Solve by factorising x2+8x+15=0

Mathematics

2 answers:

Alex_Xolod [135]3 years ago

6 0

Answer:

Hi! The correct answer is x= -3 ,-5!

Step-by-step explanation:

<em>~Factor and set each factor equal to 0~</em>

nlexa [21]3 years ago

6 0

Answer:

(X+2) (X+6)=0

Step-by-step explanation:

X2+8x+12=0

or, X2+(2+6)X+12=0

or, X2+2x+6x+12=0

or, X(X+2) +6(X+2) =0

or, (X+2)(X+6)=0

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Alecsey [184]

2.75 Answer is 2.911

0.003 Make sure you line up the decimal points like shown in example

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2.911

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3 years ago

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the home teams score exceeded 2 times the hosting teams score by 5 if the visiting teams score is x which expression represents

babunello [35]

Answer:

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Step-by-step explanation:

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Based on the graph, what is the dependent variable, the equation relating the two variables, and how far will the dragonfly trav

ivann1987 [24]

Answer:

<h2>The dependent variable is distance, the equation is y = 20x, and the dragonfly will travel 480 miles.</h2>

Step-by-step explanation:

According to the graph, the dependent variable is Distance in miles, because it's on the vertical axis. Additionally, the independent variable is time in hours, because it's on the horizontal axis. However, you always put time as independent, because nothing affects time.

To find the equation, we just need to find the slope, using two points (0,0) and (2,40).

$m=\frac{y_{2} -y_{1} }{x_{2} -x_{1} }=\frac{40-0}{2-0}=20$