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3 years ago

Help Me Please!!!!!!!!!!!

Mathematics

1 answer:

DaniilM [7]3 years ago

6 0

Answer:

Have a good day

Step-by-step explanation: and so have a good day

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The expression in the figure below represent the measures of two angle.Find the value of x . f || g . The diagram is not to scal

Andrej [43]

I hope this helps you

2x and 8x+40 complementary angles

their sum is 180

2x+8x+40=180

10x=140

x=14

5 0

3 years ago

Solve for y.<br> y+9=7<br><br> Any help

liberstina [14]

Answer:

-2

Step-by-step explanation:

7-9=-2 hope this helps

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3 years ago

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45.15 ÷ 21 what is the answer

Nastasia [14]

45.15 divided by 21 is 2.15. Hope it helps!!

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3 years ago

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What is the solution to the system of equations?

MatroZZZ [7]

x is -4 and y is 15

$3x + y = 3 \\ 2x + y = 7 \\ \\ 3x + y = 3 \\ - 2x - y = - 7$

$x = - 4 \\ \\ y = 12 + 3 \\ y =15$

good luck

5 0

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