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3 years ago

8

What is the ratio of the amount invested in company A to the amount invested in company B? Write the answer as a fraction using

the values given. Do not include any variables.

2 answers:

Setler [38]3 years ago

6 0

What are the various amounts for each company, we must know that first in order to solve the rest!

stich3 [128]3 years ago

3 0

The ratio of the amount invested in company A to the amount invested in company B is .

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A sweater that had 40% discount and I saved 20 dollars, what was the price of the sweater

ioda

Answer:

200

Step-by-step explanation:

200-40% = 180

if we were to have 100-40% it would be 60 but since it's 200 it is now less of a % reduced

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3 years ago

To find 40% of 75 and calculate 2 of 5 . 75 . Does her calculation Correct value for 40% of 75

pickupchik [31]

Answer:

Yes, her calculation is correct. The value of 40% of 75 is 30.

Step-by-step explanation:

The value of 40% of 75 is

$\frac{40}{100}\times 75=\frac{3000}{100}=30$

The value of $\frac{2}{5}$ of 75 is

$\frac{2}{5}\times 75=2\times 15=30$

From the above calculation it is noticed that the value of 40% of 75 and $\frac{2}{5}$ of 75 are same, therefore the calculation is correct and the value of 40% of 75 is 30.

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3 years ago

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5 less than a product of 4 and a number is equal to 6

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Answer:

4x-5=6 is the equation.

Step-by-step explanation:

What you do is look at the product part. That means multiplying.

Less than means subtraction.

Equals to means equals of course so the equation is

4x-5=6.

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3 years ago

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I have a quation about functions.

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3 years ago

Find the x- and y- intercepts of parabola y=5x^2-16x+10

____ [38]

Y-INTERCEPT

$y = 5x^2 - 16x + 10$

The y-intercept is where the equation/curve/parabola cosses the y-axis.

The y-axis is where x = 0. (The x-axis is where y = 0)

To find the y-intercept:

$\text{y-axis} \rightarrow \text{x = 0} \rightarrow y = 5(0)^2 -16(0) + 10 = 10$

The y-intercept must be at (0, 10)

X-INTERCEPT (ROOTS/SOLUTIONS)

$y = 5x^2 - 16x + 10\\\text{make it equal 0}\\y = 0\\\therefore 5x^2 - 16x + 10 = 0$

We need to use the quadratic formula

The quadratic formula helps us find what values of $x$ make the equation = 0

Quadratic formula: $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$x=\frac{-(-16) + \sqrt{(-16)^2-4(5)(10)}}{2(5)}\\\\x = \frac{16 + \sqrt{256-200}}{10}\\x = \frac{16 + \sqrt{56}}{10}\\x = \frac{16 + 2\sqrt{14}}{10}\\x = \frac{8 + \sqrt{14}}{5}\\\\\\x=\frac{-(-16) - \sqrt{(-16)^2-4(5)(10)}}{2(5)}\\\text{doing the same thing...}\\\text{end up with...}\\x = \frac{8 - \sqrt{14}}{5}\\$

The x-intercepts are at:

$(\frac{8 + \sqrt{14}}{5}, 0)\\(\frac{8 - \sqrt{14}}{5}, 0)$

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2 years ago