All categories

3 years ago

У varies inversely as x, and y = 45 when x = 7

1 answer:

6 0

Answer: -2

Step by step Explanation: y=k/x

Replace y with 7 and x with -2

7=k/-2 gives you -14

then you replace k with -14 and x with 7

Y=14/7 gives you -2

You might be interested in

Help this is due today

RoseWind [281]

Answer:

m = $\frac{-3}{4}$

Step-by-step explanation:

We are given two points ( -3, 1 ) and ( 1, -2).

The slope formula is m = $\frac{rise}{run}$ = $\frac{y2 - y1}{x2 - x1}$

So, we have $\frac{(-2)-(1)}{(1)-(-3)}$ = $\frac{-3}{1+3}$ = $\frac{-3}{4}$

6 0

3 years ago

Pls help 31b&c. ASAP<br> Thx

Leto [7]

Answer:

b. g(x) = 12x+10

c. x = 9/2

Step-by-step explanation:

b. g(2x+1)=6x+4

g(2x+1) = 6(2x+1)+4

g(2x+1) = 12x+6+4

g(2x+1) = 12x+10

g(x) = 12x+10

c. g(x) = 64

12x+10 = 64

12x = 54

x = 54/12

x = 9/2

5 0

3 years ago

Original price is $50, discount is 15%, what is the sale price?

SashulF [63]

Answer: 42.50

Step-by-step explanation: sale price is the price at which something sells or is sold at after its price has been reduced

3 0

3 years ago

Read 2 more answers

A cellular service provider charged a customer $40 for 150 minutes of airtime. The same provider charged another customer $55 fo

defon

Answer:

Y=10x-250

Step-by-step explanation:

We can treat this problem like we are attempting to graph a line from 2 points (hopefully you know how to do that)

the two points are (40,150)(55,300)

7 0

3 years ago

What is the probability that the reader’s favorite is Rowling given that the reader is a teen?

Stells [14]

Answer:

Probability = 0.500

Step-by-step explanation:

If it is given that the reader is a teen, we have a total of 80 readers, where 40 of those readers have Rowling as their favorite.

So the probability that the reader's favorite is Rowling given that the reader is a teen is the number of teen readers that have Rowling as favorite (40) over the total number of teen readers (80)

Probability = 40 / 80 = 0.500

8 0

4 years ago