Mathematics College

4x + 4y = 40
2x - 4y = 8

Answers

Answer 1

Answer:

x=8 y=2

Step-by-step explanation:

solve for x

1. 4x+4y=40

2. subtract 4y from both sides

3. 4x=40-4y

4. divide both sides by 40

5. [tex]\frac{4x}{4} = \frac{40-4y}{4}[/tex]

6. dividing by four undoes the multiplication by four

7. [tex]x=\frac{40-4y}{4}[/tex]

8. divide 40 - 4y by 4

9. x=10-y

10. use the last equation to solve the rest

Related Questions

differentiate between Charles babbage's and Alan turing's computer designs

Answers

The Analytical Engine was a proposed mechanical general-purpose computer designed by English mathematician and computer pioneer Babbage,[2][3] with the assistance of Ada Lovelace. It was first described in 1837 as the successor to Babbage's difference engine, which was a design for a simpler mechanical computer.

What is the simplified answer?

Answers

Answer:1 and 1/2

Step-by-step explanation:

what does 1/2 x 2/3 equal

Answers

Answer:

9/2

Step-by-step explanation:

Hello i have no question im just giving brainliest to whoever answers first

Answers

Answer:

thanks very much I really appreciate your kindness

Aaron is twice as old as Ryan.In 3 years,the sum of their ages will be 30 years.Find Aaron′s present age

Answers

Answer:

If we take Ryan's age as 'x' then we have Aaron's age as '2x'

Now, we have the sum of their ages after 3 years as 30.

So according to question, we can prepare an equation which is

2x+3+x+3 = 30

= 3x+6 = 30

= 3x = 30-6

= 3x = 24

= x = 24÷3

= x = 8

Thus, Ryan' is 8 years old now.

Now we need to find Aaron's age, and this can be done easily as we have already made an expression fore Aarons age, i.e., '2x'

So 2x= 2×8

= 16.

So we have Aaron's age-16,

Ryan's age-8

Ok so first, let’s see it this way

Aaron: x *2
Ryan: x

So basically 3 in total. Since 30 is already divisible by three we can go from there. Then we will get original age.

30/3 = 10

Aaron = 10 *2
Ryan = 10

This is their ages AFTER the three years. So now, we just subtract to find original age.

20-3= 17
20-3 = 7

Aaron is 17.
Ryan is 7.

Determine whether the graph represents a function . If it does represent a function , give its domain and range.
#18,20,24,30
PlEASE GUYS HELP ME OUT!!!!

Answers

Answer:

A function is a relationship that maps elements from a set (the domain) into elements from another set (the range)

Such that each element in the domain can be mapped into only one element from the range.

Let's see graphs 18, 20,24 and 30.

Remember that the axis that represents the domain is the horizontal one (usually represented with x), and the vertical axis represents the range (usually represented with y)

18) Here we can see that the point x = 1 his mapped into two different values of y.

we have the pair (1, 2) and the pair (1, -3)

And something similar happens for x = 2.

Then we can conclude that this is not a function.

20) Here we have a linear relationship.

Linear relationships are almost always functions, the only case when these are not functions is when the linear equation is something like x = a.

Linear equations can be written as:

y = a*x + b

So x can be any value, and thus y also can be any value.

Then the domain is the set of all real numbers, and the range is the set of all real numbers.

24) Here we have a quadratic function whose arms go down.

This is a function, now let's see the domain and range.

Quadratic functions are written as:

y = a*x^2 + b*x + c

There is no value of x can cause some problem in this equation, then this function works for all values of x, then the domain is the set of all real numbers.

Now, let's look at the graph.

We can see that the function goes up, reaches a maximum, and then goes down again.

Then the range will be the set of all the values smaller than the maximum we can see in the graph, this is:

y ∈ (-∞, 15]

or simply:

y ≤ 15.

30) Here again, we can see that for x = 0 there are two different values of y.

the same happens for x = -1, x = -2, and a lot of other values.

Then this is not a function, because it is mapping values of the domain into different values of the range.

Answer: 70%

We know that 70% of 100 is 70 but since we are working with 10 we can use a proportion.

However, just by looking at the numbers we can conclude it is 70% because if you take a zero off of 100 and 70 it is still proportionally equal to 100 and 70. Therefore, the answer is 70%.

