48 cups of water
1. 4x4= 16 (number of cups in 1 gallon)
2. 16x3= 48 (cups in 1 gallon x the number of gallons she needs)
Answer:
58.9 miles per hour
Step-by-step explanation:
Step 1: Convert 95 Kilometers per hour to miles per hour
1 Kilometer = 0.62 miles
95 Km x 
cancel Km
95 Km x = 
x 
= 
or 58.9 miles
Change it into speed
58.9 miles per hour (59 miles per hour (Round off))
(Note: I don't know if I should round off because the instructions aren't that clear. This solution might or might not have been thought to you by your lecturer.)
Answer:
Step-by-step explanation:
the second one
Answer:
She wrote a 4 instead of a 3.
There are only 3 numbers that are greater than 7. They are 8, 9, and 10. Mariah must have include 7 in her list. That is how she got 4 instead of 3.
Among the coefficient signs (++-) there is one sign change, so Descarte's rule of signs tells you there is one positive real root. Changing x to -x does not affect the signs, so there is also one negative real root. Then there are two complex roots to bring the total number to 4, the degree of the polynomial.
The factorization is
f(x) = (x^2 +25)(x^2 -4)
Each of these can be factored using the form for factoring the difference of squares.
f(x) = (x -5i)(x +5i)(x -2)(x +2)
There are 2 real roots: ±2.
There are 2 imaginary roots: ±5i.
