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Pani-rosa [81]
2 years ago
6

Solve by factorising x2+8x+15=0

Mathematics
2 answers:
Alex_Xolod [135]2 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]2 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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Give at least four different symbols that have been used to represent specific statistical measures. Describe what measure each
natta225 [31]

Answer:

Variance                    0²

standard deviation   0×

mean                          α

median                      x-bar

Step-by-step explanation:

these are the four different symbols that have been used to represent specific statistical measures like for example, mean which is used to calculate the average value of a sample or population. Variance is the what is expected from the squared standard deviation of a random variable from is average vale/ mean. Median is the value that lies in the middle in a random sample and lastly the standard deviation is the square root of the variance and it measures how the values of sample are spread or how far are they from the mean. these are also commonly use in excel a lot to calculate and evaluate data.

6 0
2 years ago
A land mass is roughly in the shape of a rectangle whose perimeter is 1200 miles the width is 120 miles less than the length fin
Ostrovityanka [42]

Answer:

Length: 360. Width: 240.

Step-by-step explanation:

360 * 2 = 720

240 * 2 = 480

720 + 480 = 1,200

7 0
2 years ago
V-16=-32<br>I need help with the math worksheet how to solve the question
sergeinik [125]

You solve an equation like this by adding the opposite of the constant to both sides of the equation.

... V -16 +16 = -32 +16 . . . . . addition property of equality: if a=c, then a+b = c+b

... V + 0 = -16 . . . . . . . . . . . . additive inverse property of integers: -16+16 = 0

... V = -16 . . . . . . . . . . . . . . . identity element of addition: V+0 = V

_____

<em>You can always do the same thing to both sides of an equation.</em> Here, it is useful to add the opposite of -16 to both sides. That way the constant on the left becomes zero, so you only have the variable by itself—which is what you want.

8 0
3 years ago
What fraction is larger 7/8 or 14/16
Bas_tet [7]
7*2=14 8*2=16 which is 14/16 so they are the same

3 0
3 years ago
The inequality x &lt; 9 or x ≥ 14 can be used to represent the hourly wage, x, of each employee at a store. Which are possible v
Elodia [21]

Answer:

$11, $13, $14

Step-by-step explanation:

all of those answers are greater than $9 but less than or equal to $14.

7 0
3 years ago
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