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Olenka [21]
3 years ago
10

8x+12=4(3+2x) Show your work please

Mathematics
2 answers:
marysya [2.9K]3 years ago
7 0

Answer:

8x + 12 = 12 + 8x

0 = 0

Step-by-step explanation:

Distribute then simplify

Licemer1 [7]3 years ago
7 0

Answer:

0x=0

Step-by-step explanation:

8x+12=12+8x

-12     -12

_____________

8x=8x+0

-8x    -8x

_____________

0x=0

0=0

Hope this helps :D

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The ratio of Alex's toy cars to Jim's is 8:3. How many toy cars do they have altogether, if Alex has 40 more cars than Jim?
aniked [119]

Answer:

88

A:J

8:3

a - 40 = j

8y - 40 = 3y

5y = 40

y = 8

8 *11 = 88

Step-by-step explanation:

Hope i helped!  have a nice day

5 0
2 years ago
Read 2 more answers
What does the degree of a polynomial mean?
serg [7]
__Award Brainliest if helped!

Layman : The number of the largest power

Say  x^{2} +x+3 , Degree is 2 (X^2) 
and if x^{3} + x^{2} +x+3 , the Degree is 3. 

Technical : Largest exponent of variable. 
5 0
3 years ago
Write 6(9+2k)= -3 in written form
Alchen [17]

Answer:

27k+3=0

Step-by-step explanation:

Write in standard form.

this way?

4 0
2 years ago
Kyle works at a donut​ factory, where a​ 10-oz cup of coffee costs 95¢​, a​ 14-oz cup costs​ $1.15, and a​ 20-oz cup costs​ $1.5
Fynjy0 [20]

Answer:

Kyle filled 4 10-oz cups, 6 14-oz cups, and 4 20-oz cups.

Step-by-step explanation:

Let 10-oz, 14-oz, and 20-oz coffees be represented by the variables <em>a, b</em>, and <em>c</em>, respectively.

Since a total of 14 cups of coffee was served:

a+b+c=14

A total of 204 ounces of coffee was served. Therefore:

10a+14b+20c=204

A total of $16.70 was collected. Hence:

0.95a+1.15b+1.5c=16.7

This yields a triple system of equations. In order to solve a triple system, we should isolate the system to only two variables first.

From the first equation, let's subtract <em>a</em> and <em>b</em> from both sides:

c=14-a-b

Substitute this into both the second and third equations:

10a+14b+20(14-a-b)=204

And:

0.95a+1.15b+1.5(14-a-b)=16.7

In this way, we've successfully created a system of two equations, which can be more easily solved. Distribute:

For the Second Equation:

\displaystyle \begin{aligned} 10a+14b+280-20a-20b&=204\\ -10a-6b&=-76\\5a+3b&=38\end{aligned}

And for the Third:

\displaystyle \begin{aligned} 0.95a+1.15b+21-1.5a-1.5b&=16.7\\ -0.55a-0.35b&=-4.3\end{aligned}

We can solve this using substitution. From the second equation, isolate <em>a: </em>

<em />\displaystyle a=\frac{1}{5}(38-3b)=7.6-0.6b<em />

Substitute into the third:

-0.55(7.6-0.6b)-0.35b=-4.3

Distribute and simplify:

-4.18+0.33b-0.35b=-4.3

Therefore:

-0.02b=-0.12\Rightarrow b=6

Using the equation for <em>a: </em>

<em />a=7.6-0.6(6)=4<em />

<em />

And using the equation for <em>c: </em>

<em />c=14-(4)-(6)=14-10=4<em />

<em />

Therefore, Kyle filled 4 10-oz cups, 6 14-oz cups, and 4 20-oz cups.

7 0
2 years ago
The school store buys granola bars for $0.40 each and sells them for 0.65 .What is the percent markup?
adell [148]

The percent markup is 62.5%

The work is provided in the image attached.

4 0
3 years ago
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