2x-y ;x=5,y=1 evaluating algebraic expressions

Answer:

The pounds of roasted pistachios nuts Christopher purchases is 10 pounds

Step-by-step explanation:

The given parameters are;

The price of raw almonds at Nuts.com = $8 per pound

The price of roasted pistachios at Nuts.com = $9 per pound

The amount Christopher spends on Nuts = $162

The quantity of nuts Christopher purchase = 19 pounds

Let the pounds of raw almonds nuts Christopher purchases = X and the pounds of roasted pistachios nuts Christopher purchases = Y

∴ $8·X + $9·Y = $162...(1)

X + Y = 19...(2)

Making X the subject of the formula in equation (2), we have;

X = 19 - Y

Substituting the value X in equation (1) gives;

$8·(19 - Y) + $9·Y = $162

$152 - $8·Y + $9·Y = $162

$1·Y = $162 - $152 = $10

Y = $10/($1) = 10

Y = 10 pounds

The pounds of roasted pistachios nuts Christopher purchased = Y = 10

The pounds of roasted pistachios nuts Christopher purchases = 10 pounds

X = 19 - Y = 19 - 10 = 9

X = 9 pounds

The pounds of raw almonds nuts Christopher purchases = X = 9

The pounds of raw almonds nuts Christopher purchases = 9 pounds

Answer:

C  or A

Step-by-step explanation:

I think this is write

Answer:

in 234,230 feet there are 44.36 miles

Answer: I think the answer is 624 girls im sorry if its wrong if it is can you please correct me

Step-by-step explanation:

Answer:

3.75mph, or 0.0625 miles a minute

Step-by-step explanation:

12 times 5 is 60

.75 times 5 is 3.75

so he was walking mathematically 3.75 miles per hour

Answer:

3.75 mph

Step-by-step explanation:

12 minutes is 0.2 hours

0.75/0.2 = 3.75 mph

Answer:

A

Step-by-step explanation:

K=(y1-y2)/(x1-x2)=(2+4)/(-2-1)=-2

y=-2x+b

2=-2*-2+b

b=-2

y=-2x-2

y+2x=-2

The equation of the line in standard form with integer coefficients is → y + 2x = - 2.

The general equation of straight line is -

y = mx + c          

where 'm' represents the slope of the line and 'c' is the y - intercept.

Given is a line that passes through the points -

(-2, 2), (1, -4)

We can calculate the slope of the line using the two coordinates given -

(-2, 2), (1, -4). The slope will be -

m = (- 4 - 2)/(1 + 2)

m = -6/3

m = - 2

Assume that the equation of line is -

y = -2x + c

The line passes through the point (-2, 2), so we can write -

2 = -2 x -2 + c

2 = 4 + c

c = -2

So, we can write the equation of line as -

y = - 2x - 2

or

y + 2x = - 2

Therefore, the equation of the line in standard form with integer coefficients is → y + 2x = - 2.

To solve more questions on Straight lines, visit the link below-

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Answer:

The True answer is -2>-3

Answer:

-5

Step-by-step explanation:

y2-y1/x2-x1

0-5/4-3

-5/1

Answer:

1.8 mile i think but do the math cz it should be.

Answer:

The sencond is wrong but the first is good

Step-by-step explanation:

Answer:288 number of cans.288 divided by 7=41

Step-by-step explanation:

Answer: B. 6

Step-by-step explanation:

Answer:

I did the entire thing I attached the picture for it !! hope this helps !!

I didnt do 5 and 7 cause I forgot how to do those!!

The slope of the line is - 3 and the y - intercept of the line is - 2.

The equation of line passing through the points (x₁ , y₁) and (x₂, y₂) with slope m is defined as;

y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

The equation of line is,

⇒ y = - 3x - 2

We know that;

The slope - intercept form of the equation of line is,

⇒ y = mx + b

Where, m is slope and b is y - intercept.

So, By comparing we get;

The slope (m) of the line = - 3

And, the y - intercept of the line = - 2.

Learn more about the equation of line visit:

https://brainly.com/question/18831322

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Step-by-step explanation:

Let's turn that into a linear system:

\{ {{y=0.05x+20} \atop {y=0.25x+10}} .{y=0.25x+10y=0.05x+20.

