Mathematics High School

x = -1+y
2x - y = 0
All of this is one question it’s simultaneous equations. Can someone please help

Answers

Answer 1

Answer:

y = 2

Step-by-step explanation:

x= -1+y

2x-y=0

2(-1+y)-y=0

-2+2y-y=0

-2+y=0

-2+2+y=0+2

y=2

hope it's helpful ❤❤❤❤

THANK YOU.

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Answer 2

Answer:

[tex]2( - 1 + y) - y = 0 \\ - 2 + 2y -y = 0 \\ y = 0 + 2 \\ y = 2 \\ x = - 2[/tex]

Related Questions

Using {0,1,3,4,5,6,9}, how many four-digit numbers with different digits can be produced between 4000 to 5000, if the numbers must be divisible by 9?

Answers

Answer:18

Step-by-step explanation:

50 pts PLZ HURRY AND HELP IM TIMED
How many faces does the solid made from the net below have?
5
6
10
15

Answers

Answer: 10 is your answer

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

Just keep looking at the faces.

Hopefully im correct, this is my 1st one :)

when we ordered pizza, 75% of the class wanted pepperoni. of 21 people wanted pepperoni, how many people are in the class

Answers

Answer:

28 people

Step-by-step explanation:

Answer:

28

Step-by-step explanation:

Daniel goes to an amusement park. He spent $31.75 on the admission fee and $9.25 on parking. He also spent $5.50 on snacks at the park.

If a ticket for a ride costs $5.50, what were the maximum number of rides he could take if he had $79.50 in his pocket?

Answers

Answer:

783 espero ter ajudado Bon estudos

The number of bacteria in a petri dish culture triples every two days. Initially there were 250 bacteria present. Which equation models the number of bacteria B after T days?

A. B=250•3^t+2

B. B=250•3^2t

C. B= 250•3^t/2

D. B=250•3^t^2

please only respond if you know the answer :)

Answers

Answer:

B

Step-by-step explanation:

B = 250 * 3^2t

please help! (URGENT)

Answers

Answer:

x=8

Step-by-step explanation:

you gotta trust me bro its 8


please help me

give u 10pts ​

Answers

Answer:

The graph is not a function.

Step-by-step explanation:

Using the "vertical line test" to attach a vertical line to each of the points on the graph, we will find that the vertical line that passes through (0,0) has ot one, but two points on it. Remember, if the vertical line passes through more than one points, the graph is not a function. As we know, the vertical line passes through two points, those being (0, -4) and (0, -3). So, we can conclude that the graph is not a function.

CAN SOMEONE HELP ME PLEASEEE

Answers

Answer:

a. 45 degrees

b. 315 degrees

c. 8π

d. π

e. 7π

f. 16π

g. 2π

Is the equation y=3x in slope-intercept form? Explain. The equation y=3x in slope-intercept form. Question 2 The slope is and the y-intercept is a .

Answers

Given:

The given equation is

[tex]y=3x[/tex]

To find:

Whether the given equation is in the slope intercept form or not, then find the slope and y-intercept.

Solution:

Slope intercept form of a linear function is

[tex]y=mx+b[/tex]            ...(i)

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

We have,

[tex]y=3x[/tex]    

It can be written as

[tex]y=3x+0[/tex]               ...(ii)

On comparing (i) and (ii), we get

[tex]m=3,b=0[/tex]

Therefore, the given equations is in slope intercept form. The slope of the line is 3 and the y-intercept is 0.

The cost for an eighth-grade party is $450 for room rental, entertainment, and
decorations, plus $20 per person for food. Tickets for the party are sold for $25. What is
the break-even point?

Answers

how many people????????????

The number of inches in c feet is.

Answers

Answer:

this didn't make sense

Step-by-step explanation:

can u explain it again sorry

C= 100 in Roman numeral

HELP
HELP
ITS HARD
pls pls pls pls pls

Answers

you have to do the amount of hay one horse can eat times by how many horses there are. then you have to do that times the amount of days to see how much hay they ate overall. so that’s 21x20x14, which is 21(20x14) and that equals 5880. so the answer is C and the blank is 5880. hope this helps!

4x + 9y = 24
X + y = 10
Help ASAP

Answers

Answer:

14

Step-by-step explanation:

Answer:

(x, y) = (-16/5, 13[tex]\frac{1}{5}[/tex])

Step-by-step explanation:

4x + 9y = 24

x + y = 10 $\Rightarrow$ x = 10 - y

Substituting the value of x (second equation) into the first equation, we get:

4 * (10 - y) + 9y = 24

40 - 4y + 9y = 24

5y = -16

y = -16/5.

So, x = 10 - (-16/5) = 10 + 3[tex]\frac{1}{5}[/tex] = 13[tex]\frac{1}{5}[/tex]

Do anyone know this answers

Answers

Answer:A. 20 B. 70 C.20 D. 70 E. 70

Step-by-step explanation:

Hope this helps!

a:20
b:70
c:20
d:70
e:110

Step by step:

E + 70 = 180 thus, E = 110

A + 70 = 90 thus, A = 20

A + B = 90 thus, B = 70; because A would be equal to 20

B + C = 90 thus, C = 20; because both sides are 90 degrees

E + D = 180 thus, D = 70; because E would be equal to 110

If a retailer has an item that is priced at $3.54 and wants to sell it for 20% less, the markdown will be _____.

