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3 years ago

A phone is on sale for 40% off the original price is $550 what price will you pay

Mathematics

1 answer:

Leni [432]3 years ago

3 0

Answer:

$330

Step-by-step explanation:

40% of $550 is $220

$550 - $220 = $330

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Select the correct answer.<br> Rewrite the following equation as a function of x.

ivolga24 [154]

Option B:

$${f(x)}=9280-20x$

Solution:

$$\frac{1}{16} x+\frac{1}{320} y-29=0$

$$\frac{1}{16} x+\frac{1}{320} y-\frac{29}{1} =0$

Take LCM of the denominators and Make the denominators same.

LCM of 16, 320, 1 = 320

$$\frac{1\times20}{16\times20} x+\frac{1}{320} y-\frac{29\times 320}{1\times 320} =0$

$$\frac{20}{320} x+\frac{1}{320} y-\frac{9280}{320} =0$

All the denominators are same, so you can write in one fraction.

$$\frac{20x+y-9280}{320}=0$

Do cross multiplication.

$${20x+y-9280}=0\times 320$

$${20x+y-9280}=0$

Add 9280 on both sides of the equation.

$${20x+y}=9280$

Subtract 20x on both sides of the equation.

$${y}=9280-20x$

Let y = f(x).

$${f(x)}=9280-20x$

Hence Option B is the correct answer.

6 0

4 years ago

3x^2-4x+1, match the following

il63 [147K]

Answer:

x = variable

3 = coefficient

1 = constant

3x^2-4x+1 = algebraic expression

2 = degree

Step-by-step explanation:

variables are typically the letters in equations (usually x and y)

coefficients are the numbers attached to the variables

constants don't have any variables attached

algebraic expressions are the full expression

degrees are the small numbers in the top right corners on either constants, variables or coefficients

Hope this helps!

8 0

3 years ago

In a recent year, the top-selling cookie in America was Nabiscos Chips Ahoy, with sales of $294.6

Inessa05 [86]

Answer:

9.43%

Step-by-step explanation:

Divide the Chips Ahoy sales by the total sales, then multiply by 100

(294.6/3,124) x 100

= 9.43%

So, 9.43% of the total cookie sales were from Chips Ahoy

7 0

4 years ago

Read 2 more answers

Software to detect fraud in consumer phone cards tracks the number of metropolitan areas where calls originate each day. It is f

DIA [1.3K]

Answer:

the probability that the user is fraudulent is 0.00299133

Step-by-step explanation:

Let be the events be:

G: The user generates calls from two or more areas.

NG: The user does NOT generate calls from two or more areas.

L: The user is legitimate.

F: The user is fraudulent.

The probabilities established in the statement are:

$P (G | L) = 0.01//P (G | F) = 0.30//P (F) = 0.0001//P (L) = 0.9999//$

With these values, the probability that a user is fraudulent, if it has originated calls from two or more areas is:

$P (F|G) = \frac{P(F\bigcap G)}{P(G)} = \frac{P(F)P(G|F)}{P(G)} = \frac{P(F)P(G|F)}{P(F)P(G|F)+P(L)P(G|L)}$

$\frac{(0.0001)(0.30)}{(0.0001)(0.30)+(0.9999)(0.01)} = 0.00299133$

4 0

3 years ago

Marcus is observing bacteria multiply.every 15 seconds,there are 10 times more bacteria than before.if there are 10 bacteria now

r-ruslan [8.4K]

No he is wrong there will be 150000000 bacteria on it at 2 minutes

WORK:

2 min=120 sec
120 divided by 15=8
15 times 10 (7 times)
u get 150,000,000

8 0

3 years ago