Answer:
4s< 32
Step-by-step explanation:
Congruent sides mean they are all the same length
Let the length be s
Perimeter means add the sides
s+s+s+s < 32
4s< 32
I don't know for sure, but I think its called the third runner-up.
The difference between -11 and -18 is -7
the difference between -18 and -25 is <span>-7
</span>the difference between -25 and -32 is <span>-7
</span>
therefore we can say that the difference between all of the terms will be -7.
the first term is -11 -> call this a
the difference is -7 -> call this d
the number of terms is 14 -> call this <span>n
</span>
use the equation (sum of)

=

(2a + (n-1)d)
(sum of)

=

(2 x -11 + (14-1)-7)
= -7(-22 + (13 x -7))
= -7(-22 + -91)
= -7(-111)
= 777
Answer:
she would buy 5 books
Step-by-step explanation:
150 - 56 = 94
94 ÷ 20 = 4.7
Rounds up to 5 books
if 5 books is not the answer.
try 4
Answer:
x = -7
, y = 5 thus D)
Step-by-step explanation:
Solve the following system:
{4 x - 4 y = -48 | (equation 1)
5 x - 6 y = -65 | (equation 2)
Swap equation 1 with equation 2:
{5 x - 6 y = -65 | (equation 1)
4 x - 4 y = -48 | (equation 2)
Subtract 4/5 × (equation 1) from equation 2:
{5 x - 6 y = -65 | (equation 1)
0 x+(4 y)/5 = 4 | (equation 2)
Multiply equation 2 by 5/4:
{5 x - 6 y = -65 | (equation 1)
0 x+y = 5 | (equation 2)
Add 6 × (equation 2) to equation 1:
{5 x+0 y = -35 | (equation 1)
0 x+y = 5 | (equation 2)
Divide equation 1 by 5:
{x+0 y = -7 | (equation 1)
0 x+y = 5 | (equation 2)
Collect results:
Answer: {x = -7
, y = 5