*To solve an inequality, it's the same as if you were solving an equation: Isolate the desired variable to one side to solve.
Firstly, subtract 15 on both sides:
Next, you are going to divide both sides by -30. Since you are dividing by a negative, you are going to flip the inequality symbol. Your final answer will be:
well if you equation is 1/2x=21 then you answer would be x=21
because if you make 1/2 a decimal it is 0.5 and you want to have x alone so you would divide 1/2 by 0.5 and then you would have 1x=21 which is x=21
225,120,000 can be written as 2.2512 x 10^8 in scientific notation. The decimal was moved 8 places to the left, so the exponent is 8.
The number 225,120,000 can be written in scientific notation by first moving the decimal point to the right of the first non-zero digit (2 in this case), and then counting how many places it has moved. It moved 8 places to the left, so the exponent for 10 is 8. Therefore, we can express 225,120,000 as 2.2512 x 108.
So, 225,120,000 in scientific notation is 2.2512 x 108.
#SPJ2
Total amount of lunch money left ($) 100 75 50 25
Which equation, in standard form, represents the relationship between the number of lunches, x, and the amount of lunch money Aaron will have left, y?
x + 5y = 100
100x + y = 5
x + 100y = 5
5x + y = 100
Answer:
its D
Step-by-step explanation:
Answer:
(B)
Step-by-step explanation:
Given: It is given that arc AD=130° and arc AB=arc CD=80°.
To find: The measure of ∠APD.
Solution: It is given that arc AD=130°⇒m∠AOD=130° (The measure of the central angel is equal to the intercepted arc)
Also, arc AB=arc CD=80°⇒m∠AOB=m∠DOC=80° (The measure of the central angel is equal to the intercepted arc)
We know that the sum of the central angles is equal to 360°, thus
m∠AOD+m∠AOB+m∠BOC+m∠COD=360°
⇒130°+80°+m∠BOC+80°=360°
⇒290°+m∠BOC=360°
⇒m∠BOC=360°-290°
⇒m∠BOC=70°
Now, since (The measure of the central angel is equal to the intercepted arc), therefore arcBC=70°.
Also, we know that Angle Formed by Two Secants is half of the DIFFERENCE of Intercepted Arcs, therefore
Substituting the values, we get
⇒
⇒
Thus, the measure of ∠APD is 30°.
Hence, option B is correct.
Answer:
the answer is 25
Step-by-step explanation:
1/2(130-80)
Answer:
no solutions
Step-by-step explanation:
x-y=6
y=x-4
Subtract x from each side
-x+y = x-4-x
-x+y = -4
Add this to the first equation
x-y=6
-x+y = -4
---------------
0x + 0y = 2
0=2
This is never true so there are no solutions
Answer:
No solutions.
Step-by-step explanation:
x - y = 6
y = x - 4
Solve for x in the first equation.
x = 6 + y
Put x as 6 + y in the second equation and solve.
y = (6 + y) - 4
y - y = 6 - 4
0 = -2
There are no solutions.