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tatuchka [14]
2 years ago
5

X2 + 3x + 1 = 5. know the answer but need to understand how?

Mathematics
1 answer:
Ket [755]2 years ago
3 0

Answer:

x=-4,\: x=1

Step-by-step explanation:

x^2+3x+1=5\\\\x^2+3x-4=0\\\\(x+4)(x-1)=0\\\\x=-4,\: x=1

Make sure you use the Zero Product Property to solve for each factor when the equation is set equal to 0 and can be factored.

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The wingspans of a common species of housefly are normally distributed with a mean of 5mm and a standard deviation of 0.5mm. Sup
Anuta_ua [19.1K]

Answer:

Approximately Normal

Step-by-step explanation:

Since the population is normally distributed, the sampling distribution of the sample mean will also be normally distributed, even when the sample size is small.

6 0
2 years ago
What happens to the volume of a rectangular prism when its length is tripled?
earnstyle [38]

The volume of a rectangular prism is represented by the following equation:

V=wlh

where w is the width , l is the length, and h is the height

Replace l with 3l since the length is tripled

V_0=w(3l)h

=3(wlh)

From this, we see that this new volume is 3x larger than the original. Thus, the volume is tripled when its length is tripled.

Let me know if you need any clarifications, thanks!

3 0
3 years ago
There are 13 monkey. 6 are small. The rest are big. How many monkeys are big?
nlexa [21]

Answer:

7 monkeys

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
15=-6 you solve the left side, 7+6 which is 15
Nimfa-mama [501]

Answer:

15=13

Step-by-step explanation:

15=-6 you solve the left side, 7+6 which is 15?

15=-6 =

7+6 = 13

15=13

i'm not sure...

7 0
3 years ago
Read 2 more answers
Which order pair is a solution of this equation. 5x+y=-25
crimeas [40]

Answer:

(-5,0) or (0,-25) is another solution

Step-by-step explanation:

Do you have a list of choices? If not, you could choose random choices for x and y to determine if they are solutions. Start by letting y = 0. We see that x = -5, so (-5, 0) is a solution to this equation. In fact, it represents the x-intercept of this line. Now, let x = 0. We now see that y = -25, so (0, -25) is another solution to the equation of this line. This coordinate pair is the y-intercept of the line. Try using other values of x and y to see if you can come up with other solutions to this equation. 

7 0
3 years ago
Read 2 more answers
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