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Sergio039 [100]
3 years ago
9

Pls help! uwu

Mathematics
2 answers:
Ahat [919]3 years ago
3 0

Answer:

pretty sure its D

Step-by-step explanation:

because M is how much you had to begin with and then you boughts a 25.00 gift and now you have 176.89 and M= 201.89

Lynna [10]3 years ago
3 0

Answer:

b: m = $176.89 - $25.00; $151.89

step-by-step explanation:

If you do 176.89 - m it doesn't make sense because 176.89 is the money he had after he bought the gift.

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On a factory floor, 30 out of every 140 toy robots is defective. What percent is defective?
yaroslaw [1]

Answer:

21.43\%

Step-by-step explanation:

we know that

To find out the percent of robots which are defective, divided the number of defective robots by the total number of robots and multiply the result by 100

Let

x ----> the number of defective robots

y ----> the total number of robots

p ---> percentage of robots which are defective

so

p=\frac{x}{y} (100)

we have

x=30\\y=140

substitute

p=\frac{30}{140}(100)

p=21.43\%

5 0
3 years ago
Use substitution to find the solution to the system of equations.
mote1985 [20]

Answer:

Ummm, so the answer is A. (-3,-2)

StepByStep Solution:

5x + 7(x+1) =-29

5x+7x+7=-29

12x=-36

x=-3

y=-3+1

y=-2

4 0
3 years ago
Read 2 more answers
Find unknown number lb=oz
Vlada [557]

Answer:

72

Step-by-step explanation:

multiply by 16

6 0
3 years ago
Read 2 more answers
I need help with the incorrect ones please
Morgarella [4.7K]

Answer:

73.6

61.824

.2776

2.3

1.342

.4129

*note* I had trouble reading the standard deviation of the second part, so if it's not 3 then leave a comment and i will fix it*

Step-by-step explanation:

1.)

the mean would be something like 460*.16= 73.6

The variance should be 460*.16(1-.16)= 61.824 which means the standard deviation is √61.824= 7.863

for p to be less than .15 it would have to be less than .15*460= 69

(69-73.6)/7.863= -.59 which has a probability of .2776

2.)

the mean is 2.3

I am not sure if the standard deviation is 3 or .3 (picture is kind of blurry)

I am thinking that it's three which would mean that the standard deviation would be √(3²*(1/5))= 1.342

(2-2.3)/1.342= -.22 = .4129

5 0
2 years ago
Simplify the expression:
olga55 [171]

Answer:

The correct answer is 20x-1

5 0
3 years ago
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