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lilavasa [31]
3 years ago
6

WILL GIVE BRAINLIEST!!!!!!

Mathematics
1 answer:
wlad13 [49]3 years ago
8 0

Answer:

Sorry idk the answer...

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Use the commutative law of addition to write an equivalent expression<br><br> 9(x+5)
Ede4ka [16]
Commutaitve has to do with moving around the order

it is a+b=b+a

so x+5=5+x, therefor

9(x+5)=9(5+x)
5 0
3 years ago
Write two ways to group and add 4+7+2
saul85 [17]

Answer:

Two ways you can group them is:

(4+7)+2

4+(7+2)

They will both give you the same answer of 13.

(4+7)+2                  4+(7+2)

11+2= 13                 4+9= 13

4 0
3 years ago
Watch help videoGiven the matrices A and B shown below, find B +A11B5
mixer [17]

we have that

A+B=B+A -------> is the same

so

B+A= (1-5) (-3+3) (4-5) (-5-2)

(2-4) (5-2) (-4+4) (4-5)

<h2>B+A= -4 0 -1 -7</h2><h2> -2 3 0 -1</h2>

7 0
1 year ago
Situation:A researcher in North America discoversa fossile that contains 65% of its originalamount of C-14..-ktN=NoeNo inital am
zheka24 [161]

SOLUTION

We have been given the equation of the decay as

\begin{gathered} N=N_0e^{-kt} \\ where\text{ } \\ N_0=initial\text{ amount of C-14 at time t} \\ N=amount\text{ of C-14 at time t = 65\% of N}_0=0.65N_0 \\ k=0.0001 \\ t=time\text{ in years = ?} \end{gathered}

So we are looking for the time

Plugging the values into the equation, we have

\begin{gathered} N=N_0e^{-kt} \\ 0.65N_0=N_0e^{-0.0001t} \\ e^{-0.0001t}=\frac{0.65N_0}{N_0} \\ e^{-0.0001t}=0.65 \end{gathered}

Taking Ln of both sides, we have

\begin{gathered} ln(e^{-0.000t})=ln(0.65) \\ -0.0001t=ln(0.65) \\ t=\frac{ln(0.65)}{-0.0001} \\ t=4307.82916 \end{gathered}

Hence the answer is 4308 to the nearest year

8 0
1 year ago
Jane Martin-Smith and her husband deposited $500 in an account on their wedding day and each subsequent anniversary. The money w
PolarNik [594]

Answer:

On their 25th anniversary, their account will have $850

Step-by-step explanation:

7% per year for 25 years is 170%

170% of 500 is 850

I hope this helps!

8 0
3 years ago
Read 2 more answers
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