Answer:
so what's 10 x 15?
that's what it's mainly asking you
10 x 15
answer: is 150
- that's what I think it is..
Answer:
y = -3x - 4
Step-by-step explanation:
y = mx + b
-10 = -3 (2) + b
-10 = -6 + b
b = -4
Answer:
All positive integers and zero
A is correct
Step-by-step explanation:
A box of pencils costs $10
The total cost (c) as a function of the number of boxes (b) is expressed as
c = f(b) = 10b
The function, f(b) = 10b
b is independent variable and c is dependent variable.
For any function find domain using independent variable.
b represents number of boxes.
Number of boxes neither be negative nor decimal.
Possible value of b: {0,1,2,3,4,5,.......}
All positive integers and zero.
Domain: All positive integers and zero
Step-by-step explanation:
there is no real number solution for the square root of a negative number.
a sqare root multiplied by itself had to deliver exactly the number inside the square root.
so for sqrt(-49), what can be the answer ?
which number multiplied by itself gives -49 ?
it any negative number at that.
because
a × a = a²
and
-a × -a = a² but definitely not -a².
we get a negative number only, when we multiply a positive number with a negative number or vice versa.
the only solution is complex or imaginary (based on the imaginary number i):
i² = -1
i = sqrt(-1)
so, sqrt(-49) = sqrt(49 × -1) = 7×sqrt(-1) = 7i
but again, no real solution.
