Given:
The equation is:
To find:
The number that belongs in the green box and another box.
Solution:
We have,
Subtracting 2x from both sides, we get
Adding 2 on both sides, we get
We need to divide both sides by 3 to isolate the variable x.
On dividing both side by 3, we get
Therefore, the missing values are 3 and 3, and the required equation is .
Answer:
A. It has reflectional symmetry
B. It is symmetrical
D. It has five lines of symmetry
Step-by-step explanation:
we know that
A regular pentagon has 5 sides and 5 lines of symmetry. The number of lines of symmetry in a regular polygon is equal to the number of sides
Every regular polygon has reflectional symmetry
Regular polygons are symmetrical
therefore
A. It has reflectional symmetry ------> Is true
B. It is symmetrical -----> Is true
C. It has exactly one line of symmetry ----> Is false
D. It has five lines of symmetry -----> Is true
y = 80x - 60
Answer is B. y = 80x - 60
Double check:
When x = 1, y = 80(1) - 20 = 80 -60 = 20
When x = 2, y = 80(2) - 20 = 160 -60 = 100
When x = 3, y = 80(3) - 20 = 240 -60 = 180
When x = 4, y = 80(4) - 20 = 320 -60 = 260
When x = 5, y = 80(5) - 20 = 400 -60 = 340
Given:
Cost of bracelet without charm - $85
cost of each charm - $15
Function notation: f(x) = 15x + 85
The price of the bracelet depends on the number of charms they will buy. x represents the number of charms they will buy.
The reasonable domain for this function is at least 1. They must buy at least 1 charm because they intend to buy their mom a silver charm bracelet.
If their budget is 250
250 = 15x + 85
250 - 85 = 15x
165 = 15x
165/15 = x
11 = x
They can buy at most 11 charms without going beyond their budget.
