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Nookie1986 [14]
4 years ago
13

Please help PLEASE HELP

Mathematics
1 answer:
alexdok [17]4 years ago
5 0

Answer:

15. 17.5 ft

16. XZY ~ RPQ only

Step-by-step explanation:

15. The figure shows you the height of the object is 5/6 the length of its shadow. Then the height of the tree will be (5/6)·21 ft = 17 1/2 ft.

__

16. Triangles are similar when they have all the same angles. In the given triangles, you have ...

angle X = angle R = 32° . . . . (no corresponding angle in the third triangle)

angle Z = angle P = 64°

angle Y = angle Q = 84°

The triangle vertices need to be named in the order in which they correspond, so we can say, for example, ...

triangle XZY ~ triangle RPQ

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This circle graph shows how Jimmy spent his time during the last 24 hours.
MariettaO [177]

Answer:

Excess time = 1.2 hour

Step-by-step explanation:

Given:

Total time = 24 hours

Talking on phone = 17 %

Sleeping = 33%

Going to school = 25%

Studying = 4%

Eating = 8%

Computation:

Watching TV percent = 100% - Talking on phone - Sleeping - Going to school - Studying -  Studying - Eating

Watching TV percent = 100% - 17% - 33% - 25% - 4% - 8%

Watching TV percent = 13%

Time taken by school = 24 x 25%

Time taken by school = 6 hour

Time taken by watching T.V. and Talking on the Phone = 24 x (13% + 17%)

Time taken by watching T.V. and Talking on the Phone = 7.2 hour

Excess time = 7.2 - 6

Excess time = 1.2 hour

3 0
3 years ago
What percent is students walk home from school
AveGali [126]

Answer:

50percent

Step-by-step explanation:

5 0
3 years ago
) What is the area of triangle QBA? Enter only the number to represent the area below. plz i need the answer
olasank [31]

Answer:

14

Step-by-step explanation:

Even though the triangle is "upside down"

a = (1/2)bh

b is QB = 4

h is QA = 7

a = (1/2) * 4 * 7

a = 14

8 0
3 years ago
I WILL MARK YOU THE HIGHEST IF RIGHT!!!! NEED HELP ASAP (CANT GET THIS ONE RIGHT.
vitfil [10]
The correct answer is:   [A]:  " 2" . 
_______________________________________________________
Explanation:
_______________________________________________________

5x - 4 = 3x ; 

Subtract "3x" from each side of the equation; 

5x - 4 - 3x = 3x - 3x ; 

2x - 4 = 0 ; 

Add "4" to each side of the equation; 

2x - 4 + 4 = 0 + 4 ; 

2x = 4 ; 

Divide each side of the equation by "2" :

2x / 2  =  4 / 2 ;

  x = 2 ;   which is:  "Answer choice:  [A]:  " 2" . 
____________________________________________________
3 0
3 years ago
You want to estimate the probability that a lightbulb of a famous brand will last more than 6.500 hours. You choose 10,000 bulbs
brilliants [131]

Answer/Step-by-step explanation:

(a) The likelihood function to estimate this probability can be written as:

mat[1000, 9800]p9580(1 - p)420

(b) The value of the maximum likelihood estimate of the probability 0.958(By taking log of expression in (a) above)

(c) when the true probability is 98%, then it implies that 9800 of 10,000 bulbs did last over 6500hours.

Therefore, the likelihood is p(9800) = mat[10000, 9800]p9800(1 - p)200

(d) Method of moments estimate is the estimation of all the parameters of the population sample.

(e) The statement is FALSE because estimates by the method of moments are not necessarily sufficient statistics, because sometimes fail to take into account all relevant information in the sample. As in the above question

4 0
3 years ago
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