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ser-zykov [4K]
3 years ago
7

5 x 2^x= 40 What is the value of x?

Mathematics
1 answer:
kifflom [539]3 years ago
6 0

Answer:

x=3

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable

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The area of a trapezoid is 168cm2. The height is 16cm and the length of one of the parallel sides is 9cm. Find the length of the
dmitriy555 [2]

Answer:

12 cm

Step-by-step explanation:

The formula for the area of a trapezoid is written as:

1/2(b1 + b2)h

h = height = 16 cm

b1 = Length of one parallel side = 9cm

b2 = Length of second parallel side = ?

Area of trapezoid = 168cm²

The formula to find the length of the second parallel side =

b2 = 2A/h - b1

b2 = 2 × 168/16 - 9

b2 = 336/16 - 9

b2 = 21 - 9

b2 = 12cm

Therefore, the length of the second parallel side is 12 cm

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3 years ago
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42.25

Step-by-step explanation:

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3 years ago
Assume that the function f is a one-to-one function, (a) f(8) = 9, find f ^ -1 (9)
Annette [7]

(a) since we are given that f(8) = 9, the inverse of 9 is simply 8. Therefore, f^-1(9) = 8.

(b) Again, f is the inverse of f^-1, therefore, you simply switch numbers, and you get that f(-3) = -7.

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PLSSS HELP IF YOU TURLY KNOW THISS
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Refer the attachment

Make me as brain liest

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