Find the value of x. (2 + 3x)

Mathematics

1 answer:

Lerok [7]3 years ago

3 0

Answer:

3x...

Step-by-step explanation:

There is nothing else to do an equation with..

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In the equation '3x-3=9, transposing -3RHS,we get 3x=9

Gemiola [76]

$\sf\purple{The\:value\:of\:x\:is\:4.}$ ✅

Step-by-step explanation:-

$3x - 3 = 9 \\ ➡ \: 3x = 9 + 3 \\ ➡ \: x = \frac{12}{3} \\ ➡ \: x = 4$

To verify:-

$3 \times 4 - 3 = 9 \\ ➵ \: 12 - 3 = 9 \\ ➵ \: 9 = 9 \\ ➵ \: L.H.S.=R. H. S$

Hence verified.

$\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘$

5 0

3 years ago

Need help + explanation!! ^_^

Paha777 [63]

780, or C, is correct. Since 9.75 is 1/80th of the actual measurement, we can set up an equation like this:

9.75 = 1/80x

Then multiply each side by 80:

780 = x

The actual building's height is 780 ft.

We can check this answer by plugging in 780 for x in the original equation:

9.75 = 1/80(780)

9.75 = 9.75

Check! ✓

3 0

3 years ago

A high-interest savings account pays 5.5% interest compounded annually. If $300 is deposited initially and again at the first of

inessss [21]

That is an annuity and use the attached formula.

Total = 300 * [(1.055)^11 -1] / .055 -300
Total = 300 * 1.8020924036 -1 /.055 -300
Total = 300 * .8020924036 / .055 - 300
Total = 300 * 14.5834982473 -300
Total = 4375.0494741818 -300
Total = 4075.05