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erma4kov [3.2K]
3 years ago
6

I'm not sure how to start the process....

Mathematics
1 answer:
lesantik [10]3 years ago
3 0
Step 1; both side divide by 4, you'll get Ix-10I=8
step 2: x-10=8 or x-10=-8
x=18 or x=2
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Please help me solve the expression for “n”
Bingel [31]

Answer:

  n = 2

Step-by-step explanation:

In order for the ratio to have a value of 1, the sum of exponents in the numerator must equal the sum of exponents in the denominator:

  n + 7 = 9

  n = 9 -7 . . . . . . subtract 7 from both sides of the equation

  n = 2

___

Alternatively, you can simplify the given expression:

  \dfrac{9^n(9^7)}{9^9}=1=\dfrac{9^n}{9^2}

Hopefully, it is clear to you that the value of n must be 2 in order to make the numerator equal to the denominator.

5 0
3 years ago
Owen receives $10 and puts it into his savings account. He adds $0.50 to the account each day for a number of days, d, after tha
makkiz [27]

Answer:

it is the sum of the initial amount and the additional amount after d days

Step-by-step explanation:

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7 0
3 years ago
HELP!!!!!!!! Select an expression that id equivalent to 4squareroot of 2x^2 • 4squareroot of 2x^3
earnstyle [38]

Answer:

B

Step-by-step explanation:

\sqrt[4]{2x^2} *\sqrt[4]{2x^3} =(2x^2)^{1/4}*(2x^3)^{1/4}\\= 2^{1/4}*(x^2)^{1/4} *2^{1/4} * (x^3)^{1/4}\\

combine like terms

= 2^{2/4} *x^{2/4}*x^{3/4}\\= 2^{2/4} * x^{5/4}

these steps use exponent laws

a few key ones i used:

(x^y^z) = x^(y*z)

x^y * x^z = x^(y+z)

let me know if you have any questions!

8 0
2 years ago
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alexgriva [62]

Answer:

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Step-by-step explanation:

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Yesterday - 139

difference (today - yesterday) = 82

How to find percent:

((part)/(whole)) = ((x)/(100))

In this case, the part is the difference, and the whole is the value of an item yesterday, so the equation is:

82/139 = x/100

cross multiply

8200 = 139x

Inverse operations

8200 = 139x

/139       /139

8200/139 = x

approx. 59 = x

4 0
3 years ago
What is 37494964937478 Divided by? No your not allowed to answer one, whoever gets it right gets brainliest!
a_sh-v [17]

Answer:

3

Step-by-step explanation:

I think all the digits added together is 84 if I counted right which can be divided by 12 so the number can be divided by 3

6 0
3 years ago
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