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Daniel [21]
3 years ago
13

Please Help....................................

Mathematics
1 answer:
vazorg [7]3 years ago
5 0
The answer are:
(-4,5)

(2,2)
 
(-1, -3)

(3,4)

(2,-1)

(-5,6)
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How much tip should you leave on a $54.50 bill if you want to tip 15%?<br> pls help
aniked [119]

Answer:

$62.68

Step-by-step explanation:

multiply 54.50 by .15

round to the nearest 100th

8 0
3 years ago
Which of the following is not a rate?<br> 35km/5 min 240miles/8 miles 95 words/1 minute 16oz/1 lb
Shkiper50 [21]

Answer:

240 miles/ 8 miles

Step-by-step explanation:

you can't measure a mile per mile (/=per)

6 0
2 years ago
(-7-3i)(11-8i)<br> Simplified into the a+bi form
shtirl [24]

Answer: what

Step-by-step explanation:

5 0
3 years ago
Exercise topic: Permutations and Combinations. A company wants to hire 3 new employees, but there are 8 candidates, 6 of them wh
SOVA2 [1]

Answer:

(a) 56 ways

(b) 6 ways

(c) 56 ways

Step-by-step explanation:

Given:

candidates: 6 mail, 1 female

number to hire : 3

a) In how many different ways can choose new employees?

use the combination formula to choose r to hire out of n candidates

C(n,r) = C(8,3) = 8! / (3! (8-3)! ) = 40320 / (120*6) = 56 ways

b) In how many different ways can choose a single male candidate?

6 ways to choose a male, one way to choose two female, so 6*1 = 6 ways

c) In how many different ways can choose at least one male candidate?

To choose at least 1 male candidate, we subtract the ways to choose no male candidates out of 56.

Since there are only two females, there is no way to choose 3 female candidates.

In other words, there are 56-0 = 56 ways (as in part (a) ) to hire 3 employees with at least one male candidate.

8 0
3 years ago
Train A and train B leave a central station at the same time. They travel the same speed, but in opposite directions, with train
ratelena [41]
Recall your d  = rt, distance = rate * time

so, keeping in mind that both trains are going at the same speed, say speed of "r" mph, after 212 hours A arrived at station A and after 4 hours, B arrived at station B.

now, the distance covered by train A is say "d", we know both stations are 585 miles apart, so, if train A covered "d" miles in those 212 hours, then train B covered the slack from 585 and d, that is "585 - d".

\bf \begin{array}{lccclll}&#10;&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\&#10;&------&------&------\\&#10;\textit{Train A}&d&r&212\\&#10;\textit{Train B}&585 - d&r&4&#10;\end{array}&#10;\\\\\\&#10;\begin{cases}&#10;\boxed{d}=212r\\&#10;585-d=4r\\&#10;----------\\&#10;585-\boxed{212r}=4r&#10;\end{cases}&#10;\\\\\\&#10;585=216r\implies \cfrac{585}{216}=r\implies \cfrac{65}{24}=r\implies \stackrel{mph}{2\frac{17}{24}}=r
8 0
3 years ago
Read 2 more answers
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