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muminat
3 years ago
12

Raven wants to plant 35 marigold plants, 20 zinnia plants, and 15 daylily plants in her flower garden. If she puts the same numb

er of plants in each row and if each row has only one type of plant, what is the greatest number of plants she can put in one row?
Mathematics
1 answer:
Sedbober [7]3 years ago
7 0
The greatest amount would 5 in each row,
five can go into 15, 3 times; it also goes into 20 4 times.
So each row would have the same amount just the 20 zinnia plants would have one more row .
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james got 19 questions right on a math test. These questions made up 76% of the test.How many questions were there on the test?​
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6 0
2 years ago
Read 2 more answers
Suppose we want to choose 4 colors, without replacement, from 18 distinct colors.
amm1812

Answers:

  • (a) 73440
  • (b)  3060

=====================================================

Explanation for part (a)

Consider four slots labeled A,B,C,D.

We have

  • 18 choices for slot A
  • 17 choices for slot B
  • 16 choices for slot C
  • 15 choices for slot D

We started at 18 and counted down until we filled the four slots. The countdown is because we cannot repeat a color. Multiply out those values to get the answer: 18*17*16*15 = 73440

You can use the nPr permutation formula as an alternative method

_nP_r = \frac{n!}{(n-r)!}

in this case n = 18 and r = 4. The exclamation marks indicate factorial.

-----------------------------------

Explanation for part (b)

Let's say we had color labels A,B,C,... all the way up to R which is the 18th letter in the English alphabet. From those 18 letters, we can only pick four. Let's say we pick D,E,F,G.

Focusing solely on the set {D,E,F,G}, we only have one set and the order doesn't matter. So {D,E,F,G} is the same as {D,E,G,F}.

There are 4*3*2*1 = 24 ways to arrange those four items meaning that we'll need to divide the result of part (a) by 24 to get the result of part (b)

73440/24 = 3060

You could use the nCr combination formula to get the same result

_nC_r = \frac{n!}{r!(n-r)!}

where n = 18 and r = 4 are the same from last time.

The connection between nPr and nCr is this

_nC_r = \frac{_nP_r}{r!}

which can be rearranged into

_nP_r = r!*\left( _nC_r \right)

these formulas are handy to help us go back and forth between nCr or nPr.

8 0
3 years ago
The price of apples is $3.60 for 3 pounds write the price as a unit rate
Finger [1]

Take the total and divide by the amount to get answer.

3.60 /3 = $1.20 per pound

4 0
3 years ago
Please help !<br> I need the answers for #43 and #44
Vlad [161]

43. 9 + 10 + 13 + 13 = $45

45 - 1 = 44

44 x 4 = 176

176 + 8 = 184

184/4 = 46

46 tokens per person

44. a. 22 x 5 = 110

943/110 = 8.7

you will need 9 bookcases

b. 110 x 9 = 990

990 - 943 = 47

47 - 44 = 3

There will be 3 books on the third shelf.

4 0
3 years ago
Express the following as Decimal place 75%
Katyanochek1 [597]

Answer:

Step-by-step explanation:

75% = 75/100 = 0.75

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3 years ago
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