Find the value of x.
5xº
55°
O A. 7
B. 25
C. 18
O D. 11

Answers

Answer:

the answer for this would be D. 11

Rob hits ball 3 feet off the ground at an angle of 30 degrees with an initial velocity of 115ft/sec. Will the ball clear a 20 foot fence that is 300 feet from the home plate?

Answers

Solve 1\ 7 + 1 \2= Show all your steps and don't get the answers from goo.gle.

and if it is not about the question four the answer I will report and no branlest

Answers

Answer:

[tex]\frac{9}{14}[/tex] = 0.642857143

Step-by-step explanation:

[tex]\frac{1}{7}+\frac{1}{2}[/tex]

Least common multiple of 7 and 2 is 14. Convert [tex]\frac{1}{7} and \frac{1}{2}[/tex] to fractions with denominator 14.

[tex]\frac{2}{14} + \frac{7}{14}[/tex]

Since [tex]\frac{2}{14} + \frac{7}{14}[/tex] have the same denominator, add them by adding their numerators.

[tex]\frac{2+7}{14}[/tex]

Add 2 and 7 to get 9.

[tex]\frac{9}{14}[/tex]

how to rewrite 6(38) using the distributive property?

Answers

6 x 38 = 6 x ( 19 x 2)
= (6 x 19) + (6 x 2)
= 114 + 12
= 226

Find the sine and cosine of the given angle
120°

Answers

Answer:

By using the value of cosine function relations, we can easily find the value of sin 120 degrees. Using the trigonometry formula, sin (90 + a) = cos a, we can find the sin 120 value. We know that the value of cos 30 degrees is √3/2. Therefore, sin 120° = √3/2

Step-by-step explanation:

please mark brainlist

Which equation represents a linear equation

Answers

Answer:

I'm thinking it's A or C

Step-by-step explanation:

I'm sorry I can't decide ;-;

Answer:

The 4th answer.

Step-by-step explanation:

It has the equivalence that each point will be substracted 5 from y and 20 from x, but it won't change the line of the result. Sure, the position, but not the line.

What’s the slope of y = -3x + 5? *

Answers

Answer:

-3

Step-by-step explanation:

The number connected to the x is the slope, the number being added on or subtracted is the y-intercept

Answer:

m=-5

Step-by-step explanation:

she has 3 pairs of shirts and 3 pair of pants and 1 cap how many outfits can she make.

Answers

i drew a picture and got 9 outfits because each shirt can be used with every single color pant and theres 1 cap that can go with each of these outfits

Answer:

she can make 3 outfits and only one of them have a cap

Step-by-step explanation:

y = 5x – 2
2x + 9y = 10

Answers

The answer is
x= y+2/5
x= 1/2

Answer:

y= ax+mb

Step-by-step explanation:

Which shape is a trapezoid with only 1 pair of parallel side

Answers

Answer: top green one

Step-by-step explanation:

Quadrilateral

Option (b) is the correct, which shows trapezoid with one pair of parallel lines.

What is trapezoid ?

A trapezoid, also known as a trapezium, is a closed shape having four sides, in which one pair of lines is parallel.

To show trapezoid with only 1 pair of sides,

Solve with the help of options,

(a) In the given shape, both the pair of sides are parallel.

(b) In the given shape, one side is parallel, and defines the shape of trapezoid.

(d) In the given shape, both the pair of sides are parallel.

Option (b) is the only option that satisfies the given condition.

To know more about Trapezoid on:

https://brainly.com/question/16642484

Measures of the diagonals of a rectangle are equal.

