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2 years ago

What is x^2=7x number 9

Mathematics

1 answer:

ipn [44]2 years ago

8 0

Let's do this in steps, show your work!

#1. We need to move all terms to one side.

x^2 - 7x = 0

#2. Then factor out the common term x.

x(x - 7) = 0.

#3. Simplify to get..

x = 0, 7.

If you need help with any other question let me know.

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Qual o resultado de (-3+4-2)elevado a 5

m_a_m_a [10]

-3 is the answer.... i think

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3 years ago

Solve 4^x+2 = 12 for x using the change of base formula log base b of y equals log y over log b.

valentinak56 [21]

The value of x is 1.66

Step-by-step explanation:

Let use revise the rules of exponential and logarithmic equations

1. If y = $b^{x}$ , then $log_{b}(y)=x$

2. $log_{b}(y) = \frac{log(y)}{log(b)}$

Use the rules above to solve the problem

∵ $4^{x}+2=12$

- Subtract 2 from both sides

∴ $4^{x}=10$

change the exponential equation to logarithmic equation

∴ $log_{4}(10)=x$

∵ $log_{4}(10) = \frac{log(10)}{log(4)}$

∴ x = $\frac{log(10)}{log(4)}$

∴ x = 1.66

The value of x is 1.66

Learn more:

You can learn more about logarithmic function in brainly.com/question/10633485

#LearnwithBrainly

6 0

3 years ago

It is Monday, 0250 hours in Vancouver, Canada, and Monday, 2050 hours in Melbourne. By how many hours is Vancouver time behind M

NikAS [45]

The answer is 1800

How to get it

2050 - 250=
do the subtraction
and Vancouver is 1800 hours behind Melbourne

7 0

3 years ago

3 gallons of paint cover 900 square feet. How many gallons will cover 300 square feet?

SVEN [57.7K]

Answer:

1 gallon

Step-by-step explanation:

Since the relationship is direct, meaning as the number of square feet decreases, the number of gallons also decreases.

3:900 = x:300

solution:

3(300) = 900x

900=900x

x=1

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2 years ago

Read 2 more answers

5,000 is invested at an interest rate of 8% compounded annually. how much is the investment return after 20 years?

iren [92.7K]

Step-by-step explanation:

5k×8×20

_______ =800

100

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2 years ago

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