Answer:
A
Step-by-step explanation:
The area (A) of a triangle is calculated using the formula
A = 
bh ( b is the base and h the perpendicular height )
here b = 14 and h = 4, hence
A = (14 × 4) = 28
4*(2x+1)=(2x+1)+(2x+1)+(2x+1)+(2x+1)=
2x+2x+2x+2x+1+1+1+1=
=8x+4
I hope this is ok !
(3x−9x)+(12+8)
Answer
−6x+20
Answer:
Step-by-step explanation:
Vicky jogged 4 1/2 miles or 9/2 miles or 4.5 miles
7/8 of 60 min=(7*60)/8=(7*15)/2= 52.50 min
4.5 miles....................52.50 min
? miles.......................60 min
vicky will have a rate of 5.14 miles/hour
Answer:
x = - 7, x = - 1
Step-by-step explanation:
Given
x² + 8x + 7 = 0
Consider the factors of the constant term (+ 7) which sum to give the coefficient of the x- term (+ 8)
The factors are + 7 and + 1 , since
7 × 1 = 7 and 7 + 1 = 8 , then
(x + 7)(x + 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 7 = 0 ⇒ x = - 7
x + 1 = 0 ⇒ x = - 1
