Answer: 13 hours
Step-by-step explanation:
The scenario that is being described can be fully made into an equation using three variables. These would be w for the number of weeks, b for the number of hours she babysat that week, and x for the total amount of hours worked. Like so...
5w + t = x
Since we are told that we need to find the total hours worked for a single week (w = 1) and that Erica babysat for 8 hours that week (b = 8), then we only need to solve for the total amount of hours worked (x)
5(1) + 8 = x
5+8 = x
13 = x
Erica worked a total of 13 hours.
Asked and answered here---> brainly.com/question/18598089
Answer:
b) 50
Step-by-step explanation:
you can multiply all of the answers by .7 (70% converted into a decimal) to see which one matches 35 miles.
24.5(.7) = 17.15 INCORRECT
50(.7) = 35 CORRECT
59.5(.7) = 41.65 INCORRECT
200(.7) = 140 INCORRECT
The vertex is at (0, 3) so y=a(x-0)²+3, which is y=ax²+3
next, use a given point to find a: 10=a(3)²+3, so 9a=7, a=7/9
the equation is then y=
as for the first question, the shape is an ellipse, the domain is -5≤x≤5, the range is -3≤y≤3
the equation can be written as :
<span>50 = 5 × 10 + 0 × 1 (5
in the tens place, and 0 in units). </span><span>
<span>We can write each place as a power of ten: </span>
<span>50 = 5 × 10^1 + 0 × 10^0 </span>
<span>Similarly for hexadecimal and binary, but then
using powers of 16 and 2 respectively. </span>
<span>We need to find the digits of the hexadecimal
form. Or in other words, we need to find a and b: </span>
<span>50 = a × 16 + b × 1 </span>
<span>Simply divide 50 by 16 will get you a with some
remainder, which is a multiple in units, and thus b: </span>
<span>50 / 16 = 3 (=a), remainder 2. </span>
<span>[2 / 1 = 2 (=b), remainder 0] </span>
<span>Thus 50 in hexadecimal is "32". </span>
<span>For binary, we need to do the division a couple of
times more to find all digits. </span>
<span>50 = a × 32 + b × 16 + c × 8 + d × 4 + e × 2 + f ×
1 </span>
<span>50 / 32 = 1 (=a), remainder 18 </span>
<span>18 / 16 = 1 (=b), remainder 2 </span>
<span>2 / 8 = 0 (=c), remainder 2 </span>
<span>2 / 4 = 0 (=d), remainder 2 </span>
<span>2 / 2 = 1 (=e), remainder 0 </span>
<span>[0 / 1 = 0 (=f), remainder 0] </span>
<span>We find that 50 in binary is "110010".</span></span>