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vichka [17]
3 years ago
12

Solve by factoring square roots x^2 -49=0​

Mathematics
1 answer:
aliina [53]3 years ago
4 0

Answer:

X=7

Step-by-step explanation:

X = SQRT(49)

X = 7

Best regards

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Must a function this is decreasing over a given interval always be negative over the same interval? Explain
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It is certainly possible for a function decreasing over a certain interval to be negative, but no rule that says it must be. On the other hand, where the function is decreasing, the rate of change of the function must be negative.


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I need help with this question!!
IrinaVladis [17]

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3 years ago
Find the missing value for the exponential function represented by the table below x -2 -1 0 1 2 y 29 20.3 14.21 6.9629
andre [41]

Answer:

y=4.8710 is the missing value

Step-by-step explanation:

The first step in approaching this question is determining the exponential equation that models the set of data. This can easily be done in Ms.Excel application. We first enter the data into any two adjacent columns of an excel workbook. The next step is to highlight the data, click on the insert tab and select the x,y scatter-plot feature. This creates a  scatter-plot for the data.

The next step is to click the Add chart element feature and insert an exponential trend line to the scatter plot ensuring the display equation on chart is checked.

The exponential regression equation for the data set is given as;

y=12.321e^{-0.464x}

To find the missing y value, we simply substitute x with 2 in the regression equation obtained;

y=12.321e^{-0.464(2)}\\\\y=4.8710

5 0
3 years ago
Solve x^2 + 5x+6 = 0
prisoha [69]

Answer:

X=-2or,-3

Step-by-step explanation:

X^2+5x+6=0

or,x^2+(2+3)x+6=0

or,x^2+2x+3x+6=0

or,x(x+2)+3(x+2)=0

or,(x+3) (x+2)=0

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I HOPE IT WILL HELP YOU

7 0
3 years ago
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Vesna [10]
0.04035. that's it I think
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