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3 years ago

PLEASE HELP I'M STUCK ;-;

Mathematics

2 answers:

Tems11 [23]3 years ago

6 0

-4.2-6y+3.6........whaja

QveST [7]3 years ago

5 0

Answer:

the distributive property is supposed to simplify your equation

Step-by-step explanation:

-4.2 - 6y + 3.6

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Solving systems of equations has been used consistently throughout this course in order to shed light on all kinds of different

Margarita [4]

Answer:

Types of problems that require solving a system of linear equations are:

Calculation of mileage rate

Calculations of ages of children born to a family

Calculation of income over a range of period.

Step-by-step explanation:

Solving a system of linear equations have many real life applications. Many real life problems can be used to set up a system of linear equations.

The following are the steps:

Understand the problem

Break the problem down into parts and represent each part with unknown variables such as: X1, X2, X3,...

Combine the unknown variables mathematically, from the statements of the problem(That is, 2X1 + X2 - 6X3, X1 + 2X2 + 4X3,....)

The results of the solved linear equation system (after solving) will give the solution to the problem. The solutions to the real life problems can be learned by the nature, analysis, and relationship of the solutions of the system of the formed linear equation

3 0

3 years ago

Choose all the equations that have m =5 as the solution

tatuchka [14]

Answer:

A and E

Step-by-step explanation:

Plug 5 in for m in every equation, and see if the math works.

$m-1=4\\5-1=4\\\\$

A - works

$m+4=20\\5+4=9$

B - does not work

$m-3=8\\5-3=2$

C - does not work

$22+m=25\\22+5=27$

D - does not work

$12=m+7\\12=5+7$

E - works

4 0

3 years ago

Read 2 more answers

find the circumference of the circle. d=23 in. a)144.44 in b)1661.06 in c)36.11 in d)72.22 in e)415.27 in

snow_lady [41]

Circumference of a circle = $\pi$ (diameter)

Diameter = 23 in.

Plug in the diameter = 23 in in the formula of circumference given above

Circumference of a circle = $\pi$ (23)

Circumference of a circle = 23 $\pi$

$\pi$ = 3.14

Circumference of a circle = 23 (3.14)

Circumference of a circle = 72.22 in

Option D is the answer

4 0

4 years ago

Read 2 more answers

I need help is due today!!!:Cool tees is having a back to school sale where all t-shirts are discounted by 15%. Joshua wants to

Softa [21]

Answer:

$64.5745

Step-by-step explanation:

You had to do this:

9.99+11.99+11.99+21.00+21.00=75.97

x = 85

75.97 100 85*75.97=6457.45

100x=6457.45

6457.45/100= 64.5745

8 0

3 years ago

NO LINKS!! Use the method of substitution to solve the system. (If there's no solution, enter no solution). Part 11z

Roman55 [17]

Answer:

$(x,y)=\left(\; \boxed{-1,-8} \; \right)\quad \textsf{(smaller $x$-value)}$

$(x,y)=\left(\; \boxed{5,16} \; \right)\quad \textsf{(larger $x$-value)}$

Step-by-step explanation:

Given system of equations:

$\begin{cases}y=x^2-9\\y=4x-4\end{cases}$

To solve by the method of substitution, substitute the first equation into the second equation and rearrange so that the equation equals zero:

$\begin{aligned}x^2-9&=4x-4\\x^2-4x-9&=-4\\x^2-4x-5&=0\end{aligned}$