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dolphi86 [110]
3 years ago
13

Solve the equation. −2 1/4=r−4/5 will give brainiest for the first correct answer!!!

Mathematics
1 answer:
STatiana [176]3 years ago
6 0

Answer:

r = -1 9/20

Step-by-step explanation:

-2 1/4 = r - 4/5

Switch sides:

r - 4/5 = -2 1/4

Add 4/5 to both sides.

r = -2 1/4 + 4/5

Change the mixed numeral into a fraction:

r = -9/4 + 4/5

The LCD is 20.

r = -45/20 + 16/20

r = -29/20

r = -1 9/20

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Please help me :) with this math problem, it's exponential functions.
noname [10]

Answer:

f(x) = 9(5/3)^x

Step-by-step explanation:

f(x) = a(b^x)

x = 0

9 = a(b⁰)

9 = a

f(x) = 9(b^x)

x = 1

15 = 9(b¹l

b = 15/9

b = 5/3

f(x) = 9(5/3)^x

8 0
3 years ago
Which of the aaa-values satisfy the following inequality?
mina [271]

Answer:

a = 3

Step-by-step explanation:

When you add the given value for a with 7, the resulting answer must be less than 11.

In this case, if: a = 3

Plug in 3 for a in the equation:

7 + a < 11

7 + 3 < 11

10 < 11 (True).

A) a = 3 is your answer.

~

7 0
2 years ago
The Rodriguez family and the Hill family each used their sprinklers last summer. The water output rate for the Rodriguez family'
brilliants [131]

Answer:

x = 23.33 hr    Rodriguez sprinkler

y  = 26.66 hr   Hill sprinkler

Step-by-step explanation: INCOMPLETE QUESTION

Requiered information:

the water output rate for both sprinkler families

We assume : Rodriguez family   40 lts/hr

                      Hill family   35 lts/ hr

Total water output  1900 lts

and total combined hours working is 50 hr

Let call  "x"  time in hours sprinkler of Rodriguez family worked

and "y" time in hours sprinkler of  Hill  family worked

Then if total output was 1900 lts

40*x  +  35*y  = 1900    and   x  +  y  =  50

We have a two equation system, solving

y  =  50 - x     ⇒     40*x  +  35 * ( 50 - x )

40x  =  1750 -  35x

75 x  =  1750        ⇒    x  = 1750/75          ⇒    x = 23.33 hr

and   y  =  50  -  23.33     ⇒   y  =  26.66 hr

6 0
3 years ago
What is 452 to the nearest thousand
son4ous [18]
The next larger even thousand is  1,000 .

The next smaller even thousand is zero thousands.

452  is nearer to <em>zero</em> thousand than it is to  1,000 .
5 0
3 years ago
Read 2 more answers
Find the value of f(5) for the function.<br> f(x) = 6+3x
natka813 [3]

Answer: 21

Step-by-step explanation:

This means we can substitute x=5 into f(x), so f(5)=6+3(5)=21.

6 0
2 years ago
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