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ad-work [718]
3 years ago
14

Find the solutions to the equation below. Check all that apply. 2x^2 + 1-1x + 5 = 0

Mathematics
2 answers:
Serggg [28]3 years ago
7 0
Is -2 and option cause tbh that’s what i keep getting
IrinaK [193]3 years ago
6 0

Answer:

Step-by-step explanation:

The trick here is that the equation factors.

y= 2x^2 + 11x + 5

y = (2x + 1)(x + 5)

So either

2x + 1 = 0         subtract 1 from both sides      

2x = - 1             divide by 2  

2x = -1/2

or

x + 5 = 0          Subtract 5 from both sides

x = - 5

Answer: B and D

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The distribution of head circumference for full term newborn female infants is approximately normal with a mean of 33.8 cm and a
enyata [817]

Using the normal distribution, it is found that 95.65% of full term newborn female infants with a head circumference between 31 cm and 36 cm.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 33.8, \sigma = 1.2

The proportion of full term newborn female infants with a head circumference between 31 cm and 36 cm is the <u>p-value of Z when X = 36 subtracted by the p-value of Z when X = 31</u>, hence:

X = 36:

Z = \frac{X - \mu}{\sigma}

Z = \frac{36 - 33.8}{1.2}

Z = 1.83

Z = 1.83 has a p-value of 0.9664.

X = 31:

Z = \frac{X - \mu}{\sigma}

Z = \frac{31 - 33.8}{1.2}

Z = -2.33

Z = -2.33 has a p-value of 0.0099.

0.9664 - 0.0099 = 0.9565.

0.9565 = 95.65% of full term newborn female infants with a head circumference between 31 cm and 36 cm.

More can be learned about the normal distribution at brainly.com/question/24537145

#SPJ1

4 0
2 years ago
When a number is added to six times its square, the result is twelve. Find the number.
7nadin3 [17]
Let's represent our number as x.
x is being added to 6 * x², and it equals 12
x + 6x^{2}=12\\6x^{2}+x-12=0
Factor:
6x^{2}+x-12=0\\(2x+3)(3x-4)=0
Solve for x:
(2x+3)=0\\2x=-3\\x=\frac{-3}{2}\\\\(3x-4)=0\\3x=4\\x=\frac{4}{3}

Therefore, x = -3/2 and 4/3.
6 0
2 years ago
Read 2 more answers
- The taxi company charges $0.75 per mile
gladu [14]

Answer: y = .75x + 3

Step-by-step explanation:

y = .75x + 3

a) rate of change is .75x

b) initial value 3

c) independent is .75x

d) dependent is your y

6 0
3 years ago
Is the solution to a two-variable inequality always a solution of the related function? Explain.
kirza4 [7]
No not always. hope this helps have a nice day
6 0
2 years ago
Read 2 more answers
You are taking a trip at the same time as another family. Your family traveled 1,900 miles in 2 days, their family traveled 2,70
makkiz [27]
The other family is traveling at 900 miles per day while your family is traveling at 950 miles per day. So your family is traveling faster.
6 0
3 years ago
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