Therefore,

MP = LN

2x - 9 = x

2x - x = 9

x = 9

LN=x = 9 units

MP=2x-9 = 2*9 - 9 = 18 - 9 = 9 units

Other Questions

Which of the following statements best describes Wollstonecraft's view concerning women of her time period and power? Since they often control the money and run the household, women possess important forms of power in the realm of marriage. O As society is currently constructed, women are only allowed to hold fake forms of power (e.g., mothers over their children). O All women (especially the wealthy) will happily seek social change and equality. Since men and women are created differently, their capacity to wield power responsibly is different. what are the principal methods used to produce metallic powders according to the text, all of the following are forms of microform except: NEED IMMEDIATE HELP PLEASERamses cogitated. He thought of three consecutive even integers and found that 3 times the sum of the first two was 58 less than 14 times the opposite of the third. What were his integers? In March 2019, Mike Trout signed a 12-year, $430 million contract to play baseball. Which of the following are reasons that top baseball players like Trout are paid so highly? (choose all that apply)1. There are few individuals who are talented enough to become a top baseball player.2. There is high demand for top baseball players. the regional sales department for xerox copiers may be classified as a(n) question content area bottom part 1 a. revenue center. b. cost center. c. profit center. d. investment center. There may be more than one correct answer(s). Choose all that applies. Consider passing an array to a function, which of the array's properties must be specified in the function call?Group of answer choices:a. Array's Data Type.b. Array's size within the [ ] brackets.c. Array's Pointer.d. Array size through another variable.e. Array name. to what extent, if any, do you think capitalism is to blame for the problems in work and the economy discussed in this chapter? explain your answer. Develop a markov chain to describe the behavior of a food store customer (10 points). For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). Consider two mutually exclusive investment projects, each with MARR = 12%. The projects' cash flows are as shown in the table below:NAB1-$17,500-$15,9001$13,610$13,2102$14,930$13,7203$14,300$13,500On the basis of the NPW criterion, which alternative would be selected? The maximal length of a cycle of output bits from an LFSR of degree 7 isa) 63b) 14c) 127d) 128 what federated identity management (fim) relies on token credentials? early hominin meat-eaters might have obtained their meat by __________. Identify and explain the domestic and international considerations for todays business environment: social, economic, legal, ethical, technological, competitive, and international? A spinner is divided into five colored sections that are not of equal size: red, blue,green, yellow, and purple. The spinner is spun several times, and the results arerecorded below:Spinner ResultsColor FrequencyRed 9Blue 8Green 6Yellow 11Purple 2Based on these results, express the probability that the next spin will land on green oryellow or purple as a fraction in simplest form. A random variable follows the continuous uniform distribution between 20 and 50. a) Calculate the following probabilities for the distribution: 1) P(x leq 25) 2) P(x leq 30) 3) P(x 4 leq 5) 4) P(x = 28) b) What are the mean and standard deviation of this distribution? The Monroe Company purchased equipment costing $1200. Monroe paid $700 in cash and agreed to pay the remaining amount in thirty days. As a result of this initial transaction:-Total retained earnings decreased by $500-Liabilities increased by $500-Total assets increased by $500-Both B and CAll the above the rapid rise in antibody titer following a repeat exposure to an antigen that has been recognized from a previous exposure is called a(n) Nicole has decided that she is going to start her business, Nicole's Getaway Spa (NGS). A lot has to be done when starting a new business. Here are some transactions that have occurred prior to April 30. a. Received $92,000 cash when issuing 9,200 new common shares. b. Purchased some land by paying $5,500 cash and signing a note payable for $9,500 due in three years. c. Hired a new aesthetician for a salary of $2,200 a month, starting next month. d. NGS purchased a company car for $30,000 cash (list price of $33,000) to assist in running errands for the business. e. Bought and received $1,050 in supplies for the spa on credit. f. Paid $260 of the amount owed in (e). g. Nicole sold 100 of her own personal shares to Raea Gooding for $700. 1. prepare a journal entry 2. Assuming that the beginning balances in each of the accounts are zero, complete T-accounts to summarize the transactions (a)(g). 3. Prepare a classified balance sheet at April 30 using the information given in the transactions. Include Retained Earnings with a zero balance. 4. Calculate the current ratio at April 30. The concentration of a certain drug in the bloodstream t minutes after swallowing a pill containing the drug can be approximated using the equation C(t) = 1/6(4t +1)^-1/2, where C(t) is the concentration in arbitrary units and t is in minutes. Find the rate of change of concentration with respect to time at t = 12 minutes. -1/1029 units/m in -1/21 units/m in -1/42 units/min -1/4116 units/min

4x + 4y = 40 2x - 4y = 8

Answers

Related Questions

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

4x + 4y = 40
2x - 4y = 8