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3 years ago

A square is 7 cm on each side what is the area

Mathematics

1 answer:

Zina [86]3 years ago

5 0

Answer:

49 cm²

Step-by-step explanation:

Formula for area:

a = l (length) x w (width)

if its 7 cm on each side, then the length and width will be 7

7*7 = 49 cm²

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Answer:

The third one :)

Step-by-step explanation:

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2 years ago

Write an exponential equation in the form y = abx whose graph passes through points (4, 8) and (6, 32).

Artist 52 [7]

Answer:

Option C.

Step-by-step explanation:

The general exponential equation is

$y=ab^x$

It is given that the graph of exponential function passes through points (4,8) and (6,32). It means the equation of exponential function must be satisfied by these points.

$8=ab^4$ ...(1)

$32=ab^6$ ...(2)

Divide equation (2) by equation (1).

$\dfrac{32}{8}=\dfrac{ab^6}{ab^4}$

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Taking square root on both sides.

$2=b$

Put b=2 in (1).

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$\dfrac{8}{16}=a$

$0.5=a$

Substitute a=0.5 and b=2 in the given general exponential equation.

$y=0.5(2)^x$

Therefore, the correct option is C.

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3 years ago

A function f is defined by f(x) = 2x - 3. By writing the full working, write the values of (a) f(0) (b) f(-2) (c) f(3) (d) f(-1)

AlladinOne [14]

A) f(x) = 2x - 3
f(0) = 2(0) - 3
f(0) = 0 - 3
f(0) = -3

b) f(x) = 2x - 3
f(-2) = 2(-2) - 3
f(-2) = -4 - 3
f(-2) = -7

c) f(x) = 2x - 3
f(3) = 2(3) - 3
f(3) = 6 - 3
f(3) = 3

d) f(x) = 2x - 3
f(-1) = 2(-1) - 3
f(-1) = -2 - 3
f(-1) = -5

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3 years ago

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For what number? do i just correct the ones you have or thell you all the answer?

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2 years ago