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zavuch27 [327]
2 years ago
6

3x−2y=−2 6x−2y=10 solve by elimination

Mathematics
1 answer:
Anvisha [2.4K]2 years ago
3 0

Answer:

x=4 y=7

Step-by-step explanation:

When multiplying 3x by -2, you get -6x. -6x and 6x cross out. You're left with -2y=-2 and -2y=10.

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Gina and Lucy go to the library at 3:30 p.m. They need to be at home at 4:45 p.m. It takes them 15 minutes to walk to the librar
MrRa [10]
4:45 -3:30 -2*(0:15) = 0:45

Gina and Lucy can spend 45 minutes at the library.

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They will get to the library at 3:45. They must start home by 4:30. From 3:45 to 4:00 is 15 minutes, and it is 30 more minutes to 4:30. The time they can spend at the library totals 45 minutes.
7 0
3 years ago
A/27 = -3.23
CaHeK987 [17]

Answer:

K/(1.2)= -0.07

54.6 = 4.2y

-7.2y = 61.2

Math rush please help

Step-by-step explanation:

a/27 = -3.23

K/(1.2)= -0.07

54.6 = 4.2y

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Math rush please help

7 0
2 years ago
I NEED HELP!! THIS MY FINAL!
barxatty [35]

Answer:

13.5

18.1

72.2

12.8

6,2

66.1

49.1

14

31.8

Step-by-step explanation:

In solving this question, remember the annotation SOHCAHTOA

1. We are given the value of the hypotenuse and we are to determine the value of the adjacent side. COS would be used to determine this value

Cos 26 = Adjacent / hypotenuse

cos 26 = x / 15

x / 15 =0.8988

x = 15 x 0.8988 = 13.5

2. We are given the value of the hypotenuse and we are to determine the value of the opposite side. SIN would be used to determine this value

Sin = opposite / hypotenuse

sin 49 = x / 24

0.7547 = x / 24

x = 0.7547 x 24

x = 18.1

3. We are given the value of the opposite side and we are to determine the value of the adjacent side. TAN would be used to determine this value

Tan = opposite / adjacent

tan 14 = 18 /x

18 / 0.2493 = 72.2

4.  We are given the value of the adjacent and we are to determine the value of the hypotenuse side. COS would be used to determine this value

cos 67 = opposite / hypotenuse

0.3907 = 5/x

x =5/  0.3907 = 12.8

to determine the missing angle

7. tan^-1 = opposite / adjacent

8. cos^-1 = adjacent / hypotenuse

9 = sin^-1 = opposite / hyotensue

4 0
3 years ago
When 58,511 is divided by 21, the quotient is 2,786 R ___.<br><br> Numerical Answers Expected!
Marta_Voda [28]
The answer is 2,786 R5
3 0
2 years ago
Oliver traveled 124.25 miles in 3.5 at a constant speed. What is the constant of proportionality in miles per hour?
Darina [25.2K]

Oliver traveled 124.25 miles in 3.5 hours at a constant speed

Rate = 124.25 / 3.5 = 35.5 miles per hour (MPH)

Answer:

The constant of proportionality is 35.5 miles per hour (MPH)

5 0
3 years ago
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