Answer:
7
Step-by-step explanation:
We are given that a function
Domain=W(whole numbers set)
Range=W(Whole number set)
Assign each whole number to its largest place value digit.
We have to find the value of f(257).
For example
f(4)=4
f(14)=4
f(194)=9
Therefore, f(257)=7 because largest place value digit is 7 in 257.
◆ Linear equations in two Variables ◆
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Check the attachment.
Hope it helps you :)
P.s. As you can see , above expressions have only one unique solution satisfying both equations
Answer:
1:3, 1:2, 3:5, 2:3, 3:4, 4:5, 1:1
Step-by-step explanation:
1 : 2 = 1/2 = 0.5
2 : 3 = 2/3 = 0.6666666667
3: 4 = 3/4 = 0.75
4:5 = 4/5 = 0.8
1:3 = 1/3 = 0.333333...
1:1 = 1/1 = 1
3:5 = 3/5 = 0.6
so let's arrange this from the smallest number to the biggest
the smallest is 0.333.. = 1:3
the second is 0.5 = 1:2
the third maybe tricky because both start with 0.6
but 2:3's 0.6 is greater because 0.6 is the same as 0.60. Since 66 is greater than 60, 0.6 is not greater than 0.66. so the third is 0.6 = 3:5
the fourth is 0.6666666667 = 2:3
the fifth is 0.75 = 3:4
sixths is 0.8 = 4:5
and the last and the greatest number is 1 = 1:1
∵ the two triangles are congruent
AB / AD = BC / DE
8/4 = 6/ DE
DE = 6 x 3 ÷ 8 = 3 cm
3^2+x^2=8^2
9+x^2=64
x^2 = 64-9=55
The answer is B