X/-3+20=30 help me please

Answers

Answer 1
Answer:

if you're solving for x it's -30

steps: x/-3+20=30

first subtract 20 from both sides then you'll have

x/-3=10 then multiply both sides with -3

you should have x by itself and -30 on the other side

answer x=-30

Answer 2
Answer:

if you're solving for x it's -30


steps: x/-3+20=30


first subtract 20 from both sides then you'll have


x/-3=10 then multiply both sides with -3


you should have x by itself and -30 on the other side


answer x=-30



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What is the square root of 180x^9y^16 in simplest form?

Answers

\sqrt{180x ^{9y ^(16) } }

Apply radical  rule :

\sqrt[n]{ab} = \sqrt[n]{a} \sqrt[n]{b}

√(180) \sqrt{x ^{9y^(16) } }

Break  the number  to its primes : 180 : 2^2*3^2*5

√(2^2*3^2*5)

Apply radical  rule :

\sqrt[n]{ab} = \sqrt[n]{a} \sqrt[n]{b}

√(5) √(2^2) √(3^2)

Apply radical  rule :

\sqrt[n]{a^n} =a

√(2^2) =2

2* √(5) √(3^2)

Apply radical  rule :

\sqrt[n]{a^n} =a

√(3^2) =3

= 2*3* √(5)

Refine:

√(5) *6

√(5) *6 \sqrt{x ^{9y ^(16) } }

Apply radical rule : 

\sqrt[n]{a^m} = a (m)/(n)

\sqrt{x ^{9y ^(16) } } = x (9y ^(16) )/(2)

= √(5) *6x (9y ^(16) )/(2)

hope this helps!

What is the integer of elevation of 145 feet

Answers

It is -145 because u change it to a negative sense it is a integer 

Can someone show me how to do Mean absolute deviationWhat is the means-to-MAD ratio of the two data sets, expressed as a decimal?
Data set Mean Mean absolute deviation (MAD)
1 10.7 2.4
2 13.7 2.5

Answers

To find the mean of a set, add up all of the numbers and divide by how many numbers you have. For the first set:
\mu=\frac{10.7+2.4}2=\frac{13.1}2=6.55
For the second set:
\mu=\frac{13.7+2.5}2=\frac{16.2}2=8.1

To find the mean absolute deviation, (MAD) find the mean of the distances of each number from the mean.
For the first set: 
MAD=\frac{|10.7-6.55|+|2.4-6.55|}2=\frac{4.15+4.15}2=\frac{8.3}2=4.15
For the second set:
MAD=\frac{|13.7-8.1|+|2.5-8.1|}2=\frac{5.6+5.6}2=\frac{11.2}2=5.6
Note that when you only have two data points the mean is directly between them, which is why the distances are the same.

The means-to-MAD ratio is simply that, divide one by the other and that's it.
For the first set:
6.55/4.15=1.57831325
For the second set:
8.1/5.6=1.44642857

How would you algebraically factor x squared minus 15?

Answers

Use:a^2-b^2=(a-b)(a+b)\n-----------------------\n\nx^2-15=x^2-(√(15))^2=(x-√(15))(x+√(15))

The area of a rectangle with width x and length 5x is 5x2. What does the coefficient 5 mean in terms of the problem?

Answers

Answer:

The length is 5 times the width

Step-by-step explanation:

Let

W ----> the width of the rectangle

L ----> the length of the rectangle

we know that

The area of rectangle is equal to

A=LW

In this problem we have

L=5x ----> equation A

W=x ----> equation B

substitute equation B in equation A

L=5W

therefore

The length is 5 times the width

-x - 7y = 18
4x + 7y = -30
How can you order a ladder?

Answers

I can solve
add them equations

-x-7y=18
4x+7y=-30 +
3x+0y=-12

3x=-12
divide 3
x=-4
sub
-x-7y=18
-(-4)-7y=18
4-7y=18
minus 4
-7y=14
dividd e-7
y=-2

x=-4
y=-2
(-4,-2)