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jeka57 [31]
3 years ago
11

.Divide the sum of 13/5 and -12/7 by the product of -31/7 and -(1/2)

Mathematics
2 answers:
andre [41]3 years ago
6 0

Answer:

hello u so cool i admire you <3

Karo-lina-s [1.5K]3 years ago
3 0
Solved! There you go :)

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Can someone plz help I do not know what I am doing
PolarNik [594]

the answer is D-n is greater then or equal to nine.

because the red dot starts on nine and goes up its greater than nine and because its on nine its also going to equal it. I had a problem getting the signs messed up when I learned it but I remember the sign always eats the greater number. I hope this answer could help and I'm sorry if the answer is incorrect.

3 0
3 years ago
3/4x - 5y = 7<br> X = -4y + 12<br><br> solve by substitution ! show work pls !!
tamaranim1 [39]
When using substitution, we are imputing an equation in place of a variable to eliminate one of the variables in the equation so that we can solve for the remaining variable.

For this example, we will be plugging in (-4y+12) wherever "x" is in the other equation.

3/4 x -5y = 7
3/4(-4y+12) -5y =7
((3/4)(-4y))+((3/4)12)-5y=7
-3y+9-5y=7
-8y= -2
y=(1/4)


Now find "x" by plugging in the y-value.
x=(-4*(1/4))+12
x= -1 +12
x=11

any questions? feel free to comment below!
8 0
3 years ago
AC=8x-14 and EC=2x+11, solve for x
dimaraw [331]

Answer:

x = 4.167

Step-by-step explanation:

8x - 14 = 2x + 11 add 14 to 14

8x = 2x + 25 subtract 2x to 2x and 8x

6x = 25 divide by 6

x= 4.167 repeating

7 0
3 years ago
Find y..........................................................................................................................
Tcecarenko [31]

sin30 =  \frac{o}{h}  \\ sin30 =  \frac{5}{x}  \\ x =  \frac{5}{0.5}  \\ x = 10

{10}^{2}  +  {10}^{2}   =  {y}^{2}  \\ 100 + 100 =  {y}^{2}  \\ 200 =  {y}^{2}  \\  \sqrt{200}  = y \\ 14.14 = y\\

4 0
3 years ago
0.5 of what number is 3
Radda [10]

Answer:

6

Step-by-step explanation:

Half of 6 is 3

5 0
3 years ago
Read 2 more answers
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