28}}{2}\implies t=\cfrac{6\pm\sqrt{2^2\cdot 7}}{2}\implies t=\cfrac{6\pm 2\sqrt{7}}{2}\implies t=\cfrac{2(3\pm 1\sqrt{7})}{2} \\\\\\ t=3\pm \sqrt{7}\implies t= \begin{cases} 3+\sqrt{7}\\ 3-\sqrt{7} \end{cases}\implies t\approx \begin{cases} 5.65\\ 0.35 \end{cases}$

8 0

3 years ago