Set the equations equal to each other and solve:

0.05x+20=0.25x+100.05x+20=0.25x+10

0.2x=100.2x=10

x=50x=50

We then plug in to get yy :

0.25(50)+10=22.50.25(50)+10=22.5

The solution to the system is \{ {{x=50} \atop {y=22.5}} .{y=22.5x=50. .

Now, let's turn our attention to the statements.

The first one is false: Emilia's rate is higher, and the two plans cost the same at 50 texts, after which point Hiroto's plan becomes cheaper!

The second one is also false: we already figured out that the lines intersect at x=50x=50 .

The third statement is also false: as above, the lines intersect at x=50x=50 .

The fourth statement is true: the lines intersect at x=50x=50 .

In conclusion, the fourth statement - "Both plans cost the same when 50 texts are sent" - is true.

Cred to ultroid

Answer:

Step-by-step explanation:

The ans is 345/1000

Answer:  3.45x10⁻1

Step-by-step explanation:

Answer:

Step-by-step explanation: The change in Vivian’s elevation is a positive number because her elevation increased as she moved from the bottom back to the top.

Answer:

The answer is A- m=10

Step-by-step explanation:

The way to find slope is known as "Rise over Run" meaning the increase of Y over the increase of X. The increase of Y is 10 because 1 - (-9) = 10. The increase of X is 1 because 5 - 4  = 1. 10 over 1, or 10 / 1, equals 10.

Answer:

Step-by-step explanation:

60/5 is 12

12/90 is .133repeated

Answer:

8208 Rs

Step-by-step explanation:

Rs: 10260

Profit 20%

10260 * 0.20 * 100% = 2052 Rs

10260 Rs - 2052 Rs = cost of product to be produced

CP: Rs 10260

Profit: 20%

Solution: 20% off 10260 is equal to (20 x 20) / 100 = 2052. So if you buy an item at $10260 with 20% discounts, you will pay $8208 and get 2052 cashback rewards

Answer:

B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Because all the other ones are equal to x < -5/3 while only B wasn't and it was x > -5/3

Answer:

[tex]1\frac{7}{9}[/tex]

Step-by-step explanation:

[tex]1\frac{1}{3}[/tex] is the same as 4/3 so you'd be multiplying 4/3 x 4/3 so you multiply straight across to get 16/9 when you simplify you are left with 1 7/9

Hope that helps and have a great day!

Answer:

H

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

A function can't have 2 y-intercepts so y is not a function of x

Answer:

I believe it is A.

step-by-step explanation:

Because on the grid it is the Y corrdinate and the X coordinate so I belive it id True.

Hope it helps!

Have a brainly day! :D

Given problem:

What is the value of x = ?

 Solution:

Angle on a straight line is 180°

Sum of angles in a triangle  = 180°

Now to solve the problem, we need to find the two internal angles first;

  For the first one;

      let us say it is y;

              163 + y  = 180

                        y  = 180 - 163 = 17°

    For the second, assume it is z;

            69 + z = 180

                    z = 180 -69  = 111°

The sum of the internal angles of the triangle;

    y + z + 2x   =  180

     17 + 111 + 2x  = 180

                    2x  = 180 - 128

                     2x  = 52

                       x = [tex]\frac{52}{2}[/tex]   = 26

The value of x is 26

Answer:

30

Step-by-step explanation:

2x+5x= 105

7x= 105

x= 105/7

x= 15

First part= 2x= 2(15)= 30

Answer:

$18192.50

Step-by-step explanation:

From the information given;

The amount that will be reported on the income statement as net sales can be computed as follows:

Particulars                                             Amount ($)        

Sales revenue $(8600 + 10400)          $19000

Less: Credit card discounts

( contra - revenue)   $(8600 × 3%)         258

Sales discounts

( contra - revenue)

[(10400 - 500)× 1/2 × 0.01 ]                     49.50

Sales return and allowances

( contra - revenue )                                    500            

The net sale                                                                          

(reported on the income statement) =  $18192.50  

Answer:

5n=50d

Step-by-step explanation:

If n stands for the number of weeks and he is going to pay $5 per week, then the 5n go together and if the debt is 50, then it goes on the opposite side of the equal sign. I hope this helps!