Answer:
−2.5d−0.7
Step-by-step explanation:
1 Expand by distributing terms.
-(2.5d+5)+4.3
2 Remove parentheses.
-2.5d-5+4.3
3 Collect like terms.
-2.5d+(-5+4.3)
4 Simplify.
-2.5d-0.7
The answer is A) 7j + 4k + 15
Answer:
x = -4/5 and x = 1
Step-by-step explanation:
5x^2 - x - 4 = 0
Factor out x from the expression.
x (5x +4) - 5x -4 = 0
Factor out the negative sign from the expression.
x (5x + 4) - (5x+4) = 0
Factor out 5x + 4 from the expression.
(5x +4) x (x-1) = 0
When the product of factors equal 0, that means atleast one factor is 0.
5x+4= 0
x-1 = 0
Solve the equation for x.
5x + 4 = 0
Minus 4 from both sides.
5x = -4
Divide by 5.
x = -4/5
Solve the equation for x.
x - 1 = 0
Add one to both sides.
x = 1
Therefore, x = -4/5 and x = 1.
Answer:
Step-by-step explanation:
Exponential function:
An exponential function has the following format:
In which N(0) is the initial value and r is the rate of change, as a decimal.
37.1 million in July 1998
This means that 
So
In July 2005, the internet was linked by a global network of about 353 million host computers.
This is 2005 - 1998 = 7 years, so 
. We use this to find r.
![\sqrt[7]{(1+r)^7} = \sqrt[7]{\frac{353}{37.1}}](https://tex.z-dn.net/?f=%5Csqrt%5B7%5D%7B%281%2Br%29%5E7%7D%20%3D%20%5Csqrt%5B7%5D%7B%5Cfrac%7B353%7D%7B37.1%7D%7D)
The formula is:
79 is a prime, so we cannot reduce it.
