Product = multiply
Sum = addition
So 9 tenths * 8 tenths = 72 tenths
7 tenths + 6 tenths = 13 tenths
72 tenths - 13 tenths = 59 tenths or 5 and 9 tenths.
Answer:
option 5
Step-by-step explanation:
we have diameter=75 feet
we need to find the radius
radius=diameter/2
so we write
radius=75 feet/2
finally
we have
radius=37.5 feet
Consecutive angles in a parallelogram are supplementary angles which when added together equal 180 degrees.
The ratio is 7:5 so we would have:
7x + 5x = 180
Simplify:
12x = 180
Divide both sides by 12:
X = 15
So one angle is 7 x 15 = 105 degrees
The other angle is 5 x 15 = 75 degrees
An obtuse angle is an angle greater than 90 degrees.
The obtuse angle would be 105 degrees.
(-2 1/2)×(-3 1/2) = (2 1/2)×(3 1/2) . . . . deal with the signs up front. The product of two negatives is a positive.
... = 2×(3 1/2) + (1/2)×(3 1/2) . . . . . use the distributive property
... = 2×3 + 2×(1/2) + (1/2)×3 + (1/2)×(1/2) . . . . and again
... = 6 + 1 + 3/2 + 1/4
... = 7 + (1 1/2) + 1/4
... = 8 + 2/4 + 1/4
... = 8 3/4
_____
On your calculator, -2.5 × -3.5 = 8.75.