3 years ago

Please help me it would be greatly appreciated

Mathematics

1 answer:

zvonat [6]3 years ago

6 0

Answer:

a and f

Step-by-step explanation:

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rearrange into quadratic form ax^2+bx+c=0. . 0.20= x^2/(25-x). . where a=1, and identify values of b and c

vivado [14]

Simplifying 0.20 = x^2 / (25 - x):

Multiply both sides by (25 - x)
0.20(25 - x) = x^2

Distributing 0.20:
5 - 0.20x = x^2

Placing all equations on to one side:
x^2 + 0.20x - 5 = 0

Where:
a = 1
b = 0.20
c = -5

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4 years ago

Which of the following is a solution of y + x < -5?

Setler79 [48]

Answer:

FIRST OPTION: (-4, -2)

Step-by-step explanation:

Given the inequality $y + x < -5$ , substitute each solution given in the options:

1) For (-4, -2) :

$(-2)+ (-4) < -5$

$-6 < -5$ (This is true)

2) For (-3, -2):

$(-2)+ (-3) < -5$

$-5 < -5$ (This is not true)

3) For (-2, -3):

$(-3)+ (-2) < -5$

$-5 < -5$ (This is not true)

4) For (-1, -3):

$(-3)+ (-1) < -5$

$-4 < -5$ (This is not true)

You can observe that (-4, -2) is a solution of $y + x < -5$

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3 years ago

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Your cellphone plan gives you 500 minutes monthly. If you have used 310 minutes already and there is a week left this month, how

Nitella [24]

In this case, you already used 310 minutes out of 500 minutes monthly. So the remaining time for your cell phone should be: 500 minutes -310 minutes= 190 minutes.
You still have 1 week this month, that means the 190 mins time must be divided into 1 week or 7 days. Then the duration you of cell phone use for each day should be: 190 minute/7days= 27.14 minutes/day

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Simplify 1 - 3s - s + 8 - 2

KonstantinChe [14]

Step-by-step explanation:

first you group like terms.

-3s-s+8+1-2

-4s+7

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3 years ago

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