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Alexxandr [17]
3 years ago
13

The scatter plot shows the study time and test scores for the students in Mrs. Johnson's English Literature class.

Mathematics
2 answers:
Finger [1]3 years ago
8 0

Answer:

Based on the results, which of the following is an appropriate score for a student who studies for 1 hour?

a.

68

b.

98

c.

82

d.

72

  Its C

Step-by-step explanation:

kati45 [8]3 years ago
5 0

Answer:

b

Step-by-step explanation:

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X-2y+z=5 <br>3x+3y-2z=-6 <br>2x-y+3z=11 <br>find x+y+z
BartSMP [9]
      x - 2y + z = 5   | *2
 ⇒ 2x - 4y+ 2z=10
     3x + 3y - 2z = - 6     } I sum up these relations
--------------------------------
    2x+3x - 4y+3y+2z-2z=10-6
     5x - y = 4       (1)

    3x + 3y - 2z = - 6   | *3         ⇒ 9x + 9y - 6z = - 18
    2x - y + 3z = 11     | *2         ⇒ 4x - 2y + 6z= 22       I sum up these
                                              ----------------------------------
                                                ⇒ 9x+4x+9y-2y-6z+6z= 4
                                                     13x+ 7y= 4     (2)
I write (1) and (2)
5x - y = 4   | *7
35x - 7y= 28
13x+7y=4
48x = 32
x= 32/48=4/6 ( 32:8=4, 48:8=6)
x= 2/3
5x-y=4, 
5*2/3-y=4
y=10/3 -4=10/3-12/3=-2/3
⇒ y= - 2/3
x - 2y + z = 5
2/3 - 2*(-2/3)+z=5
2/3+4/3+z=5
6/3+z=5
2+z=5
z=3
x+y+z=2/3-2/3+3=3

x+y+z=3







3 0
3 years ago
4. Select all the ways that describe the
postnew [5]

Answer:

all

Step-by-step explanation:

have the awnserbbbnnnnnnnnnnnn

4 0
3 years ago
Solve the system of equations.
postnew [5]

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(20,−1)

Equation Form:

x=20,y=−1

plz mark me as brainliest :)

5 0
3 years ago
Two drunks start out together at the origin, each having equal probability of making a step to the left or right along the x axi
pashok25 [27]
They'll meet wen they are sober lol
7 0
3 years ago
Astore pays $927.40 for a water heater and marks the price up by 5%. What is the new price?
Slav-nsk [51]

Answer:

$973.77

Step-by-step explanation:

$927.40 = 100%

New price = 100% + 5%

New price = 105% of 927.40

105% of 927.40 = 1.05(927.40)

1.05(927.40) = 973.77

-Chetan K

8 0
3 years ago
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