At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress. Silk is $16.90 per yard and cotton is $4 per yard.

Find the solution of the system of equations. Explain or show your reasoning
{x+y=4.25} ; {16.90x+4y=36.35}

Answers

Answer 1

Answer:

The number of yards of silk = x = 1.5 yards

The number of yards of cotton = y = 2.75yards

Step-by-step explanation:

At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress. Silk is $16.90 per yard and cotton is $4 per yard.

Find the solution of the system of equations. Explain or show your reasoning

{x+y=4.25} ; {16.90x+4y=36.35}

Let the number of yards of silk = x

The number of yards of cotton = y

We are given the system of equations:

{x+y=4.25} ......Equation 1

x = 4.25 - y

{16.90x+4y=36.35}....... Equation 2

4.25 - y for x in Equation 2

16.90(4.25 - y) + 4y = 36.35

71.825 - 16.90y + 4y = 36.35

71.825 - 36.35 = 16.90 - 4y

35.475 = 12.90y

y = 35.475/12.90

y = 2.75 yards.

The number of yards of cotton = y

{x+y=4.25} ......Equation 1

x = 4.25 - y

x = 4.25 - 2.75

x = 1.5 yards

The number of yards of silk = x = 1.5 yards

Answer 2

The yards of silk bought is  1.49 yards and the yard of cotton bought is 2.76 yards.

The two equations are known as simultaneous equation. They would be solved using elimination method.

x + y  = 4.25 equation 1

16.90x + 4y = 36.25 equation 2

where:

x = yards of silk bought

y = yards of cotton bought

In order to determine the value of x, multiply equation 1 by 4.

4x + 4y = 17 equation 3

Subtract equation 3 from 2

19.25 = 12.90x

Divide both sides of the equation by 12.90

x = 1.49 yards

In order to determine the value of y, substitute for x in equation 1

1.49 + y = 4.25

y = 4.25 - 1.49

y = 2.76 yards

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Related Questions

Use the distributive property to find an expression that is equivalent to
2x(x + 7)-(3x +1)

Answers

Given expression:

     2x(x + 7)-(3x +1);

To distribute implies to spread a process equally in an expression. Often times, the distributive property is used for expressions inside parentheses;

  2x(x + 7)-(3x +1)  

  Distribute 2x over the first parentheses;

   the negative sign distributes over the second part

    = (2x² + 14x)  - 3x -1

    = 2x² + 14x -3x -1

    Add like terms;

    = 2x² + 11x -1

This expression  2x² + 11x -1 is equal to the given one

Suppose that you borrow ​$11000 for 4 years at 6​% toward the purchase of a car. Find the monthly payments and the total interest for the loan.

Answers

Answer:

The monthly payments ≅ $258.335

The total interest of the loan ≅ $1400.095

Step-by-step explanation:

The rule of the monthly payments is

[tex]M.P=\frac{P(\frac{r}{n})}{1-(1+\frac{r}{n})^{-nt}}[/tex] , where

P is the initial amountr is the rate in decimaln is the period in a yeart is the number of years

∵ You borrow ​$11000

P = 11000

∵ It will be for 4 years

t = 4

∵ The rate is 6%

r = 6% = [tex]\frac{6}{100}[/tex] = 0.06

∵ It is a monthly payment

n = 12

→ Substitute these values in the rule above

∴ [tex]M.P=\frac{11000(\frac{0.06}{12})}{1-(1+\frac{0.06}{12})^{-12(4)}}[/tex]

→ Use your calculator to find the answer

∴ M.P = 258.3353195

The monthly payments ≅ $258.335

→ The total interest of the loan is the difference between the total

   of the monthly payments and the initial amount

The total interest of the loan = T.M.P - P

The total of the monthly payments = M.P × t × n

∴ The total of the monthly payments = 258.3353195 × 4 × 12

The total of the monthly payments = $12400.09534

∵ The initial amount P = $11000

∴ The total interest of the loan = 12400.09534 - 11000

∴ The total interest of the loan = 1400.095

The total interest of the loan ≅ $1400.095

the price of 41gram apple is 10.25 rupees.then how many rupees for 1 kg apple​

Answers

Answer:

