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iogann1982 [59]
3 years ago
14

15 POINTS PLEASE HELP

Mathematics
1 answer:
qwelly [4]3 years ago
4 0

Answer:

A, r=9

Step-by-step explanation:

Multiply through by the LCM

r + (3×5) <= 3×8

r + 15 <= 24

r <= 24 - 15

r <= 9

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1. Determine the quadrant in which a 171° angle lies.
Svetradugi [14.3K]

A angle that is 171° will be in the 2nd quadrant

6 0
4 years ago
Given the function f(x) = -5x2 +4, what is the value of f(-5)?
Akimi4 [234]

Step-by-step explanation:

f(-5)=-5(-5)²+4

f(-5)=5(25)+4

f(-5)=125+4

f(-5)=129

8 0
3 years ago
HELP ME PLZ !!! IT'S ALGEBRA
Drupady [299]

Answer:

x = - 8/23

y = 40/23

Step-by-step explanation:

-5x- y = 0

and

-8x+3y = 8

The first step to solve this would be to get what one of the two variables equal. The easiest in this case is y from the first equation.

-5x-y = 0

-y = 5x

y = - 5x

Now you can take this y value and plug it into the section equation.

-8x + 3(-5x) = 8

-8x - 15x = 8

-23x = 8

x = - (8/23)

Once you get the x value you can plug it back into equation one to get y's value

-5*-(8/23)  - y = 0

40/23 - y = 0

y = 40/23

3 0
3 years ago
Given f(x) = the quantity of x plus 7, divided by 5, solve for f−1(3)
Debora [2.8K]
<span>f(x) = the quantity of x plus 7, divided by 5f(x)= \frac{x+7}{5}


</span>

To get the inverse of any function f(x) [ just make sure that it passes the horizontal line test] follow the steps:

- Solve for x, i.e separate x in one side and the other terms in the other side, included f(x).

- Swap x and f(x).

- The result is the inverse of the original function f^{-1}(x)



So that:

5*f(x)=x+7\\~\\~\\5f(x)-7=x\\~\\~\\Swap~now\\~\\~\\f^{-1}(x)=5x-7



and for the value of 3:

f^{-1}(3)=5(3)-7=15-7=8


I hope that helps!




6 0
4 years ago
Read 2 more answers
Jane is opening a savings account with an initial deposit of $100. The bank offers a 5%
yKpoI14uk [10]

Answer:

105 dollars after a year

Step-by-step explanation:

I = (100)(0.05)(1)

I = 5

4 0
3 years ago
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