Answer:
Step-by-step explanation:
3 times 4 is 12. you can solve this by dividing 12 by 3, or by skip counting and using repeated addition.
The answer is A.multiply 3 * 6 and 3.6 * 5 and see if cross products are equivalent
Answer:
![\huge\boxed{2 \sqrt{10}}](https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7B2%20%5Csqrt%7B10%7D%7D)
Step-by-step explanation:
When taking a square root and making it a radical, we need to list out it's factors and find which one we can take the square root of.
The factors of 40 are:
1, 2, 4, 5, 8, 10, 20, 40.
Out of these, we need to look for one that we can find the square root of.
We know that the square root of 4 is 2.
Therefore, we can make
into
.
The square root of 4 is 2. Therefore, we can put that outside the radical.
.
Hope this helped!
Answer:I don’t understand too
Step-by-step explanation:
Sorry I can’t help you
Answer:
x = 4 or x = -3/2
Step-by-step explanation:
To simplify and solve this, let's use the quadratic formula.
So the format of a quadratic equation is supposed look like this:
![ax^2+bx+c=0](https://tex.z-dn.net/?f=ax%5E2%2Bbx%2Bc%3D0)
Let's find a, b, c:
- a is the coefficient of x^2
- b is the coefficient of x
- c is the constant term
Now let's solve the equation.
Let's solve your equation step-by-step.
2x^2−5x−12=0
For this equation: a=2, b=-5, c=-12
2x^2+−5x+−12=0
Step 1: Use quadratic formula with a=2, b=-5, c=-12.
![x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-b%5Cpm%5Csqrt%7Bb%5E2-4ac%7D%20%7D%7B2a%7D)
![x=\frac{-(-5)\pm\sqrt{(-5)^2-4(2)(-12)} }{2(2)}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-%28-5%29%5Cpm%5Csqrt%7B%28-5%29%5E2-4%282%29%28-12%29%7D%20%7D%7B2%282%29%7D)
![x=\frac{5\pm\sqrt{121} }{4}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B5%5Cpm%5Csqrt%7B121%7D%20%7D%7B4%7D)
or ![x=\frac{-3}{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-3%7D%7B2%7D)
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<u>Answer:</u>
x = 4 or x = -3/2