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Umnica [9.8K]
2 years ago
10

Um chile anyways so...

Mathematics
1 answer:
ratelena [41]2 years ago
4 0

Answer:

maybe 58 or 59  

Step-by-step explanation: bad at the so <u>sorry.</u>

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8u^8+(-21u^8)<br> Helpppp quick
ELEN [110]

\huge\textsf{Hey there!}

\mathsf{8u^8 + (-21u^8)}\\\mathsf{= 8u^2 - 21u^8}\\\large\textsf{COMBINE the LIKE TERMS}\\\mathsf{=(8u^8 - 21u^8)}\\\mathsf{= 8 - 21\rightarrow\boxed{\bf -13}}\\\mathsf{= 8u^2 - 21u^8 \rightarrow \bf -13u^8}\\\\\\\\\boxed{\boxed{\large\textsf{Answer: \bf -13u}\bf ^2}}\huge\checkmark\\\\\\\\\large\textsf{Good luck on your assignment and enjoy your day!}\\\\\\\frak{Amphitrite1040:)}

5 0
3 years ago
Jimmy deposits $4,500 into each of two savings accounts. Account 1 earns 5% annuy simple interest . Account 2 earns 5% interest
german

Answer:

Step-by-step explanation:

Considering account 1, we would apply the formula for determining simple interest which is expressed as

I = PRT/100

Where

I represents interest paid on the amount of money deposited.

P represents the principal or amount of money deposited.

R represents interest rate on the deposit.

T represents the duration of the deposit in years.

From the information given,

P = $4500

R = 5%

T = 4 years

Therefore,

I = (4500 × 5 × 4)/100

I = $900

Total amount in account 1 is

4500 + 900 = 5400

Considering account 2, we would apply the formula for determining compound interest which is expressed as

A = P(1 + r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount deposited

From the information given,

P = $4500

r = 5% = 5/100 = 0.05

n = 1 because it was compounded once in a year.

t = 4 years

Therefore,

A = 4500(1 + 0.05/1)^1 × 4

A = 4500(1.05)^4

A = $5470

The sum of the balances of Account 1 and Account 2 at the end of 4 years is

5400 + 5470 = $10870

6 0
3 years ago
A supervisor records the repair cost for 23 randomly selected stereos. A sample mean of $91.82 and standard deviation of $16.84
Assoli18 [71]

Answer: 2.508

Step-by-step explanation:

As per give , we have

Sample size : n= 23

Degree of freedom : df= n-1=22

significance level : \alpha: 1-0.98=0.02

Since , the sample size is small (n<30) and population standard deviation is unknown.

So , we use t-test.

For confidence interval , we find two-tailed test value.

Critical t-value : t_{\alpha/2, df}=t_{0.01,22}

=2.508  [using students's t-critical value table]

Hence, the critical value that should be used in constructing the confidence interval = 2.508

6 0
3 years ago
Evaluate the expression when a= -2 and b=3. <br><br> ab=
zimovet [89]
The answer is negative 6 or -6 because-2 x 3 is 6
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3 years ago
The drug lorazepam, used to relieve anxiety and nervousness, has a half life of 14 hours. if a doctor prescribes one 2.5 milligr
Klio2033 [76]

\bf \textit{Amount for Exponential Decay using Half-Life} \\\\ A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &2.5\\ t=\textit{elapsed time}\dotfill &24\\ h=\textit{half-life}\dotfill &14 \end{cases} \\\\\\ A=2.5\left( \frac{1}{2} \right)^{\frac{24}{14}}\implies A=2.5\left( \frac{1}{2} \right)^{\frac{12}{7}}\implies A\approx 0.761883533878

4 0
3 years ago
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