3 years ago

If x is a whole number and 437 = (21 + x)(21 - x), then x =

1 answer:

3 0

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garik1379 [7]

Answer:(c)

Step-by-step explanation:

Given

The initial value of Adam's model is $A_o=\$550$

the value increases exponentially with the rate of $r\%$

Time period $t=5\ years$

Final amount $A=\$736$

Exponential growth is given by

$\Rightarrow A=A_o(1+r)^t$

Putting values

$\Rightarrow 736=550(1+r)^5\\\\\Rightarrow (1+r)^5=1.338$

$\Rightarrow 1+r=1.05999\\\Rightarrow r=0.05999\ or\ 5.99\%\approx 6\%$

Option (c) is correct

6 0

3 years ago

svp [43]

Simple...

y= $x^{2} -9$

$y= x^{2} -9$

It's quite easy to see $x^{2} = x^{2}$

Thus, any value of x makes the equation true.

Thus, your answer.

7 0

3 years ago

kolbaska11 [484]

Answer:

y=-1/3 x +2/3

Step-by-step explanation:

all steps are in picture

4 0

3 years ago

diamong [38]

The eighth multiple of 8 is 64 .
The fifth multiple of 8 is 40 .
Their difference is 24 .

5 0

3 years ago

riadik2000 [5.3K]

Answer:

90 degree angles (perpendicular bisector of the line)

4 0

2 years ago