(x-9)(x+7)=0
x-9=0 or x+7=0
x=9 or x=-7
:)
Answer:
3. 6.40
Explanation:
Answer:
2
Step-by-step explanation:
Answer:
X= 1/2 Y= 5
Step-by-step explanation:
8x+7y=39-------------(1)--------×2
4x-14y= -68-----------(2)-------×1
16X + 14Y = 78--------(3)
4X- 14Y = -68----------(4)
Addy equation (4) and (3)
20X = 10
dividing bothsides by 20
20X/20= 10/20
X = 1/2
substitute the value of X into equation (1)
8X+7Y = 39
8(1/2)+7Y= 39
4+7Y = 39
7Y = 39-4
7Y = 35
dividing bothsides 7
7Y= 35/7
Y = 5
Answer:
11 cm
Step-by-step explanation:
To find radius just divide diameter of 22 by 2. The answer will be 11.
