Answer:
The value for f(-4) in the piecewise function is -1
Step-by-step explanation:
As the function is defined by pieces we must choose the correct interval when replacing. In this case, the value of the function needs to be calculated in x=4.
This value of x is within the interval:
-5<=x<=-2
Therefore we replaced in the corresponding expression:
f(x)=-x-5
f(-4)=-(-4)-5=-1
Take into account this case is not particularly a function since, for example, in the value of x=-2 the expression can take two values corresponding to two different pieces. The obtained result is only valid in the range for -5<=x<=-2.
We first need to pick the correct piece to use. In this case, we will use f(x) = -x-5 because -5<=-4.
Then, we use direct substitution:
f(-4) = -(-4) - 5
f(-4) = -1
Give your answer with the appropriate precision.
a. 6.7 kg
b. 6.65 kg
c. 6.63 kg
d. 6.6 kg
24.93 - 18.3 = 24.93 - 18.30 = 6.6
answer D
Answer:
3/3=1
Step-by-step explanation:
rise over run
To find the equation for the linear function representing the sales, we need to find the slope (m) and the y-intercept (b).
The slope, m, can be calculated using the formula: m where (x1, y1) and (x2, y2) represent points on the line. Using the given data, andwe have: m = Substituting one of the points, say (1983, $990,000), into the equation y = mx + b, we can solve for b:
Therefore, the equation representing the sales is: y . To estimate the sales in 1991, we substitute x = 8 (since 1991 corresponds to x = 8) into the equation: y Therefore, the estimated sales for 1991 would be approximately $5,534,000.
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Question 5.5. Choose the correct answer.
Kevin wants to make a mixture that is 50% lemon juice and 50% lime juice. How much 100% lemon juice should he add to a juice that is 40% lemon juice and 60% lime juice to make 6 gal of the 50% lemon/50% lime juice mixture?
(Points : 1)
0.5 gal
1 gal
2 gal
2.5 gal
3- 105 ft
4- 21 dimes
5- 1.5 gallons
I just took the test.
Hope this helps someone in the future.