2 years ago

Kong took 15%, percent fewer seconds than Nolan took to complete his multiplication timed test. Kong took 85 seconds.

1 answer:

8 0

Answer:

Step-by-step explanation:

Which means that Nolan took 100 seconds. This is all from Khan Academy so it's correct!!

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Nataly_w [17]

First you do 150 divided by 20, which equals 7.5, so then you would do 7.5 times 6 and that equals 45 minutes. Hope that helped!

4 0

3 years ago

ra1l [238]

Answer: 70

Step-by-step explanation:

First you multiply 17x8 then you subtract it by 64 then you divide it by 2 please double check with a parent to make su

6 0

3 years ago

Art [367]

$\text{The vertex of}\ ax^2+bx+c:\\\\(h,\ k),\ \text{where}\ h=\dfrac{-b}{2a};\ k=f(h)=\dfrac{-(-b^2-4ac)}{4a}$

$\text{We have:}\\f(x)=x^2+5x-3\\\\a=1,\ b=5,\ c=-3\\\\h=\dfrac{-5}{2\cdot1}=\dfrac{-5}{2}=-2.5\\\\k=f(-2.5)=(-2.5)^2+5(-2.5)-3=6.25-12.5-3=-9.25$

$\text{Answer: the vertex is in}\ (-2.5;\ -9.25)$

6 0

3 years ago

horsena [70]

The answer is 2/5 which is C. You're welcome

4 0

3 years ago

Ymorist [56]

Answer:

2 is the LCF :)

Step-by-step explanation:

All are divisible by 2. 2 is the lowest number than even numbers can be divided by.

5 0

3 years ago