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Gekata [30.6K]
3 years ago
11

• Write an expression that is equivalent to 3(7 + x). 3(7 + x) + ? 2

Mathematics
2 answers:
stira [4]3 years ago
4 0

Answer:

21+3x

Step-by-step explanation:

maksim [4K]3 years ago
3 0

Answer:

21+3x

Step-by-step explanation:

Expand this:

3(7+x)

So it becomes:

21+3x

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A bag contains exactly three red marbles, five yellow marbles and two blue marbles. If three marbles are drawn from the bag with
Studentka2010 [4]

Answer:

  • 11/120

Step-by-step explanation:

  • Red = 3
  • Yellow = 5
  • Blue = 2

Possible options would be red or yellow as only two blue marbles.

<u>Probability of 3 red:</u>

  • 3/10*2/9*1/8 = 1/120

<u>Probability of 3 yellow:</u>

  • 5/10*4/9*3/8 = 1/12

<u>Probability of same three is:</u>

  • 1/120 + 1/12 = 11/120
3 0
3 years ago
25 POINTS!!!!!!!!!!<br> Evaluate log7 343.<br><br> A. 49<br> B. 3<br> C. −3<br> D. −49
BlackZzzverrR [31]
<span>The answer to this problem is 3.      3^7 is equal to 343.</span>
5 0
3 years ago
Read 2 more answers
Evan randomly selects 30 marbles from a bag. His data is given in the table.
Igoryamba
The probability of selecting a yellow marble is #of yellow marbles/total # of marbles= 6/30 or .2 or 20%

If there are 300 marbles in the bag, a good estimate for the total number of red marbles in the bag is 90.

9/30=.3 = the percentage of red marbles
.3(300) = 90

3 0
2 years ago
The portions of a house that need to be heated can be modeled by one rectangular prism with a length of 45 feet, a width of 20 f
nignag [31]

Answer:

12150 ft^3

Step-by-step explanation:

= (45)(20)(10) + (350)(9)

= 9000 + 3150

= 12150 ft^3

4 0
2 years ago
What is the the frequency of the sinusoidal graph ??
ira [324]
For e2020 the answer is C
8 0
3 years ago
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