Answer:
$13.60
Step By Step:
A nickle is worth 5 cents.
A dime is worth 10 cents.
A quarter is worth 25 cents.
5 Cents • 90 Nickles = 450
10 Cents • 16 Dimes = 160
25 Cents • 16 Quarters = 400
50 Cents • 7 fifty-cent pieces = 350
450 + 160 + 400 + 350 = 1360
A dollar is worth 100 cents.
1360 ÷ 100 = $13.60
Answer:
x1= -7 , x2 = 7
Step-by-step explanation:
x^2 = 37 +12
x^2 = 49
x = -7 or 7
This is a quadratic equation with a general equation of ax^2 + bx + c.
The quadratic formula can help to get the roots of the equation. We know the highest degree of that equation is 2; so there will be also two roots.
The quadratic formula is
x = [-b ± √(b^2 - 4ac)] / 2a
With a = 1, b = 7, c = 2,
x = {-7 ± √[(7)^2 - 4(1)(2)]} / 2(1) = (-7 ± √41) / 2
So the two roots are
x1 = (-7 + √41) / 2 = -0.2984
x2 = (-7 - √41) / 2 = 0.2984
This is also another way of factorizing the equation
(x + 0.2984)(x + 0.2984) = x^2 + 7x + 2
These are the answers with the picture of square root of 64 as number 1
1) 8
2) 81
3) 5
4) 41
5) 6
6) 4
7) 19
8) 30
9) 19
10) 20
11) 7
12) 68
13) 20
14) 65
15) 6
16) 6
The vertex is (-3,3),so a =-3, b=3. a+b=0
