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Lerok [7]
3 years ago
13

Help with this question plsssss

Mathematics
1 answer:
Finger [1]3 years ago
8 0
64 cubic feet is the answer you’re lookin for!

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5x+2 =42 \\\\

minus 2 each side.

5x=40

then divide

x=8

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What point is located on the x-axis<br><br> Pls help
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Answer:

Point C is located on the x-axis.

Step-by-step explanation:

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Two children own two-way radios that have a maximum range of 3 miles. One leaves a certain point at 1:00 P.M., walking due north
Grace [21]

Answer:

The answer is 21 minutes

Step-by-step explanation:

We use the equation Xf = Xo + vt

1) At 1:00 PM, child one leaves the starting point heading north at a constant velocity of 6 mi/hr or .1 [mi/min] (divide by 60 to convert from [mi/hr] to [mi/min])

2) He walks for 15 minutes before kid 2 starts walking. In 15 minutes he is able to cover 1.5 [mi]

  • x_{1f1} =x_{o} +v_{1} t_{1} \\x_{1f1} =0+.1(15)\\x_{1f1} =1.5 [mi]

3) Now, child 2 starts walking and we know that when the range reaches 3 miles, they won´t be able to communicate. So the sum of the final position of child 1 and child 2 must be 3[mi]

  • Child 1 final position => x_{1f} = x_{1f1} +v_{1} t\\x_{1f} =1.5+v_{1} t
  • Child 2 final position => x_{2f} =0+v_{2} t

4) Sum the equations and equate to 3

  • x_{1f} +x_{2f} =3

5) Substitute the values we already know

  • 1.5+v_{1} t+v_{2}t=3\\ 1.5+.1t+.15t=3\\1.5+.25t=3\\t=\frac{3-1.5}{.25} \\t=6 [min]

6) in 15 + 6 minutes they will be 3miles apart

7) In 21 minutes they will still be able to communicate with one another.

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3 years ago
Quincy deposits $400 in a new bank account that earns 4 simple interest per year. What is the total amount in the account after
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Ÿū tj Yates tu hamase de Beas
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Margo borrows $600, agreeing to pay it back with 4% annual interest after 18 months. How much interest will she pay?
Nastasia [14]
To find the simple interest, we multiply 600 × 0.04 × 1.5 to get that:

The interest is: $36.00
3 0
3 years ago
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