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Ipatiy [6.2K]
3 years ago
5

Please help 2 qeastions

Mathematics
2 answers:
pentagon [3]3 years ago
8 0

Answer:

B for the first problem and D for the second problem                                                                

Neko [114]3 years ago
3 0
B and D ..............
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Solve the following by elimination method <br> 11x+15y+23=0 and 7x-2y-20=0
mr Goodwill [35]
Let 11x + 15y + 23 = 0 be equation (1)
And 7x - 2y - 20 = 0 be equation (2)

Multiply equation (1) by 2:
22x + 30y + 46 = 0

Multiply equation (2) by 15:
105x - 30y - 300 = 0

Add equations (1) and (2):
22x + 105x + 30y - 30y + 46 - 300 = 0
127x - 254 = 0
127x = 254
x = 254/127
[x = 2]

Substitute x = 2 in equation (1) to find y:
11(2) + 15y + 23 = 0
22 + 15y + 23 = 0
15y + 45 = 0
15y = -45
y = -45/15
y = -3

Therefore, x = 2 and y = -3.
7 0
3 years ago
Please help me .................​
Zinaida [17]

Answer:

<em><u>Hi</u></em><em><u> </u></em><em><u>you</u></em>

Hope that will help you

<em>Nice</em><em> </em><em>time</em>

6 0
3 years ago
Only 4 please i need it by tomorrow
seraphim [82]
No she is not correct she needs to go back to school and learn math 
8 0
3 years ago
Six students are working on math 2/3 of them are working on fractions. How many students are working on fractions
Ostrovityanka [42]

Answer:

4 students are working on fractions

Step-by-step explanation:

5 0
3 years ago
I'll mark you as the brainiest if you get this correct thx xxx This homework is due tomorrow thx sm for your help
N76 [4]

Answer:

8 boxes of pens, 3 boxes of pencils

Step-by-step explanation:

120 is 3 boxes of pencils

120 is 8 boxes of pens

6 0
2 years ago
Read 2 more answers
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