if 96 people were surveyed how many people voted woodpecker than for pelican? pelican=5/12 woodpecker =7/12

1 answer:

6 0

So first you would put these over a common denominator which is 96. You get this by multiplying by 9 and what you do to the denominator you must do to the numerator so you then get 45/96 and 63/96. Pelicans=45/96. Woodpeckers=63/96

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A rectangular picture frame measures 63 cm by 63 cm. What is the perimeter or distance around the picture frame in meters? m

Natalija [7]

Hi!

We need the perimeter in meters, so we have to turn cm into m.
63 cm = 0.63 m

The perimeter is the sum of all side measures:
P = 0.63 + 0.63 + 0.63 + 0.63
P = 4 * 0.63
P = 2.52 m

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6 0

3 years ago

The cost of 3 notebooks and 4 pencils is $8.50. Determine the cost of one notebook and one pencil

Assoli18 [71]

Call the notebooks x, and the pencils y.
3x + 4y = $8.50 and 5x + 8y = $14.50 
Then just solve as simultaneous equations: 
3x + 4y = $8.50 
5x + 8y = $14.50 

5(3x + 4y = 8.5) 
3(5x + 8y = 14.5) 

15x + 20y = 42.5 
15x + 24y = 43.5 

Think: DASS (Different Add, Similar Subtract). 15x appears in both equations so subtract one equation from the other. Eassier to subtract (15x + 20y = 42.5) from (15x + 24y = 43.5) 

(15x + 24y = 43.5) - (15x + 20y = 42.5) = (4y = 1) which means y = 0.25. 

Then substitue into equation : 
15x + 20y = 42.5 
15x + 5 + 42.5 
15x = 42.5 - 5 = 37.5 
15x = 37.5 
x = 2.5 

15x + 24y = 43.5 
15(2.5) + 24(0.25) 
37.5 + 6 = 43.5 

So x (notebooks) are 2.5 ($2.50) each and y (pencils) are 0.25 ($0.25) each.

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3 years ago

Factor with steps please!!!

myrzilka [38]

So you want to find two numbers that add up to -13 and multiply to 40. You can find the factors of 40 and find the pair that adds up to -13. -8 and -5 multiply to 40 and add up to -13.

(x−5)(x−8)=x2−13x+40

You can use foil to test it

x2+(−8x)+(−5x)+40=x2−13x+40

x2−13x+40=x2−13x+

4 0

3 years ago

2. A certain TV can be purchased from the manufacturer for $160. A certain online retailer has a standard markup of 30%, and a c

Dennis_Churaev [7]

100+30=130
100+40=140

online price is 130% or original
superstore price is 140% or original
the difference bewteen them is 140-130=10% of the original price

A. 1.3 times 160=208=online
1.4 times 160=224=superstore

B. difference is 224-208=16=10% of 160
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A. online=$208
superstore=$224

B. $16, this is 10% of the original price

6 0

3 years ago

What is the answer?

7nadin3 [17]

Answer:

x=8.5

Step-by-step explanation:

3 angles of a triangle = 180 degrees

c=45 a=50

180=45+50+b

130=45+b

85=b

b=d

d=85

10x=85

x=8.5

5 0

3 years ago