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3 years ago

4x-5+3m-2x ; x=5 and m=7

Mathematics

2 answers:

Viefleur [7K]3 years ago

7 0

Answer:

Step-by-step explanation:

deff fn [24]3 years ago

3 0

Answer:

m=7

Step-by-step explanation:

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What can be concluded about the line represented in the table? Check all that apply. x y –6 –7 2 –3 8 0 The slope is 2. The slop

Stels [109]

The first thing we must do for this case is to find the equation of the line.
$y-yo = m (x-xo)
$
We have then:
$m = (y2 - y1) / (x2-x1)

m = (-3 - 0) / (2-8)

m = 1/2$
We choose an ordered pair:
$(xo, yo) = (8, 0)
$
Substituting values:
$y-0 = (1/2) (x-8)

y = (1/2) x - 4$

From here we conclude:

Intersection with y:
We evaluate x = 0 in the function:
$y = (1/2) (0) - 4

y = -4$

Slope of the line:
$m = 1/2
$

Point (-2, -5):
We evaluate the value of x = -2 and the value of y = -5
$-5 = (1/2) (- 2) - 4

-5 = -1 - 4

-5 = - 5$
The equation is satisfied.

Point (8, 0):
It is part of the table, therefore belongs to the line.

Answer:
The slope is 1/2
The y-intercept is -4.
The points (-2, -5) and (8, 0) are also on the line.

7 0

3 years ago

Read 2 more answers

Solve for x and y<br> 7x - 3y =23<br>2x - 4y = -8<br>

dybincka [34]

$Q. 7x - 3y =23$

$Lets, \: Find \: x :-$

$7x - 3y = 23$

$7x - 3(0) = 23$

$x = 3.286$

$Now, Lets \: find \: y :-$

$7x - 3y = 23$

$7(0) - 3y = 23$

$y \: = -7.667$

3 0

3 years ago

Read 2 more answers

Omar works as a tutor for $15 an hour and as a waiter for $7 an hour. This month, he worked a combined total of 83 hours at his

Alborosie

Answer: $8t+581$

Step-by-step explanation:

<h3> The complete exercise is: "Omar works as a tutor for $15 an hour and as a waiter for $7 an hour. This month, he worked a combined total of 83 hours at his two jobs. Let "t" be the number of hours Omar worked as a tutor this month. Write an expression for the combined total dollar amount he earned this month."</h3><h3 />

Let be "t" the number of hours Omar worked as a tutor this month and "w" the number of hours Omar worked as a waiter this month.

Based on the data given in the exercise, you know that Omar worked a combined total of 83 hours this month.

Then, you can represent the number of hours he worked as a waiter this month with this equation:

$w=83-t$

Since he earns $15 per hour working has a tutor and $7 per hour working as a waiter, you can write the following expresion to represent the total money earned:

$15t+7w$

Since $w=83-t$ , you can substitute it into the expression and then simplify it in order to find the final expression that represents the total amount of money Omar earned this month.

This is:

$15t+7(83-t)=15t+581-7t=8t+581$

4 0

4 years ago

He makes $316 a week and $23 for every sale he makes. He has to pay his rent this week that is $500, so he will need to make at

Lyrx [107]

let x be the number of sales Hayward needs to make

316+23x > or equals to 500

23x> or equals to 184

x> or equals to 8

4 0

3 years ago

A 9-inch diameter pizza has 30 calories per square inch. About how many calories are in the entire pizza?

Yuliya22 [10]

Answer:

113.04 calories

Step-by-step explanation:

please mark answer as brainlest

8 0

3 years ago

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