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goblinko [34]
3 years ago
14

3x-4y=8 18x-5y=10 What is the answer to this

Mathematics
1 answer:
trapecia [35]3 years ago
7 0

Answer:

x=0;y=-2

Step-by-step explanation:

multiply first equation by 6: 18x-24y=48

Subtract 2nd equation from 1st: -19y=38

y=-2

Sub into 1st equation: 3x-4(-2)=8

3x+8=8

3x=0

Therefore, x=0;y=-2

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Help please, thanks in advance
ycow [4]

Answer: Philip can earn back his initial investment in 12.4 years


Step-by-step explanation:


Amount Invested by Philips in period annuity = 800,000

Annual Percentage Rate (APR) = 5.2%

APR compounded monthly for a period of 20 years.


Amount to be received per annuity period = 800,000 * (((1+(0.052/12))^240)*(0.052/12))/(((1+0.052/12))^240)-1)

= 5368.43


Time taken ( in months ) by Philip to earn back his initial investment = 800,000/5368.43 = 149.02 months



Time taken ( in years ) by Philip to earn back his initial investment = 149.02/12 = 12.4 years


Hope it helps.

Thank you :)



5 0
2 years ago
Need help solving this problem down below.​
Veronika [31]

Answer:

1 / We have the area of a rectangle ABCD = 8 x 16 = 128 ft²

2 / Find the area of an isosceles Δ DEF:

The base of the isosceles ΔDEF => DF = DC- FC = 16 -12 = 4 ft

So the area of Δ DEF = 1/2 (DF x EH) = 1/2 (4 x 6) = 12 ft²

3 / Area of the irregular shape = area ABCB + Area DEF = 128 + 12 = 140 ft²

Step-by-step explanation:

3 0
2 years ago
Lin's family has completed 60% of a trip. They have traveled 30 miles. How long is the whole trip?
tatiyna
This one’s easy if you know how to do the fractions of 5.

The whole trip is 50 miles because 60% of 50 is 30 miles.

3/5 = 0.6
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2 years ago
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White raven [17]

Answer:

A

Step-by-step explanation:

6 0
2 years ago
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Elaina just began working as an occupational therapist assistant for $21.00 per hour. For each paycheck she receives, 12% is ded
lora16 [44]

Answer:

Elaina just began working as an occupational therapist assistant for $21.00 per hour. For each paycheck she receives, 12% is deducted from the gross pay for Federal Withholding Tax. In addition, 1.45% is deducted for Medicare and 6.2% for Social Security. Below is Elaina’s paycheck with missing information.

Elaina’s gross pay for a two week period is $1680.00, what is her net pay?

Step-by-step explanation:

c

3 0
2 years ago
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