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3 years ago

Need help ASAP :) Question on the picture:)

Mathematics

1 answer:

Sergio039 [100]3 years ago

3 0

Answer:

a. No

b. Yes

Step-by-step explanation:

x - 4 = 12

x - 4 + 4 = 12 + 4

x = 16

16 ≠ 8

Therefore, the following value given for problem a is not a solution to the given equation.

b. (3 + x)/4 = 3

(3 + x)/4 * 4 = 3 * 4

3 + x = 12

3 + x - 3 = 12 - 3

x = 9

9 = 9

Therefore, the following value given for problem b is a solution to the given equation.

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P=b+4a+c, solve for b

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First subtract the C to move it to the other side

c-P=b+4a

Then subtract the 4a as well

4a-c-p=b

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On a coordinate plane, the points are (3, 1), (6, 2), (8, 3), (12, 4).

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Answer:

it would be 8 to 3

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Step-by-step explanation:

the reason why is because of this

3, 6, 9, 12.

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3, 6, <em>8, </em>12.

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2018 copper penny struck at the Philadelphia mint in 1794 was sold for 345000 rate of return

vodomira [7]

Answer:

The rate of return is 8%.

Step-by-step explanation:

The time span from 1794 to 2018 is (2018 - 1794) = 224 years.

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4 years ago

Zane received a quote to move his belongings to his new house. The estimate from

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Answer:

packing: $50 per hour
loading: $75 per hour
packing LCM: 12; loading LCM: 15

Step-by-step explanation:

We can let P and L represent the hourly costs of packing and loading, respectively. The two estimates can be represented by the equations ...

6P +5L = 675

4P +3L = 425

The LCM of the coefficients of P is LCM(6, 4) = 12.

The LCM of the coefficients of L is LCM(5, 3) = 15.

Each LCM is the product of the numbers, divided by their greatest common factor. For 4 and 6, the product is 24, and both even numbers have a factor of 2, so the LCM of 4 and 6 is 24/2 = 12. The numbers 3 and 5 have no common factors, so the LCM is simply their product.

_____

The LCM is useful if you're going to solve the equations by "elimination". Here, the LCM of 12 means we can eliminate P by making its coefficient be 12 in both equations. Multiplying the first equation by 2, we can subtract 3 times the second equation to eliminate P:

2(6P +5L) -3(4P +3L) = 2(675) -3(425)

12P +10L -12P -9L = 1350 -1275

L = 75 . . . . . simplify

Similarly, we can eliminate L by making its coefficients be 15.

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20P +15L -18P -15L = 2125 -2025

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Answer:

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