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yan [13]
2 years ago
14

HELP!! VERY TIME TIME SENSITIVE

Mathematics
1 answer:
guapka [62]2 years ago
3 0

Answer:

B is your correct answer

Step-by-step explanation:

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Use the given function to find the indicated value(s) of x. (Enter your answers as a comma-separated list.)
Nady [450]

Answer:

For f(x) = √(2·x + 2) - √(x + 18), at f(x) = -1 the possible x-values includes;

-0.757, -17.5

Step-by-step explanation:

Given that the function is f(x) = √(2·x + 2) - √(x + 18)

The value of 'x' when f(x) = -1, is given as follows;

-1 = √(2·x + 2) - √(x + 18)

-1² = (√(2·x + 2) - √(x + 18))² = 3·x + 20 - 2·√(2·x + 2)×√(x + 18)

1 = 3·x + 20 - 2·√(2·x + 2)×√(x + 18)

2·√(2·x + 2)×√(x + 18) = 3·x + 20 - 1 = 3·x + 19

2·x² + 38·x + 36 = (3·x + 19)/2

2·x² + 38·x + 36 - (3·x + 19)/2 = 0

4·x² + 73·x + 53 = 0

From which we get;

x = (-73 ± √(73² - 4 × 4 × 53))/(2 × 4)

x ≈ -0.757, and x ≈ -17.5

6 0
3 years ago
Which graph represents the function f(x)=−3x−2?
LenaWriter [7]

Answer:

Top left

Step-by-step explanation:

We can plug in the y intercept to find which graph has the correct one.

x = 0 is y intercept

Thus

f(0) = -3^0-2 \\f(0) = -1-2\\f(0)=-3

At this point we known the y intercept is -3 so both graph in the left is considerable.

Notice that the base is the negative, thus the graph would goes down. Therefore the top left would be correct.

4 0
3 years ago
Daniel went to Target and bought a basketball for $ 21.85 and a shirt for $12.68. Daniel received $ 0.47 in change. How much did
jarptica [38.1K]

Answer:

$35

Step-by-step explanation:

To do this you would just add the 2 prices together and you would get $34.53 and you would add 47 cents to that and you would get that Daniel gave $35 to the cashier.

5 0
3 years ago
Find the equation of a line, in slope intercept form of a line that passes through the point (9,2) and is perpendicular to the l
son4ous [18]

Answer:

the first one  is correct ive T a k e n this testing.

Step-by-step explanation:

7 0
2 years ago
Lorraine writes the equation shown.
Levart [38]

Answer:

a relation and a function

= A

Step-by-step explanation:

6 0
3 years ago
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