Answer:
15
Step-by-step explanation:
15 is 5 * 3 so is not prime.
Answer:
x = 17 and y = 37
Step-by-step explanation:
Let the numbers be x and y.
y = 3 + 2x
xy = 629
substituting y in the second equation we get
x(3+2x) = 629
3x + 2
= 629
2
+ 3x - 629 = 0
Solving a quadratic equation by using its formula:
x = [-3 ±√(9-4(2)(-629)] / 4
x = [-3 ± √5041] / 4
x = [-3 ± 71] / 4
x = 17 and 
Ignore the negative number in x and just use x = 17 in the first equation we get
y = 3 + 2(17) = 37
Answer:
32.5 m
Step-by-step explanation:
A=Bh/2
A=13x5/2
A=65/2
A=32.5
Answer:
2 5/8
Step-by-step explanation:
1 3/4 + 7/8
add the fractions together
look for the lcm bwt 4 and 8
1 6 + 7
____
8
= 13/8 = 1 5/8
1 + 1 5/8
= 2 5/8
Answer:
Hi there!
Your answer is;
-2= x
Step-by-step explanation:
12= -5x +2
-2
10= -5x
/-5
-2 = x
Hope this helps