20p+22p-12p=90

whats the value of p and show work

Answers

Answer 1

Answer: 20p+22p-12p=90
as all of the terms on the left are 'p's then we consider them to be called like terms. When we have like terms we can add or subtract freely.
so:
20p+22p-12p=90
20p+22p=42p
42p-12p=30p
therefore we get:
30p=90
this is the same as
30*p=90
to find do we need to 'work backwards' to move the 30 to be with 90.
So to 'work backwards' we do the opposite of multiply and divide it instead to both sides of the equation.
30/30*p=90/30
p=90/30
p= 3

Answer 2

Answer:

Simplify both sides of the equation

20p+22p-12p = 90

Simplify

30p = 90

Divide both sides by 30

30p/30 = 90/30

p = 3

I hope that's help !

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What is the solution of x - 13 =5

Answers

If you're looking for x then it would be x=18 since you add 13 to both sides to have x alone

x-13=5
+13=+13
x =18
the answer is x=8

If F(x)=2x^2+3, then which of the following represent f(x+1). A.2x^2+2. B. X^2+3. C. 2x^2+4x+1. D. 2x^2+4x+5

Answers

Hi,
If it is f(x)=2x²+3 and not F(x)=2x²+3 then
Answer D.

$f(x)=2x^2+3\nf(x+1)=2(x+1)^2+3\n=2(x^2+2x+1)+3\n=2x^2+4x+5\n$

What is √49/144 expressed in simplest form

Answers

Answer:

49/144

Step-by-step explanation:

Find the GCD (or HCF) of numerator and denominator

GCD of 49 and 144 is 1

Divide both the numerator and denominator by the GCD

49 ÷ 1

144 ÷ 1

Reduced fraction:

144

Therefore, 49/144 simplified to lowest terms is 49/144.

Answer:

7/12

Step-by-step explanation:

7 goes into 49 7x times

and

12 goes into 144 12x times

So if we simplify this, the answer would be

7/12

Matrix Question PLEASE

Answers

make into matrix
$\left[\begin{array}{ccc}2&1&1\n1&-3&-1\n4&5&2\end{array}\right] = \left[\begin{array}{ccc}-2\n14\n-4\end{array}\right]$

accoring to cramer's rule
replace the y collum with eh constant collumn and find the detterminant

$\left[\begin{array}{ccc}2&-2&1\n1&-14&-1\n4&-4&2\end{array}\right]$
det
$2 \left[\begin{array}{ccc}14&-1\n-4&2\end{array}\right]-(-2) \left[\begin{array}{ccc}1&-1\n4&2\end{array}\right]+1 \left[\begin{array}{ccc}1&14\n4&-4\end{array}\right]$
dunno wat fraction is

pick last option

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