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almond37 [142]
3 years ago
6

Three defective electric toothbrushes were accidentally shipped to a drugstore by the manufacturer along with 17 non-defective o

nes. What is the probability that the first two electric toothbrushes sold will be returned to the drugstore because they are defective
Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
7 0
Sleep nxbd ns jus juz b hb s hs s shs sh
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What is the first step to solve the following system of equations using substitution?
Akimi4 [234]

Answer:

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

Thus, option A) is true.

The solution to the system of equations be:

x = 4, y = 5

Step-by-step explanation:

It is important to remember that when we solve the system of equations, the first step we need to do is to solve one of the equations for one of the variables.

Given the system of equations

x - y = -1

2x - y = 3

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

x-y=-1

Add y to both sides

x-y+y=-1+y

x=-1+y

Thus, option A) is true.

<u>NOW LET US SOLVE THE REMAINING PORTION</u>

\mathrm{Subsititute\:}x=-1+y to solve for y

\begin{bmatrix}2\left(-1+y\right)-y=3\end{bmatrix}

-2+y=3

y=5

For x = -1 + y

substitute y = 5

x=-1+5

x=4

Thus, the solution to the system of equations be:

x = 4, y = 5

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3 years ago
Convert €3.2 per kilogram to unit price dollars per pound
MatroZZZ [7]

We get 1.45 dollars per pound when we convert 3.2 Euros per kilogram to dollar per pound.

According to the question,

We have the following information:

3.2 Euros per kilogram

We need to convert its units into dollars per pounds.

We know that 1 Euro is approximately equal to 1 US dollar and 1 kilogram of weight is equal to 2.205 pounds.

(Note that there are various conversions from Euro to dollars which have 1 Euro equal to 1.00755 and many other values. In this case, we have rounded it off to 1 to avoid any confusion.)

(We know that per means the unit given is in divide.)

So, we have:

(3.2*1)/(1*2.205)

3.2/2.205

1.45 dollar per pounds

Hence, the conversion to dollars per pounds is 1.45 dollar per ponds from Euros per kilogram.

To know more about dollars here

brainly.com/question/28547396

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For Caroline’s birthday, her mom took her and 4 friends to a water park. Caroline’s mom paid $40 for 5 student tickets. What was
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Answer:

each kid would be 9$ a ticket

Step-by-step explanation:

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