Mathematics College

Graph. Identify the solution:
1) x + y = 2
X-y=4

Answers

Answer 1
(3,1) and hope this helps
Graph. Identify The Solution:1) X + Y = 2X-y=4
Answer 2

Answer:

X=3 y=-1

Step-by-step explanation:

X+y=2

X-y=4

so that means

y=X-4

substitute it in

X+X-4=2

2x-4=2

2x=2+4

2x=6

x=3

3+y=2

3+-1=2

y=-1

ways to check

3--1=4

double minus equal plus

3+1=4

Related Questions

John works two jobs. He earns $10 an hour babysitting his neighbor's children and $15 an hour mowing lawns in his neighborhood. Last week he worked a total of 20 hours and earned a total of $240.



Drag and drop numbers in the boxes to create an equation which models this situation if x = the number of hours he spent babysitting and y = the number of hours he spent mowing lawns last week.

Answers

add up all the numbers

The number of hours he spent babysitting is 12 hours and the number of hours he spent mowing lawns last week is 8 hours.

What is an equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Given that, John works two jobs. He earns $10 an hour babysitting his neighbour's children and $15 an hour mowing lawns in his neighbourhood. Last week he worked a total of 20 hours and earned a total of $240.

Let the x be the number of hours he spent babysitting and y be the number of hours he spent mowing lawns last week,

Establishing the equation, we get,

x+y = 20

x = 20-y......(i)

10x+15y = 240.......(ii)

Using the equation (i) in (ii), we get

10(20-y)+15y = 240

200-10y+15y = 240

5y = 40

y = 8

Put y = 8 in eq(i)

x = 20-8

x = 12

Hence, the number of hours he spent babysitting is 12 hours and the number of hours he spent mowing lawns last week is 8 hours.

For more references on equations, click;

https://brainly.com/question/29657983

#SPJ6

Linda has a watering can with a capity of 3 liters. Each day, her plants need 6,000 milliliters of water. How many times does Linda have to fill her watering can to water all of her plants daily?

Answers

Answer:

2 times each day

1 liter is 1000 milliliters

the watering can has a capacity of 3 liters which is 3000 milliliters

her plants need 6,000 milliliters of water each day which means that she will need to fill her watering can twice a day.

The diameter of a round rug is 42 inches. What is the approximate area of the rug?
A. 5,539 square inches
B. 10 square inches
C. 38 square inches
D. 1,385 square inches

Answers

Answer:

D, It would be 1,385 Square Inches

Step-by-step explanation:

help me I need an answer ​

Answers

The answer would be 1 and 3 because they both add up to 90 degrees but are not adjacent

Hope this helps

Have a great day/night

What is y=- x +3 in standard form using integers?

Answers

Answer:

x+y = 3

Step-by-step explanation:

Please help ASAP!!! And explain how you did it too :,)

Answers

the ans wer is sorry i a. dkdid
answer: 28

im not sure but i hope someone can explain

You're a contestant on a TV gameshow where you must choose between four identical looking suitcases containing $100, $100, $300, and $400. You start by randomly picking one suitcase. The host then opens the remaining suitcase with the lowest dollar amount. Now, you have the choice to keep your current suitcase or switch to one of the two remaining suitcases. With probability p= 0.7, you keep your original suitcase and open it. Otherwise, you are equally likely to choose either of two the remaining suitcases and open it. You win the money in the suitcase you opened.

Consider these events:
Ai is the event that the first suitcase you choose is worth i dollars.
Hi is the event that the host opens a suitcase worth i dollars.
Wi is the event that you win i dollars.

If you play this game five times, the probability that the event W400 occurs twice in five trials is:_______

Answers

Answer:

0.2990 = 29.90%.

Step-by-step explanation:

For each trial, there are only two possible outcomes. Either you win $400, or you do not. Trials are independent. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

Probability of winning $400 in a trial:

1/4 probability of choosing the suitcase containing $400, and in this case, 0.7 probability of keeping it.

3/4 probability of choosing another suitcase. Then, 0.3 of 3/4 probability of changing the suitcase, and 0.5 of 0.3 of 3/4 probability of getting the suitcase containing $400. So

[tex]p = \frac{1}{4}*0.7 + \frac{3}{4}*0.3*0.5 = 0.25*0.7 + 0.75*0.15 = 0.2875[/tex]

If you play this game five times, the probability that the event W400 occurs twice in five trials is:_______

This is P(X = 2) when n = 5. So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 2) = C_{5,2}.(0.2875)^{2}.(0.7125)^{3} = 0.2990[/tex]

The probability is 0.2990 = 29.90%.

