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3 years ago

Help me asap I don’t know what to do

Mathematics

1 answer:

sattari [20]3 years ago

3 0

Answer:

J 8.5 >=2.5p

Step-by-step explanation:

To do this plug in 3.4 for each version of p. The only one that would be true would be J.

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How many posible solutions for x-3y=-3 and -2x+6y=12

Alexus [3.1K]

Answer:

there are no solutions

Step-by-step explanation:

x-3y=-3

-2x+6y=12

multiply the first equation by 2

2( x-3y)=-3*2

2x-6y = -6

add the 2 equations together

2x-6y = -6

-2x+6y=12

-------------------

0 = -6

this is not true

so there are no solutions

7 0

3 years ago

An experiment consists of choosing objects without regards to order. Determine the size of the sample space when you choose the

sdas [7]

Answer:

$n= 75, 582$

$n= 2300$

$n = 253$

Step-by-step explanation:

Generally the size of the sample sample space is mathematically represented as

$n = \left N } \atop {}} \right. C_r$

Where N is the total number of objects available and r is the number of objects to be selected

So for a, where N = 19 and r = 8

$n = \left 19 } \atop {}} \right. C_8 = \frac{19 !}{(19 - 8 )! 8!}$

$= \frac{19 *18 *17 *16 *15 *14 *13 *12 *11! }{11 ! \ 8!}$

$n= 75, 582$

For b Where N = 25 and r = 3

$n = \left 25 } \atop {}} \right. C_3 = \frac{25 !}{(19 - 3 )! 3!}$

$= \frac{25 *24 *23 *22 ! }{22 ! \ 3!}$

$n= 2300$

For c Where N = 23 and r = 2

$n = \left 23 } \atop {}} \right. C_2 = \frac{23 !}{(23 - 2 )! 2!}$

$= \frac{23 *22 *21! }{21 ! \ 3!}$

$n = 253$

4 0

3 years ago

PLEASE HELP ME HERE 40 PTS

mojhsa [17]

Answer: its b because once u simplify everything it amounts to b

4 0

3 years ago

Which expression is equivalent to x 2 - 17x - 60?

creativ13 [48]

Answer:

(x-20)(x+3)

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Solve the system by substitution.<br> y= 2x2 – 3x-1<br> Y=x-3

mr Goodwill [35]

Answer:

x=0 or no solution?

Not sure tbh

Step-by-step explanation:

6 0

3 years ago