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ss7ja [257]
3 years ago
8

Evan's favorite hobby is origami. He plans to make 100 paper cranes to hang from the ceiling of his bedroom. Yesterday, he made

28 paper cranes in 4 hours. Today, he made 21 paper cranes at the same rate. How long did Evan spend making paper cranes today?
Mathematics
2 answers:
shusha [124]3 years ago
8 0

Step-by-step explanation:

Vitek1552 [10]3 years ago
5 0

Answer:

Step-by-step explanation:

30

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What is the percent of the figure is shaded?
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Answer:

7/10 is shaded

so 7/10×100= 70%

7 0
3 years ago
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2b^2+4b–2=0 what is the answer?
s2008m [1.1K]
2b^2+4b-2=0\\
2(b^2+2b-1)=0\\
2(b^2+2b+1-2)=0\\
2((b+1)^2-2)=0\\
2(b+1)^2-4=0\\\
2(b+1)^2=4\\\
(b+1)^2=2\\
b+1=-\sqrt2 \vee b+1=\sqrt2\\
b=-1-\sqrt2 \vee b=-1+\sqrt2


5 0
3 years ago
Hey some help please and thank.
tatyana61 [14]
Think of how many there are. im not sure if you put these into ratios or not...

like for number 3 think of how many numbers 1-9 are multiples of three

1  2  3  4  5  6  7  8  9

and once you get that number you make it out of 9 because there were 9 numbers

Example

3:9  3/9 

for questions one and two its out of 52 and if you don't know how many clubs and hearts are in a deck you can look it up and put it in a ratio with 52
7 0
3 years ago
Please I need help ASAP
jasenka [17]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
How do you reduce fractions?
Irina18 [472]
4/12=1/3
8/14=4/7
6/8=3/4
3/6=1/2
5/15=1/3
4 0
3 years ago
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