Select two expressions that are equivalent to 2+b+b

Answers

Answer:

3x + 5 ( -4x + 12 ) - ( x - 3 )

A. -18x + 63

B. 18x - 63

C. 3x - 20x + 60 - x + 3

D. 3x + 20x + 60 - x - 3

Answer:

a and b is the answer hope this

Step-by-step explanation:

.

helps

4. What is the circumference of a circle with a radius of 4 cm?

Answers

Answer:

25.13

Step-by-step explanation:

2 π r

2 x π x 4 =25.13

if Rohans weight is t+6 kg and is 7 kg less than Rahul whose weight is 54 kg. What is the value of t​

Answers

Answer:

T = 41

Step-by-step explanation:

Rohan's weight  = t+6

Rahul's Weight  = t+6+7 = 54

t = 54 - 6 - 7

t = 41

If you are given side lengths of 6 cm and 9 cm and a 70 angle, Can you form

a. Unique triangle
b. More than one triangle
C. No triangle

Answers

a. Unique triangle of a 70 Angle, 6 cm, and 9 cm.

A table is on sale for $289, which is 32% less than the regular price.
What is the regular price?

Answers

Answer:

[tex]R = \$903.125[/tex]

Step-by-step explanation:

Given

[tex]Selling\ Price = \$289[/tex]

[tex]Rate = 32\%[/tex]

Required

Determine the regular price (R)

From the question, we understand that:

[tex]R * 32\% = \$289[/tex]

So, we have:

[tex]R * 0.32 = \$289[/tex]

[tex]R = \frac{\$289}{0.32}[/tex]

[tex]R = \$903.125[/tex]

Hence, the regular price is $903.125

100POINTS! SHOW WORK OR I REPORT

Answers

A ------- M -------- B

AM = 65

AB = 12x+40

AM + BM = AB

65 + X = 12x+40

65-40 = 12x-x

15 = 11x

x = 1.36

But in the question he should gave you BM
A-M-B

If M is the midpoint then then AM is AB/2

[tex]\\ \sf\longmapsto \dfrac{12x+40}{2}=65[/tex]

[tex]\\ \sf\longmapsto 12x+40=65(2)[/tex]

[tex]\\ \sf\longmapsto 12x+40=130[/tex]

[tex]\\ \sf\longmapsto 12x=130-40[/tex]

[tex]\\ \sf\longmapsto 12x=90[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{90}{12}[/tex]

[tex]\\ \sf\longmapsto x=7.5[/tex]

Brandy needs 1/4 tsp of
vanilla extract to make
2 dozen cookies. How
many teaspoons will
she need o make 5/2
dozen cookies?

Answers

Answer:

2/4 + 1/8................

here is a scale drawing of a garden. Tom wants to plant A tree in the garden according to the following rules it must be 6 m from A and 5 m from B. Place a cross where Tom can plant the tree

Answers

Make a circle with centre A and radius 3cm and make another circle with centre B and radius of 2.5cm. After that just mark the a cross where both circle intersects. Hope you understand

A math question I need help in

Answers

The answer will be A

What does it mean to be a Rigid Motion?​

Answers

Answer:

Rigid Motion: Any way of moving all the points in the plane such that. a) the relative distance between points stays the same and. b) the relative position of the points stays the same. There are four types of rigid motions that we will consider: translation, rotation, reflection, and glide reflection.

~Sophia


Mica read 1/6 of a book on Monday and 3/8 on Tuesday. Susan read 5/6 of the same book.
How much more of the book has Susan read than Mica?

A. 14/24
B. 8/24
C. 7/12
D. 7/24

Answers

A because u first find the lcm of 6&8 which is 25 and for the first fraction u do 6x4=24 and then u do 8x3=24 and then u add those two and get A

What is the rate of return when 30 shares of Stock
A, purchased for $15/share, are sold for $480? The
commission on the sale is $6.
Rate of Return = [?] %
Give your answer as a percent rounded to the
nearest tenth

Answers

Answer:

5.1%

Step-by-step explanation:

We are told that 30 shares of Stock are purchased for $15/share..

This gives a total value of: 30 × 15 = $450.

Now,they are sold for $480 with a commission of $6. This means the final money getting to the seller is; 480 - 6 = $474.

