Answer:
True
Step-by-step explanation:
Answer:
b.18
Step-by-step explanation:
18/4=4.5
Step-by-step explanation:
Let's take cost of 1 hamburger as h and the cost of 1 hot dog as d.
Therefore, we can form the equations:
3h + 2d = 13 and
2h + 4d = 14
2(h +2d) = 14
h + 2d = 7
h = 7 - 2d
By substituting this to the first equation, we get:
3(7 - 2d) + 2d = 13
21 - 4d = 13
4d = 8
d = $2
h = 7 - 2(2)
h = $3
Hence <u>1 hot dog costs $2</u> and <u>1 hamburger costs $3</u>
Answer:
y= 40° , z = 90°
Step-by-step explanation:
Angle z is a right angle and is therefore 90°
Angles in a triangle add up to 180°
So we can work out y by making an equation:
Therefore y =40°
Hello from MrBillDoesMath!
Answer:
x = 27
Discussion:
Triangle DQC and DBR are similar by AAA so corresponding parts have the same ratio.
x /(x+18) = 39 /(39 + 26) =>
x/(x+18) = 39/65 => as 39 = 13*3 and 65 = 13 * 5
x/(x+18) = 3/5 => cross multiply both sides by x+18
x = (3/5)*(x+18) => multiply both sides by 5
5x = 3(x+18) =>
5x = 3x + 54 => subtract 3x from both sides
2x = 54 =>
x = 27
Thank you,
MrB