3x - 5y = 4
-2x + 6y = 18

Answers

Answer 1

Answer:

From 1st eqn .,

3x=4+5y

X=4+5y/3

From 2nd eqn ..,

-2x+6y=18

-2(4+5y/3)+6y=18

-8+10y/3 +6y=18

-8+10y+18y/3=18

-8+28y/3=18

-8+28y=54

28y=54+8

y=62/28

y=31/14

Therefore the value of y is 31/14

Again,

Putting the value of y in ..

X=4+5y/3

=(4+5*31/14)/3

=(211/14)/3

=211/42

Step-by-step explanation:

So the value of X and y is 31/14 &211/42 respectively.

Plz mark me brainest .

Answer 2

Answer:

x=14:25;convert to whole number 14:y=7:75; convert to whole number is 7

Step-by-step explanation:

using determiner method {x=3and-2;y=5and6}=4and18; solution cross multiple 3×6-5×6=general determiner is 28; to solve for x exchange for the number for x with the number outside which is 4;18


Related Questions

[tex]\sqrt3+2\sqrt2 - \sqrt6-4\sqrt2[/tex]

Answers

sorry but those are square roots i was in a rush this is the answer

In the algebraic expression 5x + 8y – 12z, the values 5, 8, and –12 are _____

Answers

Answer:

Coefficients!!!

Step-by-step explanation:

They're numbers that are multiplied by a variable.

Answer:

Step-by-step explanation:

I believe the answer would be coefficients. Coefficients are the number that is being multiplied by the variable.

1p
Oliver paid $21 for 6 t-shirts. Each shirt was the same price. What was the
cost of 1t-shirt?
$2.00
$2.50
$3.00
$3.50

Answers

Answer:

One t-shirt would cost $3.50

Step-by-step explanation:

$21 / 6 t-shirts = 3.50 each

Answer:

3.50

Step-by-step explanation:

6(2) = 12

6(2.50) = 15

6(3) = 18

6(3.50) = 21

If he paid $21 for 6 t-shirts and each t-shirt was the same price...then the cost of 1t-shirt was $3.50. If you want to double-check this, divide $21.00 by $3.50 and you should get 6 as the answer!

9b-27= 3(2b-8)+2b solve for b


please show work on how you found b

Answers

Answer:  b = 3

Step-by-step explanation:

9 − 27 = 3(2 − 8) + 2

9 − 27 = 6 − 24 + 2

9 − 27 = 6 − 24+ 2

9 − 27 = 8 − 24

9−27=8−24

9−27+27=8−24+27

9 = 8 + 3 ------Subtract 8b from both sides

b = 3

There is a raffle at a hockey game and 125 tickets are sold. Maris bought 3 tickets. What percent of the tickets
does Maris have?

Answers

Answer:

2.4%

Step-by-step explanation:

Answer:

2.4 percent

Step-by-step explanation:

Solve for B
A=3B+4C
B=?​

Answers

Answer:

[tex]3b + 4c = a[/tex]

[tex]3b = a - 4c[/tex]

[tex] \frac{3b}{3} = \frac{a}{3} + \frac{ - 4}{3} [/tex]

[tex] \frac{3b}{3} = \frac{a}{3} + \frac{ - 4c}{3} [/tex]

[tex]b = \frac{a}{3} + \frac{ - 4c}{3} [/tex]

[tex]b = \frac{a}{3} - \frac{4c}{3} [/tex]

Step-by-step explanation:

Thanks!!!!!

Which of the following systems of inequalities has no solution?

Answers

Answer:

c

Step-by-step explanation:

See the attached graph.  There's no overlap between the two individual solution sets.

HELP

Convert log xy = 1/2 to exponential form

a. x^y=1/2

b. y^x=1/2

c. square root of x=y

d. square root of y=x

Answers

Logxy =1/2

10^1/2=xy
Square root of 10=xy

Answer:

Logxy =1/2

Step-by-step explanation:

Find the value of X.

Answers

Answer:

X=25

Step-by-step explanation:

The angle of (x+30) is the same as the angle of 55. Simply subtract 30 from 55.

