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4 years ago

20 PTS!!! NEED HELP NOW PLEASE!!! If 6(2x-3)=72+8x

Mathematics

1 answer:

Helga [31]4 years ago

3 0

6(2x-3) = 72+8x
12x-18=72+8x
12=72+8x
4x=90
4/4 90/4
x=22.5
x=22.5

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Simplify the expression: 6 x6 y5

timurjin [86]

$\dfrac{6x^6y^5}{3x^3y^3}=\dfrac{6}{3}x^{6-3}y^{5-3}=2x^3y^2\to\boxed{D)}\\\\Used:\\\\\dfrac{a^n}{a^m}=a^{n-m}$

3 0

3 years ago

Eight expressions are given below. Determine whether each expression is equivalent to 5^10 or not equivalent to 5^10.

KengaRu [80]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the 8 expressions are not given.

The general explanation is as follows

As complex as an expression may seem, you have to simplify each expression until it cannot be further simplified.

Then you categorize each result, depending on if it equals $5^{10}$ or not

Take for instance:

$5^5 * 5^5$

Using law of indices:

$5^5 * 5^5 = 5^{5+5$

$5^5 * 5^5 = 5^{10$ ---- equivalent

$\frac{5^5 + 5^5}{2 * 5^{-5}}$

Factorize the numerator

$\frac{5^5 + 5^5}{2 * 5^{-5}} = \frac{5^5(1 + 1)}{2 * 5^{-5}}$

$\frac{5^5 + 5^5}{2 * 5^{-5}} = \frac{5^5 * 2}{2 * 5^{-5}}$

Cancel out 2

$\frac{5^5 + 5^5}{2 * 5^{-5}} = \frac{5^5}{5^{-5}}$

Apply law of indices

$\frac{5^5 + 5^5}{2 * 5^{-5}} = 5^{5--5}$

$\frac{5^5 + 5^5}{2 * 5^{-5}} = 5^{5+5}$

$\frac{5^5 + 5^5}{2 * 5^{-5}} = 5^{10$ ---equivalent

$125 * 78125$

Express as exponent

$125 * 78125 = 5^3 * 5^7$

Apply law of indices

$125 * 78125 = 5^{3+7$

$125 * 78125 = 5^{10$ ---- equivalent

$5^3 + 5^7$

Solve exponents

$5^3 + 5^7 = 125 + 78125$

$5^3 + 5^7 = 78250$ ---- not equivalent

4 0

3 years ago

Please help its easy im just not smart enough to do it lma0

34kurt

Answer:

20 feet

Step-by-step explanation:

66/3.3

it's twenty i dont know what else to say

6 0

3 years ago

Read 2 more answers

Help me please someone

algol13

So basically what you have to do is 6(3)+9

7 0

4 years ago

Martha is on a trip of 1942 miles . She has already traveled 490 miles . She has 3 days left i her trip . How many miles does sh

Leviafan [203]

Answer:

484 miles a day

Step-by-step explanation:

1,942 - 490 = 1,452

1,452 ÷ 3 = 484 miles

3 0

4 years ago