Estimate : 23 × 67
20 (lower down, lower than 5...the last digit) × 70 (Higher, higher than 5)
=20×70
=1400
The estimated value will be 1400
Answer:
5 Soup can
Step-by-step explanation:
If 3 soup can cost $3.75
Then 1 soup can will cost $3.75/3
So, how many can soup will cost $6.25
= $6.26/(cost of 1 soup can)
= $6.25/($3.75/3)
=$6.25 × 3÷ 3.75
= 5 cans of soup
If you form a triangle with the points B and C as two of the points of the right angled triangle then you use Pythagoras to find the length of BC.
3^2+4^2=25
√25 = 5
Answer:
and example hope it helps
Answer:
A. Z = 2 + N13
Step-by-step explanation:
Let's solve your equation step-by-step.
0=z2+4z−9
Step 1: Subtract z^2+4z-9 from both sides.
0−(z2+4z−9)=z2+4z−9−(z2+4z−9)
−z2−4z+9=0
For this equation: a=-1, b=-4, c=9
−1z2+−4z+9=0
Step 2: Use quadratic formula with a=-1, b=-4, c=9.
z=
−b±√b2−4ac
2a
z=
−(−4)±√(−4)2−4(−1)(9)
2(−1)
z=
4±√52
−2
z=−2−√13 or z=−2+√13
