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Rudik [331]
4 years ago
13

HELP PLS

Mathematics
1 answer:
swat324 years ago
6 0

Answer:

45

Step-by-step explanation:

5-4

25-20

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4/2/3−1/1/3÷2 four and two thirds - one and one thirds divided by two
zhannawk [14.2K]
2/3 two over three I’m pretty sure I’m good at this stuff hope I helped.
8 0
3 years ago
What type of polynomial is 2a-4b+7c
Andrei [34K]

Answer: trinomial

Step-by-step explanation:

Monomials have one variable (2a)

Binomials have two variables (2a - 4b)

Trinomials have three variables (2a - 4b + 7c)

Polynomials are any equations that have 4 or more variables.

7 0
2 years ago
Mabel is the costume manager for a large theater company. She has 20 different hats,
SashulF [63]

Answer:

4/20 or 1/5 being simplified

Step-by-step explanation:

8 0
3 years ago
The sum of three consecutive odd numbers is 69. What are the three numbers?
n200080 [17]

Answer:

21, 23, 25

Step-by-step explanation:

Ok, so this one may seem a little tricky, so I'll try to explain it as best as I can. :)

So because they are consecutive odd numbers, that means they are odd numbers that are one after the other. This means each number is 2 apart from the next. So by using this, we know that there is a difference of 6 between the highest and lowest number. Now let's try and make an equation:

3o + 6 = 69

Now in order to get O by itself we have to subtract 6 from both sides:

3o = 63

Now we just have to divide by three on both sides:

o = 21

So now, we know that the lowest number is 21, but we have to add 2 to get 23, and then another 2 to get 25.

Hope this helps :)

5 0
3 years ago
Read 2 more answers
The Hoover Dam in the U.S produces 2 x 10 ^9 Watts of electricity and is composed of 7 x 10^9 kg of concrete. Concrete requires
kondaur [170]

Answer:

1) 7 x 10^{15} J

2) 40.5 days

Step-by-step explanation:

1) First of all we use 1MJ=1x10^{6}J so the total energy will be 7x10^{9} kg * 1x10^{6} \frac{J}{kg} =7x10^{15}J.

2)Then we use 1W=1\frac{J}{s} and Time=\frac{7 x 10^{15} J }{2x10^{9}J/s} =3.5x10^{6}s or 3.5x10^{6}s*\frac{1h}{3600s}*\frac{1day}{24h} =40.5 days

4 0
3 years ago
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