1. 15+37=?
- 15=10+5 (given on the diagram)
- 37=30+7 (given on the diagram)
- add digits to digits 5+7=12=10+2
- add tens to tens 10+30+10=50
- add tens and digits 50+2=52.
2. 22+49=?
- 22=20+2 (given on the diagram)
- 49=40+9 (given on the diagram)
- add digits to digits 2+9=11=10+1
- add tens to tens 20+40+10=70
- add tens and digits 70+1=71.
3. 38+26=?
- 38=30+8 (given on the diagram)
- 26=20+6 (given on the diagram)
- add digits to digits 8+6=14=10+4
- add tens to tens 30+20+10=60
- add tens and digits 60+4=64.
Answer: 1) 52; 2) 71; 3) 64.
Answer:
- 3⁷/2⁹
Step-by-step explanation:
- (-2÷3)⁻³ ÷ x = (9÷8)⁻²
- -(2⁻³)×3⁽⁻¹⁾ˣ⁽⁻³⁾ ÷ x = (3²)⁻²×(2⁻³)⁻²
- -2⁻³×3³÷x = 3⁻⁴×2⁶
- x = -2⁻³×3³ ÷ (3⁻⁴×2⁶)
- x = - 2⁻³⁻⁶×3³⁻⁽⁻⁴⁾
- x = -2⁻⁹×3⁷
- x = - 3⁷/2⁹
Answer:
just try to work and ask your teacher okay I have to find the key to it first
Step-by-step explanation:
Hello,
f(x,y)=4cos x sin y-2
@f/@x=-4sin x sin y
@f/@y=4 cos x cos y
dy/dx=-(@f/@x)/(@f/@y)=sin x sin y/(cos x cos y)=tg x * tg y
