4x^2-25= (2x)^2-5^2=(2x-5)(2x+5)
Used: a^2-b^2=(a+b)(a-b)
Answer:
<h2>17½ years </h2>
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My uncle jimbob took 100 dollars away from me, now i only have 40
how much did i have initially?
Answer:
Step-by-step explanation:
1. chickenpox
2. toxins
3.antibodies
4.pancrease
5. immunization
6. Insulin
7. viruses
8. antibodies
9. environmental
10.Leukemia
Answer:
The width of the rectangle is 2.5 feet
Step-by-step explanation:
Here, we want to calculate the width of the rectangle given its length
Let the area = perimeter = x
Mathematically;
area of rectangle = L * B = 10B
The perimeter of the rectangle = 2(L + B)
Also;
x = 10B
Let’s equate this to the perimeter
x = 10B = 2(L + B)
10B = 2(10 + B)
10B = 20 + 2B
10B -2B = 20
8B = 20
B = 20/8
B = 5/2
B = 2.5
