The answer is C. x=4
Explanation) 49 - 7 (4) = 21
7 (4) = 28
49 - 28 = 21
Actually, the area of the square is 49 cm^2.
The length of one side is sqrt(49 cm^2) = 7 cm (answer)
1. A system of equations to determine the cost of a bottle of juice, is <u>12x + 2.70 = 15.78</u>.
2. From the equation, x = $1.09.
<h3>What is an equation?</h3>
An equation is a mathematical statement that shows that two values are equal.
A system of equations uses numbers and variables.
<h3>Data and Calculations:</h3>
The cost price of a bag of chips = $2.70
The total cost of snacks = $15.78
The total cost of 12-pack of juice bottles = $13.08 ($15.78 - $2.70)
Therefore, a bottle of juice = $1.09 ($13.08/12)
<h3>Equations:</h3>
Let a bottle of juice = x
Total cost of snacks = $15.78
2.70 + 12x = 15.78
or 12x + 2.70 = 15.78
12x = 13.08
x = 1.09 (13.08/12)
Learn more about equations at brainly.com/question/2972832
#SPJ1
Answer:
you can divide the answers by the time duration of the exam and get your answer
Step-by-step explanation:
The measure of angles 1,4,5,8 are congruent meaning they’re the exact same. If angle 1 measures 71 degrees then that means that 4,5,8 also measure 71 degrees. Angles 1&2 are supplementary angles which means their sum is 180. Since we know that angle 1 measures 71 then we can find the measure of angle 2 by 71+x=180 and solve for x (angle 2) which is 109
Angles 2,3,6,7 are congruent which means they also equal 109
*** angles 1,4,5,8 = 71
Angles 2,3,6,7 = 109***