Rs. 250

Step-by-step explanation:

The price of 41 g. apple is Rs 10.25

The price of 1 g. apple is Rs 10.25/41, = Rs 0.25

The price of 1 Kg (1000 g.) is 0.25 x 1000 = Rs 250

Solve -8 =2(z-18) for z

Answers

Answer:

z=14

Step-by-step explanation:

-8=2(z-18)

  -8=2z-36

+36     +36

28=2z

28/2=14

z=14

Answer:

z=14. 2(14-18)=2(-4)=-8=-8

P.s.

please give me brainliest for my next rank

HELP!!! DUE IN 38 MINUTES 11:22 due at 11:59pm pst​

Answers

Answer:

(1,2)

(-1,2)

(1,-2)

(-1,-2)

Which set of ordered pairs does not represent a function?

\{(5, -6), (-1, -2), (2, -9), (-8, -2)\}{(5,−6),(−1,−2),(2,−9),(−8,−2)}
\{(-5, 7), (-4, -9), (-5, -4), (2, -6)\}{(−5,7),(−4,−9),(−5,−4),(2,−6)}
\{(-4, 2), (-2, 8), (-1, 6), (5, 6)\}{(−4,2),(−2,8),(−1,6),(5,6)}
\{(2, 2), (-4, 9), (9, -3), (-3, 2)\}{(2,2),(−4,9),(9,−3),(−3,2)}

Answers

Answer:

the 1st, 2nd, and 4th one because those ordered pairs, the y axis is the same . sooo thats what makes it a non function .

A plane begins its takeoff at 2:00 P.M. on a 1700-mile flight. After 11.5 hours, the plane arrives at its destination. Explain why there are at least two times during the flight when the speed of the plane is 100 miles per hour.

Answers

Answer:

turbulance

Step-by-step explanation:

Simplify -9/6 divided by -3/2

Answers

-9/6 divided by -3/2 is equal to -9/6 times -2/3.
An negative times a negative is a positive
So the new prob is 9/6 times 2/3
you multiply across and you get 18/18
18/18 is equal to 1
there’s you answer hope it helps ✨

Cheryl has $100 on her subway gift card. Each week she buys the same lunch for $10. She wants to continue using the card until the balance remaining is $40. Write an equation to represent the situation

Answers

Answer:

100-60=40

Step-by-step explanation:

Answer:

In 6 weeks she will have $40.

Step-by-step explanation:

$100 - $10 - $10 -$10 - $10 - $10 - $10.

Or $100 - $60.

A high-performance composite flywheel rotor can spin anywhere between 30,000 and 100,000 revolutions per minute. What
is the range of degrees through which the composite flywheel can travel in a minute? Write your answer in scientific
notation.

Answers

Answer:

Step-by-step explanation:

1 revolution will equal 360 degrees

Because of that 30,000 revolution would be 10,800,000 degrees

100,000 rev would equal 36,000,000 degrees

The range through which the composite flywheel rotates in one minute be denoted by ' F ' . (1.08 x 107)° F (3.6 x 107)°

The range of degrees the composite flywheel can travel in a minute is 2.52 × 10⁷ degrees/minute.

What is the Scientific Notation?

Scientific Notation is a way of writing down in the easy form of very large or very small numbers.

The range of revolutions per minute for the rotor is from 30,000 to 100,000, which means that the rotor can spin a total of 70,000 revolutions per minute (100,000 - 30,000 = 70,000).

To find the range of degrees through which the composite flywheel can travel in a minute, we need to multiply the range of revolutions by the number of degrees in one revolution.

