Answer:
(-7)(-1.2)=8.4
(7)(-1.2)=-8.4
(2.5)(-2)=-5
(-2 1/2)(2)=5
Step-by-step explanation:
First,a negative multiplied by another negative will have a product that is positive.
Also, -2 1/2 is the same as -2.5
Answer:
Angles C and D are what I think are called Supplementary angles. Therefore they equal 180 degrees.
Step-by-step explanation:
If you subtract the measure of angle D by 180 degrees then you should get the measure of angle C which is 56 degrees. I don't really know what they are asking for in the first question. You didn't put any of the choices. :)) Think this may be right.
Answer:
I Think the honor of total students is 50%
Step-by-step explanation:
25 +17=45
Round 45 to the nearest tenth and you get 50
<h3>Given</h3>
regular paper costs $3.79 per ream
recycled paper costs $5.49 per ream
$582.44 was spent for 116 reams
<h3>Find</h3>
the numbers of reams of each type that were purchased
<h3>Solution</h3>
Let r and g represent the numbers of reams of regular and recycled ("green") paper, respectively.
... r + g = 116 . . . . . . . . 116 reams were purchased
... 3.79r + 5.49g = 582.44 . . . . this is the total cost of the purchase
Solve the first equation for r and substitute that into the second equation.
... r = 116 - g
... 3.79(116 - g) + 5.49g = 582.44 . . . . . use the expression for r
... 1.70g + 439.64 = 582.44 . . . . . . . . . simplify
... g = (582.44 -439.64)/1.70 = 84 . . . . subtract the constant, divide by 1.70
... r = 116 -84 = 32 . . . . . . . . . . . . . . . . . use the equation for r
32 regular reams and 84 recycled reams were purchased