Answer:
Martina is 53 inches tall.
Step-by-step explanation:
In order to write an expression that relates the siblings heights we need to attribute variables to each brother. First we will call Martina's height as "m", then we can call her little brother's height as "b". The problem states that Martina's height is 3 inches less than twice the height of her brother so we have:
m = 2*b - 3
Then the problem gives us the height of her brother that is 28 inches tall, so b = 28. We can now compute Martina's height:
m = 2*28 - 3 = 56 - 3 = 53 inches.
<span> <span>1ft : 12in → 12ft : 144in
1in : 12ft = 1in : 144 in
{there are 12 inches in 1 foot, so multiply your feet by 12 to get inches}
1m : 100cm → 15m : 1500cm
1cm : 15m = 1cm : 1500cm
{there are 100 centimetre in 1 metre, so multiply your metres by 100 to get centimetres}
1yd : 3ft → 1yd : 75ft
1ft : 12in → 75ft : 900in
1in : 25yd → 1in : 900in
{there are 3 feet in 1 yard, so multiply your yards by 3 to get feet. THEN, there are 12 inches in 1 foot, so multiply your feet to get inches}
OR
1yd : 3ft → 1ft : 12in → 1yd : 36in
25yd : 900in
1in : 900in
{there are 3 feet in 1 yard and 12 inches in 1 foot, so multiply 3 by 12 to get 36 inches in 1 yard. THEN, multiply 25 yards by 36 inches per yard to get 900 inches.}</span></span><span>Source(s):<span>Self (Maths teacher)
hopes this helps :) :D :)</span></span>
Answer:
C is the right ans for this QUESTION
A is the correct answer. I have already done this and got A and it was right. I hope it is the same to yours. :D
I hope this helped!
Let Q be the point (a, b). Since the midpoint of P (2, 3) and Q (a, b) is (4, 6), we have
(2 + a)/2 = 4
(3 + b)/2 = 6
Solve for a and b :
(2 + a)/2 = 4
2 + a = 8
a = 6
(3 + b)/2 = 6
3 + b = 12
b = 9
So the coordinates of Q are (6, 9).
