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soldier1979 [14.2K]
3 years ago
12

Suppose x and y vary directly, and x = 8 when y = 80. write an equation to model the variation.

Mathematics
1 answer:
AfilCa [17]3 years ago
3 0
++++807889486836373737
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Math question! Thanks if you help
grandymaker [24]

Answer:

pythagoras theorem

a^2+b^2=c^2

so we have a and b

12 and 9

so ... 12^2+9^2 = 225

take the square root to find c, since 225 is c^2

so √225 = c = 15

7 0
3 years ago
Read 2 more answers
Determine the x-intercept and y-intercept of the line
Marizza181 [45]

Step-by-step explanation:

step 1. the x intercept is when y=0.

step 2. 2x -5(0) = 20 or x = 10.

step 3. the x intercept is (10, 0)

step 4. the y intercept is when x=0.

step 5. 2(0) - 5y = 20 or y = -4

step 6. the y intercept is (0, -4).

3 0
3 years ago
The number 1000 has _____ factors of 10
Gala2k [10]

Answer:

1,2,4,5,8,10,20,25,40,50,100,125,200,250,500,1000

Step-by-step explanation:

7 0
3 years ago
If an investor has a $5000 pre-tax return the state tax rate is 4.5% in the federal tax rate is 22% what is the real investment
Bezzdna [24]

<u>Answer:</u>

The real investment value is $3,675

<u>Step-by-step explanation:</u>

<u>Given:</u>

Pre-tax return = $5000

State tax rate = 4.5%

Federal tax rate =  22%

<u>To Find:</u>

The real investment value = ?

<u>Solution:</u>

The pre-tax return is simply the average annual compound (annualized) rate of return the fund has earned before accounting for any taxes.

The federal income tax is the tax levied by the United States Internal Revenue Service (IRS) on the annual earnings of individuals, corporations, trusts, and other legal entities.

Total tax = State tax rate + Federal tax rate

Total tax = 4.5% + 22%

Total tax = 26.5%

26.5 % of $5,000

=> 26.5 \frac {1}{100} \times  $5,000

=> \frac {26.5}{100} \times  $5,000

=>0.265 \times  $5,000

=>$1,325

Now

$5,000 - $1,325 = $3,675

4 0
3 years ago
PLEASE HURRY!! -2n=24 WHAT IS N?
Alja [10]

Answer:

n = -12

Step-by-step explanation:

plug -12 in for n and its -2 x -12 which equals 24

7 0
3 years ago
Read 2 more answers
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