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Papessa [141]
3 years ago
7

Which of the following is the equation a^(2b+1)=3c-d

Mathematics
2 answers:
jarptica [38.1K]3 years ago
8 0
The first one is the answer :)
AlexFokin [52]3 years ago
3 0

Answer:

Option 1 - \log_a (3c-d)=2b+1

Step-by-step explanation:

Given : Equation a^{2b+1}=3c-d

To find : Which of the following is the equation ?

Solution :

Equation a^{2b+1}=3c-d

Taking log both side,

\log (a^{2b+1})=\log (3c-d)

Apply logarithmic property, \log a^x=x\log a

(2b+1)\log (a)=\log (3c-d)

(2b+1)=\frac{\log (3c-d)}{\log a}

Apply change the base rule, \frac{\log _a x}{\log _a y}=\log_y x

(2b+1)=\log_a (3c-d)

So, the required equation is \log_a (3c-d)=2b+1

Therefore, option 1 is correct.

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If line 1 has a slope of -4 and line 2 has a slope of 1/4, they are parallel<br> True<br> O False
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An investor invested a total of $2,800 in two mutual funds. One fund earned 5% profit while the other earned 3% profit. If the i
Natasha_Volkova [10]

Answer:

The amount invested in the mutual fund that earned 5% was $1,000

The amount invested in the mutual fund that earned 3% was $1,800

Step-by-step explanation:

Let

x ----> the amount invested in the mutual fund that earned 5%

y ----> the amount invested in the mutual fund that earned 3%

we know that

x+y=2,800 ----> y=2,800-x ----> equation A

5\%=5/100=0.05

3\%=3/100=0.03

0.05x+0.03y=104 ----> equation B

Solve the system by substitution

substitute equation A in equation B

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Solve for x

0.05x+84-0.03x=104

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<em>Find the value of y</em>

y=2,800-x

y=2,800-1,000=\$1,800

therefore

The amount invested in the mutual fund that earned 5% was $1,000 and the amount invested in the mutual fund that earned 3% was $1,800

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