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frosja888 [35]
3 years ago
12

Someone help me with pre cal?

Mathematics
1 answer:
Aloiza [94]3 years ago
3 0
I am learning Geometry right now. And then I don’t know can I help you or not.
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A bookcase has two shelves. The top shelf has 10 more than 1/3 the number of books on the bottom shelf. There are 12 books on th
kobusy [5.1K]

Answer: b.14

Step-by-step explanation:

We have two shelves, the top shelf s_{t} and the bottom shelf s_{b}.

Now, firstly we are told the top shelf has 10 more than 1/3 the number of books on the bottom shelf. This can be expressed as:

s_{t}=10+\frac{1}{3}s_{b} (1)

Then, we are told there are 12 books on the bottom shelf:

s_{b}=12 (2)

Substituting (2) in (1):

s_{t}=10+\frac{1}{3}(12) (3)

s_{t}=10+\frac{12}{3} (4)

s_{t}=14 (5) This is the number of books on the top shelf

Hence, the correct option is b.

6 0
3 years ago
Answer this question is it <br> A <br> B <br> C or<br> D
jasenka [17]

Answer:

B and D (

Step-by-step explanation:

1*2/3*2=2/6

1*3/3*3=3/9

5 0
3 years ago
I need help it has to be correct
Bess [88]

Answer:

cosine = adjacent / hypotenuse

cosine 62º = JL / 17

JL = cosine 62º * 17

JL = .47 * 17

JL = 7.99

JL = 8.0

Step-by-step explanation:

5 0
3 years ago
What is the similarity ratio of the smaller to larger similar cones?
Flura [38]

V=1024 pi m^3 and v=250 pi m^3
the similarity ratio of the smaller to larger similar cones is 
k= V/v=1024 pi m^3/250 pi m^3= 4.096
the great cone is 4.096 times of the small cone (in volume)
6 0
3 years ago
Read 2 more answers
Find the five number summary for the data set shown below.
grin007 [14]
Minimum: 1

Q1: 2.5

Q2: 5

Q3: 7

Maximum: 13
5 0
2 years ago
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