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bulgar [2K]
3 years ago
7

What 3x5+6-8+7= i keep getting it wrong

Mathematics
2 answers:
pogonyaev3 years ago
6 0

Answer: 20

Step by step:

3×5: 15

15+6: 21

21 - 8: 13

13+7: 20

bazaltina [42]3 years ago
4 0

Answer:

20

Step-by-step explanation:

3x5+6-8+7

PEMDAS

Multiply and divide first

15 +6-8+7

Then add and subtract from left to right

21 -8+7

13 +7

20

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3 years ago
Re-write the equation without the h component.
levacccp [35]

Answer:

f(x) = 2[\frac{3^x}{9}] + 2

f(x) = 8(4)^x

Step-by-step explanation:

Given

f(x) = 2(3)^{x-2} + 2

f(x) = \frac{1}{2}(4)^{x+2}

Required

Remove the h component

In a function, the h component is highlighted as:

f(x) = a^{x+h}

So, we have:

f(x) = 2(3)^{x-2} + 2

Split the exponents using the following law of indices:

a^m/a^n = a^{m-n}

f(x) = 2*\frac{3^x}{3^2} + 2

f(x) = 2*\frac{3^x}{9} + 2

f(x) = 2[\frac{3^x}{9}] + 2

<em>The h component has been removed</em>

f(x) = \frac{1}{2}(4)^{x+2}

Split the exponent using the following law of indices

a^{m+n} =a^m * a^n

So, we have:

f(x) = \frac{1}{2}(4)^x * 4^2

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f(x) = \frac{1}{2}(4)^x * 16

Divide 16 by 2

f(x) = 8(4)^x

3 0
3 years ago
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