2 1/2 ÷ 4=????? please help me

Mathematics

2 answers:

wariber [46]4 years ago

6 0

Answer: .625

Step-by-step explanation:

convert 0.625 to a fraction.

Multiply 0.625/1 by 1000/1000 to get 625/1000.

Reducing we get 5/8.

Umnica [9.8K]4 years ago

4 0

Answer:

.625

Step-by-step explanation:

first i turned 2 1/2 into .5 then i divided.

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A cylinder shaped water tank has a radius of 5 m and a height of 10 m.

allsm [11]

Data:
v (volume) = ?
h (height) = 10 m
r (radius) = 5 m
Adopting: $\pi \approx 3.14$

Formula:
$V = h* \pi *r^2$

Solving:
$V = h* \pi *r^2$
$V = 10*3.14*5^2$
$V = 10*3.14*25$
$\boxed{V=785\:m^3}}\end{array}$

If:

785 m³ → 100%
y m³ → 75%

Solving: <span>Rule of three (directly proportional)
</span> $\frac{785}{y} = \frac{100}{75}$
multiply cross
$100*y = 785*75$
$100y = 58875$
$y = \frac{58875}{100}$
$\boxed{\boxed{y = 588.75\:m^3}}\end{array}}\qquad\quad\checkmark$

Answer:
<span>The volume of water that the tank contains when it is 75% full is 588.75 m³</span>

5 0

3 years ago

Which one of the following is an arithmetic senquence?

PtichkaEL [24]

Answer:

D. -2, 1, 4, 7, 10

Step-by-step explanation:

An arithmetic sequence has a common difference between terms. We can see if the offered choices have that characteristic:

A. .5 -.35 = .15; .85 -.5 = .35 ≠ .15 . . . . not an arithmetic sequence

B. 0 -5 = -5; -1 -0 = -1 ≠ -5 . . . . not an arithmetic sequence

C. 3 -2 = 1; 5 -3 = 2 ≠ 1 . . . . not an arithmetic sequence

D. 1 -(-2) = 3; 4 -1 = 3; 7 -4 = 3; 10 -7 = 3 . . . . common difference of 3, an arithmetic sequence