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nika2105 [10]
3 years ago
6

HAI I NEED HALP SO YEAH PLZ

Mathematics
1 answer:
alina1380 [7]3 years ago
3 0

Answer: The answer is E

Step-by-step explanation:

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Solve the following system of equations.
Elan Coil [88]

Answer:

(2,-3)

Step-by-step explanation:

I am not sure if you meant the first equation to be y or -y.  I solved it as y.

y = x-5                       -x -3y =7

I am going to take the second equation and write it as x =

-x - 3y = 7  Give equation

-x = 3y +7   Add 3y to both sides

x = -3y-7  Multiplied each term in the equation by -1 so that x could be positive

I am going to substitute -3y-7 for x in the first equation up above

y = x - 5

y = -3y -7 - 5  Substitute -3y-7 for x

y = -3y -12  Combined -7-5

4y = -12  Added 3y to both sides

y = -3  Divided both sides by 4.

I now know that y is -3, I will plug that into x = -3y-7 to solve for x

x = -3(-3) -7

x = 9-7   A negative times a negative is a positive

x = 2

5 0
1 year ago
Gail practices swimming for 1 and 1 fourth hours swimming every day how much time does she practice in a week
Lorico [155]
If Gail practises swimming for 1 and 1/4 hours a day, then in a week she'll do:

1 1/4 * 7 = 5/4 * 7 = 35/4 = 8 3/4 [hours]

In other words she'll practice 8 hours and 45 minutes a week (assuming that she's still practicing on weekends).
8 0
3 years ago
GIVING BRAINLY! :)
Leya [2.2K]
X-intercept: 9
Y-intercept: 3

Intercepts are plotted on the graph below

8 0
2 years ago
Write the sentence as an inequality.<br> A number x is greater than -6
Tpy6a [65]
The answer would be X<-6
7 0
3 years ago
The student to teacher ratio is 19:1 at school and there is a total of 400 students and teachers. How many teachers and how many
Jet001 [13]
Suppose there are 19x students, 1x teachers
19x+1x=400
20x=400
x=20
there are 20 teachers and 380 students. 
6 0
3 years ago
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