help! i just need the answers. maybe some explanations would be good too :)

Help! I Just Need The Answers. Maybe Some Explanations Would Be Good Too :)

Answers

Answer 1

For Number one: -xy + 2x = 20, x = 5

To solve this, all we need to do is plugin 5 for every place we have x. So...

- (5)y + 2(5) = 20

-5y + 10 = 20

-5y = 10

y = -2

For number two: 4x - 3y - 10 = 1, x = -1

To solve this, we need to plugin -1 for all of the x variables. So...

4 (-1) - 3y - 10 = 1

-4 - 3y - 10 = 1

-14 - 3y = 1

-3y = 15

y = -5

For number three: 5x + 7y = -1, x = 4

We need to plugin -4 for all of the x variables. So...

5 (4) + 7y = -1

20 + 7y = -1

7y = -21

y = -3

For number four: x = 6 + xy, x = -3

Same as the other ones, just plugin -3 for all of the x variables. So...

-3 = 6 + (-3)y

-3 = 6 - 3y

-9 = -3y

3 = y

I hope this helps :)


Related Questions

Una familia pasa sus vacaciones en un camping. Un día el padre le dice a Pedro que vaya a la fuente a buscar exactamente 4 litros de agua. Ahora bien, Pedro no dispone más que de 2 recipientes: un cubo de 5 litros de capacidad un pote de 3 litros

Answers

Answer:

Primero Pedro va al río con ambos recipientes.

Pedro llena el cubo de 5 litros.

Ahora (usando el agua del cubo de 5 litros) él puede llenar el pote de 3 litros.

De esta forma ahora tendrá:

3 litros de agua en el pote de 3 litros.

5 - 3 = 2 litros de agua en el cubo de 5 litros.

Ahora pedro debe vaciar el pote de 3 litros.

Ahora pedro pone los dos litros de agua que quedaban en el cubo grande en el pote de 3 litros.

En este momento tenemos:

2 litros de agua en el pote de 3 litros.

0 litros de agua en el cubo de 5 litros.

Ahora pedro deberá volver a llenar el cubo de 5 litros.

Con este cubo lleno, el pondrá agua en el pote de 3 litros hasta que se llene. Pero el pote de 3 litros ya tiene 2 litros, es decir, Pedro solo debe usar un litro del cubo para llenarlo.

Una vez pedro usa un litro del cubo, el agua restante en este será:

5 litros - 1 litro = 4 litros.

En este momento pedro tiene 4 litros de agua en el cubo de 5 litros.

Entonces puede vaciar el pote de 3 litros y regresar con exactamente 4 litros.

A veterinarian office conducted a survey of the weight of dogs that came in for physicals. 55, 37, 8, 50, 60, 50, 48 Find the outlier:​

Answers

Answer:

8

Step-by-step explanation:

The outlier is the puece of data that is very different from the rest. If all of the numbers in this data were to be put on some sort of visualization, most of the numbers would be in a clump, while the 8 would be far from the clump.

the answer is 8 because when you plot the data it is the one really far away that skews the data

How do I solve 4y-gon. The answer is 360(2y-1) but I don’t know how to show my work for it

Answers

Answer

search how they got the answer

Step-by-step explanation:

A​ one-terabyte external hard drive is on sale at a ​25% discount. If the original price was ​$​347, what is the sale​ price?

Answers

Answer:

$ 260.25

Step-by-step explanation:

$ 347 multiply by 25% or 0.25

You get $ 86.75

Take $347 - $86.75 = $ 260.25

PLEASE HELP ME ON THIS QUESTION AND DONT GUESS ASAP!!!!!!!

Answers

Answer:

25 ft ........................

