Answer:
Lower bound = 5.2
Upper bound = 5.4
Step-by-step explanation:
If a= 4.2 to (1dp):
Upper bound = 4.2 + 0.05 = 4.25
Lower bound = 4.2 - 0.05 = 4.15
If b = 18 (to the nearest whole number)
Upper bound = 18 + 0.5 = 18.5
Lower bound = 18 - 0.5 = 17.5
Therefore:
Lower bound of ((a+b)/a) = ((4.15 + 17.5) / 4.15) = 5.2 to 1 decimal place
Upper bound of ((a+b)/a) = ((4.25 + 18.5) / 4.25) = 5.4 to 1 decimal place
The upper and lower bound are calculated to one decimal place.
Answer:we know that
area of triangle=b*h/2
b=(x-2) m
Area=(x²-4) m²
h=?
(x²-4)=(x+2)*h/2
but remember that
(x²-4)=(x+2)*(x-2)
so
subsititute
(x+2)*(x-2)=(x+2)*h/2
(x-2)=h/2
h=2*(x-2)
the answer is
the height of a triangle is 2*(x-2)
Step-by-step explanation:
<h2>hope its right</h2>
<span>± 1, ± 2, ± 11, ± 22 would be the answer. Hope that helps!</span>
X=20
Step-by-step explanation:
39.90-50= 10.1
10.1÷0.05=202
X=202 texts
Check work 0.05×202=10.1 + 39.90=50
Answer: She has 2.6kolometers left to walk
Step-by-step explanation:
1km=1000m
5km=5000m
Since she has walked 2400m
She has 5000m -2400m =2600m remaining
Recall that
1000m=1km
2600m =2.6km