A full revolution is 360 degrees, so the composite flywheel can travel in a minute :

70,000 revolutions/minute × 360 degrees/revolution = 25,200,000 degrees/minute

This can be written as 2.52 × 10⁷ in scientific notation.

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Can someone help me out ? Please ?

Answers

Answer:B

Step-by-step explanation:mark me as brainliest


Which of the following is an obtuse triangle?
Triangle A
Triangle B
Triangle C
Triangle D

Answers

Answer:

triangle B

Step-by-step explanation:

It is the only triangle with an angle wider than 90

1. What is the surface area of the polyhedron? Explain your reasoning.

Answers

Answer:

24

Step-by-step explanation:

i counted the square me good at counting

24 I hope this helps

Can a decimal that has repeating digits after the decimal point be converted into a fraction?

Answers

Answer:

yes, because you need to convert the repeating number into a decimal. In this case, you can assume that x is the fraction form of 0.7 repeating.

Answer:

yes I think so ...................

Please help with this math problem!!!!! ASAP please thanks! The photo is attached

Answers

Answer:

The answer will be the 2nd answer!

Step-by-step explanation:

Your Welcome!!

2nd answer reflected over the y-axis

Which of the following best represents an elevation of 0 feet? A. a mountain top B. a beach C. a sea trench

Answers

Answer:

the answer is b) The beach

Answer:

b

Step-by-step explanation:

it's obious

Irina ran 0.25 mile in 2 minutes. At this rate, how many minutes will it take her to run 2 miles?

Enter the correct answer in the box.

Answers

Answer:

16

Step-by-step explanation:

 2/0.25 = 8

2 x 8 = 16

I think the answer is 16. Don’t get stressed!!
........

PLEASEE HELP ME AS FAST AS POSSIBLE! According to the fundamental theorem of algebra, how many solutions does this polynomial have?

Btw sorry about the bad lighting

Answers

2, because there are 2 different factors with x in it.

x could be 0, or 4.

Hope this helps

The number of the solution of the polynomial is 2. And the solutions of the polynomial are 0 and 4.

What is polynomial?

A polynomial expression is an algebraic expression with variables and coefficients. Unknown variables are what they're termed. We can use addition, subtraction, and other mathematical operations. However, a variable is not divisible.

The polynomial is given below.

y = 3x(x - 4)

The factors of the polynomial are 3x and (x - 4).

For the solution of the polynomial, put each factor equals to zero.

Then the solution of the polynomial will be

3x = 0

 x = 0

x - 4 = 0

     x = 4

The number of the solution of the polynomial is 2.

And the solutions of the polynomial are 0 and 4.

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On a number line, which fraction would be to the right of 1/2?

A) 2/12
B) 1/3
C) 10/20
D) 16/25

Answers

Answer:

C. I hope this helps! Have a great day.

Round 555 to nearest 10

Answers

Answer: 600

Step-by-step explanation: 555

The five in the tens place is equal to 5

To round to the nearest tens place the number has to be 5 or more than 5

I disagree with the first answer. I believe it would be 560 bc of the following rules Rounded to nearest ten

Here we will tell you what 555 is rounded to the nearest ten and also show you what rules we used to get to the answer.

Remember, we did not necessarily round up or down, but to the ten that is nearest to 555.

First, 555 rounded to the nearest ten is:

560




When rounding to the nearest ten, like we did with 555 above, we use the following rules:

A) We round the number up to the nearest ten if the last digit in the number is 5, 6, 7, 8, or 9.

B) We round the number down to the nearest ten if the last digit in the number is 1, 2, 3, or 4.

C) If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.

Solve: 5x - 14 = 8x + 4

Answers

x = -6
hope this helps!

What is the place value of 7 in 0.724 rounded.

