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Lesechka [4]
3 years ago
5

Can someone confirm this? is it correct?

Mathematics
1 answer:
EastWind [94]3 years ago
8 0
<span>60 Sorry, but the value of 150 you entered is incorrect. So let's find the correct value. The first thing to do is determine how large the Jefferson High School parking lot was originally. You could do that by adding up the area of 3 regions. They would be a 75x300 ft rectangle, a 75x165 ft rectangle, and a 75x75 ft square. But I'm lazy and another way to calculate that area is take the area of the (300+75)x(165+75) ft square (the sum of the old parking lot plus the area covered by the school) and subtract 300x165 (the area of the school). So (300+75)x(165+75) - 300x165 = 375x240 - 300x165 = 90000 - 49500 = 40500 So the old parking lot covers 40500 square feet. Since we want to double the area, the area that we'll get from the expansion will also be 40500 square feet. So let's setup an equation for that: (375+x)(240+x)-90000 = 40500 The values of 375, 240, and 90000 were gotten from the length and width of the old area covered and one of the intermediate results we calculated when we figured out the area of the old parking lot. Let's expand the equation: (375+x)(240+x)-90000 = 40500 x^2 + 375x + 240x + 90000 - 90000 = 40500 x^2 + 615x = 40500 x^2 + 615x - 40500 = 0 Now we have a normal quadratic equation. Let's use the quadratic formula to find its roots. They are: -675 and 60. Obviously they didn't shrink the area by 675 feet in both dimensions, so we can toss that root out. And the value of 60 makes sense. So the old parking lot was expanded by 60 feet in both dimensions.</span>
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Excise duty thus this type of tax is paid on goods sold
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What is 85/20 simplified ​
inessss [21]

Answer: 4 1/4

Step-by-step explanation: 85 divided by 20 is 4.25

6 0
2 years ago
Read 2 more answers
Question 1 (Essay Worth 10 points)
FromTheMoon [43]

The equation 7x + 3x - 18 = 6(x+3) is 9

<h3>What is equation?</h3>

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

given:

7x + 3x - 18 = 6(x+3)

7x + 3x - 18 = 6x+18      [Distributive Property]

10x-18= 6x+18               [Addition Property of Equality]

10x-6x= 18+18               [Combine Like Terms ]

4x=36                            [Subtraction Property of Equality]

4*x=36                            [Multiplication Property of Equality]

x=36/4                           [Division Property of Equality]

x=9

Learn more about equation here:

brainly.com/question/10413253

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8 0
2 years ago
Please answer dis question
Ymorist [56]

Answer:

1

Step-by-step explanation:

A = 4

B = 5

Theres a 1 number diffrence.

(sorry if its wring its 12am im tired-

3 0
2 years ago
Kaylee invested $860 in an account paying an interest rate of 6 1/8% compounded annually. Gabriel invested $860 in an account pa
gogolik [260]

Answer:

$2415

Step-by-step explanation:

Compound interest :

A = P(1 + r/n)^nt

n = number of compounding times per period

A = final amount ; P = initial investment

For account compounded continuously :

A = Pe^it

i = interest ; t number of years ;

Gabriel:

P = $860 ; i = 6 1/2 % = 13/2% = 0.065

When P triples ; A = 860 * 3 = 2580

2580 = 860*e^0.065t

2580/860 = e^0.065t

3 = e^0.065t

Take In

In(3) = 0.065t

1.0986122 = 0.065t

t = 1.0986122 / 0.065

t = 16.90 years

Kaylee's account at t = 16.90 years

Number of months = 16. 9 * 12 = 202.8 = 203

Rate = 6 1/8% = 6.125% = 0.06125

A = 860(1 + 0.06125 / 12)^202.8

A = 860(1 + 0.0051041) ^202.8

A = 860(1.0051041)^202.8

A = 860 * 2.8080176

A = 2414.8951

A = $2415

5 0
3 years ago
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