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Inga [223]
3 years ago
13

A strip of wood 78 inches long is to be cut into pieces 3 3/4 inches long. How many pieces can be cut?. . A. 12. B. 26. C. 20. D

. 21.
Mathematics
2 answers:
mafiozo [28]3 years ago
6 0
20 A strip of wood 78 inches long can be cut into 20 3 3/4 inch pieces. (78/3.75 = 20.8 Since you can't have a .8 piece of wood, the answer is 20)
nika2105 [10]3 years ago
5 0
The whole length of wood is measured to be 78 inches. It is to be cut into smaller pieces measuring 3 (3/4) or 3.75 inches long. To calculate how many pieces the strip of wood can be cut, we divide 78 into the smaller measurement.

78 / 3.75 = 20.8 or 21

Therefore, the correct answer is option D, 21.
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The probability that a lab specimen contains high levels of contamination is 0.15. A group of 4 independent samples are checked.
Lady bird [3.3K]

Answer:

0.5220

Step-by-step explanation:

Since the probability of contamination is 0.15, the probability of no contamination is 1 - 0.15 = 0.85

The probability that they are all contaminated will be 0.85 * 0.85 0.85 * 0.85 = 0.52200625

This is 0.5220 to four decimal

5 0
3 years ago
A toy company intends to ship out its entire stock of 10,254 toy trucks, and three times as many toy cars. If each box holds 35
svetoff [14.1K]
There are 10,254 toy trucks

and 10,254 * 3 = 30,762 toy cars.

In total, there are 10,254+30,762= 41,016 toys 

when we divide 41,016 by 35, the quotient is the number of the full boxes, and the remainder is the number of toys left.

41,016=35*1171+31


Answer: 1171 full boxes, 31 toys left for the last box
6 0
3 years ago
Determine f(-1) if the graph of f(x) is given below.
-BARSIC- [3]

Answer:

f(-1) = -2

Step-by-step explanation:

Given

The attached graph

Required

f(-1)

This is the point where

x = -1

On the attached graph;

f(x) = -2 when x = -1

Hence:

f(-1) = -2

8 0
3 years ago
1) Simplify the following expressions: a) sin²108° + sin² 18° ​
abruzzese [7]

Note that

108° = 90° + 18°

so

sin(108°) = sin(90° + 18°) = sin(90°) cos(18°) + cos(90°) sin(18°) = cos(18°)

Then

sin²(108°) + sin²(18°) = cos²(18°) + sin²(18°) = 1

by the Pythagorean identity.

8 0
2 years ago
I need help please ?!!!!
Alecsey [184]

Answer:

89

Step-by-step explanation:

= √ 64 +9²

=8 +81

=89

7 0
3 years ago
Read 2 more answers
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