Answer:

25.13ft  or 25ft

Step-by-step explanation:

hope this helps :)

The value of an irrigational number expression is estimated to be between 18 and 19. Which could be the expression

Answers

the answer is A because 2 multiplied by 9 is 18

what is the hypothesis of a triangle with a base of 11cm and height of 9cm

Answers

Answer:

14.21 cm

Explanation:

you mean the hypotenuse* lol

the hypotenuse = √(11²+9²)

the hypotenuse = √(121+81)

the hypotenuse = √(202)

the hypotenuse ≈ 14.21 cm

Help I'll give Brainly

Answers

Answer:i think D

Step-by-step explanation:

Question 1 (2 point)
(16.02 LC)
Which shape can be classified as a rectangle? (2 points)
a
Rhombus
Сь
Square
c
Trapezoid
d
Parallelogram

Answers

Answer d parallelogram

Hiro has 5 kilograms of potatoes and 2 kilograms of onions. He plans to use 3.25 kilograms of potatoes and 550 grams of onions for a recipe. How many total kilograms of the produce will not be used

Answers

Answer: 3.20kg

Step-by-step explanation:

Hiro has 5 kilograms of potatoes and 2 kilograms of onions. The total kilogram of the produce will be:

= 5kg + 2kg

= 7kg

Since he plans to use 3.25 kilograms of potatoes and 550 grams of onions for a recipe. The total kilogram that he plans to use will be:

= 3.25kg + 0.55kg

= 3.80kg

Therefore, the total kilograms of the produce will not be used will be:

= 7kg - 3.80kg

= 3.20kg

Note:

1000grams = 1 kilogram

550gram = 550/1000 = 0.55kg

I need some help so here is picture

Answers

Answer:

C. sqrt3

Step-by-step explanation:

(1+2)^1/2 = 3^1/2 = sqrt3

PLSS HELPPPP(10 points)

Answers

Answer:

-9

Step-by-step explanation:

Okay I need help por fvaor

Answers

Answer:

523.6 (this answer is estimated)

Step-by-step explanation:

4/3*5^3*pi

Answer:

V = A ≈ 78.54 cm3 (E)

Step-by-step explanation:

Using the formulas above and additional formulas you can calculate the properties of a given circle for any given variable.

Calculate A, C, and d | Given r

Given the radius of a circle calculate the area, circumference and diameter. Putting A, C and d in terms of r the equations are:

A=πr2

C=2πr

d=2r

Calculate r, C, and d | Given A

Given the area of a circle calculate the radius, circumference, and diameter. Putting r, C, and d in terms of A the equations are:

r=Aπ−−√

C=2πr=2πAπ−−√

d=2r=2Aπ−−√

Calculate A, r, and d | Given C

Given the circumference of a circle calculate the radius, area and diameter. Putting A, r, and d in terms of C the equations are:

r=C2π

A=πr2=π(C2π)2=πC24π2=C24π

d=2r=2C2π=Cπ

Calculate A, C, and r | Given d

Given the diameter of a circle calculate the radius, area, and circumference. Putting A, C, and r in terms of d the equations are:

r=d2

A=πr2=π(d2)2=πd24

C=2πr=2πd2=πd

11. Given isosceles trapezoid ABCD with bases 6 and 16 and legs 13.
16
Find the height
17 Find the area

Answers

Answer:

round window has a radius of 18 inches. what is the circumference and approximate qrea of the window circumference What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is

What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is Choose...128136153258 in².

What is the area of this figure?

Drag and drop the appropriate number into the box.

What is the area of this figure?

Drag and drop the appropriate number into the box.

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is Choose...128136153258 in².

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is Choose...128136153258 in².

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is Choose...128136153258 in².

What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is

round window has a radius of 18 inches. what is the circumference and approximate qrea of the window circumference round window has a radius of 18 inches. what is the circumference and approximate qrea of the window circumference What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is Choose...128136153258 in².

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is Choose...128136153258 in².

What is the area of this figure?

Drag and drop the appropriate number into the box.

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is Choose...128136153258 in².

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is Choose...128136153258 in².

What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Drag and drop the appropriate number into the box.

A = 

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is

What is the area of this figure?

Select from the drop-down menu to correctly complete the statement.

The area of the figure is

round window has a radius of 18 inches. what is the circumference and approximate qrea of the window circumference What is the area of this figure?

