Answer:
17/20
Step-by-step explanation:
Probability is actually very fun once you understand it. So, you know that the bag contains 20 marbles. You also know that only 3 of those 20 are yellow. Subtract 3 from 20 and you get 17, which is your answer. Hope this helped, and let me know if you need any more help!
Answer:
<h3>.2a + 4b = -2</h3><h3> 2a + 3b = 23</h3><h3><u>We</u><u> </u><u>subtr</u><u>act</u><u>.</u><u>.</u></h3><h3><u> </u><u> </u><u>0</u><u> </u><u>+</u><u> </u><u>b</u><u> </u><u>=</u><u> </u><u>-</u><u>2</u><u>5</u></h3>
<h3>a + (2×-25) = -1</h3><h3>a - 50 = -1</h3><h3>a = -1+50</h3><h3><u>a</u><u> </u><u>=</u><u> </u><u>4</u><u>9</u><u>.</u></h3>
<h3><u>a</u><u> </u><u>=</u><u> </u><u>4</u><u>9</u></h3><h3><u>b</u><u> </u><u>=</u><u> </u><u>-</u><u>2</u><u>5</u><u>.</u></h3>
Step-by-step explanation:
<h3><u>provin</u><u>g</u><u> my</u><u> </u><u>an</u><u>swer</u><u>.</u></h3>
<h3>a + 2b = -1</h3><h3>49 + (2×-25) = -1</h3><h3>49 - 50 = -1</h3>
<h3>2a + 3b = 23</h3><h3>(2×49) + (3×-25) = 23</h3><h3>98 + (-75) = 23</h3><h3>98 - 75 = 23</h3>
Answer:
4g - 1
Step-by-step explanation:
4 and -5 are numbers
While, -6g and 10g are variables.
Add numbers and variable separately.
4 + -6g + 10g + -5
= 4 - 5 + 10g - 6g
= - 1 + 4g
= 4g - 1
Answer:
B
Step-by-step explanation:








The answer is A.
(a-1)(a-2)
a * a= a^2
a * -2= -2a
a * -1 = -1a = a
-1 * -2 = 2 because two negative signs make a positive.
Put them together:
a^2 - 2a - a + 2
= a^2 - 3a +2