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3 years ago

7

Pls Help! 100 points and branliest! How do I solve for X

="TexFormula1" title="log_{6}(2x-7)=4" alt="log_{6}(2x-7)=4" align="absmiddle" class="latex-formula">

1 answer:

Andru [333]3 years ago

7 0

Answer: x = 651.5

Step-by-step explanation:

First, we can re-write the equation as $6^4$ = 2x - 7.

Now, we simplify 6^4 = 1296.

1296 = 2x - 7

1303 = 2x

x = 651.5

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ra1l [238]

The answer to both should be 70. For 1, I’m fairly sure it’s 180 so subtract 110 to get 70. For 2, 8 equals 70 so 6 would also equal 70.

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3 years ago

In each of the following ,make y the subject and hence find the value of y when a=2, b=3 ,and c=4.

zvonat [6]

Part i

$\dfrac{2a-7}{6y} = \dfrac{3b-5}{2c}$

$y = \dfrac{ 2c(2a-7)}{6(3b-5)} = \dfrac{c(2a-7)}{9b-15}$

Substituting,

$y = \dfrac{4(2(2)-7)}{9(3)-15} = \dfrac{ -12}{12} = -1$

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Part ii

I'm not sure that one's typed in correctly but I'll solve it as written.

$3-34y + 2a = \dfrac{3b-5}{2c + 1}$

$34y = 3+2a-\dfrac{3b-5}{2c + 1}$

$y = \frac 1 {34}\left(3+2a-\dfrac{3b-5}{2c + 1} \right)$

We're not asked to simplify it so I wont. Substituting,

$y = \frac 1 {34}\left(3+2(2)-\dfrac{3(3)-5}{2(4) + 1} \right) = \frac 1 {34}(7-4/9) = \dfrac{59}{306}$

Answer: 59/306

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4 years ago

Jonah and his brother want to earn at least $400 this month, so they rented a lawn mower to mow lawns. They plan to charge $25 p

Travka [436]

Answer:

20 lawns

Step-by-step explanation:

25x4=100(duh) (16)

100x4=400(duh)

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3 years ago

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Vinvika [58]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Twice a number x, minus 17

LekaFEV [45]

Answer:

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Step-by-step explanation:

Twice a number x means x times 2, which can be written as 2x

Minus 17 from 2x

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3 years ago