The triangle and rectangle have the same perimeter.find the value of x.

How can the mixed number 3 2/7 be written as a fraction greater than 1

MaRussiya [10]

Answer:

Step-by-step explanation:

3 0

3 years ago

Help pls I’ll give 50 points ! If right math ppl

Georgia [21]

$f(x)=-3x$

Substitute x = 5 in the equation.

$f(5)=-3(5)\\f(5)=-15$

Therefore, the answer is -15 or last choice when x = 5.

3 0

2 years ago

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Please help me answer this question

avanturin [10]

By direct substitution and simplification, the trigonometric function z = cos (2 · x + 3 · y) represents a solution of the partial differential equation $\frac{\partial^{2} t}{\partial x^{2}} - \frac{\partial^{2} t}{\partial y^{2}} = 5\cdot z$ .

<h3>How to analyze a differential equation</h3>

Differential equations are expressions that involve derivatives. In this question we must prove that a given expression is a solution of a differential equation, that is, substituting the variables and see if the equivalence is conserved.

If we know that $z = \cos (2\cdot x + 3\cdot y)$ and $\frac{\partial^{2} t}{\partial x^{2}} - \frac{\partial^{2} t}{\partial y^{2}} = 5\cdot z$ , then we conclude that:

$\frac{\partial t}{\partial x} = -2\cdot \sin (2\cdot x + 3\cdot y)$

$\frac{\partial^{2} t}{\partial x^{2}} = - 4 \cdot \cos (2\cdot x + 3\cdot y)$

$\frac{\partial t}{\partial y} = - 3 \cdot \sin (2\cdot x + 3\cdot y)$

$\frac{\partial^{2} t}{\partial y^{2}} = - 9 \cdot \cos (2\cdot x + 3\cdot y)$

$- 4\cdot \cos (2\cdot x + 3\cdot y) + 9\cdot \cos (2\cdot x + 3\cdot y) = 5 \cdot \cos (2\cdot x + 3\cdot y) = 5\cdot z$

By direct substitution and simplification, the trigonometric function z = cos (2 · x + 3 · y) represents a solution of the partial differential equation $\frac{\partial^{2} t}{\partial x^{2}} - \frac{\partial^{2} t}{\partial y^{2}} = 5\cdot z$ .

To learn more on differential equations: brainly.com/question/14620493

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3 0

2 years ago

- Simplify the expression: -21 - (38)

Nutka1998 [239]

Step-by-step explanation:

-21 - (38)

-21-38

-(21+38)

-59

6 0

3 years ago

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Valerie is filling her new fish tank with water. The tank measures 36 inches by 12 inches by 20 inches. She has a bucket that sh

nalin [4]

Answer:

20.

Step-by-step explanation:

Your calculation is correct but the number of times she has to fill or partially fill is 19 + 1 = 20. The last fill is a partial one of 0.2 of the volume of the bucket)

8 0

2 years ago