Step-by-step explanation:
iii=90
41+i=90(opposite angle)
i=90-41
i=49
26+ii+49+41=180(straight line angle)
116+ii=180
ii=180-116
ii=64
50+25+iv=26+64(opposite angle)
75+iv=90
iv=90-75
iv=15
55+i+55=180(straight line angle)
110+i=180
i=180-110
i=70
ii=55(alternative angle)
For 24 keep the orders of operation in mind. So first we'd work out what's in parentheses, so we'd start by doing 5-3, which is 2. We'd then add 2+2 to get 4. Then we multiply 16 and 4 to get 64. So the correct answer is 64.
For the second part of 24 we first multiply 3 and 4 to get 9. We would then subtract 17-9 to get 8. Finally, we'd add 8+2 to get 10. So the correct answer is 10.
As for 25, the answer is 6400 centimeters^3.
2x-24 = 68 2x = 92 so x = 46. Sarah is 22 and her mum is 46.
You'll have to solve simultaneously
let nickel be x, dime be y
x + y = 35 ... ( 1 )
5x + 10 y = 250
5 ( x + 2y ) = 250
x + 2y = 50 ... ( 2 )
in ( 1 )
x = 35 - y ( 3 )
sub ( 3 ) into ( 2 )
( 35 - y ) + 2y = 50
y = 15
sub y into ( 1 )
x + y = 35
x + 15 = 35
x = 20
therefore, Sandy has 20 nickels and 15 dimes
Answer:
26. length=7cm width=4cm
27. length=12cm width=5cm
28. length=12 cm width=9cm
29. length=7 cm
30. length=2cm