Thus; rate of return percentage = (474 - 450)/474) × 100% = 5.06%

To the nearest tenth gives; 5.1%

The rate of return is 5.1%.

Given that,

A, purchased for $15/share, are sold for $480.The  commission on the sale is $6.

Based on the above information, the calculation is as follows:

The total value should be

[tex]= 30 \times 15[/tex]

= $450.

Since it is sold for $480 along with commission of $6 so final money should be  

= 480 - 6

= $474.

Now rate of return is

[tex]= ((474 - 450)\div 474) \times 100%[/tex]

= 5.06%

= 5.1%

Learn more: brainly.com/question/17429689

Does anyone know the answer to this ?

Answers

Answer:

2.5mph

Step-by-step explanation:

S = Distance divided by Time (S = D/T)

Therefore.

S = 15/6

=2.5 mph

Colin walked an average speed of 2.5mph

Answer:

the answer is 2.5 mph

Step-by-step explanation:

speed= distance/time

speed=15/6

15 divided by 6 = 2.5

2/7 divided by 6 can you answer my question

Answers

1/21 simplified fraction form and the decimal form is 0.0476

Answer:1/21

Step-by-step explanation:

Express the interval shown on the number line in interval notation.

Answers

Answer:

[-7, infinity)

Step-by-step explanation:

solid dot on -7 so [

arrow is to positive infinity

infinity always use )

What is the solution to -4(8 - 3x) 6x - 8?

Help

Answers

Answer:

-40+ 72x

Step-by-step explanation:

-32+12x ×6x-8

-32-8 +12x× 6x

-40 +72x

((-4(8-3x))(6))^(x)-8.

=72x^2 - 192x - 8

Questions
25/(4+1) .
3+(6-1)

Answers

Answer:

Step-by-step explanation:

[tex]1) \frac{25}{(4 + 1)}=\frac{25}{5}=5\\\\2) 3 + (6-1) = 3 + 5 = 8[/tex]

There is a bag filled with 3 blue and 4 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is replaced.
Another marble is taken at random.
What is the probability of getting 2 of the same colour?

Answers

Answer:

45%

Step-by-step explanation:

Grandma has 4 bags of soil for her flower pots each flower pot needs 3/4 of a bag of soil how many flower pots can she fill

Answers

Answer:

5

Step-by-step explanation:

3/4 3/4 3/4 3/4= 4 + 1/4 + 1/4 + 1/4 + 1/4 = 1 = 5 1/4

Since you need 3/4 to fill a pot the answer is 5. WIth 1/4 left over

Brainliest please

Answer:

5 [tex]\frac{1}{3}[/tex]

Step-by-step explanation:

Total no: of bags = 4

A mount each pot needs = 3/4

No: of pots it can fill = 4 ÷ 3/4  = 4 x 4/ 3 = 16/ 3 = 5 [tex]\frac{1}{3}[/tex]

Is it right?

7.1 x 10-^2 in scientific notation

Answers

Answer:

71*10⁻³

Step-by-step explanation:

7.1 x 10-^2 = 7.1*10⁻² = 71*10⁻³

6/9×4/7 WHOEVER ANSWERS IN UNDER 2 MINUTS I WILL MARK BRAINLIEST

Answers

Answer: 380952381 / 1000000000

Step-by-step explanation:

:)P.s. This simplifies to 8/21 .

Answer:

8/21

Step-by-step explanation:

Miguel is posting photos on a school website. He has 48 photos, and he is allowed to use 12 pages. He wants to put the same number of photos, p, on each page.

1.) 48p = 12
2.) 12 + p = 48
3.) 12p = 48
4.) 48 = p - 12
​

Answers

Answer:

The answer is 3.)

Step-by-step explanation:

Answer:

3. 12p = 48

Step-by-step explanation:

Start with 12p = 48

Your goal is to find the number of photos, p, that can go on each page. To do this, you need to isolate p (in other words, get p by itself)

Divide both sides by 12 and you end up with:

p = 4

if susan, janice, and melvin take 2.0 hours to walk to their school at a rate of 1.0 m/s, how far is their school from their house?

please help me huhu​

Answers

Answer:

7.2 km

Step-by-step explanation:

Given that:

Hours taken = 2 hours

Walk rate = 1 m/s

Distance = Speed * time

Time taken in seconds = 2 * 60 * 60 = 7200 s

Hence,

Distance = 1 m/s * 7200s

Distance = 7200 meters

Distance in km = 7200 / 1000 = 7.2 km

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