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tekilochka [14]
3 years ago
5

There are 10 animals in the field. some are buffalo and some are ducks there are 34 legs in all. how many of each animal are in

the field?
Mathematics
1 answer:
hoa [83]3 years ago
5 0

Answer:

7 buffalos and 3 ducks

Step-by-step explanation:

create a system of equations:

4 y + 2 x = 34

y + x = 10

* y is for buffaos and x is for ducks

solve the equation:

y=10-x

4(10-x)+2x=34

x=3

y=10-3

y=7

7 buffalos and 3 ducks

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Tracy deposited $59 into a bank account that earned 3.5% simple interest each year.
AnnyKZ [126]

Answer:

Step-by-step explanation:

1) Tracy:

  P =$ 59 ;  r =3.5% ; T = 12 years

SI = PrT/100

      = 59 * 3.5 * 12 /100

      = $24.78

Amount Tracy that will be after 12 years in her account   = $ 59 +$24.78

              = $83.78

6 0
3 years ago
Need help <br> please solve<br><br> 2 log39
Alexeev081 [22]
You just need a calculator.
The answer is 3.1821

Source: A caluculator
4 0
3 years ago
6. What is the greatest common factor of the following expression? *<br> 15y3 – 40y
Nady [450]

Answer:

I'm not sure what 15y3 is, but I'll take a guess.

If the only numbers are 15, 3, and -40, then the greatest common factor is 1.

If the only numbers are 15 and 3, then it's three.

If the only numbers are 15 and -40, it would be 5.

5 0
3 years ago
quadrilateral paid is a rectangle whose diagonals have the endpoints p(-3, -2)i(4, -7) and a(4, -2)d(-3, -7). find the diagonals
julia-pushkina [17]

Answer:

The intersection point of diagonals is (0.5,-4.5).

Step-by-step explanation:

The end points of first diagonal are p(-3, -2) and i(4, -7).

The end points of second diagonal are a(4, -2) and d(-3, -7).

If a line passing through two points, then the equation of line is

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

The equation of first diagonal is

y-(-2)=\frac{-7-(-2)}{4-(-3)}(x-(-3))

y+2=\frac{-5}{7}(x+3)

7y+14=-5(x+3)

7y+14=-5x-15

5x+7y=-29                         .... (1)

The equation of second diagonal is

y-(-2)=\frac{-7-(-2)}{-3-4}(x-4)

y+2=\frac{-5}{-7}(x-4)

7y+14=5(x-4)

7y+14=5x-20

5x-7y=34                         .... (2)

Add equation (1) and (2),

10x=5

x=0.5

Put this value in (1).

5(0.5)+7y=-29

y=-4.5

The intersection point of diagonals is (0.5,-4.5).

3 0
3 years ago
Find the probability that a randomly selected x-value from the distribution is in the given interval.
Ganezh [65]

Answer:

What type of number is 25{,}74725,74725, comma, 747?

Choose all answers that apply:

Step-by-step explanation:

7 0
3 years ago
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