Answer:
20 ft
Step-by-step explanation:
1 in = 8 ft
2.5 in = 2.5 × 8 = 20 ft
The length of the basemennt is 20 ft.
54/-2 = -27
First, let's rewrite:
Let x represent the unknown number:
Hence, 54/-2 = -27
1. n-3n=14-4n
n-3n+4n=14
2n=14
n=7
2. -8n+4(1+5n)=-6n-14
-8n+4+20n=-6n-14
12n+6n=-14-4
18n=-18
n=-1
3. -10+x+4-5=7x-5
x-7x=-5+10-4+5
-6x=6
x=-1
4. -6n-20=-2n+4(1-3n)
-6n-20=-2n+4-12n
-6n+2n+12n=4+20
8n=24
n=3
Answer:
5
Step-by-step explanation:
5x=12+3
5x=15
X=15/3
X=5
Hello,
y=x²+2x+7
y=x+7
==>x²+2x+7=x+7
==>x²+x=0
==>x(x+1)=0
==>(x=0 and y=7) or (x=-1 and y=-1+7=6)
Sol={(0,7),(-1,6)}