Enter your answer as a decimal in the box.

  cm²

find the measure of each angle indicated?

help plz

Answers

Step-by-step explanation:

For first you can do like this:

Angle T you can get:

180°-(25°+55°)

180°-80°

100° Angle T

And Angle X is

180°- 100°= 80°

Second one:

First you need to find angle S and you do it like this:

180°-156°= 24°

Then angle R is:

180°-(24°+96°)= 180°-120°=60°

Hope this helps.

1.) Find the median -
HELP PLEASE ASAP PLEASE

Answers

-5+-5/2
-10/2
-5
This is the answer to ur question

8 1/2+6 1/2=





..........NO LINK

Answers

Answer:

15

Step-by-step explanation:

Answer:

The answer is 15.

Step-by-step explanation:

1) Add the whole numbers first.

[tex]14 + \frac{1}{2} + \frac{1}{2} [/tex]

2) Join the denominators.

[tex]14 + \frac{1 + 1}{2} [/tex]

3) Simplify.

[tex]14 + 1[/tex]

4) Simplify.

[tex]15[/tex]

Hence, the answer is 15.

Surface area can be measured in

Feet

Units

Square units

Meters

Answers

I think it’s square units

SOMEONE HELP ME NOW PLEASE NO LINKY LINKS

Answers

Answer:

C

Step-by-step explanation:

How many more people in the world speak Chinese than English ?

Answers

Answer:

Chinese speakers = 17

English speakers = 8

Difference = 17 - 8

Difference = 9

There will be 9 more Chinese speakers than English Speakers.

Step-by-step explanation:

Find the surface area of the prism

Answers

Answer:

[tex]400\ cm^2[/tex]

Step-by-step explanation:

1. Approach

The surface area of an object is the two-dimensional area around the object. If one was going to wrap the figure in paper, then the surface area would be the amount of paper one would need to cover the entirety of the object. To find the surface area of an object, calculate the area of each face of the object and then add up the results,

2. Find the area of each face

The area of all the rectangular faces can be found by using the formula to find the area of a rectangle, ([tex]length*width[/tex]). Substitute in each of the values,

[tex]17*7=119[/tex]

[tex]15*7=105[/tex]

[tex]8*7=56[/tex]

Now find the area of the triangular faces. This can be done by using the formula for the area of a triangle, ([tex]\frac{(length)*(width)}{2}[/tex]). Substitute in the given values,

[tex]\frac{(15)*(8)}{2}=60[/tex]

[tex]\frac{(15)*(8)}{2}=60[/tex]

3. Find the total surface area

Now add up the values of the area for each of the faces of the prism,

[tex]119+105+56+60+60[/tex]

[tex]=400[/tex]

HELP ME IN 3 AND 4 PLEASEEEEE

Answers

Answer:

3= 60 degrees

Step-by-step explanation:

Triangle= 180 degrees

60 degrees + 60 degrees = 120 degrees

180 degrees - 120 degrees = 60 degrees

Explain how to find the quotient of: (8a3+31a2-20a-5)/(8a-1)

Answers

Answer:

Quotient = a²+ 4a- 2

Step-by-step explanation:

(8a3+31a2-20a-5)/(8a-1)

 =

             a²  +4a-2     ⇒ quotient

(8a-1)√(8a3+31a2-20a-5)

              8a²- a²                  ⇒       Multiplying  (8a-1) by a²

             -     +        ⇒   Changing signs

                     32a²- 20a- 5                

                    32a²- 4a            ⇒   Multiplying  (8a-1) by 4a

                    -        +     ⇒Changing signs

                             -16a -5

                             - 16a +2          ⇒    Multiplying  (8a-1) by -2

                              +       -      ⇒  Changing signs

                                         -7  ⇒ Remainder

We follow the steps of simple division to get the quotient which is a²+ 4a- 2

We multiply  (8a-1) by factors such as a², +4a and -2 to get the same terms as given in the dividend.

The formula V = s3 give the volume V of a cube with side length s.

Answers

Answer:

8 inches cubed

Step-by-step explanation:

We get the formula in the task description:

V = s^3

The next sentence tells us s = 2in, so:

V = (2in)^3 = 8in^3

Answer:

8

Step-by-step explanation:

Formula: V = s³

Substitute: V = 2³

2³ = 2 · 2 · 2

Solve: V = 8

If the given side lengths of a triangle are 16 and 10 which can NOT be the third side?