Answers

Answer:

KNMOJAO0 GPR5PWQ3]

Step-by-step explanation:

vgjaseh jvgofrAQ vfjswA

Answer:

:)

Step-by-step explanation:

well if u take 3.54 x 20%, you get 0.708 or 70 cents.. so i’m guessing 70 cents.

In WXY y=3.6 w=6 and X=147

Answers

Answer:

[tex]wxy = 6 \times 147 \times 3.6 \\ = 3175.2[/tex]

give me the most DETAILED explanation.

6 + 6 - 6 x 6 ÷ 6 = ?

Answers

6+6-6*1

6+6-6

12-6

6 is the answer

Renee is creating a diagram to prove that a certain triangle is a right triangle. In her diagram, she uses three white quadrilaterals that are squares. Which diagram could be the one that Renee is creating

Answers

Answer:

Option D

Step-by-step explanation:

A triangle is a polygon with three sides and three angles. Types of triangles are right angled triangle, scalene triangle, equilateral triangle and isosceles triangle.

A right angled triangle is a triangle in which one of the angles is 90°. The side opposite the 90° is known as the hypotenuse while the remaining sides is known as the leg. Let us assume a right triangle with legs of a, b and a hypotenuse of c. Then using Pythagoras theorem:

c² = a² + b²

From the options, option d is the correct option.

For option D, the hypotenuse is c and one leg is a. Let x represent the second leg. Hence:

c² = a² + x²

x² = c² - a²

x = √(c² - a²)

Therefore the other leg would be √(c² - a²)

hiiiii! ok plz plz help!!!! i’ll mark brainlist first answer! also know that ur worth every breath! <3

marco and his friends brought game tokens for $15 and three admission tickets to fun palace. let t represent the cost of an admission ticket. determine if each statement below is true or false.

b. if each admission ticket costs $2.50, then marco and his friends spent $22.50 in all. TRUE OR FALSE????

Answers

Answer: True

Step-by-step explanation:

Cost = 15 + 3t

22.5 = 15 + 3(2.5)

22.5 = 15 + 7.5

22.5 = 22.5 <— true

Answer:

true

Step-by-step explanation:

2.50 x 3 = 7.50

15 + 7.50 = 22.50

22.50 = 22.50

1) the volume of right circular cone is 9856cm² . if the diameter of the base is 28cm , find height of cone .​

Answers

The height would be 48.02

Help This isnt super hard but yeah

Answers

Answer:

Kappa

Step-by-step explanation:

The y-intercept is the start weight. Mochi is 1 and Kappa is 2.

Hope this helps.

Kappa is heavier. He weighed 2 pounds at birth, while Mochi weighed only 1 pound

HELP me help help help help

Answers

2x+79+32=180
2x+111=180
2x=69
x=34.5

Answer:

(I'll edit this when I get home with the answer)

Step-by-step explanation:

As you see here, draw a line like that, and than each of those 2 triangles have 3 angles that get to 180° in total, so just make an equation of the 3 angles that equals to 180° and than solve for the variable there

) Multiply. What is the product
(3 x 10^9) * (2 x 10^17) in scientific notation?​

Answers

Answer:

6 ×10^26

hope it helped

have a good day mate

Answer:

6x10^26

Step-by-step explanation:

Geometry Substitution

I’m confused on how to substitute can someone give me a step by step explanation! Please

Answers

Answer:

x = 3

Step-by-step explanation:

I have attached a picture of me explaining you step by step.

Hope this helps, thank you !!

a 24 ft ladder is leaning against a 20 ft building, what is the distance between the bottom of the ladder and the base of the building?

Answers

The distance at the base is 4 feet. Hope this helps.

Pleaseeee help !!!!!!​

Answers

Answer:

Step-by-step explanation:

its B

Answer:

b

Step-by-step explanation:

3(9x + 14) = 3 * 9x + 3 * 14 = 27x + 42

What’s the value of x

Answers

Answer:

C. x=42

Step-by-step explanation:

16 + 3x + y = 180

126 + 16 + y = 180

y = 38

16 + 3x + 38 = 180

54 + 3x = 180

3x = 126

x=42

The ratio of the measure of the three angles of a triangle is 3:4:8. Find the mesure of the large angle

Answers

Answer:

96°

Step-by-step explanation:

Ratio of angles :

3 : 4 : 8

Sum of angles in a triangle = 180°

The value of the largest angle = angle with the largest ratio

This is the value of the angle with ratio 8

Sum of ratio : (3 + 4 + 8) = 15

Hence,

(8 / 15) * 180°

(8 * 180°) / 15

1440 / 15

= 96°


On Tuesday Gabriella bought ten posters, On Wednesday half of all the posters that she had were destroyed.
On Thursday there were only 19 left. How many did she have on Monday?

Answers

28 posters
May God bless you and your family

A vendor sells hot dogs and bags of potato chips. A customer buys 3 hot dogs and 5 bags of potato chips for $9.50. Another customer buys 2 hot dogs and 5 bags of potato chips for $8.00. Find the cost of each item.

Answers

Step-by-step explanation:

3d + 5p=9.50

2d + 5p=8

1 hot dog cost $1.50

2 × 1.50 + 5p = 8

3 + 5p = 8

5p = 8 - 3

5p = 5

p = 1

1 bag of potato chips cost $1.00

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