1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Diano4ka-milaya [45]
3 years ago
5

Help me with my math pls :)

Mathematics
1 answer:
MrMuchimi3 years ago
4 0

Answer:

4(x-8)=-32+4: x=1

2(x-2)=-3-2x: x1/4

3+5x=5(x+2)-7: x=0

8x+38=-3(-6-4x) x=5

Step-by-step explanation:

4(x-8)=-32+4

add subtract the numbers

-32+4=-28

4(x-8)=-28

Divide both sides by 4

\frac{4(x-8)}{4}=\frac{-28}{4}

Simplify

x-8=-7

Add 8 on both sides

x+8-8=-7+8

Simplify

x=1

2(x-2)=-3-2x

  • Expand 2(x-2)
  • apply distributive law: a(b-c)=ab-ac

a=2 b=x c=2

=2x-2·2

  • multiply the numbers

2·2=4

=2x-4

2x-4=-3x-2

  • Add 4 to both sides

2x-4+4=-3-2x+4

  • simplify

2x=-2x+1

  • Add 2x on both sides

2x+2x=2x+1+2x

  • Simplify

4x=1

  • Divide by 4 on both sides

4x÷4=1÷4

  • Simplify

x=1/4

3+5x=5(x+2)-7

<em> We move all terms to the left: </em>

<em> 3+5x-(5(x+2)-7)=0 </em>

<em> We calculate terms in parentheses: -(5(x+2)-7), so: </em>

<em> 5(x+2)-7 </em>

<em> We multiply parentheses </em>

<em>5x+10-7 </em>

<em> We add all the numbers together, and all the variables </em>

<em> 5x+3 </em>

<em> Back to the equation: </em>

<em> -(5x+3) </em>

<em>  We get rid of parentheses </em>

<em> 5x-5x-3+3=0 </em>

<em> We add all the numbers together, and all the variables </em>

<em> =0 </em>

<em> x=0/1 </em>

<em> x=0</em>

8x+38=-3(-6-4x)

Simplifying

8x + 38 = -3(-6 + -4x)

Reorder the terms:

38 + 8x = -3(-6 + -4x)

38 + 8x = (-6 * -3 + -4x * -3)

38 + 8x = (18 + 12x)

Solving

38 + 8x = 18 + 12x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-12x' to each side of the equation.

38 + 8x + -12x = 18 + 12x + -12x

Combine like terms: 8x + -12x = -4x

38 + -4x = 18 + 12x + -12x

Combine like terms: 12x + -12x = 0

38 + -4x = 18 + 0

38 + -4x = 18  

Add '-38' to each side of the equation.

38 + -38 + -4x = 18 + -38

Combine like terms: 38 + -38 = 0

0 + -4x = 18 + -38

-4x = 18 + -38

Combine like terms: 18 + -38 = -20

-4x = -20

Divide each side by '-4'.

x = 5

Simplifying

x = 5

Hope this helps

You might be interested in
What times what equals 12 but when you add those numbers together it equals positive 2
Tresset [83]

Hello from MrBillDoesMath!

Answer:

1 - i sqrt(11) , 1 + i sqrt(11)  

Discussion:

Translating the Question into mathematical symbols:

x * y = 12     (*)

x + y = 2      (**)

From (**),  y  = 2 - x. Substitute this value in (*)

x * y = x * (2-x) = 12     =>

2x - x^2 = 12               => add x^2, subtract 2x from both sides

0 =  x^2  -2x + 12    

Solving using the quadratic formula gives

x = 1 - i sqrt(11)

and

y = 1 + i sqrt(11)

Thank you,

MrB

3 0
3 years ago
Solve -9 2/7 - (10 3/7)
Setler [38]

Answer:

add the whole numbers. -9+10=1

1 2-3/7

remove one digit from the whole number:. 1-1=0

add the denominator to 2=7+2=9

:. 9-3/7=6/7

answer=6/7

3 0
3 years ago
Heidi has $4.55. She needs to buy bolts at the hardware store. Bolts cost $0.13 each.
MrRa [10]

Divide 4.55 by 0.13 (the cost of each bolt) to find out how many bolts Heidi can buy!

$4.55 ÷ $0.13 = 35

Heidi can buy 35 bolts with $4.55 !1

3 0
3 years ago
Read 2 more answers
What is an equation of the line that passes through the point (8,-4) and is parallel to the line x-4y=12?
lesantik [10]

Answer:

x - 4y =12 / -x

-4y = 12 - x // -4

y = -3  1/4 *x

a = 1/4

f(8) = -4

-4 = a*8 + b

-4 = 2 + b / -2

b = -6

so

y = 1/4 *a -6

7 0
3 years ago
Find the hypotenuse of a triangle that has a 13 cm leg and a height of 7 cm.
fredd [130]
Hello, it would be the sqrt of 218, which rounded to the hundredths is around 14.77 cm. hope this helps!
8 0
3 years ago
Other questions:
  • Which could be the name of a plane? <br><br> A.MN<br><br> B.m<br><br> C.AB<br><br> D.A
    6·1 answer
  • Where did that underlined x go.
    15·1 answer
  • Eds- RELEASED FORM25 Kim made soup which contains 75 total ounces of beanssoup has two kinds of beans, black and redThere many o
    10·1 answer
  • Sun Valley and San Jose are 105 km from each other. How far apart would the cities be on a map that has a scale of 1 cm : 15 km?
    5·1 answer
  • Evaluate the function below for x=2 f(x)=x^4+6x^3+3
    12·1 answer
  • 1/4 N + 15<br> What is the variable?
    9·2 answers
  • Now there is a door whose height is more than its width by 6 chi 8 cun. The distance between the [opposite] corners is 1 zhang.
    7·1 answer
  • Can someone please help me with this math question?
    15·1 answer
  • Please help this is due soon
    10·1 answer
  • LOL ITS ME AGAIN STOP SCROLLING N HELP MEEE PLS. ALSO DONT MIND DIRTY SCREEN
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!