A.21
B.22
C.25
D.27

Answers

I think the answer would be 16 and the reason why is because

The total of two sides of a triangle is always greater than the third side. Then the 27 can not be the side of the triangle, then the correct option is D.

What is the triangle?

Triangle is a polygon that has three sides and three angles. The sum of the angle of the triangle is 180 degrees.

If the given side lengths of a triangle are 16 and 10 units.

Then the third side will be

The total of two sides of a triangle is always greater than the third side, according to the triangle inequality theorem.

The Triangle is a polygon surrounded by three line segments.

Let x be the third side of the triangle.

10 + 16 > x

      26 > x

More about the triangle link is given below.

https://brainly.com/question/25813512

A company sells widgets. The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the given equation. Using this equation, find out the maximum amount of profit the company can make, to the nearest dollar. y=-x^2+62x-410

Answers

Answer:

$551

Step-by-step explanation:

Given the amount of profit, y, made by the company, is related to the selling price of each widget, x, by the equation y=-x^2+62x-410

The company make the maximum profit at when dy/dx = 0

dy/dx = -2x + 62

Since dy/dx = 0

0 = -2x + 62

2x = 62

x = 62/2

x = 31

substitute x = 31 into the expression y=-x^2+62x-410

y=-x^2+62x-410

y=-31^2+62(31)-410

y = -961+1922-410

y  = 551

Hence the maximum profit the company can make is $551

6.63 feet =yards
A 21
B 12
C 189
I'm not the smartest in math ​

Answers

The correct answer is A

Answer:

2.21 yd

Step-by-step explanation:

1 yard = 3 feet

6.63/3 = 2.21 yd

jack ran 1.5 kilometers on the treadmill, then walked 475 meters before running another 2.5 kilometers how many kilometers did jack do in all

Answers

we need first consider what data we have available:
a = run 1.5km
b = then run 2.3km
c = walk 475m
x = a + b + c = how many km he done on treadmill
before we go anywhere, we need to unify the units, we need to change meters to fraction of kilometers, kilo meant 1000, therefore:
1km = 1000m
475m / 1000m = 0.475km
now we can substitute:
x = a + b + c = 1.5km + 2.3km + 0.475km = 4.275km
we can round that up to first decimal point and then:
4.275km = 4.3km
answer is then:
jack done on the treadmill 4.275km or rounded up 4.3km

What is the Surface Area of the figure below?

A. 268 square inches


B. 134 square inches


C. 21 square inches


D. 240 square inches

Answers

Answer:

34.98 yds²

Step-by-step explanation:

To find surface area, we add together the area of each side. We have six sides, but there are three sets of identical sides, so it's easier to calculate.

We begin with the sides with dimensions 2.40 and 2.50. Multiply these together.

2.40 · 2.50 = 6

Since there are two of these sides, we can already say that the combined area of them is 12. So, we start the equation with 12.

Next, the two sides with dimensions 2.34 and 2.50. Multiply these together as well, to get 5.85. Multiply this by two to find the area of both sides, 11.7.

Add to our equation, for 12 + 11.7.

For the final two sides, we have the dimensions 2.34 and 2.40. Multiply to get 5.64. Multiply this again by two to find the area of both sides. We get 11.28. Add this to the equation as well, for 12 + 11.7 + 11.28= 34.98.

The answer is 34.98 yds². Good luck :)

Are the two triangles congruent ? Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!

Answers

Answer

YES

Step by step Explanation

Answer:

There is not information given to assume the triangles are congruent.

Step-by-step explanation:

You can tell if two triangles are congruent by any of the following rules:

Three sides are congruent (SSS),

Two angles and a side in between are congruent (ASA)

Two sides and an angle in between are congruent (SAS)

Two angles and a side connected to one of those angles are congruent (AAS)

Note: SSA (Two Sides & One Angle) does not work. I good way to remember is that it spells a bad word backwards :)

In this case, there are only two sides given, but there aren't any angles, so there is not enough information to conclude if they are congruent or not.

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