3 years ago

Find the perimeter if a = 1 b = 4 c = 6 d = 5

Mathematics

2 answers:

umka21 [38]3 years ago

5 0

It is 16 units long

g100num [7]3 years ago

4 0

Answer:16

Step-by-step explanation:

Add each side togeather

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3x+2y=23<br> 1/2x-4=y<br><br> What should I do for this one...? I dont really understand

Hitman42 [59]

Since you have y alone on one side of the equation......

Use substitution and plug in 1/2x-4 for y in the other equation.

$3x+2(1/2x-4)=23\\$

Distribute

$3x+x-8=23$

Combine like terms

$4x-8=23$

Add 8 to both sides

$4x=31$

Divide by 4

and $x=31/4$

Plug this value in for x

$31/4*1/2-4=y$

Simplify

$31/8-4=y$

Multiply everything by 8 and simplify

$31-32=8y\\-1=8y$

Divide.....

$y=-1/8$

Your answers are:

$y=-1/8\\x=31/4$

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3 years ago

(x-5)2/5=4 Solve the equation.

Naddika [18.5K]

Answer: x=15

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Помогите математика !!!!!!

ohaa [14]

Answer:

sorry say nice its out of understand

4 0

3 years ago

Four less than a number is more than 15.<br> PLS HELP ME I WILL GIVE 15 POINTSSS

dimulka [17.4K]

Answer: x - 4 > 15

Step-by-step explanation:

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7 0

3 years ago

If a is three times b, b is twice c, and c is four times d, what is the value of a*c/b*d

dsp73

Answer:

Step-by-step explanation:

a=3b

b=2c

c=4d

a*c/b*d = (3(2(4d)))*(4d)/(2(4d))*d

= 96d^2/8d^2

= 12

7 0

3 years ago