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3 years ago

At the end of January, Garrett had $176 in his

Mathematics

1 answer:

VikaD [51]3 years ago

4 0

Answer:

bank account cant give me 5 bank name

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A gallery owner bought a painting for 3,000 dollars. The painting sells at a 325% increase in price. What is the retail price of

rewona [7]

$3000* (\frac{325}{100} + \frac{100}{100} )=3000*4,25=12750$

5 0

3 years ago

A swimming pool had

Alinara [238K]

I believe your answer is 75 percent but i’m not 100 percent sure

8 0

2 years ago

What was the original price if: after 10% discount it becomes $450?

steposvetlana [31]

100-10=90

450=90% of original find 100%
divide by 9
50=10%
times 10
500=100%
origianl price=$500 (this is the hack way that only works with nice numbers)

7 0

3 years ago

Read 2 more answers

A pole is 3.4 m tall casts a shadow that is 1.8 m long. At the same time, a nearby tower casts a shadow that is 39.75 m long. Ho

KATRIN_1 [288]

Answer:

Step-by-step explanation:

For this, you need to solve a proportion-

3.4 x

----- = -----

1.8 39.75

3.4*39.75=135.15

135.15/1.8= 75.0833.....

75.0833.. is rounded to 75

7 0

3 years ago

What are the exact solutions of x2 − 5x − 1 = 0 using x equals negative b plus or minus the square root of the quantity b square

geniusboy [140]

Answer:

$x=2.5+\frac{\sqrt{29}}{2}\\\\x=2.5-\frac{\sqrt{29}}{2}$

Step-by-step explanation:

So the question here is asking you to use the quadratic formula which is expressed as: $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\$

A quadratic can generally be expressed as: $y=ax^2+bx+c$

So using the equation you gave: $0=x^2-5x-1$

We can identify the following values: a=1, b=-5, c=-1

Btw the equation explicitly write "1" as the coefficient of x, but since it's not provided it's implied that it's 1.

So plugging in the known values, we get the following equation:

$x=\frac{5\pm\sqrt{(-5)^2-4(1)(-1)}}{2(1)}\\\\x=\frac{5\pm\sqrt{25+4}}{2}\\\\x=\frac{5\pm\sqrt{29}}{2}\\\\x=2.5+\frac{\sqrt{29}}{2}\\\\x=2.5-\frac{\sqrt{29}}{2}$

The last step just consists of taking the + and - solution, and since it asks for exact solutions you leave the 29 under the radical, and you don't approximate. There is no further simplification that can be done here.

5 0

1 year ago