Mathematics High School

X-4y=15 and 8x-5y=42

Answers

Answer 1

Answer:

y=-2 8/9

x=31 1/2

Step-by-step explanation:

x-4y=15 --> x=4y+15

8x-5y=42

8(4y+15)-5y = 42

32y +120 - 5y = 42

27y = -78

y=-2 8/9

x=31 1/2

Related Questions

If you can, please help me! I'll give brainliest (if I can.)​

Answers

Answer:

The intersection of the sets A, B, and C is Bird.

Set B contains Fish, Lizard, Turtle, Bird, and Dog.

find the two square roots of 400

Answers

Answer:

20 and -20

20^2 = 400

(-20)^2=400 since two negative is positive

-20 & 20 .. hope this helps a lot ;)

Can someone plz help me with this????

Answers

what information are you given??

Answer:

since we cant see what info is given maybe these tips can help...

the 'b' is also called the y-intercept, the y-int is what you start of with. Example, if your parents give you $20 and you spend $5 every week, your y-int is 20

The m is the slope, so if your parents give you $20 and you spend $5 every week, your slope is -5 because your money is decreasing at a linear rate

the x is the input, so if you want to know how much money you have 2 weeks after you got $20, you would substitute x with 2, and solve to get $10

5 is not more than x

Answers

Answer:10

Step-by-step explanation: 5 + x is 10 because x is a verable

help pls i didn't put the question fully on the last question:/
Find the decimal that is equivalent to: 17/12



A. 1.714
B. 0.583
C. 0.0583
D. 0.583 repeating

Answers

no of those are correct it would be 1.416 repeating

please help me with this!!!

Answers

581

10x14x8.3 = 1162
1162 divided by 2 = 581

A car can travel 480 miles on a full tank of petrol. The tank holds 60 litres. The fuel gauge shows there and 15 litres left in the tank. How many more miles can the car travel before it runs out of petrol?

Answers

Answer:

Miles= 120

Step-by-step explanation:

Giving the following information:

A car can travel 480 miles on a full tank of petrol. The tank holds 60 liters.

First, we need to calculate the miles per liter:

Miles per litre= 480 / 60

Miles per litre= 8 miles

Now, the miles that can be driven with 15 liters:

Miles= 15*8

Miles= 120

Create a 5th degree trinomial that has a constant term of 3.

Answers

Answer:

[tex]2x^5+3x^2+3[/tex] is a trinomial having with:

three terms degree 5 and The constant term '3'

Step-by-step explanation:

Considering the trinomial

[tex]2x^5+3x^2+3[/tex]

Any polynomial with 3 terms is a trinomial, so it is a trinomial.

It is clear that '5' is the highest power of the 'x' variable. so, the polynomial has a degree of 5.

'3' is the constant term. The reason is that any term with no variable is called a 'constant' term. So, '3' is the constant term.

Therefore, [tex]2x^5+3x^2+3[/tex] is a trinomial having with:

three terms degree 5 and The constant term '3'

simplify the square root of 272​

Answers

If you are looking for the square root, which I’m assuming. It’s 4 square root of 17, or 16.492

Now first tell me whts 9.6- 26.8
but I already kno!

Answers

Free variably points -17.2

What is the slope of a line perpendicular to 3Y + 6X = 12?
Select one:
a. -2
b. 2
c. 1/2
d. -1/2
e. 1/6

Answers

The answer is c. 1/2
C 1/2 hope this helps!!!!!!

Five different awards are to be given to three students. Each student will receive at least one award. In how many different ways can the awards be distributed?

Answers

Answer:

Two ways

Step-by-step explanation:

Blue is students and Yellow is the trophies.

Total number of different ways that the awards can be distributed is; 150 ways.

It is clear from the question that the awards and the students are different. Now, each student will receive at least one award.

This means that the five different awards could be separated into;

3 + 1 + 1 awards or 2 + 2 + 1 awards.

Now, for one person to get 3 awards and the other 2 people to get one award each, the number of ways is calculated as;

       ⁵C₃ × 3! = 60 ways

Now, for the case where one person is to get 1 award and the other 2 people to get two awards each, the number of ways is calculated as;

      ((⁵C₂ × ³C₂)/2) × 3! = 90 ways

Thus; total number of ways the awards can be distributed = 60 + 90 = 150 ways.

Read more at; https://brainly.com/question/20373683

Tai’s baby brother weighs 3,745 grams. What is his weight in kilograms?
A. 0.3745 kg
B. 3.745 kg
C. 37.45 kg
D. 374.5 kg

Answers

convert grams to kilograms :
3745g/1000 = 3.745kg
ans is B

A local specialty store sells two brands of yogurt. Brand A is a fruit yogurt that comes in a 12-ounce container for $2.88. Brand B is a fruit yogurt that comes in a 16-ounce container for $4.48. Which one is a better buy: Brand A or Brand B?

Answers

Answer:

0.04

Step-by-step explanation:

Brand A:

so x is equal to 0.24

Brand B:

so x is equal to 0.28

Now the difference of cost would be Brand B - Brand A which would give you 0.04.

