Answer:
1
Step-by-step explanation:
If there isn't a number in front of a variable then always assume is is one.
For example, look at this equation:
x + 3y = 16
See how there is no number in front of the x?
It can't be 0 in front of the x because 0 times anything is zero, right?
Therefore, it has to be a one.
So, the equation above could be written like this:
1x + 3y = 16
In mathematics it is just automatically assumed that if a term doesn't have a number in front of the variable, then the coefficient of that term is 1.
<em>I hope this helps!</em>
<em>If you have any questions let me know!</em>
<em>- Kay :)</em>
The answer should be 100 minutes, although I'm not really sure.
It should be 13 since 13+8 = 21. 21-7 = 13
Answer:
25
Step-by-step explanation:
Since triangle DBC is isosceles, angles DBC and DCB must be congruent. Angle BDC is 40 so the sum of the measures of the aforementioned angles must be 180 - 40 = 140; divide that by two and you get that the measure of angle DBC is 70. Angles DBC and ABD are supplementary, as they lie on a straight line, so we can deduce the measure of angle DBA is 180 - 70 = 110. The measure of angle DAB is 180 minus the measures of angle DBA and ADB, we figured out angle DBA is 110 degrees and the problem tells us angle ADB is 45 degrees, so we can subtract to get the measure of angle DAB to be 180 - (110 + 45) = 25.
20%of £800 is 800÷5 =160
800 + 160 =960