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Lesechka [4]
2 years ago
13

Julia knows that 65×4,903=318,695. Use this understanding to help Julia solve 6.5×4903

Mathematics
1 answer:
slamgirl [31]2 years ago
7 0

Answer:

31869.5

Step-by-step explanation:

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find three consecutive odd integers such that the sum of the smallest number and middle number is 27 less than 3 times the large
katrin2010 [14]

A generic odd number can be written as

2k+1,\quad k \in \mathbb{Z}

Since there is an odd number every two numbers, three consecutive odd numbers will be

2k+1,\quad 2k+3,\quad 2k+5

Now let's make up the equations: the sum of the first two is

(2k+1)+(2k+3)

And 27 less than 3 times the largest is

3(2k+5)-27

These two must be the same, so we have

(2k+1)+(2k+3)=3(2k+5)-27 \iff 4k+4 = 6k+30-27 \iff 4k+4=6k+3

Subtracting 4k and 3 from both sides gives

1=2k \iff k=\dfrac{1}{2}

Which means that the problem has no solution.

To confirm this hypothesis, we can observe that, on the left hand side, we have the sum of two odd numbers, which is even

On the right hand side, we have an odd number, multiplied by 3 (still odd), take away 27 (still odd).

So, the left hand side is even, and the right hand side is odd. They can't be the same number.

7 0
3 years ago
Solve for a<br><br> a² + 7a - 8 = 0
masya89 [10]

Answer:

a=-8

Step-by-step explanation:

5 0
3 years ago
F(x) =
slega [8]

Answer:

Step-by-step explanation:

the graph correspond to the function f :

6 0
3 years ago
A studemt is hiring a 3-kilometer race. he runs 1 kilometer every 2 minutes. select the function that describes his distance fro
Paha777 [63]
The answer which we found by inspection is
B. f(x) = -1/2x + 3
7 0
3 years ago
In one U.S city, the taxi cost is $2 plus $0.60 per mile. If you are traveling from the airport, there is an additional charge o
anzhelika [568]

Answer:

60 miles

Step-by-step explanation:

Let

x ----> the number of miles  

we know that

The number of miles multiplied by $0.60 per mile plus $2 plus the charge of $5.50 for tolls (because you are travelling from the airport)  must be equal to  $43.50

so

The linear equation that represent this problem is

0.60x+2+5.50=43.50

Solve for x

Combine like terms left side

0.60x+7.50=43.50

subtract 7.50 both sides

0.60x=43.50-7.50

0.60x=36

divide by 0.60 both sides

x=60\ miles

5 0
3 years ago
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