What is the binary number for 14​

Answers

Answer:

Step-by-step explanation:

should be 1110

Answer:

1110

Step-by-step explanation:

PLEASE HELP
In Exercises 1 and 2, identify the slope of the line. Then identify a point the line
passes through.
1. y - 2 - 4(x - 5)
2. y - 7 - -3(x + 6)

Answers

Answer:

1.  Slope = 1/4  

   Point = ( 1, 1 )

2. Slope = -3

    Point = ( 3, -20 )

Step-by-step explanation:

good night everyone!!!

Answers

Answer:

Sleep well

Step-by-step explanation:

Thank u so much... And thk for the FREE POINTS... <3

Will give Brainliest and 50 points question above

Answers

Answer:

12.something units squared

Step-by-step explanation:

Answer:

12.something units squared

Step-by-step explanation:

On Friday Simon ate three tenths of a kg of cherries. On Saturday, he ate half of a kg of cherries. What amount of cherries are left now if he had one kg of cherries ​

Answers

Answer:

1/5 kg

Step-by-step explanation:

Initial amount = 1 kgEaten on Friday = 3/10 kgEaten on Saturday = 1/2 kg

Amount of cherries left:

1 - (3/10 + 1/2) = 1 - (3/10 + 5/10) = 1 - 8/10 = 2/10 = 1/5 kg

Selena made pancakes for an all day breakfast fundraising event she made 132 pancakes in 4 hours Selena needs to make 264 more pancakes if she continues at the same rate how many hours will it take for Selena to make 264 more pancakes

Answers

Answer:

8 hours

Step-by-step explanation:

132 pancakes → 4 hours

264 pancakes → (4/132 x 264) hours = 8 hours

11/12 - (-10)- 5/6 please help

Answers

Answer:

121/12 is the answer your welcome

1)There are whole numbers that are not integers.
true or false

2)All rational numbers are whole numbers.
true or false


3)All integers are whole numbers.
true or false

4)All integers are rational numbers.
true or false

Answers

Answer:

1).false 2). false 3).true 4). true

Step-by-step explanation:

1).All whole numbers are integers, so s...” That's right! All whole numbers are integers, so since 0 is a whole number, 0 is also an integer.

3).. Integers include all whole numbers and their negative counter part e.g. … -4, -3, -2, -1, 0,1, 2, 3, 4,… Where a and b are both integers. is a rational number but not an integer. 4). All integers are rational number. Since we can rewrite an integer into a fractional form by diving it by 1. For example, 4=41 4 = 4 1 . But not all rational numbers are integer.

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[tex]

1) \: \: \: \: False[/tex]

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[tex]

2) \: \: \: \: False[/tex]

[tex]Exam)\frac{1}{2} \: \: is \: \: rational \: \: but \: \: it \: \: is \: \: not \: integer \\ [/tex]

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[tex]

3) \: \: \: False[/tex]

[tex]Exam)- 1 \: \: is \: \: integer \: \: but \: \: it \: \: is \: \: not \: \: whole \: \: number \\ [/tex]

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[tex]4) \: \: \: \: True[/tex]

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6x + 1 = -6(1-x) please show work i need what is x

Answers

Answer:

Step-by-step explanation:

6x+1=-6(1-x)

6x+1=-6+6x

6x+7=6x

7=0

no solution

28 divided 3.5
help meh plz

Answers

Answer:

8

have a good day! :)

Passed with 100%
Tak
1.
Set up, but do not solve, an equation to
determine the value of x in the diagram
below.
3x-35
4x+40

Answers

I would answer this but I am not sure

What are the negative and positive coterminal angles of 240 degrees?

Answers

-120 negative and 600 positive.

The negative and positive coterminal angles of 240 degrees will be -120 negative and 600 positive.

What are coterminal angles?

Two different angles that have identical starting and ending edges are termed coterminal angles however since one angle is measured clockwise and the other is determined counterclockwise, the angles' terminal sides have completed distinct entire rotations.

We have to find the coterminal angles of 240 degrees

Coterminal angles are those whose initial and terminal sides coincide. Depending on whether the given angle is in degrees or radians, adding or subtracting 360° or 2 from each angle yields the coterminal angles. There are countless coterminal angles that can be discovered.

Thus, the negative and positive coterminal angles of 240 degrees will be -120 negative and 600 positive.

Learn more about the coterminal angles here:

brainly.com/question/23093580

#SPJ6

HELP! Quickly! I need this ASAP

Answers

Answer:

y=10x+5

Step-by-step explanation:

y1-y2/x1-x2

5-15/0-1

-10/-1

10

The slope is 10

when the x is zero, y is 5 therefore 5 is the Y-intercept

y=10x+5

~PumpkinSpice1♥

4) Janet runs half a mile in 1/3 of an hour.
How many miles can she run in one hour?
How far can she run in 4 hours?
I

Answers

.5 miles * 3 =
First answer: 1.5 miles in an hour

1.5*4=
Second Answer: 6 miles in 4 hours

Answer:

5 miles

Step-by-step explanation:

Which expression is equivalent to 6(3x + 4)?
1: 18x + 4
2: 18x + 24
3: 9x + 10
4: 9x + 4

Answers

Answer:

2. 18x + 24

Step-by-step explanation:

Distribute the 6 to create 18x + 24

18x+24
Multiple 6 to both 3x and 4.

What is y+3=7(x-2) written in standard form?

Answers

Answer:

7x-y=17

Step-by-step explanation:

Answer:

7x-y=17

Step-by-step explanation:

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