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3 years ago

9

Jayne is driving 440 miles and wants to make the trip in 8 hours. write an equation and solve to determine the average speed jay

ne needs to drive to make the trip in 8 hours. _____

1 answer:

Nuetrik [128]3 years ago

7 0

Distance÷time
440÷8= 55
Therefore he needs to drive at the speed of 55 miles/hour

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Maria buys 4 1/5 pounds of plums. The total cost after using the coupon for 55 cents off her entire purchase is 3.23$. If c repr

Rudik [331]

$3.23 = 4 1/5c - .55

4 1/5c = the pounds of plums, and the cost of each pound. - .55 represents subtracting the coupon.

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3 years ago

At her job, Jesse. Earn 9 dollars and 50 cents per hour, she also earns a 60 dollar bonus every month. Jesse needs to earn at le

vichka [17]

Answer:

Jesse needs to work 43 hours in the month to make $400 and $60

work for answer: 9.50 x 43 = 408.5

example why it can't be lower or higher than 43 hours 9.50 x 42 = 399 or 9.50 x 44 = 418

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3 years ago

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Mashcka [7]

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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

nlexa [21]

-16 + (-8) = -24
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10.8 - (6.4) = 4.4
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F ur fractions

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2 years ago