3 years ago

11 A freezer was set at -4.5°F then lost power for 2 hours. In that

Mathematics

1 answer:

sergey [27]3 years ago

6 0

Answer:

-0.8⁰F

You subtract 3.7 from 4.5 and you get 0.8 and you add a negative sign because -4.5 is bigger than positive 3.7

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A 78 gram sample of Uranium loses half of its mass each year. What is the exponential equation? Please explain why A is the corr

Fiesta28 [93]

Answer:

Step-by-step explanation:

The first answer is correct because we have a decay factor.

The sample is losing mass, so the number that is being multiplied by a power of x must be less than 1.

If the second answer were used, then the sample would be gaining mass.

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2 years ago

A Geometric series has a first term of 4 and a common ratio of 6. what formula is equivalent to the partial sum of the first n t

IRISSAK [1]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
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a_1=4\\
r=6
\end{cases}
\\\\\\
S_n=4\left( \cfrac{1-6^n}{1-6} \right)\implies S_n=4\left( \cfrac{1-6^n}{-5} \right)$

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2 years ago

What is the Answer to this problem 75x+2=

pashok25 [27]

75x+2=
75x-2=-2. move the 2 to the other side
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2 years ago

Number 34 please guys!!!!!!

GenaCL600 [577]

The answer is obviously three.

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3 years ago

Iris made bracelets with string and beads. She used x centimeters of string to make 7 bracelets. She used 17.8 centimeters of st

iren [92.7K]

Answer:

124.6 centimeters

Step-by-step explanation:

7(17.8) = x

Simplify:

x = 124.6

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2 years ago