3 years ago

3 1/2x + 215 = 495 Why is 3 1/2 multiplied by x in the equation

Mathematics

1 answer:

nlexa [21]3 years ago

5 0

3 1/2 x is multiplied by x In the equation because it is the coefficient, the number being multiplied by the variable

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An oil tank has to be drained for maintenance. The tank is shaped like a cylinder that is 4 ft long with a diameter of 2.2 ft. S

gavmur [86]

Answer:

$8\:\mathrm{minutes}$

Step-by-step explanation:

The volume of a cylinder is given as:

$r^2\cdot\pi\cdot h$

Since the diameter is $2.2$ , the radius is $\frac{2.2}{2}=1.1$ .

Therefore, the volume of this cylinder is:

$1.1^2\cdot 3.14\cdot 4=15.1976\:\mathrm{ft^3}$ , using $\pi=3.14$ as requested in the problem.

Since the tank is emptied at a constant rate of $1.5\:\mathrm{ft^3\:per\:minute}$ , it will take

$\frac{15.1976}{1.5}=7.5988=\fbox{$8\:\mathrm{minutes}$}$ to empty the tank.

8 0

2 years ago

X/7=3/2 solve equation, check solution<br>

nexus9112 [7]

Answer:

Step-by-step explanation:

X/7=3/2 multiply by : 5

x = 21/2

6 0

2 years ago

20 points. Help. No links. Ty :)

Andrej [43]

$\huge\boxed{Answer\hookleftarrow}$

334

$\huge\boxed{Explanation\hookleftarrow}$

10 × 4 × 7 = 280

3 × 3 × 6 = 54

280 + 54 = 334

$\huge\boxed{Mark -Brainliest\hookleftarrow}$

6 0

2 years ago

Solve the simultaneous equations

nexus9112 [7]

Answer:

Step-by-step explanation:

2x + 3y = 2

x = 2 - 3y /2

x + y = 0

substitute the value of x

$\frac{2 \\- 3y}{2}$ + y = 0

2 - 3y + 2y = 0

2 = y

again,substitute the value of y

x = 2 - 3y / 2

=2 - 3*2 / 2

=2 - 6 / 2

=-2

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2 years ago

A cube has a base area (B) of 49 in?. what is the volume?

timofeeve [1]

Answer:

$Base Area , B = 49\\side,a = \sqrt{49 } = 7\\Volume, V = B* a = 49 * 7 = 343$

5 0

2 years ago