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Alexxx [7]
3 years ago
9

► Given (blank)

Mathematics
1 answer:
Temka [501]3 years ago
8 0

Answer:

Through a given point there passes: one and only one line perpendicular to a plane. one and only one plane perpendicular to a line.

Step-by-step explanation:

You might be interested in
A company employs two shifts of workers. Each shift produces a type of gasket where the thickness is the critical dimension. The
Oksanka [162]

Answer:

a) [-0.134,0.034]

b) We are uncertain

c) It will change significantly

Step-by-step explanation:

a) Since the variances are unknown, we use the t-test with 95% confidence interval, that is the significance level = 1-0.05 = 0.025.

Since we assume that the variances are equal, we use the pooled variance given as

s_p^2 = \frac{ (n_1 -1)s_1^2 + (n_2-1)s_2^2}{n_1+n_2-2},

where n_1 = 40, n_2 = 30, s_1 = 0.16, s_2 = 0.19.

The mean difference \mu_1 - \mu_2 = 10.85 - 10.90 = -0.05.

The confidence interval is

(\mu_1 - \mu_2) \pm t_{n_1+n_2-2,\alpha/2} \sqrt{\frac{s_p^2}{n_1} + \frac{s_p^2}{n_2}} = (-0.05) \pm t_{68,0.025} \sqrt{\frac{0.03}{40} + \frac{0.03}{30}}

= -0.05\pm 1.995 \times 0.042 = -0.05 \pm 0.084 = [-0.134,0.034]

b) With 95% confidence, we can say that it is possible that the gaskets from shift 2 are, on average, wider than the gaskets from shift 1, because the mean difference extends to the negative interval or that the gaskets from shift 1 are wider, because the confidence interval extends to the positive interval.

c) Increasing the sample sizes results in a smaller margin of error, which gives us a narrower confidence interval, thus giving us a good idea of what the true mean difference is.

6 0
3 years ago
Each figure shows a triangle with one of its angle bisectors.<br> 12) 22 - 38°. Find mZTRS.
jarptica [38.1K]

Answer:

76 degrees

Step-by-step explanation:

this special line is an angle bisected.

that means it splits the angle at its starting point in 2 halves. as these names indicate, both parts are of equal size (half of the general angle).

we know one part (2) of this split angle : 38 degrees.

the other part (1) had to be equally sized : 38 degrees.

so, the total angle at point R is the sum of both split angles:

TRS = 38+38 = 76 degrees.

3 0
3 years ago
What is the probability of drawing a 9 of heart or an ace from a standard deck of cards? A. 7/52 B. 5/52 C. 5/26 D. 8/13 What is
Strike441 [17]
A for the first because  there are 4 aces and 1 nine of hearts. that makes it 5 cards of the 52 in a deck
d for the second because there are two cards: the queen of heart and and ace of diamond out of the 52

hope this helped :)

5 0
2 years ago
Solve the equations and graph the solution
jenyasd209 [6]

Given:

The inequalities are:

-5x or 2x

To find:

The solution for the given inequalities and graph the solution.

Solution:

We have,

-5x or 2x

Solve the above inequalities separately.

-5x

Divide both sides by -5.

x>\dfrac{-3}{-5}

x>\dfrac{3}{5}             ...(i)

And,

2x

Divide both sides by 2.

x

x                       ...(ii)

From (i) and (ii). we get

x or x>\dfrac{3}{5}

The interval notation of the solution is (-\infty,-4)\cup \left(\dfrac{3}{5},\infty\right).

The graph of the solution is shown below.

7 0
2 years ago
One card is drawn form a standard deck of 52 cards. What is the probability of <br> P(jack or red)
bazaltina [42]
2/52 which simplifies down to 1/26
7 0
3 years ago
Read 2 more answers
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