3 years ago

HELLPPPP MEEEEEEEE

Mathematics

1 answer:

kirill115 [55]3 years ago

5 0

Answer:

Step-by-step explanation:

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Which expresses 2.7 billion in scientific notation

liraira [26]

Answer: A 2.7 x 10^9

Explanation: brain go brrrrr

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3 years ago

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The population of a local species of dragonfly can be found using an infinite geometric series where a1=42 and the common ratio

san4es73 [151]

$\bf \textit{sum of an infinite geometric serie}\\\\
\stackrel{for~~|r|\ \textless \ 1}{S=\sum\limits_{i=0}^{\infty}~a_1r^i\implies \cfrac{a_1}{1-r}}\qquad 
\begin{cases}
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=42\\
r=\frac{3}{4}
\end{cases}
\\\\\\
S=\cfrac{42}{1-\frac{3}{4}}\implies S=\cfrac{42}{\frac{1}{4}}\implies S=164$

bearing in mind that, the geometric sequence is "convergent" only when |r|<1, or namely "r" is a fraction between 0 and 1.

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3 years ago

1 /3 + 1 /9 / (7/10 * 5 / 4 )

Ludmilka [50]

Answer:

0.46

Hope it helps..

have a great day : )

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3 years ago

There is a proportional relationship between the volume of a sample of helium in liters and the mass of that sample in grams. if

love history [14]

Answer:

v = 5.6m

Step-by-step explanation:

Proportional relationship equation:

y = kx, where k- constant of proportionality

Use the given point to work out the value of k:

28 = 5k
k = 28/5
k = 5.6

In our case the equation is:

v = 5.6m, where v- volume, m- mass

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2 years ago

Can someone please help me with this!!

Aloiza [94]

Answer:

$407 yd^{2}$

Step-by-step explanation:

first find the area of the rectangle, which would be $16*13 = 208$ yd²

then find the arc length of the sector, which is about 30.6yd

use the arc length to find the area of the sector, which is about 199.09yd²

add together the area of the rectangle and sector:

199.09 + 208 ≈ 407

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3 years ago