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prohojiy [21]
3 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]3 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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Determine whether theses lines are parallel, perpendicular or neither
belka [17]

Answer:

Lines 2 and 3 are parallel with slope (-2/3) and different y intercepts, and both are perpendicular to line 1              (-1) / (3/2) = (-2/3)

Step-by-step explanation:

Parallel lines have the same slope

Perpendicular lines have negative reciprocal slopes

line 1: 6x - 4y = 2

line 1: 4y =  6x - 2

line 1:   y = (3/2)x - 0.5

line 2:  y = (-2/3)x - 6

line 3:3y = -2x + 4

line 3: y = (-2/3)x + 4/3

8 0
3 years ago
To graph the function ​f(x)​, a student translates the graph of the parent quadratic function 5 units right and 8 units down. Ca
valina [46]

Answer:

its 5

Step-by-step explanation:

4 0
3 years ago
Using words, how do you solve for x? <br> -20 = x + 16
nadya68 [22]
-20 = x + 16.....subtract 16 from both sides
-20 - 16 = x....combine like terms
-36 = x
7 0
3 years ago
Read 2 more answers
Which of the following points satisfies the inequality x ≥ -3? (Select all that apply.)
natali 33 [55]
Have you found the answer yet
7 0
3 years ago
Leslie cobar's piggy bank 36 coins. Some are quarters and rest are half - dollars. If the total vaule of the coins is $14.75, ho
garri49 [273]

Answer:

Leslie has 13 quarters and 23 half-dollars.

Step-by-step explanation:

You can write the following equations from the information given and considering that a quarter is $0.25 and half-dollar is $0.50:

x+y=36 (1)

0.25x+0.50y=14.75 (2), where:

x=amount of quarters

y=amount of half-dollars

First, you can isolate x in (1):

x=36-y (3)

Then, you can replace (3) in (2):

0.25(36-y)+0.50y=14.75

9-0.25y+0.50y=14.75

0.25y=5.75

y=5.75/0.25

y=23

Finally, you can replace the value of y in (3) to find the value of x:

x=36-23

x=13

According to this, the answer is that Leslie has 13 quarters and 23 half-dollars.

3 0
3 years ago
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