Answer:
Step-by-step explanation:
OPTION C - No, because each number drawn is equally likely and independent of the others, so this set of numbers is just as likely as any other in the next drawing.
Answer:
20 Units
Step-by-step explanation:
Hight times length/by half is tribular prism Formula
It might be easier to convert to minutes. So her trip to the store took 70 minutes. So her return trip took 5/7 x 70 = 50 minutes. Which means her total time was 2 hours or 120 minutes.
Answer:
x=85
Step-by-step explanation:
The angles are vertical angles, therefore they are congruent. This means we can set them equal to each other.
x+5=90
Solve for x by isolating x. To do this, subtract 5 from both sides
x+5-5=90-5
x=85
So, x=85, and the second choice is correct.
<span>The
<u>correct answers</u> are:
Malcolm's maximum speed is 200 km/hr and Robbie's is 320 km/hr.
Explanation<span>:
Let R be Robbie's maximum speed and M be Malcolm's maximum speed. If Malcolm's speed is doubled (2M), it is 80 more than Robbie's (R+80); this gives us the equation
2M = R + 80.
We can isolate M by dividing both sides by 2:
2M/2 = R/2 + 80/2
M=R/2+40.
We know that their average is 260 km/hr. The average is found by adding the two maximum speeds together and dividing by 2:
(M+R)/2=260.
We will substitute our value for M from above:
</span></span>
<span><span>
To solve this, we can multiply both sides by 2:
</span></span>
<span><span>
We can combine like terms, but to do that, we must write R as a fraction over 2. Since it is 1R, this is 2R/2:
</span></span>
<span><span>
Subtract 40 from both sides:
</span></span>
<span><span>
Now we will multiply both sides by 2:
</span></span>
<span><span>
Divide both sides by 3:
</span></span>
<span><span>
Plugging this into our first equation for M, we have:
M = R/2+40
M = 320/2+40
M = 160+40
M=200.</span></span>