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Nutka1998 [239]
3 years ago
15

Can you show and tell how you got the answer

Mathematics
2 answers:
Mashutka [201]3 years ago
8 0
If the science teacher spent $65.50 on materials for the Mousetrap Car event, to find the unit cost per student you must divide the total cost by the number of students.

$65.50 ÷ 12 = 5.458 rounded to the nearest hundredth, it is C. $5.46 
Illusion [34]3 years ago
6 0
You want the unit cost   __per__   student.
That means divide the cost by the number of students.

$65.50/12 = $5.46

Answer: C. $5.46
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Hi i really need help so please try to answer these the best you can its multiple choice
finlep [7]
Answers are 2 and 3

supplementary angles and adjacent angles
8 0
3 years ago
_____ + 5 3/4 = 9 5/8<br>please help you will get 75 points​
LuckyWell [14K]

Answer:

3 7/8

Step-by-step explanation:

_____ + 5 3/4 = 9 5/8

x + 5 3/4 = 9 5/8

Subtract 5 3/4 from each side

x + 5 3/4 - 5 3/4 = 9 5/8 - 5 3/4

x = 9 5/8 - 5 3/4

Get a common denominator of 8

5 3/4 *2/2 = 5 6/8

x = 9 5/8 - 5 6/8

We need to borrow 1 from the 9 in the form of 8/8

x= 8 + 8/8+ 5/8 - 5 6/8

x = 8  13/8 - 5 6/8

  = 3 7/8

7 0
3 years ago
Read 2 more answers
Simplify the following<br>(x-y)²​
Elanso [62]

Answer:

x^{2} -2xy+y^{2} \

Step-by-step explanation:

6 0
3 years ago
Find the equation of the line that passes through both (5,1) and (8,-2)
Georgia [21]

Let f(x) = ax+b be the line that passes through both points.

We know that f(5) = 1 and f(8) = -2. So:

\begin{cases}5a+b = 1 \\ 8a+b = -2\end{cases}

Solving the system, we get that a= -1 and b = 6.

So the line is equal to f(x) = 6-x.

5 0
2 years ago
Whoever answers the questions correctly gets brainlist
andrew11 [14]

Answer:

2. B

3. B

4. 2(7k+5h)

5. $325

Step-by-step explanation:

2) "X decreased by the sum of 2x + 5" Decreased means to be lowered, so that means this problem has subtraction in it. It also says x is being decreased BY the sum of 2x + 5 so that means 2x + 5 needs to be solved, which calls for parentheses. B best fits the description.

3) It is B because if you distribute the 8 to 2a and 3b, you'll get 16a and 24b, which is the given expression.

4) The given expression is 10h + 14k and in the equivalent expression, you are given 5h. To get from 10 to 5, you must divide by 2. This tells you that 2 is being distributed, so you put 2 before the parentheses. Since you divided 10 by 2, you want to do the same to 14, which is 7. Therefore, it is 2(7k+5h).

5) You are given the hourly charge, which is $25. This means that they charge $25 per hour/for every hour. You want to find the cost for 13 hours, so you multiply the hourly charge by 13 hours. 25 x 13 = 325.

7 0
3 years ago
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