It equals 23. 3+4(5) is basically saying 3+ 4 x 5 and with PEMDAS multiplcation is done first. so 4 x 5= 20. 20 + 3= 23. Hope I helped
1.5=1 pound 7.5=5 pounds 10.5=7 pounds 16.5=11 pounds
Answer:
c
Step-by-step explanation:
c
<span>t≤−14. You have to divide the -5t by -5 to get the t by itself and then you have to divide 70 by -5</span>
12. ∆ABD is similar to ∆PQD, so
QD/z = BD/x
Likewise ∆CDB is similar to ∆PQB, so
QB/z = BD/y
Since QD + QB = BD, you have
QD/z + QB/z = BD/x + BD/y
BD/z = BD/x + BD/y
Dividing by BD gives the desired result:
1/x + 1/y = 1/z
13. Triangles ABD, BCD, and ACB are all similar. This means
AB/AC = AD/AB
AB² = AC×AD = (4 cm)×(9 cm)
AB² = 36 cm²
AB = 6 cm
and
BD/CD = AD/BD
BD² = CD×AD = (5 cm)×(4 cm)
BD² = 20 cm²
BD = 2√5 cm
