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3 years ago

Find the measure of b.

Mathematics

1 answer:

Lyrx [107]3 years ago

6 0

Answer:

105

Step-by-step explanation:

55+50+x=180

x=75 this is the other inside angle. to find b, you need to take 75 and subtract it from 180. this is because a straight line is equal to 180 degrees

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-3m < 15<br> PLEASE HELP

lbvjy [14]

Answer:

m > -5

Step-by-step explanation:

Divide your inequality by the coefficient of m, which is -3. Doing that requires you reverse the comparison symbol:

(-3m)/(-3) > (15)/(-3)

m > -5

_____

The comparison symbol is reversed whenever an inequality is multiplie or divided by a negative number. You might be able to see why when you look at the relation between a couple of integers:

-2 < -1

2 > 1 . . . . . . multiply the above by -1

Multiplying by a negative number effectively reflects the comparison across the center of the number line. As we know from looking in a mirror; reflection reverses left and right, so numbers that were farther to the right (more positive) are now farther to the left (more negative).

6 0

3 years ago

The perimeter of a rectangle is 42 centimeters. The length of the rectangle can be represented by (x+4) and its width can be rep

Lyrx [107]

Answer:

2(x+4) + 2(2x-7) = 42 ( If this is wrong simplify this)

Step-by-step explanation:

The formula for perimeter is (2 x length) + (2 x width), so our equation would be 2(x+4) + 2(2x-7) = 42

6 0

4 years ago

Read 2 more answers

What is the domain of the relation?<br><br> Express your answer using inequalities.

son4ous [18]

Answer:

-6<x<0

- -

Step-by-step explanation:

make them less than or equal to signs, I don't know how to do that on a computer, I hope I am correct

point one on the left is -6, point 2 on the right is 0 (in terms of the x-axis, that's what domain is )

when there is arrows in the graph, the x/y is always in the middle.

Good luck! Hope I'm not late!

8 0

3 years ago

Read 2 more answers

Joseph earns $20 for every lawn he mows. Is the amount of money he earns proportional to the number of lawns he mows? What is th

vaieri [72.5K]

wouldnt the answer be 20

6 0

3 years ago

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