The amount of money Robert has this week after buying gas is $172.
<h3>Define arithmetic.</h3>
Mathematical arithmetic is the study of the properties of the standard operations on numbers, such as addition, subtraction, multiplication, division, exponentiation, and root extraction. The area of mathematics known as arithmetic deals with the study of numbers and the numerous operations that can be performed on them. Addition, subtraction, multiplication, and division are the fundamental mathematical operations. The symbols shown above stand in for these procedures.
Given Data
Robert usually earns $95 per week for mowing lawns.
Amount = $95
This week, he doubled his normal earnings,
Amount = $95 × 2
Amount = 190
but, spent $18 on gas for his lawnmower.
Amount = $190 - $18
Amount = $172
The amount of money Robert has this week after buying gas is $172.
To learn more about arithmetic, visit:
brainly.com/question/11559160
#SPJ13
Answer:
In standard form the first equation is 3x + 4y = 12
Step-by-step explanation:
In order to find this, we need to solve for the constant and then eliminate the denominators.
y = -3/4x + 3
3/4x + y = 3
3x + 4y = 12
Answer:
2 students out of 20 have blonde hair.
Step-by-step explanation:
20 was the total number if u divide 20 ÷ by 10 = 2
so 2 is 1/10
because is only 1 out of 10
Answer:
95% Confidence interval: (0.375,0.377)
Step-by-step explanation:
We are given the following in the question:
Sample mean, 
= 0.376 cc/cubic meter
Sample size, n = 15
Alpha, α = 0.05
Sample standard deviation, s = 0.0012
Degree of freedom =
95% Confidence interval:
Putting the values, we get,
(0.375,0.377) is the required 95% confidence interval for the population mean potassium chloride concentration.
The given expression is
We just have to divide by 2
<h2>Hence, the solution is all real numbers less than 10.</h2>
