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salantis [7]
3 years ago
5

Solve the unknown variable

Mathematics
1 answer:
dsp733 years ago
5 0
Set measurements equal to each other.
7X + 20 = 8X + 8
-7X           -7X

20 = X + 8
-8          -8

ANSWER: X=12
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cupoosta [38]

Answer:

8.06

Step-by-step explanation:

Hope it helps

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(time limit!) what is the volume below?<br><br>A) 112 <br>B) 224 <br>C) 784 <br>D) 896
Radda [10]
To find a volume of a cylinder we use the following formula:
v = \pi {r}^{2} h
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8 0
3 years ago
Hich values are solutions to the inequality?
Troyanec [42]

2r\leq3r-8\\0\leq r-8\\8\leq r\\r\geq8

So, in the list of numbers, 8 and 9 are solutions

7 0
3 years ago
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Kayla has $50 Nina has $80 in how many months will they both have the same amount of money if Kayla saves $50 per month and Nina
Zarrin [17]
Well first you need to make a graph and add how many months on the side and multiply until you get to the according amount of months hope this helps
8 0
3 years ago
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Alice is buying a house with 625K. She is making 20% deposit. And get a mortgage on the balance.A bank offers her two options.
dem82 [27]

Answer:

By opting for the second option, Alice would save $ 15,740.00  in total mortgage cost

Step-by-step explanation:

In order to determine the better of the two options available, we need to determine the total cost under each option as follows:

Option 1:

cost of house=$625,000

loan amount=$625,000-(20%*$625,000)=$500,000

loan amount=monthly payment*(1-(1+r)^-n/r

monthly payment is the unknown

r=monthly interest rate=4%/12=0.33333333%

n=number of monthly payments in 30 years=30*12=360

500,000=monthly payment*(1-(1+0.33333333% )^-360/0.33333333%

500,000=monthly payment*(1-0.301795869 )/0.003333333

500,000=monthly payment*0.698204131 /0.003333333

monthly payment=500,000*0.003333333 /0.698204131

monthly payment=$ 2,387.08  

total monthly payments=$ 2,387.08*360=$859,348.80

Option 2:

upfront fee=$10,000

loan amount=monthly payment*(1-(1+r)^-n/r

monthly payment is the unknown

r=monthly interest rate=3.75%/12=0.3125%

n=number of monthly payments in 30 years=30*12=360

500,000=monthly payment*(1-(1+0.3125%  )^-360/0.3125%

500,000=monthly payment*(1-0.325222459  )/0.003125

500,000=monthly payment*0.674777541  /0.003125  

monthly payment=500,000*0.003125  /0.674777541=$2,315.58  

Total cost=total monthly payments+upfromt fee

total cost=($2,315.58 *360)+$10,000=$843,608.80  

savings by opting for the second option=$859,348.80-$843,608.80  

4 0
3 years ago
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