Answer:
49.71 miles per hour
Step-by-step explanation:
The speed of the vehicle is at a rate of 80 kilometers per hour.
Convert km to miles.
80 kilometers = 49.7097 miles
The speed is approximately 49.71 miles per hour.
Answer:
the Rule of 72 is also used to determine how long it takes for money to halve in value for a given rate of inflation
Step-by-step explanation:
sorry idk other question
3. 180 - (53+68) = 59
The answer is B. 59°
4.
Part A: The measure of a is 70°.
Explanation: The angle sum in any triangle is 180°. 70 + 40 is 110. To find the final angle, subtract 110 from 180. 180 - 110 = 70
Part B: The length of x is 5m.
Explanation. The triangle is an isosceles triangle. We know this because the two angles on the base are equal. Since this is an isosceles triangle, the two longer sides are the same length. Therefore: x = 5 m.
Answer:
1
Step-by-step explanation:
can be expressed as 
= 
Similarly 
can be expressed as 
= 
Numerator becomes:
· 
= 
Denominator becomes:
· 
=
Since numerator = Denominator,
Answer = 1
Edit reason: typo
Alright, so you have the basic formula- good.
You have the A value (400), the interest rate r (7.5% -> .075 in decimal), and the final P value (8500). So, we only need to solve for t.
8500 = (400)(1+.075)^t
/400 /400
21.25 = 1.075^t
logarithms are the inverse of exponents, basically, if you have an example like
y = b^x, then a logarithm inverts it, logy(baseb)=x
Makes sense if you consider a power of ten.
1000 = 10^3
if you put logbase10(1000), you'll get 3.
Anyways, though, to solve the problem make a log with a base of 1.075 in your calculator
log21.25(base 1.075) = t
also, because of rules of change of base (might want to look this up to clarify), you can write this as log(21.25)/log(1.075) = t
Thus, t is 42.26118551.
Rounded to hundredths, t=42.26
