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Alenkinab [10]
3 years ago
9

WHAT IS THE LENGTH OF AC? Help me!!!

Mathematics
1 answer:
nasty-shy [4]3 years ago
7 0
Given triangles are similar, so we setup a proportion 

(140-x)/81 = x/9

solving gives x = 14
AC = 140-x = 140-14 = 126
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33.33333 rounded to the nearest tenth
Airida [17]

Answer:

33.3

Step-by-step explanation:

since it's 3 and not higher than 5 the value would be rounded down

8 0
2 years ago
8. An car can hold 8 1/4 gallons of fuel. It contains 4 5/6 gallons of fuel. How
Paul [167]

Answer:

3 5/12

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Write the given second order equation as its equivalent system of first order equations
Lilit [14]

The second-order equation as its equivalent system of first-order equations is

\left[\begin{array}{ccc}u(1)\\\\v(1)\end{array}\right] = \left[\begin{array}{ccc}7.5\\\\9\end{array}\right]

An equivalent system that has the identical answer is known as an equivalent structure. Given a gadget of two equations, we can produce an equal system by way of replacing one equation by means of the sum of the 2 equations, or by way of changing an equation by means of a couple of of itself.

Systems of linear equations are equivalent if and handiest in the event that they have an equal set of solutions. In other phrases, two systems are equal if and only if each answer of one in all of them is likewise a solution of the opposite.

In the structures sciences, a machine equivalent system is the conduct of a parameter or thing of a machine in a way just like a parameter or component of a distinctive system. Similarity means that mathematically the parameters and additives will be indistinguishable from each different.

Taking v = u, we have:

u" + 4u' + 6u = 4sin(3t)

--> v' + 4v + 6u = 4sin(3t)

So the system of equations is:

u' = 0u + 1v

v' = -6u - 4v + 4sin(3t)

So we can write it as:

u(1) = 7.5

v(1) = u'(1) = 9

So the initial condition matrix is:

\left[\begin{array}{ccc}u(1)\\\\v(1)\end{array}\right] = \left[\begin{array}{ccc}7.5\\\\9\end{array}\right]

Learn  more about the equivalent system here brainly.com/question/14878855

#SPJ4

3 0
2 years ago
When would it be more useful to represent a proportional relationship with a graph rather than an equation
kolezko [41]
It would be <span>more useful to represent a proportional relationship with a graph rather than an equation when you need to compare two things visually. The graph gives you a clearer idea than am equation. I hope that this is the answer that you were looking for and it has actually come to your great help.</span>
5 0
4 years ago
Read 2 more answers
What is the first of four consecutive numbers if their sum is 810?
Pachacha [2.7K]

Let x be the first of the four consecutive numbers.

Then x+1 is the second,

and x+2 is the third,

and x+3 is the fourth.

If their sum is 810, then

   x + x+1 + x+2 + x+3 = 810

If you solve that equation for x, you'll have the answer to your question.

3 0
3 years ago
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