The zero product property tells us that if we have
xy=0, then we can assume that x and y both equal 0
so
(4k+5)(k+7)=0
we can assume that 4k+5=0 and k+7=0
so
4k+5=0
minus 5 both sides
4k=-5
divide both sides by 4
k=-5/4
k+7=0
minus 7 both sides
k=-7
k=-5/4 or -7
Answer: bro, many 6
Step-by-step explanation:
Answer:
I thank its b not sure sorry if its wrong
Answer:
<u>Given</u>
- ΔTQR is right
- QS is altitude
- ΔRSQ and ΔTSQ also right
- m∠TQS = 42°, RS = 26 cm
∠RQS and ∠TQS are complementary with ∠TQS, so are 48°
a)
- ∠QRS is the another one with 42°
b)
<u>Find QS first</u>
- 26/QS = tan 48°
- QS = 26 / tan 48° = 23.4
<u>Find QT next</u>
- QS/QT = cos 42°
- QT = QS / cos 42° = 23.4 / cos 42° = 31.5 (rounded)
