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3 years ago

14

What is the domain and range for the function f(x) = x2 + 4x - 21?

1 answer:

bezimeni [28]3 years ago

3 0

Answer:

Domain: (−∞,∞),{x|x∈R}

Range: [−25,∞),{y|y≥−25}

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It is estimated that there are 10^20 grains of sand on a beach in Florida in April. The beach is heavily eroded by tourists over

lyudmila [28]

$\bf \textit{how much is }\frac{1}{100}\quad of \quad 10^{20}?\implies \stackrel{\textit{one hundredth}}{\cfrac{1}{100}}\cdot 10^{20}\implies \cfrac{1}{10^2}\cdot 10^{20}
\\\\\\
10^{-2}\cdot 10^{20}\implies 10^{-2+20}\implies 10^{18}
\\\\\\
1,000,000,000,000,000,000~grains$

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2 years ago

If a coin is flipped 70 times how many times should it land with tails side face up

Snezhnost [94]

Answer: 35

Explanation:

P(Tail) = 1/2

P(Tail) for 70 times = 1/2 x 70 = 35

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2 years ago

Read 2 more answers

Solve for x in the equation shown below

baherus [9]

Answer:

x = 14

Step-by-step explanation:

Step 1: First, Simplify the fraction.

$\frac{4x}{7} =8$

Step 2: Next, Multiply both sides by 7.

4x = 8 × 7

Step 3: Simplify 8 × 7 to 56.

4x = 56

Step 4: Then, Divide both sides by 4.

$x=\frac{56}{7}$

Step 5: Lastly, Simplify the fraction and you're done!

x = 14

3 0

3 years ago

Help please i have 0 clue on what to do

zheka24 [161]

Answer:

Step-by-step explanation:

$9x6x12$ = 648 the length(12m), width(6m), and height(9m) that all i can give you for now because this got me losing brain sells

5 0

3 years ago

Read 2 more answers

1. Convert 60° to radians.

hram777 [196]

Answer:

60° = $\frac{\pi }{3}$ radians

Step-by-step explanation:

To convert from degrees to radians

radian measure = degree measure × $\frac{\pi }{180}$

Thus 60° in radian measure

= 60 × $\frac{\pi }{180}$ ( divide ( cancel) 60 and 180 by 60 )

= $\frac{\pi }{3}$

5 0

3 years ago