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dimaraw [331]
2 years ago
6

Tomas ia savin $17.00 each week to buy new sewing machine that costs 175.50.How many weeks will he have to save to have enough m

oney to buy the sewing machine
Mathematics
1 answer:
MatroZZZ [7]2 years ago
4 0
X=number of weeks
We can suggest this inequation:
17x>175.5
x>175.5/17>10.323>11    (the solution have to be a whole number, therefore the answer will be 11 weeks or more)

Answer: Tomas need save money during 11 weeks. 
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43 milk jugs are in a fridge with 11 that are spoiled. 5 jugs are randomly selected. what are the odds that the first two are go
malfutka [58]

Answer:

0.85% probability that the first two are good and the last three are spoiled

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the first two jugs is not important, as is not the order in which the last three are selected. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Desired outcomes:

2 spoiled, from a set of 43-11 = 32.

3 spoiled, from a set of 11.

So

D = C_{32,2}*C_{11,3} = \frac{32!}{2!(32-2)!}*\frac{11!}{3!(11-3)!} = 982080

Total outcomes:

5 jugs from a set of 43.

T = C_{43,5} = \frac{43!}{5!(43-5)!} = 115511760

Probability:

p = \frac{D}{T} = \frac{982080}{115511760} = 0.0085

0.85% probability that the first two are good and the last three are spoiled

4 0
3 years ago
The set of points P(0, 3), Q(2, 0), R(4, -3) are collinear and the line has a slope of _____.
jok3333 [9.3K]

Answer:

-3/2,collinear.

Step-by-step explanation:

slope of PQ=(0-3)/(2-0)=-3/2

eq. of line PQ is

y-3=-3/2(x-0)

y-3=-3/2 x

or2y-6=-3x

or 3x+2y=6

if R(4,-3) lies on it,then

3(4)+2(-3)=6

12-6=6

or 6=6

which is true.

Hence points P,Q,R are collinear.

and line has aslope=-3/2

7 0
2 years ago
If it takes 13 cup of flour to make 14 of a cake, how many cups of flour are needed to make a whole cake? i need help plz
aleksandrvk [35]

Answer:

1-1/3 if its 14

1/52 if its 1/4

Step-by-step explanation:

4 0
3 years ago
What is the area, in square feet, of the shape below?<br> 8.6 ft:<br> 8.7 ft
Gekata [30.6K]

Area of a triangle = 1/2 x base x height

Area = 1/2 x 8.7 x 8.6

Area = 37.41 square feet

4 0
2 years ago
Plz help first right gets brainly
Anestetic [448]
A. Is not linear because is has no y
How this helped ya out! :D
6 0
2 years ago
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