I don't like these computer choice thingies. It detracts from the math.
If we want to eliminate x we multiply the first equation by 5 then add it to the second:
OK, that's how it's done. Reading through the choices, that's choice D.
X^2-22x-48=0
x^2-24x+2x-48=0
x(x-24)+2(x-24)
(x+2)(x-24)
Solve by grouping if you are able to find distinct factors that multiply to the last term and add to the middle term...this method is rather easy with easy to manage numbers. Complete the square if you cannot find distinct factors that multiply to the last term and add to the middle term. Completing the square helps when the equation is in the form of a parabola.
Answer:
2.2 degrees per hour
Step-by-step explanation:
22/10=2.2
Answer:
5
Step-by-step explanation:
none of the above are true
1. intersect at x=45
so y=sqrt(2)
2. y=cscx period is doubled y=tanx
3. not the same
4. no local maximum of y=secx
minimum point of y=sinx is -1
so none of the above are true
Answer:
4/6 or simplifed to 2/3
Step-by-step explanation:
To find half of anything, you are dividing by 2 or multiplying it by 1/2.
If you are working in fractions, it's easier to do the later (multiplying by 1/2)
So you have 1 1/3 cups of walnuts being multiplied by 1/2.
You should convert any mixed number to an improper fraction first before multiplying or dividing with another fraction.
1 1/3 Mixed number = 4/3 as an improper fraction
So now you can use 4/3 x 1/2
To multiply fractions, you just multiply the numerators together then put that over multiplying the denominators together.
4x1 over 3x2
= 4/6
