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Maslowich
2 years ago
14

Which equations may be used to determine the 3 consecutive integers whose sum is 127?

Mathematics
1 answer:
s344n2d4d5 [400]2 years ago
7 0

Answer:

a and b.

Step-by-step explanation:

I’ll explain by giving an example.

Let’s say that: a=3;b=4;c=5; => they all are consecutive -> their sum is 12.

=> if we use a) n=3 => 3*n+3=3*3+3=12 => correct.

b) n+(n+1)+(n+2)= 3+4+5=12=> correct.

c)n+2n+3n=3+6+9=18=>incorrect.

d)3n=3*3=9=>incorrect.

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Alex the electrician needs 34 yards of electrical wire to complete his job. He has a coil of wiring in his workshop. The coiled
bogdanovich [222]

Answer: This coil will not be enough to complete the job.

Step-by-step explanation:

The circumference of the coil of wiring can be calculated with:

C=2\pi r

Where r is the radius and \pi=3.14

The radius can be calculated by dividing the diameter by 2. Then:

r=\frac{18in}{2}\\\\r=9in

Convert 9 inches to yards (1 yard=36 inches):

(9in)(\frac{1yd}{36in})=0.25yd

Substitute this radius into the formula:

C=2(3.14)(0.25yd)\\C=1.57yd

Since there are 21 circles of wire, you need to multiply C=1.57yd by 21:

C_T=(1.57yd)(21)=32.97yd

The coil has 32.97 yards of wire and Alex needs 34 yards, therefore, this coil will not be enough  to complete the job.

8 0
3 years ago
Can anyone help me with the senders from this page
Dovator [93]

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5 0
3 years ago
-3/4 x (-10/9)<br><br> A. 27/40<br> B. 5/6<br> C. -27/40<br> D. -5/6
Alexeev081 [22]

Answer: B

Step-by-step explanation:

1. Multiplying two negatives equals a positive.

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3. Reduce the numbers with the greatest common factor, 2.

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3 0
3 years ago
Read 2 more answers
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Furkat [3]
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