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3 years ago

PLS HELP DUE TODAY i will give brailest if you show all work please help

Mathematics

2 answers:

Fittoniya [83]3 years ago

8 0

Answer:

15) 3(4+r)=-18

3x4+3xr

12+3r= -18

-12 -12

3r= -30

/3 /3

r= -10

Step-by-step explanation:

distribute the 3 to the 4 and the r you should then have 12+3r=-18 and so subtract from both sides 12 and you should have 3r=-30 divide both sides by 3 and you get your answer r=-10

ivanzaharov [21]3 years ago

5 0

Answer:

(7) n=9

8) x=8

9) m=-7

10) b= -6

11) r=6

12)b=10

13)v=8

14)k=-8

15)r=-10

16)p=20

17)v=10

18)x=21

19)a=28

20)b=10

Step-by-step explanation:

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You went to the mall with $80 you spent 25% of your money on a pair of shorts and 65% of the remainder on sandals how much did y

Contact [7]

25% of $80=$20
$80-$20=$60 remaining after you purchased shorts
65% of %60=$39

Answer: Sandals cost $39.00

6 0

4 years ago

Does each function describe exponential growth or decay?

Aleksandr [31]

<h3>Answer: Only first two are exponential growth function and last three functions are exponential decay functions.</h3>

Step-by-step explanation: We need to describe exponential growth or decay for the given functions.

The standard exponential function equation is

$y=a(b)^x$ .

Where a is the initial value and b is the growth factor.

Note: If value of b > 1, it would be an exponential growth and if b < 1, it would be an exponential decay.

Let us check them one by one.

$y=(1.008^{1/12}})^{12t}$ => $y=(1.008^})^{1/12\times{12t} }$

=> $y= (1.008)^t$ .

Value of b is 1.008 > 1, therefor it's an exponential growth function.

y=250(1+0.004)^t, also have b>1 therefor it's an exponential growth function.

All other functions has b values less than 1, therefore only first two are exponential growth function and last three functions are exponential decay functions.