7 less than -2 times a number x is greater than or equal to 41

Answers

Answer 1

Answer: -2x - 7 ≥ 41 is your answer

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The number of aluminum cans used each year varies directly as the number of people using the cans. If 500 people use 120000 cans in one year, how many cans are used each year in a city which has a population of 130000?

Answers

Answer

31,200,000

Explanation

Firstly, calculate the constant of proportionality.

Al ∝ N

Al = kN Where Al = number of aluminium cans, k = constant and N = number of people using the can.

Al = kN

k = Al/N

= 120000/500

= 240

Equation becomes;

Al = 240N

For 130000 cans;

Al = 240 × 130000

= 31,200,000

Is 0.21 less or greater than half

Answers

0.21 is less than half because a half is 0.5.

So 0.21 is less than 0.5 because the tenths place is less than 5 which makes 0.21 smaller than a half

less than half because .5 is half of one

.5 = .50

compare the 2. that's what I do.

.50

.21

forget the decimal. and pretend that 100 = 1

Hope this helped

Solve the system x+y=54
x-5y=0
A. (-45, -9)
B.(45, 9)
C. (9, 45)
D. (45, 9)

Answers

$\displaystyle \n \begin{cases} x+y = 54 \n x-5y = 0~~~~~| \cdot (-1) \end{cases} \n \n \n \begin{cases} x+y = 54 \n -x+5y = 0 \end{cases} \n \texttt{-------------- gather equations} \n .~~/~~~~~6y = 54 \n \n y = (54)/(6) = \boxed{9} \n \n x = 54 - y = 54 - 9 = \boxed{45} \n \n \texttt{Problem solution: } \boxed{x = 45 ~~ and ~~ y = 9 }$

Evaluate −96 ÷ (−12).

Answers

Answer: 8 Eight 8 8 answer 8

Wendy saved up for a family trip to the beach. For each $1 she saved, her parents pledged to save $5. If her parents were able to save $2, how much did Wendy save?

Answers

225/5 = 45
This means the parents gave her five dollars forty five times. If they gave her a five every time she saved one dollar, you just have to multiply the money she saved each time and the number of times she saved it, and you'll get the answer.
Wendy saved $45 by herself

$45.00. You set up a proportion. You put 1 on top of 5 and put x on top of 225. Once you do that, you multiply 225 by 1 to get 225 then divide it by 5 to get 45.
Example:
1/5 x/225
225 x 1=225
225/5= 45
Answer= $45.00

Within the metric system all units are based on the numbera. 1.
b. 100.
c. 10.
d. 1000.

Answers

Answer:

The answer is the option C $10$

Step-by-step explanation:

we know that

The metric system is a system of measuring based on the meter, kilogram and second (MKS). Is based on the powers of the number $10$

Within the metric system all units are based on the number 10

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