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ycow [4]
3 years ago
11

4 Round each number to one decimal place.

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
7 0

\\ \rm\star\leadsto 0.63=0.6

\\ \rm\star\leadsto 8.27=8.3

\\ \rm\star\leadsto 2.461=2.5

\\ \rm\star\leadsto 9.194=9.2

\\ \rm\star\leadsto 12.861=12.9

\\ \rm\star\leadsto 0.06=0.1

satela [25.4K]3 years ago
4 0

Step-by-step explanation:

  • 0.63= 0.6
  • 8.27= 8.3
  • 2.461= 2.46= 2.5
  • 9.194= 9.19= 9.2
  • 12.861= 12.86= 12.9
  • 0.06= 0.1
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Answer:

68 miles per hour

Step-by-step explanation:

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3 years ago
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Express the solution graphically of – }(2x + 1) < 3.
Anit [1.1K]

Answer:

The third one counting from the top.

Step-by-step explanation:

We have the inequality:

(-1/3)*(2x + 1) < 3

The first thing we need to do is isolate x on one side of the inequality.

First we can by -3 in both sides of the inequality, and remember, because we are multiplying by a negative number, the inequality sign changes its direction:

(-3)*(-1/3)*(2x + 1) > 3*(-3)

(2x + 1) > -9

Now we can subtract 1 in both sides:

2*x + 1 - 1 > -9 - 1

2*x > -10

Now we can divide by 2 in both sides:

2*x/2 > -10/2

x > -5

Then we should see a number line such that all the points at the right of -5 are colored.

The correct option is the third one, counting from the top.

7 0
3 years ago
A(n) = 1 + (n –1)(–5.7)
hammer [34]
Im guessing this is simplify so the answer would be 

<span><span>−<span>5.7n</span></span>+6.7</span><span>n
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What is the equation of a parabola whose vertex is at the origin and whose directrix is y = 3?
frutty [35]

Y^2=4*3*X=12X Hope this helps!

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To test if the mean IQ of employees in an organization is greater than 100, a sample of 30 employees is taken and the value of t
ivolga24 [154]

Answer:

p_v =P(t_{(29)}>1.42)=0.0831  

For this case the p value calculated is higher than the significance level used of 0.05 so then we have enough evidence to FAIL to reject the null hypothesis and the best conclusion for this case would be:

a) do not reject the null hypothesis and conclude that the mean IQ is not greater than 100

Step-by-step explanation:

Information given

We want to verify if he mean IQ of employees in an organization is greater than 100 , the system of hypothesis would be:  

Null hypothesis:\mu \leq 100  

Alternative hypothesis:\mu > 100  

The statistic for this case is given by:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

The statistic calculated for this case  t_{calc}= 1.42

The degrees of freedom are given by:

df=n-1=30-1=29  

Now we can find the p value using tha laternative hypothesis and we got:

p_v =P(t_{(29)}>1.42)=0.0831  

For this case the p value calculated is higher than the significance level used of 0.05 so then we have enough evidence to FAIL to reject the null hypothesis and the best conclusion for this case would be:

a) do not reject the null hypothesis and conclude that the mean IQ is not greater than 100

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3 years ago
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