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Alex73 [517]
3 years ago
8

What is the reciprocal of 2/7? A. - 3 1/2 B. - 2/7 C. 5/7 D. 3 1/2

Mathematics
1 answer:
vaieri [72.5K]3 years ago
4 0
The answer is B. The actual reciprocal is 7/2, since the answer means isn't there its means the reciprocal of the negative or positive sign
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A construction crew is placing a square in a wall for a new window. The window is 3 1/8 feet wide. The wall has a length of 11 3
Sedbober [7]

Answer:

The window should be positioned 4 1/8 feet far from each edge of the wall.

Step-by-step explanation:

Since a construction crew is placing a square in a wall for a new window, which is 3 1/8 feet wide, while the wall has a length of 11 3/8 feet, and the crew wants to position the window at the center of the wall, to determine how far from each edge of the wall should the window be positioned, the following calculation must be performed:

1/8 = 0.125

3/8 = 0.375

(11,375 - 3,125) / 2 = X

8.25 / 2 = X

4.125 = X

Therefore, the window should be positioned 4 1/8 feet far from each edge of the wall.

3 0
2 years ago
Divide (-2x-3+8x^2) by (1 + 4x)
Strike441 [17]

Answer:

8x^2-2x-3/1+4x

Step-by-step explanation:

It doesn't say any of your answers but i just used a calculator and that's what i got

Sorry if its wrong

8 0
3 years ago
Jerry has $558 to spend on dining room chairs. if each chair costs $58, does he have enough to purchase nine chairs
netineya [11]

Answer:

No because the chairs would have to be the price of $62.00

Step-by-step explanation:

divide 558 by 9

so if the chairs had been 62 dollars then he would have enough

4 0
3 years ago
Ashley needs to buy some pencils. Brand A has 20 pencils for $6. Brand B has 40 pencils for $8.50. Based on the unit price, whic
Kruka [31]

Answer:

The answer to your question is Brand B

Step-by-step explanation:

Data

Brand A   amount of 20 pencils     cost $6

Brand B   amount of 40 pencils     cost $8.5

Process

1.- Calculate the unit price of each brand of pencils dividing the cost by the number of pencils

Brand A      6/20 = $0.3

Brand B      8.5/40 = $0.21

2.- Conclusion

Brand B is a better deal because you buy more pencils for a lower price.

3 0
3 years ago
What are the measures of Angles a, b, and c? Show your work and explain your answers.
labwork [276]
∠a is 35° because of vertical angle congruence. ∠b is 55° because one angle is right, so the other two have to add up to 90°, and 90°-35°=55°. ∠c is 110° because it creates a straight angle (180°) with the 70° angle, and 180°-70°=110°.
7 0
3 years ago
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