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Alex
3 years ago
13

4(10x+2)-40x Each step of the equation

Mathematics
2 answers:
noname [10]3 years ago
8 0

Answer:

\displaystyle =8

Step-by-step explanation:

<em>Distributive property: </em>

<em>        ↓</em>

<em>  A(B+C)=AB+AC</em>

<em />

<em>A=4,  B=10x, and C=2</em>

<em />

<em>4*10x+4*2</em>

<em />

<em>Simplify.</em>

<em />

<em>40x+4*2</em>

<em />

<em>4*2=8</em>

<em />

<em>40x+8</em>

<em />

<em>40x+8-40x</em>

<em />

<em>Group like terms</em>

<em />

<em>40x-40x+8</em>

<em />

<em>Add numbers from left to right.</em>

<em />

<em>40x-40x=0</em>

<em />

<em>\displaystyle 8, is the correct answer.</em>

<em />

<em>Hope this helps!</em>

<em />

Ilya [14]3 years ago
7 0

Answer:

8

Step-by-step explanation:

We cannot solve this, since this is an expression, not an equation.

Lets simplify the expression

4(10x+2)-40x

Distribute the 4

40x +8 - 40x

8

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Help please! ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!
solmaris [256]

Answer:

x= 1/2

and y=3

Step-by-step explanation:

Let's solve your system by substitution.

y=10x−2;2x+y=4

Step: Solvey=10x−2for y:

y=10x−2

Step: Substitute10x−2foryin2x+y=4:

2x+y=4

2x+10x−2=4

12x−2=4(Simplify both sides of the equation)

12x−2+2=4+2(Add 2 to both sides)

12x=6

12x

12

=

6

12

(Divide both sides by 12)

x=

1

2

Step: Substitute

1

2

forxiny=10x−2:

y=10x−2

y=10(

1

2

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y=3(Simplify both sides of the equation)

Answer:

x= 1 /2

and y

3 0
3 years ago
Hi, I am new to this website :) I'm currently taking an online trig class on De Moivre's theorem and I don't understand it at al
Vladimir [108]
De Moivre's theorem uses this general formula z = r(cos α + i<span> sin α) that is where we can have the form a + bi. If the given is raised to a certain number, then the r is raised to the same number while the angles are being multiplied by that number.

For 1) </span>[3cos(27))+isin(27)]^5 we first apply the concept I mentioned above where it becomes

[3^5cos(27*5))+isin(27*5)] and then after simplifying we get, [243 (cos (135) + isin (135))] 

it is then further simplified to 243 (-1/ √2) + 243i (1/√2) = -243/√2 + 243/<span>√2 i
and that is the answer.

For 2) </span>[2(cos(40))+isin(40)]^6, we apply the same steps in 1)

[2^6(cos(40*6))+isin(40*6)],

[64(cos(240))+isin(240)] = 64 (-1/2) + 64i (-√3 /2)

And the answer is -32 -32 √3 i

Summary:
1) -243/√2 + 243/√2 i
2)-32 -32 √3 i

7 0
3 years ago
There are 5,280 feet in one mile . How many inches are in 3.2 miles
Paraphin [41]
202,752 inches are in 3.2 miles.
7 0
4 years ago
Read 2 more answers
G(n) = 4n +4<br> h(n) = n +5<br> Find (g- h) (9)
Vinil7 [7]

Answer:

3n-1

Step-by-step explanation:

(4n+4) - (n+5)

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3n-1 should be it

5 0
4 years ago
The difference between thirteen and the product of four and a number? in algrebrain expression
dangina [55]
I think it is 4 x y - 13
8 0
3 years ago
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