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3 years ago

What is the value of the second one in 15.186

2 answers:

5 0

The second 1 in 15.186 is the one to the right of the decimal point, so the value is 1 tenth or 1/10.
Remember that when you're working with decimals the numbers to the right of the period go like this: Tenths, hundredths, thousandths and so on. So the total value of the numbers to the right of the decimal point is 186 thousandths or 186/1000.

Paladinen [302]3 years ago

4 0

Then 5 is ones and the 8 is hundrths

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Two quadratic functions are shown.

algol [13]

Answer: the function that has the smaller minimum is g(x), and the cordinates are (0,3)

Step-by-step explanation:

We have a function for f(x) and a table for g(x)

first, quadratic functions are symmetrical.

This means that if the minimum/maximum is located at x = x0, we will have that:

f(x0 + A) = f(x0 - A)

For any real value of A.

Then when we look at the table, we can see that:

g(-1) = 7

g(0) = 3

g(1) = 7

then the minimum of g(x) must be at x = 0, and we can see that the minimum value of g(x) is 3.

Now let's analyze f(x).

When we have a quadratic equation of the shape.

y = a*x^2 + b*x + c

the minimum/maximum will be located at:

x = -b/2a

In our function we have:

a = 3

b = 6

then the minimum is at:

X = -6/2*3 = -1

f(-1) = 3*(-1)^2 + 6*-1 + 7 = 3 - 6 + 7 = 3 + 1 = 4

Then the function that has the smaller minimum is g(x), and the cordinates are (0,3)

7 0

4 years ago

The speed of an object in space is shown in the graph <br><br> what is the slope of the line ?

fgiga [73]

Answer:

Step-by-step explanation:

The answer is fifteen

Explanation: 6-3/0.4-0.2=3 over 0.2 which is equivalent to 15

5 0

3 years ago

Read 2 more answers

What is the net force here and what direction will the object accelerate ?

Contact [7]

There is 100 N pushing the box to the right and 10 N pushing the box to the left

since there is force being applied in opposite directions, the net force is found by subtracting the 2

100 - 10 = 90 N ( Net Force)

and because the higher force is pushing the box to the right, the direction will accelerate to the right.
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6 0

4 years ago

The diameter of a sphere is 16 cm. What is the sphere's volume? Round to the nearest tenth. A) 971.7 cm3 B) 1072.3 cm3 C) 1137.4

Digiron [165]

Answer:

Step-by-step explanation:

4 0

3 years ago

Independent random samples from two regions in the same area gave the following chemical measurements (ppm). Assume the populati

Basile [38]

Answer:

d. The interval contains only negative numbers. We cannot say at the required confidence level that one region is more interesting than the other.

Step-by-step explanation:

Hello!

You have the data of the chemical measurements in two independent regions. The chemical concentration in both regions has a Gaussian distribution.

Be X₁: Chemical measurement in region 1 (ppm)

Sample 1

n= 12

981 726 686 496 657 627 815 504 950 605 570 520

μ₁= 678

σ₁= 164

Sample mean X[bar]₁= 678.08

X₂: Chemical measurement in region 2 (ppm)

Sample 2

n₂= 16

1024 830 526 502 539 373 888 685 868 1093 1132 792 1081 722 1092 844

μ₂= 812

σ₂= 239

Sample mean X[bar]₂= 811.94

Using the information of both samples you have to determina a 90% CI for μ₁ - μ₂.

Since both populations are normal and the population variances are known, you can use a pooled standard normal to estimate the difference between the two population means.

[(X[bar]₁-X[bar]₂)± $Z_{1-\alpha /2}$ * $\sqrt{\frac{Sigma^2_1}{n1}+\frac{Sigma^2_2}{n_2} }$ ]

$Z_{1-\alpha /2}= Z_{0.95}= 1.648$

[(678.08-811.94)±1.648* $\sqrt{\frac{164^2}{12}+\frac{239^2}{16} }$ ]

[-259.49;-8.23]ppm

Both bonds of the interval are negative, this means that with a 90% confidence level the difference between the population means of the chemical measurements of region 1 and region 2 may be included in the calculated interval.

You cannot be sure without doing a hypothesis test but it may seem that the chemical measurements in region 1 are lower than the chemical measurements in region 2.

I hope it helps!

6 0

4 years ago