X plus 20% = 1980 what is x

Mathematics

2 answers:

Elenna [48]3 years ago

4 0

20% = 20/100 = 0.2

x + 0.2x = 1980
1.2x = 1980
x = 1980/1.2
x = 1650 ← <span>unknown number </span>

Deffense [45]3 years ago

3 0

$20\%=0.2\\\\
x+0.2x=1980\\
1.2x=1980\\
x=1650$

You might be interested in

The graphs of y=x2- 3 and y = 3x -4 intersect at

OLga [1]

Answer:

Option 3) (0.38, -2.85) and (2.62,3.85)

Step-by-step explanation:

we have

$y=x^{2}-3$ ----> equation A

$y=3x-4$ ----> equation B

Solve the system by graphing

Remember that the solution of the system of equations is the intersection point both graphs

using a graphing tool

The intersection points are (0.38,-2.85) and (2.62,3.85)

see the attached figure

therefore

The graphs intersect approximately at (0.38,-2.85) and (2.62,3.85)

8 0

4 years ago

Section 4

dybincka [34]

Answer:

A is right answer bro just see

3 0

3 years ago

Write the absolute value inequality in the form Ix−bIc that has the solution set x≤−9 or x≥−5.

Valentin [98]

Answer:

$\large\boxed{|x+7|\geq2}$

Step-by-step explanation:

Look at the picture.

$|x-a|\geq b\\\\a=\dfrac{-9+(-5)}{2}=\dfrac{-14}{2}=-7\\\\b=-9-(-7)=-9+7=-2\\b=-5-(-7)=-5+7=2\\\\|x-(-7)|\geq2\\\\|x+7|\geq2\\\\Check:\\\\|x+7|\geq2\iff x+7\geq2\ \vee\ x+7\leq-2\qquad\text{subtract 7 from both sides}\\\\x+7-7\geq2-7\ \vee\ x+7-7\leq-2-7\\\\x\geq-5\ \vee\ x\leq-9\qquad CORRECT\ :)$