3 years ago

The Birdwatching Club has 8 members, 2 girls and 6 boys. What is the ratio of

Mathematics

1 answer:

AleksAgata [21]3 years ago

7 0

Answer:

c 1:3

Step-by-step explanation:

2/6 divide it by 1/3 and u get 1:3

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Using Euler’s formula, how many edges does a polyhedron with 20 faces and 12 vertices have?

astra-53 [7]

Euler's formula for a polyhedron is given by:

$\begin{gathered} F+V=E+2 \\ \text{where,} \\ F=\text{faces} \\ V=\text{vertices} \\ E=\text{edges} \end{gathered}$

Make E, the subject of the formula:

$\begin{gathered} F+V=E+2 \\ E=F+V-2 \end{gathered}$

Put F = 20, V = 12, to obtain E,

$\begin{gathered} E=20+12-2 \\ E=30 \end{gathered}$

Therefore, there are 30 edges

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Help please, I don’t know how to do this. Ill give brainliest!

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This fraction $\frac{17}{3}$ , is not a mixed fraction. $5 \frac{2}{3}$ is a mixed fraction.

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2 years ago

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10- [6-2•2 + (8-3)]•2

Aloiza [94]

Answer:

10-[6-4+(5)]×2

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3 years ago

Find the mean of the integers: 7,-9,9,-7,0

Aleks04 [339]

Step-by-step explanation:

Add all of the numbers together

7 + 9 + 0 + (-9) + (-7)

simplify it down to:

(7+9+0)= 16

-9 + (-7)= - 16

So, -16 + 16 = 0

then divide 0 by 5 to get the answer of 0

To find the mean you have to add all of the numbers together and then divide by the amount of numbers that you have.

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