Answer:
B) 55cm
Step-by-step explanation:
Circumference = πd
= x
= <u>55cm</u>
Essentially, you are being asked to factor
... x^2 +9x -10 = 0
That is, you are looking for factors of -10 that add to +9. It doesn't take long to find that -1 and 10 add to +9, so the factorization is
... (x -1)(x +10) = 0
The solutions are the values of x that make these factors zero.
... x = 1 or x = -10
Answer:
1:2
Step-by-step explanation:
The total number of marbles in the jar can be found by adding all the numbers of marbles given:
15+5+10 = 30
Out of 30 total marbles, 15 are red marbles. We can write the ratio as:
15:30
This ration can be simplified to:
1:2
Answer:
Jeremy's house is 4.5 inches far from his friend's house on the map
Step-by-step explanation:
Let us use the ratio method to solve the question
∵ The house of Jeremy's friend is 72 miles away from his home
∴ The actual distance between the two houses is 72 miles
∵ The scale on Jeremy's map is inch is equivalent to 8 miles
∴ Each miles on the map represents actual distance 8 miles
By using the ratio method
→ Map length : Actual length
→ inch : miles
→ : 8
→ x : 72
By using cross multiplication
∵ x × 8 = × 72
∴ 8 x = 36
- Divide both sides by 8
∴ x = 4.5
x represent the distance between the two houses on the map
Jeremy's house is 4.5 inches far from his friend's house on the map
There are 16 tulips because the square root of 16 is 4, which means there will be 4 daffodils and 16+4=20. So the answer is 16 tulips.