Hello!
Let's multiply each thing here.
4(4)=16
3(5)=15
15=16=31
50-31=29
Therefore, her change is $29.
I hope this helps!
To solve this, just take $80 and subtract her amount of money she has now, which is 8. $80-$8=$72
She needs $72
Answer:
28°C
Step-by-step explanation:
First you do 3*19=57°C
-5+57= 52°C
then you do 4*6=24 °C
as its being cooled you takeaway
52-24=28°C
Answer:
21, 22, and 23
Step-by-step explanation:
Three consecutive natural numbers can be represented as n, n+1, and n+2.
The square of the smallest number would be 
and its equal to the product of the other two (n+1)(n+2).
So the equation is 
.
If n is 21 then the next numbers are 22 and 23.
<u>Question 2</u>
1) 
(given)
2) 
(reflexive property)
3) 
are right angles (perpendicular lines form right angles)
4) 
are right triangles (a triangle with a right angle is a right triangle)
5) 
(HL)
<u>Question 3</u>
1) 
is a right angle, 
(given)
2) 
is a right angle (perpendicular lines form right angles)
3) 
are right triangles (a triangle with a right triangle is a right angle)
4) 
(reflexive property)
5) 
(HL)
6) 
(CPCTC)
7) 
bisects 
(if a segment splits an angle into two congruent parts, it is an angle bisector)
