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melisa1 [442]
3 years ago
13

Find the solution to the system:

Mathematics
1 answer:
Sliva [168]3 years ago
7 0

Answer:

u = 12, v= 15

Step-by-step explanation:

Given the system of simultaneous equation:

1/6 u− 1/3 v=−3... (1)

0.2u+0.1v=3.9...(2)

Rewriting both equation as fraction

1/6 u− 1/3 v=−3

1/5 u + 1/10 v = 39/10

Multiplying equation (1) by 6 and (2) by 10 we have:

u - 2v = -18... (3)

2u + v = 39...(4)

Using elimination method, we will first multiply equation (3) by 2 and (2) by 1 to have:

2u-4v = -36 ...(5)

2u+v = 39...(6)

Subtracting (5) from (6);

-4v-v = -36-39

-5v = -75

v = -75/-5

v = 15

Substituting v = 15 into equation (3) to get u we have:

u - 2(15) = -18

u - 30 = -18

u = -18+30

u = 12

The solution to the system of simultaneous equation are u = 12 and v = 15

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Which of the following equations is equivalent to
andrew-mc [135]

Answer:

B. y=3x+12

Step-by-step explanation:

Hi there!

We want to find out which equation is equivalent to -6x+2y=24

The equation is currently written in standard form, which is ax+by=c, where a, b, and c are integer coefficients, but a and b CANNOT equal zero

We can change the equation into slope-intercept form, which is y=mx+b, where m is the slope and b is the y intercept, as all of the answer options are in slope-intercept form.

To do that, we'll need to isolate y by itself on one side

So let's add 6x to both sides to remove it from the left side

-6x+2y=24

+6x        +6x

__________________

     2y=6x+24

Now divide both sides by 2 to get the value of y by itself (1y)

y=3x+12

The answer is B. y=3x+12

Hope this helps!

5 0
3 years ago
I REALLY NEED HELP please somebody
nlexa [21]

Answer:

WITH WHAT WHATS WRONG???

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Need help with this?
Leto [7]

x= -2 hope this help do you need to show your steps?


5 0
3 years ago
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Find the average value of the following numbers 87, 79, 84, 70, 90
dem82 [27]

82

Explanation

the average is calculated by dividing the sum of the values in the set by their number.

Step 1

Let

\begin{gathered} \text{set}=\lbrace87,79,84,70,90\rbrace \\ the\text{ sum of the values is=87+79+84+70+90}=410 \\ n\text{umber of values= 5} \end{gathered}

Step 2

apply the equation

\text{Average}=\text{ }\frac{the\text{ sum of the values}}{\nu mber\text{ of values}}=\frac{410}{5}=82

so, the answer is 82

6 0
1 year ago
In a class of 40 students, 25 own a bicycle, 17 own a car, and 4 own neither a bicycle nor a car. how many of the students own b
sdas [7]
6 students own a bicycle and a car because 25+4+17 = 46 which mean 6 have both
6 0
2 years ago
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