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Marizza181 [45]
3 years ago
12

Please help me immediately ​

Mathematics
2 answers:
katen-ka-za [31]3 years ago
3 0

Answer:

112 m³

Step-by-step explanation:

Let's calculate first the voulume of the tank

the volume of thi tank is given by :

  • V = l*w*h
  • l is the length
  • w is the width
  • h is the height

so the volume is :

  • V = 4*12*3.5
  • V=168 m³

Multiply by 2/3 to get the volume of the water

  • V' = 168*(2/3)
  • V' = 112 m³
padilas [110]3 years ago
3 0

Answer:

112 m^3

Step-by-step explanation:

V = l x w x h

V = 4 x 12 x 3.5

V = 168 m^3

V = 168 x (2/3)

V = 112 m^3

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meriva

Answer:

sec~y=\frac{q}{r}

Step-by-step explanation:

tan ~y=\frac{7}{r} \\\\\frac{sin~y}{cos~y} =\frac{7}{r} \\\\sin~y=\frac{7}{r} cos~y\\sin ~y=\frac{7}{q} \\\frac{7}{q} =\frac{7}{r} cos~y\\sec~y=\frac{7}{r}  \times \frac{q}{7} =\frac{q}{r}

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3 years ago
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Fantom [35]

Answer:

\large\boxed{y=2(x+1)^2-3}

Step-by-step explanation:

The vertex form of an equation of a parabola:

y=a(x-h)^2+k

(h, k) - vertex

We have

y=2x^2+4x-1=2\left(x^2+2x-\dfrac{1}{2}\right)

We must use the formula: (a+b)^2=a^2+2ab+b^2\qquad(*)

2\left(x^2+2(x)(1)-\dfrac{1}{2}\right)=2\bigg(\underbrace{x^2+2(x)(1)+1^2}_{(*)}-1^2-\dfrac{1}{2}\bigg)\\\\=2\left((x+1)^2-1-\dfrac{1}{2}\right)=2\left((x+1)^2-\dfrac{3}{2}\right)

Use the distributive formula a(b + c) = ab + ac

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5 0
3 years ago
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\frac{12}{40}
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Answer:

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Step-by-step explanation:

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Any one of the four digits (1,5,6, or 8).

Now, <em><u>How many digits (from 1,5,6 and 8) can be placed as the 2nd digit of the number we want?</u></em>

Any one of the THREE digits (since repetition is not allowed, we disregard the initial digit).

Thus the number of two-digit positive integers is 4 * 3 = 12

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