Pls help me I reallyyyyy don't understand
1 answer:
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Given:
The system of inequalities:
To find:
Whether the points (–3,–2) and (3,2) are in the solution set of the given system of inequalities.
Solution:
A point is in the solution set of the given system of inequalities if it satisfies both inequalities.
Check for the point (-3,-2).
This statement is true.
This statement is also true.
Since the point (-3,-2) satisfies both inequalities, therefore (-3,-2) is in the solution set of the given system of inequalities.
Now, check for the point (3,2).
This statement is false because .
Since the point (3,2) does not satisfy the second inequality, therefore (3,2) is not in the solution set of the given system of inequalities.
Answer:
The value of is -16.
Step-by-step explanation:
We need to evaluate for x = -1, y = 5 and let us assume that z = 1
It can be simply done by putting the values of x,y and z in the given expression.
We know that the value of 4² = 16
So,
So, the value of is -16.
Store A will be the better buy.
The price will be $53.70 after sales tax at store A.
Step-by-step explanation:
Price of Jacket at store A = $59.60
Discount = 15%
Discount Amount =
Discount Amount =
Price after discount = Original price - Discount amount
Price after discount = 59.60 - 8.94 = $50.66
Price of Jacket at store B = $50.99
The price at store A becomes less than store B after discount, therefore, buying from store A is better.
Sales tax = 6%
Sales tax amount =
Sales tax amount =
Price after sales tax = Discount price at store A + Sales tax amount
Price after sales tax = 50.66 + 3.0396 = $53.6996
Rounding off to nearest hundredth;
Price after sales tax = $53.70
The price will be $53.70 after sales tax at store A.
Keywords: percentage, addition
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