Answer:
x = 90
Step-by-step explanation:
Since the triangles are similar then the ratios of corresponding sides are in proportion, that is
=
, substitute values
=
( cross- multiply )
3x = 270 ( divide both sides by 3 )
x = 90
1/4x+2=-4 how do you do this step by step?
1 answer:
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Answer:
Length is 182 cm and width is 158 cm.
Step-by-step explanation:
Given:
Perimeter of rectangle table = 680 cm.
Let the width of the table be .
Now according to given length of the table is 24 cm more than the race the width
hence length = .
But perimeter of rectangle = 2(length+width)
Substituting the values we get;
Hence width = 158 cm
Now, length = 24 cm + width = 24 cm + 158 cm = 182 cm
Hence the dimension of table are 182 cm and 158 cm.
Answer: (103.74,112.06)
Step-by-step explanation:
The confidence interval for population mean is given by :_
Given : Sample size : n= 50
Sample mean :
Standard deviation :
Significance level :
Critical value :
Then the 95% confidence interval for the student IQ in the school will be :-
Hence, the 95% confidence interval for the student IQ in the school= (103.74,112.06)