Answers

The place value of 7 in 0.724 = 7 tenths or 7/10 or 0.7

The place value of 2 in 0.724 = 2 hundredths or 2/100 or 0.02

The place value of 4 in 0.724 = 4 thousandths or 4/1000 or 0.004

Therefore , the place value of 7 in 0.724 is 7 tenths or 7/10 or 0.7 ( as all are the same ) .

divide 8/10 ÷ 1 5/6 and put it in its simplest form ​

Answers

Answer

24/55 as a fraction

The solution of the given equation is 24/55

What is Division method?

Division method is used to distributing a group of things into equal parts.

Given that;

The equation is,

8/10  ÷ 1 5/6

Now,

Solve the expression as;

= 8/10 ÷ 1 5/6

= 8/10  ÷ 11/6

= 8/10 x 6/11

= 48/110

= 24/55

So, The solution of the given equation is 24/55.

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Can u help me asap please

Answers

Answer:

It is for sure a rational # , and whole #, but possibly also a natural#

Step-by-step explanation:

Solve the system of linear equations by graphing. x+y=27
y=x+3

Answers

Answer:

X=12 Y=15

Step-by-step explanation:

X+Y=27 (1)

Y=X+3 (2)

substitute (2) into (1)

X+X+3=27

2X=24

X=12

substitute X=12 into (2)

Y=12+3

Y=15

The solution to the problem as shown in the graph is at A(12, 15):

A linear equation is in the form:

y = mx + b;

where m is the slope, b is the y intercept and y, x are variables.

Given the linear equations:

x + y = 27

y = x + 3

Plotting the equations using Geogebra online graphing tool, the solution to the problem as shown in the graph is at A(12, 15):

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If we increase our food intake, we generally gain weight. Nutrition scientists can calculate the amount of weight gain that would be associated with a given increase in calories. In one study, 16 nonobese adults, aged 25 to 36 years, were fed 1000 calories per day in excess the calories needed to maintain a stable body weight. The subjects maintained this diet for 8 weeks, so they consumed a total of 56,000 extra calories. According to theory, 7700 extra calories will translate into a weight gain of 1 kilogram. Therefore, we expect each of these subjects to gain 56000/7700=7.3 kilograms. The weights in kilograms before and after the 8-week period are shown below:

ID: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Before: 55.7 54.9 59.6 62.3 74.2 75.6 70.7 53.3 73.3 63.4 68.1 73.7 91.7 55.9 61.7 57.8
After: 61.7 58.8 66.0 66.2 79.0 82.4 74.3 59.3 79.1 67.0 73.4 76.9 93.1 63.0 68.3 60.3



(1) For each subject, manually calculate the weight gain subtracting the weight before from the weight after.

Answers

1,346 calories hope this helps

Evaluate:

54 - 75 + 81 - (-27) + 53

Answers

54-75+81-(-27)+53
Turn the two negatives positive

54-74+81+27+53
Add 81 and 27
Add 108 and 53
Add 54 and 80
Subtract 75 from 134
= 59

helppp me please!!! ​

Answers

Answer:

18 hdhb

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

21/1 x 6/7

21 x 6 = 126

1 x 7 = 7

126 / 7 = 18

Which inequality is graphed below?​

Answers

X is less than or equal to -4

Answer:

the first one

x is greater than or equal to - 4

Step-by-step explanation:

$15 per hour is the basic rate at a factory. After a 48 hour basic work week, overtime is paid time and a half. If no one worked overtime and the factory paid $15840 in wages one week how many workers are in the factory

Answers

There are 22 workers are available in the factory.

What is Wages?

Wages is the payment for work based on hours worked (or sometimes per day or per amount of work done).

Here, Let the number of workers in the factory be x.

         Basic rate = $15

    Working hours in a week  = 48 hours

     Total wages in a week = $ 15840

If no overtime is to be paid then according to question,

   Amount paid to 1 worker = 48 X 15 = $ 720

  Amount paid to x worker = 720x

                 15840 = 720x

                    x = 15840/720

                    x = 22

Thus, There are 22 workers are available in the factory.

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