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3 years ago

Solve (2+2)+(4-1). ASAP, it's test

Mathematics

2 answers:

Ivahew [28]3 years ago

5 0

¯\_(ツ)_/¯

4+3

the answer is 7.

Ostrovityanka [42]3 years ago

4 0

Answer:

$\huge \boxed{\displaystyle 7}$

Step-by-step explanation:

we would like to simplify the following expression:

$\displaystyle (2 + 2) + (4 - 1)$

in order to do we can consider the order of PEMDAS which is the abbreviation of Parentheses, Exponent, Multiplication,or Division, Addition or substraction

since Parentheses come first we'll simplify parentheses:

$\displaystyle 4 + 3$

simplify addition:

$\displaystyle 7$

and we are done!

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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

John purchase a case of lemonade and five bags of crackers the case of lemonade cost $5.25 if his total is $11.75 right and solv

galina1969 [7]

Answer:

11.75 = 5.25 + x

x = 6.50

Step-by-step explanation:

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3 years ago

What does isomorphic mean in leanera algebra?

defon

Two vector spaces V and W are said to be isomorphic if there exists an invertible linear transformation (aka an isomorphism) T from V to W.

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3 years ago

How to solve this problem

zepelin [54]

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3 years ago

Select all the correct equations.

Naya [18.7K]

Answer:

You did not post the options, but i will try to answer this in a general way.

Because we have two solutions, i know that we are talking about quadratic equations, of the form of:

0 = a*x^2 + b*x + c.

There are two easy ways to see if the solutions of this equation are real or not.

1) look at the graph, if the graph touches the x-axis, then we have real solutions (if the graph does not touch the x-axis, we have complex solutions).

2) look at the determinant.

The determinant of a quadratic equation is:

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3 0

4 years ago

Solve (2+2)+(4-1). ASAP, it's test​

Solve (2+2)+(4-1). ASAP, it's test