5+5= 10
10 time 9b is 90b
10 times -7 is -70
Then 90b-70
Answer:
9
Step-by-step explanation:
13 - 5 = 8
8 / 2 = 4
13 - 4 = 9
Answer:
$515.35
Step-by-step explanation:
y-hat = 2.009x - 37.131
y-hat = 2.009(275) - 37.131
y-hat = 552.475 - 37.131
y-hat = 515.344
Therefore, the pizza parlor can expect a profit of $515.35 if it sells 275 pizzas.
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>
