Answer:
a. 3 times the sum of a number and 3 equals 9
b. 5 less than the product of 4 times a number equals 11
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Answer:
15/4, or 3.75
Step-by-step explanation:
all i really did was plug it into the calculator like so: (3/4)/(1/5) and thats what came out
Answer:
= (- 475)
Step-by-step explanation:
Given:
(-5) × (-5) × ... × (-5) = (-5)95
Find:
Sign of the product
Computation:
(-5) × (-5) × ... × (-5) = (-5)95
= (- 475)
No, it is not compulsory to do all calculation to find sigh of product
Negative number × odd time = Negative number
Negative number × even time = Positive number number
Answer:
22.5 cm
Step-by-step explanation:
P = 2( L + W)
P = 2( 7.5 + 3.75)
P = 2( 11.25)
P = 22.5 cm
Answer:
0.14 lb . . . closest choice is 0.11 lb
Step-by-step explanation:
The inside and outside radii are 1/8 in and 3/8 in, respectively. Then the area of the top of the washer is ...
A = π(R² -r²) = π((3/8)² -(1/8)²) = π(9/64 -1/64) = π/8 . . . square inches
The height of the stack of 5 washers will be 5×(1/4 in) = 5/4 in. So, the volume of material in the stack of washers is ...
V = Bh = (π/8)(5/4) = 5π/32 . . . cubic inches
The weight of material is the product of volume and density, so is ...
W = (5π/32 in³)(0.285 lb/in³) ≈ 0.1399 lb ≈ 0.14 lb
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<em>Comment on the question</em>
Since this answer does not correspond to any of the offered choices, we suggest you ask your teacher to work this out for you. We suspect they will have difficulty justifying any of the answer choices shown here. (0.11 lb corresponds to 4 washers, not 5.)
