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3 years ago

Solve the equation. 0.3b = 8.1

Mathematics

1 answer:

nordsb [41]3 years ago

7 0

Answer:2.43

Step-by-step explanation:

Divide both sides of the equal sign by 0.3 8.1/0.3 =2.43

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The answer is 7.03 × 10<span>-2</span>

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3 years ago

Find the vertex of this parabola:<br> y = -x2 - 4x - 2

VikaD [51]

<h3>Hello!</h3>

$===============================$

In order to find the vertex of a parabola, we use the following formula:

$\bold{\displaystyle\frac{-b}{2a} }}$

Remember, a parabola looks like so:

$\tt{y=ax^2+bx+c}$

Now we know what a and b stand for.

In this case, b is -4, and a is -1:

$\hookrightarrow\sf{\displaystyle\frac{-(-4)}{2(-1)}$

Simplify:

$\hookrightarrow\sf{\displaystyle\frac{4}{-2} }}$

Divide:

$\hookrightarrow\sf{-2}$

$===================================$

<h3>Notes:</h3>

Hope everything is clear.
Let me know if you have any questions!
Enjoy your day!
Always remember: Knowledge is power!

<h3>Answered by:</h3>

$\mathbb{DiAmOnD}\\{\boxed{An~Emotional~And~Creative~Helper}}}}$

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3 years ago

Can someone please help me solve x + 0.018 = 9

Vesnalui [34]

Subtract .018 from 9 to get the answer

9 - .018 = 8.982

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3 years ago

Read 2 more answers

Find the missing numerator that will make the rational expressions equivalent.

Tomtit [17]

The missing numerator that will make the rational expressions equivalent is (82x + 7) / (12x + 42)

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Let y represent the missing numerator, hence:

82x + 7 = y * 6(2x+7)

82x + 7 = y * (12x + 42)

y = (82x + 7) / (12x + 42)

Find out more on equation at: brainly.com/question/2972832

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Agata [3.3K]

See attached images for proof.

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