DAY 5: 10/28-29/21
8.6.7
21. On a farm, a pigpen is 35 yards from a chicken coop, the chicken coop is 60 yards from a cow
pasture, and the distance between the pigpen and the cow pasture is 95 yards. Which
statement is true?
A
The distances between the pigpen, chicken coop, and cow pasture do not form a right
triangle because 35 + 60 # 95.
B
The distances between the pigpen, chicken coop, and cow pasture do not form a right
triangle because 352 + 602 7952.
The distances between the pigpen, chicken coop, and cow pasture form a right triangle
because 35 + 60 = 95.
с
D
The distances between the pigpen, chicken coop, and cow pasture form a right triangle
because 352 + 602 = 952.

Answers

Answer:

A

Step-by-step explanation:

Several years ago, Winston invested in some gold. Gold is currently valued at $546 per ounce, which is 30% more than Winston originally paid for it. What was the purchase price of the gold?

Answers

Answer:

420

Step-by-step explanation:

130/100x = 546

x=54600/130

x=5460/13

x=420

You pull horizontally on a 50-kg crate with a force of 450 n and the friction force on the crate is 250 n. the acceleration of the crate is​

Answers

Hello AljakeVillena!

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

You pull horizontally on a 50-kg crate with a force of 450 n and the friction force on the crate is 250 n. the acceleration of the crate is ?

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

Given,

mass of crate = 50 kgForce you pull it with = 450 NFrictional force = 250 NAcceleration = ?

__________________

Let's first find the total force/net force acting on the crate. The total force will be :-

450 N - 250 N = 200 N.

We subtracted the forces because both the forces act on opposite directions.

__________________

Now, let's find the acceleration of the crate. To find the acceleration we must divide the net force by the mass. So,..

Acceleration = Force/massa = F/ma = 200/50a = 4 m/s²

__________________

So, the acceleration of the crate is 4 m/.

__________________

Hope it'll help you!

ℓu¢αzz ッ

Force is mass times acceleration for linear motion. The acceleration of the crate in considered situation is  4 N/kg

How to calculate the acceleration from mass and force given?

If net force is applied on an object of mass "m" in linear direction, with magnitude F, then, acceleration of that object is:

[tex]a = \dfrac{\rm F}{\rm m} \: \rm[/tex]

(assuming one dimensional motion, force is also in that dimension).

Here, it is given that crate's mass m = 50kg

Force pulling the crate = 450 N (positive since it is in direction of motion (horizontal)

Force resisting the crate = -250 N (negative since it is opposite to the direction of motion).

Net force on crate = 450 N + (-250 N ) = 200N (positive, thus, in the direction of motion).

Acceleration of the crate = 200/50 = 4 N/kg

Thus,  the acceleration of the crate in considered situation is  4 N/kg

Learn more about acceleration here:

https://brainly.com/question/1046166

Algerbra, pls answer fasttttttt

Answers

Answer:

Step-by-step explanation:

i dont understand this

Answers

Answer:

18°

Step-by-step explanation:

1. ∠A and ∠B are complementary angles, so they add up to 90°.

This means that 2x - 4 + 5x + 17 = 90

2. To find the measure of ∠A, we first have to solve for x.

3. (Solving)

Step 1: Simplify both sides of the equation.

[tex](2x+5x)+(-4+17)=90[/tex] [tex]7x+13 = 90[/tex]

Step 2: Subtract 13 from both sides.

[tex]7x + 13 - 13 = 90 - 13[/tex] [tex]7x = 77[/tex]

Step 3: Divide both sides by 7.

[tex]\frac{7x}{7} = \frac{77}{7}[/tex] [tex]x = 11[/tex]

4. Now that we know x = 11, let's plug that value into (2x - 4) to find the measure of Angle A.

[tex]2(11)-4[/tex] [tex]22-4[/tex] [tex]18[/tex]

Therefore, the measure of ∠A = 18°.

Answer:

m<A = 18

Step-by-step explanation:

Since <A and <B are complementary angles, that just means those 2 angles combined equal 90:

<A + <B = 90

2x - 4 + 5x + 17 = 90

7x + 13 = 90

7x = 90 - 13

7x = 77

x = 77/7

x = 11

m<A:

2x - 4

2(11) - 4

22 - 4

18

Multiple Choice Find the mean: 12, 8, 7, 10, 8, 8, 10

Answers

Answer:

The mean is 9

Step-by-step explanation:

To find the mean, all you do is add up all the numbers and then divide by how many numbers there are. In this case, adding all then numbers up gives you 63, and there are a total of 7 numbers. 63 divided by 7 =9

PLEASE PLEASE PLEASEEEEEEE HELP RNNN xddddddd

Answers

Lets find the slope of the graph for Jennifer's record.  THe slope represents her rate.

