2 years ago

I need help and please explain to me how you got the answer

Mathematics

1 answer:

maksim [4K]2 years ago

7 0

Answer:

Explanation:

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Study the equation.<br> x² + 6x = - 4

Zinaida [17]

Answer:

x = -3+√5, -3-√5 (exact roots)

or x = -0.76, -5.24 to the nearest hundredth.

Step-by-step explanation:

x² + 6x = - 4

Completing the square:

(x + 3)^2 - 9 = -4

(x + 3)^2 = 5

x + 3 = +/-√5

x = - 3 + √5, - 3 - √5

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Sophia wants to enlarge a 5-inch by 7-inch rectangular photo by multiplying the dimensions by 3. Find the area of the enlarged p

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Answer:

315 sq. in

Step-by-step explanation:

15 * 21 = 315

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3 years ago

What is the range of the function on the graph?all real numbersO all real numbers less than or equal to -1all real numbers less

Yuki888 [10]

The range of the function f(x) is the set of all values that function f takes.

The domain of the function f(x) is the set of all possible values for x.

From the given graph you can see that the domain is all real numbers, $x\in (-\infty,\infty).$

The maximal y-value that f takes is 3 at x=-1. For all another x from the domain, y is less than 3.

Thus, the range of the given function is $y\in (-\infty,3].$

Answer: $y\in (-\infty,3].$

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Step-by-step explanation:

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Add or subtract each expression.Simplify your final answer show all work.

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4 years ago