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3 years ago

translate the word phrase into a variable expression. The product of a number and 5 is decreased by 2.

Mathematics

1 answer:

vladimir1956 [14]3 years ago

3 0

It would be:
5n - 2

Hope that helps :D

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Emma has half of her investments in stock paying a 9% dividend and the other half in a stock paying 11% interest. If her total a

miskamm [114]

X/2 x .09 =y
x/2 x .11= z

y + z = 420
((x/2) x .09) + ((x/2) x .11) = 420

.09x/2 + .11x/2 = 420
.2x/2= 420
.1x=420
x=4200

Plug that value back into the originals to check

4200/2 x .09 = 189
4200/2 x .11 = 231
-------
420

She invested 4200 dollars

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3 years ago

What are the solutions of x2 - 2x +17 - 0?

Oksanka [162]

Answer:

option B

Step-by-step explanation:

$x^2 - 2x + 17 = 0 \ , \ [ \ where \ a = 1 , \ b = - 2 \ c = 17 \ ]$

$x = \frac{- b \ \pm \sqrt{b^2 - 4ac}}{2a}\\\\x = \frac{2 \ \pm \sqrt{2^2 - (4 \times 1 \times 17)}}{ 2 \times 1}\\\\x = \frac{2 \ \pm \sqrt{4 - 68}}{ 2 }\\\\x = \frac{2 \ \pm \sqrt{-64}}{ 2 }\\\\x = \frac{2 \ \pm \sqrt{8^2 \times -1}}{ 2 }\\\\x = \frac{2 \ \pm \ 8\sqrt{ -1}}{ 2 }\\\\$

$x = \frac{2 \ \pm\ 8 i}{ 2 }\\\\$ $[ \ where \ i = \ \sqrt{i} \ ]$

$x = 1 \ \pm \ 4i\\\\x = 1 + 4i , \ x = 1 - 4i$

8 0

3 years ago

Read 2 more answers

What is the slope, and what is the y-intercept of the line? y= 1/2x - 5

Lorico [155]

The answer to the question

3 0

3 years ago

There are 40 nickels in every standard coin roll. What is the constant of proportionality?(Numbers only) Write an equation to re

torisob [31]

Answer:

The answer is "40 nickels/standard coins"

Step-by-step explanation:

The ratio of 40 nickels/standard coins is constant, that is 1 roll with coins per 40 nickels, that's why the equation is y = 40 $\frac{nickels}{standard \ coins}$

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3 years ago

HELP ME PLLZZZ+GOD LOVES YOU!

dlinn [17]

Answer:

40%

Step-by-step explanation:

15% + 25% = 40%

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3 years ago