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djverab [1.8K]
3 years ago
15

Substitute to solve Brainliest for correct answer

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
8 0

Answer:

4x-1y=3xy

Step-by-step explanation:

because 3-2=1 and add the y on and the do 4x-1y and that will = 3xy

Marina86 [1]3 years ago
3 0

Answer:

x=4, y=6

Step-by-step explanation:

hope that helps :)

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Solve and will mark brainliest
Sergeu [11.5K]

There is a 60 minute gap between the two clocks.

These 60 minutes result of a 1 min advance in one for each hour and a 2 min loss in the other.

if we are going 2 mins back and 1 min in

We have a 3 min gap/hour

then to reach a 1 hour gap we would need to go for 2+1+2+1+2+1+2....(20 hours)

since each 3 represent an hour,

to get 60 min gap>60/3=20 hours

Take clock 1 for example, which read 12:00, in reality the time is (12:00-20 minutes)=11:40

or

Take clock 2 for example, which read 11:00, in reality the time is (11:00+20×2 minutes)=11:40

Now go back 20 hours from that;

11:40-20=00:40-9=15:40

There's ur answer 15:40 :)

7 0
2 years ago
Y=2x+1 x+y=7 pls help meeeeeeeee
Gala2k [10]

Answer:

y=2,\:x=\frac{5}{2}

Step-by-step explanation:

\begin{bmatrix}x+1\cdot \:x+y=7\\ y=2\end{bmatrix}

x+1· x+2=7

Simplify x+1· x+2:    2x+2x+1· x+2

Add similar elements: x+1· x=2x=2x+2

2x+2=7[ 2x+2=7 ]

Isolate x for 2x+2=7:    x=52 2x+2=7

Subtract 2 from both sides

2x+2−2=7−2

Simplify

2x=5

Divide both sides by 2

2x2 =52 Simplify

5 0
3 years ago
Read 2 more answers
Divide 3m 80cm of ribbon in the ratio of 1/3 : 3/4 : 1/2 what is the result?​
JulijaS [17]

Answer:

80 cm / 180 cm / 120 cm

Step-by-step explanation:

the smallest common multiple of 3, 4 and 2 is 12.

so, to be able to truly compare these fractions we need to bring all denominators to .../12.

1/3 = 4/12

3/4 = 9/12

1/2 = 6/12

in total we have therefore 19 (4+9+6) equally large parts of the ribbon that are then combined :

4 parts for the first segment.

9 parts for the second segment

6 parts for the third segment.

so, one part is

380 cm / 19 = 20 cm

therefore the first segment of the ribbon is

4×20 = 80 cm long

the second segment

9×20 = 180 cm long

the third segment

6×20 = 120 cm long

4 0
3 years ago
The principal has a budget of $225 and expects at least 16 people to attend.
ale4655 [162]

Answer:

$48

Step-by-step explanation:

16 x 3 = 48

7 0
3 years ago
Read 2 more answers
Write the answer in scientific notation and in standard form.Round to the appropriate number of significant digits.
Aleks [24]

Hey there, the answer is C.

After multiplying, you will get .37278. However, it's asking you to consider the significant figure of 3 so you'll have to round it to .373. C has that only option

7 0
3 years ago
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