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dangina [55]
3 years ago
7

In the morning Joaquin recorded a temperature of 82°F. The temperature decreased 6.5°F by the afternoon. What is the temperature

in the afternoon
Mathematics
1 answer:
Elena-2011 [213]3 years ago
8 0

Answer:

the temperature is 75.5

Step-by-step explanation:

82 degrees - 6.5 degrees is 75.5 degrees

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What is the area?<br> 7 m<br> 4 m<br> square meters?
bija089 [108]

Answer:

28 square meters

Step-by-step explanation:

7 x 4= 28

28 square meters

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3 years ago
Two solutions of the equation Ax+By = 1 are (2, -1) and (-3,-2). Find A and B.
kati45 [8]

Answer:

Substitute in the values of both given coordinates & form 2 equations:

\left \{ {{A(2)+B(-1)=1} \atop {A(-3)+B(-2)=1}} \right. \\\\=\left \{ {{2A-B=1} \atop {-3A-2B=1}} \right.

Find the value of B from the equation 2A - B = 1:

2A-B=1\\-B=1-2A\\B=2A-1

Substitute in the B-value to the other equation:

-3A-2B=1\\-3A-2(2A-1)=1\\-3A-4A+2=1\\-7A=1-2\\-7A=-1\\A=\frac{-1}{-7} =\frac{1}{7}

Find the B-value using the equation from before:

B=2A-1=2(\frac{1}{7})-1=\frac{2}{7} -\frac{7}{7} =-\frac{5}{7}  

Therefore the equation Ax + By = 1 would equal:

\frac{1}{7} x-\frac{5}{7} y=1

4 0
3 years ago
Back to my question. I have this problem that I cant solve.
vesna_86 [32]

Answer:

Step-by-step explanation:

-21-9k=-8(6k+3)

-21-9k= 48k+24

+9k          +9k

-21=57k+24

-24         -24

-45=57k

divide 57 by -45

k= -1.2

idk if that helps, sorry

6 0
3 years ago
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Step-by-step explanation:

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3 years ago
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Which number line represents the solution set for the inequality ? HELP PLEASE
irga5000 [103]

Step-by-step explanation:

if you need any explanation you can ask

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