Answer:
144cm²
Step-by-step explanation:
Area of square A Aa = La²
Area of square B Ab= Lb²
If the length of each side of square B is 4cm greater than the length of each side of square A, then;
Lb = La + 4 ... 1
Also if the area of square B is 70cm² greater than the area of square A, then;
Ab = Aa + 70
Since Aa = La² and Ab = Lb²
Lb² = La² + 70 ...2
Substitute 1 into 2;
(La+4)² = La²+70
Expand
La²+8La+16 = La²+80
8La+16 = 80
8La = 80 - 16
8La = 64
La = 64/8
La = 8cm
Since Lb = La + 4
Lb = 8 + 4
Lb = 12cm
Area of square B = Lb²
Area of square B = 12²
Area of square B = 144cm²
Answer:
- <u>Your friend will win the race due to speed.</u>
Explanation:
<em>Looking at the image, if both friends had ran at the same speed rate, the match would've ended as a draw because the distance was equal. However, my friend had ran faster than I did, therefore, my friend would've won the race due to speed.</em>
Hoped this helped.
47 the image says both triangles are similar so all you have to do is take the two angles add them than subtract it by the total of a triangle 180 and you get your answer 47
7 or 8 since 2 and a half hours isnt an even amount of time so thered be an extra 10 minutes
-2(v-2)=-3-2v doesn't have a solution
