First you simply have to substitute 2 in replace of all the a's, and -2 in replace of all of the b's
4((2)2+2(-2))
Then you want to follow the order of operations, PEMDAS (Parantheses-Exponent-Multiplication-Division-Addition-Subtraction), and multiply within the parantheses.
4(4+(-4))
Next you will add within the parantheses (So add the 4 and -4 together)
4(0)
Lastly multiply
0
Your answer is 0
Hope this helps!
Answer: b=11.26
Step-by-step explanation:
using the length 15 solve for the lengths z and x because the big triangle is also a 30 60 90. x=7.5, z=12.99 (13). Once you know z you can solve for y and b. y=6.5 and b=11.26.
Answer:
73.7
Step-by-step explanation:
convert 55% into a decimal .55 then do .55 times 134
Answer:
Step-by-step explanation:
We would apply the formula for exponential decay which is expressed as
A = P(1 - r/n)^ nt
Where
A represents the value after t years.
n represents the period for which the decrease in value is calculated
t represents the number of years.
P represents the value population.
r represents rate of decrease.
From the information given,
P = 23000
r = 8% = 8/100 = 0.08
n = 1
Therefore, the exponential decay function described in this situation is
A = 23000(1 - 0.08/n)1)^ 1 × t
A = 23000(0.92)^t
If A = 15000, then
15000 = 23000(0.92)^t
0.92^t = 15000/23000 = 0.6522
Taking log of both sides to base 10
Log 0.92^t = log 0.6522
tlog 0.92 = log 0.6522
- 0.036t = - 0.1856
t = - 0.1856/- 0.036
t = 5 years to the nearest year
Answer:
The numbers are -6 and -4.
Step-by-step explanation:
![x * (x + 2) = x + 30\\x^{2} + 2x = x + 30\\x^{2} +x-30=0\\(x+6)(x-5)=0\\](https://tex.z-dn.net/?f=x%20%2A%20%28x%20%2B%202%29%20%3D%20x%20%2B%2030%5C%5Cx%5E%7B2%7D%20%2B%202x%20%3D%20x%20%2B%2030%5C%5Cx%5E%7B2%7D%20%2Bx-30%3D0%5C%5C%28x%2B6%29%28x-5%29%3D0%5C%5C)
x = -6 and x = 5 (which is not negative).