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prohojiy [21]
4 years ago
8

The average of 3 test scores if the first two scores are 78 and 82 s=3rd test score

Mathematics
1 answer:
katen-ka-za [31]4 years ago
3 0
If you're given 78 and 82 the answer is a simple average
(78 + 82 + s)/3

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Due to delays, a company had to extend a project from 64 days to 123 days. What was the percentage increase in time to complete
Lana71 [14]

Answer:

40%

Step-by-step explanation:

4 0
4 years ago
Y=3x-2
Inessa [10]

Answer:

a) (x,y) = (3, 7) is a solution of the linear equation.

b) The rate of change of the equation is 3.

c) The y-intercept of the equation is -2.

d) <em>Jayne is working in the grocery one day, according to her calculations, renting the lot costs 2 dollars per day and she could earn 3 dollars per hour by selling pastries. How much money does she earn after working 8 hours?</em>

Step-by-step explanation:

a) If (x,y) = (3, 7) is a solution of the linear equation, then f(3) = 7. If x = 3, then the function evaluated at this value is:

y  = 3\cdot (3) -2

y = 7

Hence, (x,y) = (3, 7) is a solution of the linear equation.

b) The rate of change of the equation is represented by the slope of the function, which is the constant that multiplies the indepedent variable (x). Hence, the rate of change of the equation is 3.

c) The y-intercept of the equation is the only constant of the equation. Hence, the y-intercept of the equation is -2.

d) A real-world scenario would be the following: <em>Jayne is working in the grocery one day, according to her calculations, renting the lot costs 2 dollars per day and she could earn 3 dollars per hour by selling pastries. How much money does she earn after working 8 hours?</em>

7 0
3 years ago
the pool at the apartment is 30 feet long 20 feet wide and five feet deep it has been filled to 4 feet how many more cubic inche
pickupchik [31]

Answer:

600 cubic feet

Step-by-step explanation:

6 0
3 years ago
Solve the equation for x:<br><br> X+4/X+9 =6/5
dlinn [17]

Equations are used to represent equal expressions.

The value of x in \frac{x + 4}{x + 9} = \frac 65 is -34

The equation is given as:

\frac{x + 4}{x + 9} = \frac 65

Cross multiply

5 \times (x + 4) = 6 \times (x + 9)

Apply distributive properties

5 \times x + 5 \times 4 = 6 \times x + 6 \times 9

Evaluate all products

5x + 20= 6x + 54

Collect like terms

6x - 5x = 20 - 54

x = -34

Hence, the value of x is -34.

Read more about equations at:

brainly.com/question/17071169

5 0
2 years ago
Which of the following situations would best be modeled by a discrete relationship? a. A teacher counts the number of students i
Nata [24]

Answer:

Option d is correct.

Step-by-step explanation:

Discrete values are those which take an integer value not in fraction.

Option A is discrete because there will be certain number of students in class say 20 or 30

We can not have 20.5 students

Therefore, option a is correct.

Option B is not discrete because many people can have age say 65 and a half years and weight can be in decimals say 50.5 kgs.

Option C is correct because he is saving a proper integer number of money.

Therefore, option d is correct that is both A and C are correct.

4 0
3 years ago
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