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2 years ago

12

Please help me with this question I’m so confused

2 answers:

Arisa [49]2 years ago

6 0

Answer:

4.75

Step-by-step explanation:

i hope this is helpful to you.

zavuch27 [327]2 years ago

4 0

$s = ut + \frac{1}{2} a {t}^{2} \\ s = 10( \frac{1}{2} ) + \frac{1}{2} ( - 2) {( \frac{1}{2}) }^{2} \\ s = 10( \frac{1}{2} ) + \frac{1}{2} ( - 2)( \frac{1}{4} ) \\ s = 5 + ( - 1)( \frac{1}{4} ) \\ s = 5 + ( - \frac{1}{4} ) \\ s = 5 - \frac{1}{4} \\ s = \frac{20}{4} - \frac{1}{4} \\ s = \frac{19}{4}$

Hope it helps

Please give brainliest

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HELP ASAP PLEASE :)))))

Alex787 [66]

Answer:

i think the answer is 0,0

5 0

3 years ago

Solve 4 + 3n ≥ 1 for n.

ludmilkaskok [199]

Hi,

4 + 3n ≥ 1

3n ≥ - 3

n ≥ -3/3

n ≥ - 1

4 0

3 years ago

Help me with this plz..........

kodGreya [7K]

Answer:

-90

Step-by-step explanation:

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4 years ago

The water from a fire hose follows a path described by y equals 2.0 plus 0.9 x minus 0.10 x squared (units are in meters). If

Alecsey [184]

Answer:

The resultant velocity is 12.21 m/s.

Step-by-step explanation:

We are given that the water from a fire hose follows a path described by y equals 2.0 plus 0.9 x minus 0.10 x squared (units are in meters).

Also, v Subscript x is constant at 10.0 m/s.

The water from a fire hose follows a path described by the following equation below;

$y=2.0 + 0.9x-0.10x^{2}$

The velocity of the $x$ component is constant at = $v_x=10.0 \text{ m/s}$

and the point at which resultant velocity has to be calculated is (9.0,2.0).

Let the velocity of x and y component be represented as;

$v_x=\frac{dx}{dt} \text{ and } v_y=\frac{dy}{dt}$

Now, differentiating the above equation with respect to t, we get;

$y=2.0 + 0.9x-0.10x^{2}$

$\frac{dy}{dt} =0 + 0.9\frac{dx}{dt} -(0.10\times 2)\frac{dx}{dt}$

$\frac{dy}{dt} = 0.9\frac{dx}{dt} -0.2\frac{dx}{dt}$

$v_y = 0.9v_x -0.2v_x$

$v_y = 0.7v_x$

Now, putting $v_x=10.0 \text{ m/s}$ in the above equation;

$v_y = 0.7 \times 10.0$ = 7 m/s

Now, the resultant velocity is given by = $v=\sqrt{v_x^{2}+v_y^{2} }$

$v=\sqrt{10^{2}+7^{2} }$

= $\sqrt{149}$ = 12.21 m/s

5 0

3 years ago

The ratio of the lengths of the radii of two spheres is 2:5. What is the ratio of the volumes?

Lana71 [14]

Answer:

8:125

Step-by-step explanation:

The ratio of the lengths would be the scale factor

The ratio of the volumes is the scale factor cubed

2^3 : 5^3

8:125

8 0

3 years ago