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3 years ago

What is the domain of the function y=sqrt x+4

Mathematics

1 answer:

max2010maxim [7]3 years ago

8 0

Answer:

domain of y = sqrt (x+4) is [-4, +inf)

Step-by-step explanation:

[-4, +inf), -4 is included because sqrt(-4 + 4) is defined but is undefined at the points from (-inf, -5].

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When 21 is subtracted from the square of a number, the result is 4 times the number. Find the positive solution.

wel

Let x = your number.

x^2 - 21 = 4x. Subtract 4x from both sides.

x^2 - 4x - 21 = 0. Factor.

(x - 7) (x + 3) = 0. Set each term to 0.

x + 3 = 0. Subtract 3 from both sides.

x = -3. This is the negative solution.

Set the other term equal to zero.

x - 7 = 0. Add 7 to each side.

x = 7. This is the positive solution.

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3 years ago

How do you write 9.59 x 102 in a standard form?

Nataly [62]

Answer:

978.18

Step-by-step explanation:

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3 years ago

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Joseph claims that a scatterplot in which the y-values increase as the x-values increase must have a linear association. Amy cla

quester [9]

Answer:

Amy is correct because a nonlinear association could increase along the whole data set, while being steeper in some parts than others. The scatterplot could be linear or nonlinear.

Step-by-step explanation:

I just took the quiz, I hope this helps :).

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3 years ago

Read 2 more answers

Account A: $300 monthly deposits, interest rate is 4.2%. Account B: $250 monthly deposits, interest rate is 5.1%. Which account

Elan Coil [88]

Answer:

Step-by-step explanation:

We have to determine the future value of the annuity to determine which account has a greater value

Future value = Amount x annuity factor

annuity factor = Annuity factor = {[(1+r)^n] - 1} / r

Account A = 300 x[ (1.042)^15 - 1 ] / 0.042 = $6097.14

Account B = 250 x[ (1.051)^15 - 1 ] / 0.051 = $5435,42

Account A will be greater

4 0

3 years ago

Suppose that 10 < n < 11. A possible value for n is

-BARSIC- [3]

★ Inequalities ★

$10 < n < 11 \\$
or n ∈ ( 10 , 11 )
Possible value can be easily obtained by generating an arithmetic mean

$n = \frac{10 + 11}{2} = 10.5$
Else we've infinite numbers between them ,
According to density property of real numbers , we can have any real number satisfying the given inequality under condition 10 < n < 11
Which is true for infinite possible numbers
10.1 , 10.2 , ... INFINITY

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3 years ago