Slope = (y2 - y1) / (x2 - x1)

 Lets use the first two points.

 Slope = (8 - 5) / 64 - 40)

         = 3 / 24

         = 1 / 8

Use the second and third points.

 Slope = (10 - 8) / (80 - 64)

        = 2 / 16

        = 1 / 8

Last points.

 Slope = (12 - 10) / (96 - 80)

        = 2 / 16

        = 1 / 8

 The slopes are constant.  

 Now we compare the slopes.  Use the LCD to compare fractions.  

1 / 9 = 8 / 72

 1 / 8 = 9 / 72

 9 / 72 > 8 / 72

 Jennifer has the faster training rate.  She can cover more distance in less time than Patrick can.

How do you turn a whole number into a fraction

Answers

Answer: To convert a fraction into a whole number: Divide the numerator by the denominator, only if the numerator is a multiple of the denominator. Let us see an example of this conversion.

this is for algrebra so it might not be what you are looking for

Which climate zone generally receives the least amount of the
sun's energy?
a) tropical zone
b) subtropical zone
c) temperate zone
d) subpolar zone

Answers

Answer:

d) subpolar zone

2 shops sell luxury chocolates.
Shop A : 200 g for £2.90
Shop B: 150 g for £2.15
Which shop offers the best value for money?

Answers

Answer:

shop b

Step-by-step explanation:

please help i need help

Answers

Answer:

fractions

d

its right answer

Answer:

The answer to your question is D Fractions

Step-by-step explanation:

Fractions and decimals are two different ways to represent parts of a whole number.

I hope this helps!

geometry hw!!! picture is above

Answers

X=12 because 73-3x=61-2x so add 3x to both to make 73=61+X then subtract 61 from both to get 12=X

After 3.5 days, the height of the plant is ______
centimeters.

The height of the plant is 6.25 centimeters after _______
days.

Answers

Answer: I think this is what the top answer meant. Let me know if I am wrong though!

After 3.5 days, the plant is 5.75 centimeters tall, and after 4.5 days, it is 6.25 centimeters tall.

Given that a function h = 0.5d + 4 showing the height h of a plant in d days,

So, the equation of the line is:

h = 0.5d + 4

For 3.5 days put d = 3.5,

h = 0.5(3.5) + 4

h = 5.75 cm

To find the number of days after height of the plant is 6.25 centimeters.

Put h = 6.25,

6.25 = 0.5d + 4

2.25 = 0.5d

d = 4.5 days

Hence, the plant is 5.75 centimeters tall after 3.5 days and 6.25 centimeters tall after 4.5 days.

Learn more about functions here:

https://brainly.com/question/31062578

#SPJ4

Complete question is attached.

De'shawn pays $8.16 for 12 pounds of sugar what is the price per pound of sugar asp

Answers

Hello, to do this, simply do 8.16 divided by 12 to get 0.68 cents per pound. 0.68 is your price per pound.

Help please help me

Answers

Answer:Hi

Step-by-step explanation:  

Make a 4-by-4 logic grid on your own paper. Use it to help solve the logic
puzzle and answer the question.
A barbershop, a coffee shop, a flower shop, and a nail salon each have a sign
of a different color: blue, green, red, or purple (but not necessarily in that
order)
The coffee shop and the barbershop are next to the shop with the green sign.
The nail salon is not next to any of the other shops.
The barbershop's sign is either blue or red.

The store with the purple sign is next to the store with the green sign.
Which shop has the purple sign?
A. The coffee shop
B. The flower shop
C. The nail salon
D. The barbershop

Answers

Answer:

A

Step-by-step explanation:

I will give you brainliest if you solve the math question

Answers

The answer is 3.9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 rounded to 49999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999 9999999999999999999

HELP ASAP

Explains how to evaluate the expression 4x+10 for x=5.

Answers

Answer:

30

Step-by-step explanation:

4x + 10 = 4*5 + 10 = 20 + 10 = 30

Pls help with these questions!!!

Answers

Answer:

[tex]9 \times 9 - 3 = 81 - 3 = 78[/tex]

For how many values of x is the function _____ discontinuous?

Answers

Answer:

Step-by-step explanation:

2 values

x^2-1=0

x^2=1

x=±1

thes are the two values for which the function is discontinuous.

Can someone please tell me the answer

Answers

Answer:

36 since they are similer triangles

Longer process:

24/24 = 36/x

solve this and you get 36

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