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zepelin [54]
3 years ago
5

Which number is a composite number? A.11 B.21 C.31 D.41

Mathematics
2 answers:
kobusy [5.1K]3 years ago
5 0

Answer:

21

Step-by-step explanation:

A prime number has only two factors: 1 and itself.

A composite number has more than two factors. The number 1 is neither prime nor composite.

aivan3 [116]3 years ago
5 0

Answer:

B. 21

Step-by-step explanation:

31 is the only number that can be made by multiplying another number other than 1 and itself.

1x21=21

3x7=21

all the other options only have 2 factors

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Kyle is having a party he has 43 hot dogs there will be 8 people at his party how many hotdogs will each person get
Brrunno [24]

each person will get 5 hot dogs.

Step-by-step explanation:

Total number of Hot dogs =43

Total number of people at party= 8

Each person will get hot dogs= \frac{Total number of Hot dogs}{Total number of people at party }

Each person will get hot dogs= \frac{43}{8}

Each person will get hot dogs= 5.37 or ≈ 5

So, each person will get 5 hot dogs.

Keywords: Word Problems

Learn more about Word Problems at:

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6 0
3 years ago
write and solve an equation to show thw average number of calendars her 3rd period class sold peer week during the four week cha
kari74 [83]
If they sold 89 calendars over 4 weeks, the 'equation' would look like (x = average calendars sold over 4 weeks):
x =  \frac{89}{4}

If you solve it, you get:
22 \frac{1}{4}

Which is equal to 22.25. Hope this helps!
5 0
3 years ago
Find the surface area of the sphere.
fenix001 [56]

Answer:

804 in^2

Step-by-step explanation:

The surface area of a sphere is given by A = 4πr^2, where r is the radius of the sphere.

Here, A = 4π*8^2 in^2 (must use units of measurement)

              =256π in^2, or approximately 804 in^2

4 0
3 years ago
Read 2 more answers
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
How many of 26  gallons can go into quarts
In-s [12.5K]
4 quarts is equal to 1 gallon
Just multiply 26 by 4 and get 104
4 0
2 years ago
Read 2 more answers
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