MATHEMATICS HIGH SCHOOL

What is the value of y?

Answers

Answer 1

Answer:

Answer:

try 70

Step-by-step explanation:

Answer 2

Answer: I’m pretty sure it’s 70

a. x = -5, y = 8

Step-by-step explanation:

$\left\{\begin{array}{ccc}3x=-31+2y&\text{subtract}\ 2y\ \text{from both sides}\n5x+6y=23\end{array}\right\n\n\left\{\begin{array}{ccc}3x-2y=-31&\text{multiply both sides by 3}\n5x+6y=23\end{array}\right\n\n\underline{+\left\{\begin{array}{ccc}9x-6y=-93\n5x+6y=23\end{array}\right}\qquad\text{add both sides of the equations}\n.\qquad14x=-70\qquad\text{divide both sides by 14}\n.\qquad x=-5\n\n\text{Put it to the second equation:}\n\n5(-5)+6y=23\n-25+6y=23\qquad\text{add 25 to both sides}\n6y=48\qquad\text{divide both sides by 6}\ny=8$

write an equation of a line with the given slope and y-intercept. m = –2, b = 4 a. y = –2x 4 b. y equals negative one half x plus 4 c. y = 4x – 2 d. y = –2x – 4

Answers

One of the many ways of writing the equations of lines is the slope - intercept form. This is generally expressed as,
y = mx + b
where m is the slope and b is the y-intercept.
Substituting the known values of m and b to the equation above,
y = -2x + 4

Thus, the answer is letter A.

Answer: (A) y = -2x + 4

Step-by-step explanation:

Marcus boxers dog 3/5 of a mile every day how far does Marcus walk his dog 6 days

Answers

Marcus walks 3.5 miles

Final answer:

By applying the concept of multiplication, we determine that Marcus walks his dog a total of 3.6 miles in 6 days if he walks 3/5 of a mile each day.

Explanation:

This question actually involves simple mathematics, specifically the concept of multiplication. Since Marcus walks his dog 3/5 of a mile each day, in order to calculate how far Marcus walks his dog in 6 days, we simply multiply the daily distance by the number of days. Therefore, the calculation will be as follows: 3/5 mile/day * 6 days = 18/5 miles = 3.6 miles.

So, Marcus walks his dog a total of 3.6 miles in 6 days.

Learn more about Multiplication here:

brainly.com/question/35502092

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Select the algebraic definition for the piecewise function graph.A. 2
B. 4
C. -3 is equal to x <-1
D. -1 is equal to x <1
E. 0
F. 1 is equal to x<3
G. -2 is equal to x<5
H. -3 is equal to x<3
I. 3

Answers

The piece-wise function is defined by:

$f(x) = 1, -3 \leq x < -1$

$f(x) = 2, -1 \leq x < 1$

$f(x) = 3, 1 \leq x < 3$

A piece-wise function is a function that has different definitions, based on the input.

In this graph:

When x is between -3(inclusive, closed circle) and -1(exclusive, open circle), the value is 1, thus, the first definition is:

$f(x) = 1, -3 \leq x < -1$

When x is between -1(inclusive) and 1(exclusive), the value is 2, thus, the second definition is:

$f(x) = 2, -1 \leq x < 1$

When x is between 1(inclusive) and 3(exclusive), the value is 3, thus, the third definition is:

$f(x) = 3, 1 \leq x < 3$

A similar problem is given at brainly.com/question/13205719

Final answer:

A piecewise function is defined by multiple sub-functions, each applying to a certain interval of the main function's domain. An example might be ' -3 is equal to x <-1', representing a portion of the function where any x-value less than -1 outputs -3.

Explanation:

Without the piecewise function graph, it's difficult to identify the correct algebraic definition. However, a piecewise function is a function which is defined by multiple sub functions. Each sub function applies to a certain interval of the main function's domain, which is why we see conditions like 'x < -1' following the function.

For instance, if we look at option C ' -3 is equal to x <-1', it suggests there is a piece of the function where any x-value less than -1 will output -3. It is important to note that these piecewise functions are visualized on a graph, often appearing as lines or curves that start or stop at certain points.