Answer:
4/7.
Step-by-step explanation:
This the question in which marbles have to be taken out of a bag. Odds in another word for probability.
Total number of marbles in the bag = 2 Blue + 1 Green + 4 Red = 7 marbles.
Required marbles = 3 red marbles.
Therefore:
P (a red marble is selected in the first attempt) = Red Marbles / Total Marbles.
P (a red marble is selected in the first attempt) = 4/7.
Therefore, the correct answer is 4/7!!!
Answer:
D
Step-by-step explanation:
Pythagoras theorem
the square of the hypotenuse= (adjacent) square +(opposite) square
Consider angle XZY in the attached figure. It is always 1/2 the measure of arc XY, no matter where Z may be located on the major arc XZY. This is true even when ZY is very short.
Now, consider what happens when Z falls on top of tangent point Y. The angle is still half the measure of arc XY, still 62°.
Selection C is appropriate.
_____
I apologize for any confusion caused by my choice of Z as the name of the point I added. Nothing in my explanation is intended to refer to the Z already shown in the unmodified figure.
Hey there, Lets solve this problem together.
Our first step will be to g<span>ather like terms
</span>
<span>
Simplify 5×−2k×k to −5×2k×k
</span>
Simplify <span><span>5×2k×k</span></span><span> to </span><span><span>10<span>k^2
</span></span></span>

<span><span><span>
</span></span></span>
Answer:
D. 13
Step-by-step explanation:
well since it's a quadratic equation, it can be written in the form of ax²+bx+c=0. So we have a=1, b=b and c= -30. Also the roots are given by the equation-
x= -b±
/2a. So all I did was put the number from the choices which would satisfy the sqrt part and that turned out to be 13 since
=
= 17. So b=13.