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2 years ago

8

Find an exponential function of the form y = ab* that passes through the points (0,4)

1 answer:

IrinaK [193]2 years ago

6 0

Answer:

2nd option

Step-by-step explanation:

given an exponential function in the form y = a $b^{x}$

to find a and b use the coordinate points it passes through

using (0, 4 ) , then

4 = a $b^{0}$ [ $b^{0}$ = 1 ] , that is

a = 4 , so

y = 4 $b^{x}$

using (2, 100 )

100 = 4b² ( divide both sides by 4 )

25 = b² ( take the square root of both sides )

$\sqrt{25}$ = b , that is

b = 5

then exponential function is

y = 4 . $5^{x}$

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Bill has enough money to buy no more than 1/2 pound of cheese. how much cheese could he buy?

quester [9]

Let
x: amount of pounds of cheese that Bill can buy.
We can write the following inequation for this problem
x <= 1/2
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answer
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3 years ago

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frosja888 [35]

Answer:

$1. \: 3i$

2. option D

3. option C

4. option D

5. option C

6. option B

7. option C

8. option D

9. option C

10. option C

Step-by-step explanation:

<h2> $1. \: \sqrt{ - 9}$ </h2>

$\sqrt{ - 1(9)}$

$\sqrt{ - 1} \times \sqrt{ 9}$

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<h2> $2. \: \sqrt{ - 8}$ </h2>

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$\sqrt{ - 1} \times \sqrt{8}$

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$i \times \sqrt{ {2}^{2} \times 2 }$

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$\sqrt{ - 1} \times \sqrt{80}$

$i \times \sqrt{80}$

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<h2> $4. \: \sqrt{ - 75}$ </h2>

$\sqrt{ - 1} \times \sqrt{75}$

$i \times \sqrt{75}$

$i \times \sqrt{ {5}^{2} \times 3 }$

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<h2> $5. \: \sqrt{ - 72}$ </h2>

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<h2> $6. \sqrt{ - 20}$ </h2>

$\sqrt{ - 1} \times \sqrt{20}$

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<h2> $7. \: \sqrt{ - 27}$ </h2>

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<h2> $8. \: \sqrt{ - 12}$ </h2>

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<h2> $9. \: \sqrt{ - 125}$ </h2>

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<h2> $10. \: \sqrt{ - 180}$ </h2>

$\sqrt{ - 1} \times \sqrt{180}$

$i \times \sqrt{ {6}^{2} \times 5 }$

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<h3>Hope it is helpful...</h3>

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