Answer:
length of the rectangle=27"
Step-by-step explanation:
length be = l; width be = b
2b-15= l
perimeter= 2(l+b)
=2(2b-15+b)=96
=2(3b-15) =96
3b-15 .=48
3b=48+15=63
b=21. Therefore l = (2 x 21) - 15=42-15 =27"
Answer:
7
Step-by-step explanation:
simplify
7^(½)×7(½). or.
= 7^(½+½). [7^(½)]²
= 7¹ = 7^(2/2) = 7¹
=7
Answer:
x = 125°
Step-by-step explanation:
There are 7 angles in this shape. The sum of the angles in a shape like this is calculated using a formula.
Total of angles
= (n - 2)•180°
Put in 7, because there are 7 angles.
= (7 - 2)•180°
= 5•180°
= 900°
So the total of the angles should be 900°. We know all of the angles except one.
900° = 123°+129°+128°+128°+132°+135°+ x
900° = 775° + x
Subtract 775.
125° = x
The missing angle is 125°.
Answer:
3y is the GCF
Step-by-step explanation:
the lowest value is -9y, so it can't be a value in the exponents
Answer:
24cm^2
Step-by-step explanation:
1/2Bh is the formula to find a triangle.
Round the 7.8 to an 8 and the 5.78 to a 6. Multiply 8 and 6, getting 48. Divide by 2 because you need 1/2 of the base×height.
48÷2=24
