Answer:
The answer is B
Step-by-step explanation:
Since -2/3 multiplied by 3 equals -2, all you need to do is -2+1 which equals -1 which is the same number y is supposed to be.
Hope this helps
Answer:
13 unit
Step-by-step explanation:
By the distance formula,
The distance between two points and is,
Thus, the distance between B(8,-7) and C(-4,-2) is,
Solutions
Gather like terms
<span /><span><span><span><span><span><span>5</span><span>+</span><span>(</span><span>−</span><span>9</span><span>k</span><span>+</span><span>8</span><span>k</span><span>)</span><span>−</span><span>8</span></span><span /></span></span><span /></span></span>2<span>
</span>
Simplify
<span /><span><span><span><span><span><span>5</span><span>−</span><span>k</span><span>−</span><span>8
</span></span><span /></span></span><span /></span></span>
<span> </span>Simplify
<span /><span><span><span><span><span><span>−</span><span>k</span><span>−</span><span>3</span></span><span /></span></span><span /></span><span>
</span></span>
ANSWER
The slant height is 40cm.
EXPLANATION
The lateral area of a cone is given by:
where r=10cm is the radius of the circle and l is the slant height.
It was also given that, the lateral area is 400π cm²
We substitute the values to get,
We now divide both sides by 10π.
This implies that,
Hence the slant height is 40cm.
We can write that 40% of the full amount is 30 marks.
Using x for the full amount, we can say 0.4x=30.
To solve for x, we devide both sides by 0.4 (or equivalently, multiply by 2.5).
We get x = 75 marks.