Answer:
4260
Step-by-step explanation:
Answer:
Step-by-step explanation:
Eliminate answer 4 immediately, because (4)(3) is not 7.
Look at answer 2: 7x + 3x = 10x, which does not match the middle term 12x in the original polynomial. Eliminate answer 2.
Look at answer 1: 1x + 21x = 22x, which does not match the middle term of the original polynomial. Eliminate answer 1.
All quadratics have solutions. Let's apply the quadratic formula to 3x^2 + 12x + 7: Here a = 3, b = 12 and c = 7, so that the discriminant b²-4ac is
12²-4(3)(7), or 144 - 84, or 60. Being positive, this tells us that the given poly has two real, unequal roots:
-12 ± √60 -12 + 2√15 -12 - 2√15
x = ----------------- = ------------------- and x = --------------------
3 3 3
Normally, if c is a root, then x - c is a factor.
If we try this here, however, the resulting factors do not at all match any of your answer choices.
Don't be offended...but please ensure you have copied this problem down correctly.
1 inch = 2.54 cm
so multiply 27 by 2.54
27 x 2.54 = 68.58 cm long
Answer:
The mold will cover half the area as much are one day before it.
Step-by-step explanation:
Given:
Every day the mold on bread grows doubles
And by 8th day entire bread covered with it.
To Find:
When was half the bread covered by mold.
Solution:
It is said that area covered by mold doubles on each day
Total days taken to cover entire bread are 8
Let Area of bread be A
So Area covered (A) corresponds to 8 days with doubling.
So on previous day it should What ever area on 8th day/2
i.e A(8)/2
Similar on 6th day A(7)/2
So on 5ht day =A(6)/2 ,4th= A(5)/2, on 3rd= A(4)/2, on 2nd=A(3)/2
On 1st =A(2)/2
So we required Area= half of total.
<em>One day before the 8th day will be 7th day</em>
<em>on that day it will cover half are so that on next day will cover the double of the previous area consumed.</em>
Answer:
y = 100°
Step-by-step explanation:
x = 40° (vertical angles are congruent)
y is an exterior angel of a triangle that has two opposite internal angles, x (40°) and 60°.
According to the exterior angle of a triangle, thus:
y = 40 + 60
y = 100°
