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dimulka [17.4K]
2 years ago
12

Evaluate 3x for x = -2, x = 1, and x = 3.

Mathematics
2 answers:
xenn [34]2 years ago
8 0

Answer: A. 1/9, 3, 27

Step-by-step explanation:

3^x for x = -2

= 3^-2 = 1/9

3^x for 1

= 3^1 = 3

3^x for 3

= 3^3 = 27

hope this helped

marusya05 [52]2 years ago
5 0
Option A is correct.

Put the values of x in 3^x and you will get the answer corresponding to option A
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Step-by-step explanation:

= 55 - 2x is the answer .

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3 years ago
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Which decimal number is equal to 2/3? <br><br><br> 0.6<br><br> 0.66<br><br> 0.6.......<br><br> 0.67
Roman55 [17]
2/3 = .66
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A bucket contains 40 red balls, 25 black balls, and 35 white balls. Two balls are drawn at random. What is the probability that
Lyrx [107]

Answer:

Probability = \frac{1}{5} or Probability = 0.2

Step-by-step explanation:

Given

Black = 25

White = 35

Red = 40

Required

Determine the probability of selecting Black and Red

First, we need to calculate the number of red and black balls

The probability is calculated as thus:

Probability = P(Black\ and \ Red) \ or\ P(Red\ and \ Black)

Convert to mathematical expressions

Probability = [P(Black) *P(Red)] + [P(Red) *P(Black)]

Solve for each probaility;

P(Black) = \frac{Black}{Total} = \frac{25}{100}

P(Red) = \frac{Red}{Total} = \frac{40}{100}

So, we have:

Probability = [P(Black) *P(Red)] + [P(Red) *P(Black)]Probability = [\frac{25}{100} *\frac{40}{100}] + [\frac{40}{100} *\frac{25}{100}]

Probability = [\frac{1000}{10000}] + [\frac{1000}{10000}]

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3 years ago
(Question Is In The Picture, Kinda Bad)
11111nata11111 [884]

Answer:

72 cupcakes

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Morgan can make 4 cupcakes with one cup of flour. She has 18 cups of flour and suppose she can make x cupcakes, then

1 cup of flour - 4 cupcakes

18 cups of flour - x cupcakes

Write a proportion:

\dfrac{1}{18}=\dfrac{4}{x}

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1\cdot x=18\cdot 4\\ \\x=72\ cupcakes

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3 years ago
PLZ fast I will give for best
kakasveta [241]

Answer:

6

Step-by-step explanation:

Multiply both sides of the equation by 2

3x-4=14

Add 4

3x=18

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x=6

Good luck! Let me know if you need more help.

5 0
3 years ago
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