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adell [148]
3 years ago
12

three points have coordinates A(-1,2),B(3,10)and C(p,8).Find the value (s) of p if AC is perpendicular to BC.

Mathematics
1 answer:
Reil [10]3 years ago
4 0

Step-by-step explanation:

All steps are in pic above.

<u>N</u><u>o</u><u>t</u><u>e</u><u>:</u><u>i</u><u>f</u><u> </u><u>y</u><u>o</u><u>u</u><u> </u><u>h</u><u>a</u><u>v</u><u>e</u><u> </u><u>a</u><u>n</u><u>y</u><u> </u><u>questions</u><u> </u><u>a</u><u>b</u><u>o</u><u>u</u><u>t</u><u> </u><u>i</u><u>t</u><u> </u><u>l</u><u>e</u><u>t</u><u> </u><u>m</u><u>e</u><u> </u><u>k</u><u>n</u><u>o</u><u>w</u><u>.</u>

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Student scores on exams given by a certain instruc-tor have mean 74 and standard deviation 14. Thisinstructor is about to give t
Alenkasestr [34]

Answer:

Step-by-step explanation:

Given that Student scores on exams given by a certain instruc-tor have mean 74 and standard deviation 14.

                                      Group I  X             Group II Y

Sample mean                     74                          74

n                                         25                          64

Std error (14/sqrtn)             2.8                        1.75

a) P(X>80) =1-0.9839\\= 0.0161

b) P(Y>80) = 1-0.9997\\=0.0003

c) X-Y is Normal with mean = 0 and std deviation = \sqrt{2.8^2+1.75^2} \\=3.302

P(X-Y>2.2) = 1-0.8411\\=0.1589

d) P(\bar x -\bar Y>2.2) = 0.1589

7 0
3 years ago
Sum of 5 times of x and thrice of y is 106​
Lostsunrise [7]

Answer:

<h3>sum of 5 times of x and thrice of y is 106</h3>

\huge \boxed{5x + 3y = 106}

8 0
3 years ago
Read 2 more answers
Right answer gets BRAINYESST
Mariulka [41]

Answer:

check all below

Step-by-step explanation:

#1

1/6)^3

1/26 so answer 1 on number one

#2 what the heck is this 65+75= 140 not 120

65/120 = 54.16666% * 12600 = 6825 so 3

or 65/140 = 46.428% * 12600 = 5850

#3 number 4 makes the most since sense you get the WHOLE POPULATION

#4 1/5*1/2 or 1/10 = .10 * 100% = 10% or 3

#5

6+2+8+4 = 20

2 red marbles

2/20 = 1/10 = .10 * 100% = 10% or 2

7 0
2 years ago
In a study, Phoenix Marketing International identified Bridgeport, Connecticut; San Jose, California; Washington, DC; and Lexing
kati45 [8]

Answer:

The estimate of the percentage of millionaires in each of these cities:

                          Bridgeport      San Jose    Washington    Lexington Park

                                CT                 CA               D.C.                MD

Percentage of

Millionaires             9%                 12%              9%                 8.3%

Step-by-step explanation:

Data and Calculations:                            City

                            Bridgeport,     San Jose,   Washington,   Lexington Park,

Millionaire                   CT                 CA              D.C.                 MD

Yes                             45                  36               36                    33

No                              455               264             364                 367

Sample                      500               300             400                 400

Percentage of

 Millionaires            45/500         36/300         36/400           33/400

=                               0.09               0.12             0.09            0.0825

=                                 9%                 12%              9%               8.3%

3 0
3 years ago
Can you please help me fill this out thanks
soldi70 [24.7K]

Answer:

30 mm

Step-by-step explanation:

There are 4 sides to this parallelogram. Two of the sides have 3 mm as the length and the other two have 12 mm.

         2 (3 mm) + 2 (12 mm)

         = 6 mm + 24 mm

         = 30 mm

5 0
3 years ago
Read 2 more answers
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