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Cloud [144]
3 years ago
7

Answering these questions

Mathematics
1 answer:
Rudiy273 years ago
6 0
1.\\ a)\ y=2x-3\ \ \ |subtract\ y\ from\ both\ sides\\\\\boxed{2x-y-3=0}\\\\b)\ y=\dfrac{1}{3}x-\dfrac{2}{5}\ \ \ |multiply\ both\ sides\ by\ 15\\\\15y=5x-3\cdot2\ \ \ |subtract\ 15y\ from\ both\ sides\\\\\boxed{5x-15y-6=0}


2.\\a)\ 5x-y+3=0\ \ \ |add\ y\ to\ both\ sides\\\\\boxed{y=5x+3}\\\\d)\ 7x+2y-3=0\ \ \ |subtract\ 7x\ from\ both\ sides\\\\2y-3=-7x\ \ \ |add\ 3\ to\ both\ sides\\\\2y=-7x+3\ \ \ \ |divide\ both\ sides\ by\ 2\\\\\boxed{y=-3.5x+1.5}


3.\\y=25x+100\ \ \ \ |subtract\ y\ from\ both\ sides\\\\\boxed{25x-y+100=0}
You might be interested in
What is the value of the expression 9 x 4 - (2 x 1/2)
love history [14]

Answer:

35x

Step-by-step explanation:

Start with parentheses, 2 x 1/2 = 1

9 x 4 = 36

36 - 1 = 35

4 0
3 years ago
The means and mean absolute deviations of Sidney’s and Phil’s grades are shown in the table below which expression represents th
Shalnov [3]

The ratio of the difference of the two means to Sidney’s mean absolute deviation is; 4/3.28

<h3>How to find the Mean Absolute Deviation?</h3>

From the given table, we see that;

Mean grade of Sidney = 82

Mean grade of Phil = 78.

Mean absolute deviation of Sidney = 3.28

Mean absolute deviation of Phil = 3.96.

The difference between the two means of Sidney and Phil = 82 - 78 = 4.

Thus, the ratio of the difference of the two means to Sidney’s mean absolute deviation is; 4/3.28

Complete Question is;

The means and mean absolute deviations of Sidney’s and Phil’s grades are shown in the table below. Means and Mean Absolute Deviations of Sidney’s and Phil’s Grades Sidney Phil Mean 82 78 Mean Absolute Deviation 3.28 3.96 Which expression represents the ratio of the difference of the two means to Sidney’s mean absolute deviation?

Read more about Mean Absolute Deviation at; brainly.com/question/447169

#SPJ1

6 0
2 years ago
In a class, every student knows French or German (or both). 15 students know French, and 17 students know German. What is the la
Marina CMI [18]

Solution:

we are given that

In a class, every student knows French or German (or both).

15 students know French, and 17 students know German.

Suppose there are x student who knows both French and German.

Then Total number of student in the class will be (15+17-x)=32-x

But to guess the largest possible number of student in the class we can assume x=0

Hence the largest Possible number of Student in the class=32

6 0
3 years ago
Using the formula y=mx+b whats the equation of (2,-8) with a slope of -1?
Leona [35]

Answer:

y = -x - 6

Step-by-step explanation:

Given:

  • slope = -1
  • point (2,-8)

From:

\displaystyle \large{y=mx+b}

where m = slope and b = y-intercept. Therefore:

\displaystyle \large{y=-1x+b}\\\displaystyle \large{y=-x+b}

Since the equation passes through a point (2,-8). Substitute x = 2 and y = -8 in and solve for b:

\displaystyle \large{-8=-2+b}\\\displaystyle \large{-8+2=b}\\\displaystyle \large{b=-6}

Then substitute b-value in the equation:

\displaystyle \large{y=-x+b}\\\displaystyle \large{\therefore y=-x-6}

Hence, the equation is y = -x - 6

4 0
2 years ago
Read 2 more answers
HELP PLEASEEEEEEEEEEEEEEEEEEEE
GalinKa [24]

Answer:

3 9/50

Step-by-step explanation:

3.18 is 3 18/100

Simplifying it further you get: 3 9/50

4 0
2 years ago
Read 2 more answers
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