B......hope this was helpful
Answer:
x=2
Step-by-step explanation:
5x+ = 7
5x+4 =7 (2)
5x+4=14
5x=14-4
5x=10
=
x=2
Answer:
They are thinking about either 63 or -63
63 multiplied by -63 is equal to -3969
Step-by-step explanation:
The multiples of 63.
63,126,189,252,315
The factors of 63
1,3,7,9,21,63
As we can see, 63 is common, so is -63 if we go to the negative side.
So we multiply 63 and -63 and we get -3969
63 multiplied by -63 is equal to -3969
Your answer would be the last option, 80 cm.
As this is a right triangle, you can use Pythagoras's Theorem, a² + b² = c², where 'c' is the hypotenuse and 'a' and 'b' are the legs, to find the missing side.
This gives us:
48² + 64² = 2,304 + 4,096 = 6,400
√6,400 = 80
So 80 is your answer.
I hope this helps!