Answer:
(x,y)= (-1,-4)
Step-by-step explanation:
y=4x
put this value of y in 3x-y=1
3x-4x=1
-x=1
x= -1
y=4(-1)
y= -4
So (x,y) ordered pair is (-1,-4)
Fraction of hour was spent by NAncy in lifting weights
Step-by-step explanation:
Time spent at the gym by Nancy = 
Time spent at lifting weights = 
What fraction of hour she spent in lifting weights?
Solving:
Fraction of hour she spent in lifting weights= Time spend at the gym-Time spent at lifting weights
Fraction of hour she spent in lifting weights=
So, Fraction of hour was spent by Nancy in lifting weights
Keywords: Word Problems involving Fractions
Learn more about Word Problems involving Fractions at:
#learnwithBrainly
The same length, if something is congruent it means they’re the same
Answer:
see below
Step-by-step explanation:
sqrt(90)
We know that sqrt(ab) = sqrt(a) sqrt(b)
sqrt(9*10)
sqrt(9) sqrt(10)
3*sqrt(10)
Answer: -17.5
Step-by-step explanation:Use this rule:
1. -a-b=-(a+b)−a−b=−(a+b).
-(12.5+4.8)−(12.5+4.8)
2.Use the algorithm method.
1
1 2 . 5
+ 4 . 8
1 7 . 3
3.After simplification, we have:
-(12.5+4.8)=-17.3−(12.5+4.8)=−17.3
4. Therefore, -12.5-4.8=-17.3−12.5−4.8=−17.3.
-17.3−17.3
