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vesna_86 [32]
3 years ago
8

How to determine if an outcome is unusual

Mathematics
1 answer:
lbvjy [14]3 years ago
3 0
The only way to determine whether or not an outcome is unusual or not is to compare it with previous or future outcomes.
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A delivery truck is transporting boxes of two sizes: large and small. The large boxes weigh 50 pounds each, and the small boxes
Arturiano [62]

Answer: 50 large box

Step-by-step explanation:

First, "boxes of two sizes" means we can assign variables:

Let x = number of large boxes

y = number of small boxes

"There are 115 boxes in all" means x + y = 115 [eq1]

Now, the pounds for each kind of box is:

(pounds per box)*(number of boxes)

So,

pounds for large boxes + pounds for small boxes = 4125 pounds

"the truck is carrying a total of 4125 pounds in boxes"

(50)*(x) + (25)*(y) = 4125 [eq2]

It is important to find two equations so we can solve for two variables.

Solve for one of the variables in eq1 then replace (substitute) the expression for that variable in eq2. Let's solve for x:

x = 115 - y [from eq1]

50(115-y) + 25y = 4125 [from eq2]

5750 - 50y + 25y = 4125 [distribute]

5750 - 25y = 4125

-25y = -1625

y = 65 [divide both sides by (-25)]

There are 65 small boxes.

Put that value into either equation (now, which is easier?) to solve for x:

x = 115 - y

x = 115 - 65

x = 50

There are 50 large boxes.

Check (very important):

Is 50+65 = 115 ? [eq1]

115 = 115 ?yes

Is 50(50) + 25(65) = 4125 ?

2500 + 1625 = 4125 ?

4125 = 4125 ? yes

4 0
2 years ago
I need help plz and fast
Alik [6]

Answer:

1

Step-by-step explanation:

1+19=20

so only 1 visit is available if they only have $20 to use.

6 0
3 years ago
Read 2 more answers
4. Maggie carried 3 bags of groceries in from the grocery store. • The first bag weighed 4 5/12pounds. • The second bag weighed
Yuliya22 [10]

Answer:

1 1/3 I think

Step-by-step explanation:

Hope I helped :D

6 0
3 years ago
Find the conjugate of -2 + 3i.
Charra [1.4K]

Answer:

- 2 - 3i

Step-by-step explanation:

given a complex number a + bi

then the conjugate is a - bi

The real part a remains unchanged while the sign of the imaginary part is reversed.

the conjugate of - 2 + 3i is - 2 - 3i


4 0
3 years ago
Hillary pours 10 cups of orange juice into glasses that hold 1 2/3 cup each. How many glasses does Hillary fill?
Svetach [21]

10 =  \frac{30}{3 }  \\ 1 +  \frac{2}{3}  =  \frac{5}{3}  \\ \frac{30}{3}  \div  \frac{5}{3}  =  \frac{30}{3}  \times  \frac{3}{5}  = 8glasses

3 0
3 years ago
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