4x+y=15
3x+5y=41
help please!

Answers

Answer 1

Step-by-step explanation:

x=2. y=7

4(2) + (7) =15

3(2) + 5(7) = 41

Answer 2

Step-by-step explanation:

4x+y=15 -------1

3x+5y=41------2

y=15–4x--------3

3 in 2

3x+5(15–4x)=41

3x+75–20x=41

3x–20x=41–75

-17x=-34

x=-34÷-17

x=2

x=2 in 1

4(2)+y=15

8+y=15

y=15–8

y=7

answer:x=2,y=7


Related Questions

Is the following number rational or irrational?
0.7
Choose 1 answer:
A
Rational
B
Irrational

Answers

Answer:

it is rational cause it can be turned into a fraction 0.7= 7/10

5.1 Percentage changes
1. In February 2019, 195,676 mortgages were outstanding in the UK, which represented 0.38%
of all mortgages. How many total mortgages were in the UK market at that time?​

Answers

Answer:

Rounded to the nearest integer, at that time there were about 51,493,684 mortgages in the UK market.

Step-by-step explanation:

Given that in February 2019, 195,676 mortgages were outstanding in the UK, which represented 0.38% of all mortgages, to determine how many total mortgages were in the UK market at that time the following calculation must be performed:

0.38 = 195.676

100 = X

(100 x 195,676) / 0.38 = X

19,567,600 / 0.38 = X

51,493,684.21 = X

Thus, rounded to the nearest integer, at that time there were about 51,493,684 mortgages in the UK market.

Use synthetic substitution to find |(3) for f(x) = x2 - 9x +5.
Oa. 41
Ob.-23
Oc. -13
Od. -16

Answers

Answer:

-13

Step-by-step explanation:

(8p-2)(6p+2)

multiplying polynomials please help me​

Answers

Answer:

48p2+4p-4

Step-by-step explanation:

Answer:

48p² +4p -4

Step-by-step explanation:

A polynomial of two terms is called a 'binomial'.

Here, we are multiplying 2 binomials.

This is so common, there is a standard way to do it. The method is called FOIL, which means "firsts, outsides, insides, then lasts"

You do it like this:

multiply the 'first terms' of each binomial                           -->  8p*6p = 48p²

multiply the 'outside' terms, far left and far right                 -->  8p*2 = 16p

multiply the 'inside' terms, the two terms in the 'middle'    -->  -2*6p = -12p

multiply the 'last' terms of each binomial                              -->  -2 * 2 = -4

Add 'like' terms: 48p² + (16p - 12p) -4

Answer --->  48p² +4p -4

виконати питання,..
.
..​

Answers

Answer:

what kanguage s this?!!

Step-by-step explanation:

An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 290 engines and the mean pressure was 4.1 pounds/square inch (psi). Assume the population standard deviation is 0.6. The engineer designed the valve such that it would produce a mean pressure of 4.2 psi. It is believed that the valve does not perform to the specifications. A level of significance of 0.02 will be used. Find the P-value of the test statistic. Round your answer to four decimal places.

Answers

Answer:

P-value = 0.0046  

Step-by-step explanation:

Given that:

Sample size n = 290

sample mean [tex]\overline{x_1}[/tex] = 4.1

standard deviation [tex]\sigma[/tex] = 0.6

population mean [tex]\mu[/tex] = 4.2

The null and the alternative hypothesis

[tex]\mathbf{H_o: \mu = 4.2} \\ \\ \mathbf{H_a: \mu \ne 4.2}[/tex]

This is a two-tailed test.

The test statistics can be computed as:

[tex]Z = \dfrac{\overline x - \mu }{\dfrac{\sigma}{\sqrt{n}}}[/tex]

[tex]Z = \dfrac{4.1 - 4.2 }{\dfrac{0.6}{\sqrt{290}}}[/tex]

[tex]Z = \dfrac{-0.1 }{\dfrac{0.6}{\sqrt{290}}}[/tex]

Z = -2.838

P-value = P(Z> 2.838)

P-value = P(Z< -2.838) +P(Z > 2.838)

P-value = 0.00227 + (1 - 0.9977)

P-value = 0.00457

P-value = 0.0046      (to 4 decimal places)

Please Answer I Would Really Appreciate It :)

Answers

Picture doesn’t show up!!

Can someone please help me please

Answers

Answer:

it's answer is C. 12/10 = 4 / x

Step-by-step explanation:

As the triangles are similar so

4/12 = x/10

Or cross multiply then

12/10 = 4/x

Hope it will help :)

can’t find the answer anywhere, pls help

Answers

Answer:

Answer is

11

I'm just now learning

11 is the answer dear friend

how do I do the substitution method?

Answers

Step-by-step explanation:

1: Solve one Equation for one of the variables

2: Substitute (plug-in) this expression into the other equation and solve

3: Resubtitue the value into the original equation to find the corresponding variable

Answer:

1. Solve one equation for one of the variables.

2. Substitute (plug-in) this expression into the other equation and solve.

3. Resubstitute the value into the original equation to find the corresponding variable.

Now at first glance, this may seem complicated, but it'll get easier along the way. <3

Done by NeighborhoodDealer

I need this please help me

Answers

No, the two-way frequency table does not support the following statement because 13 middle school students wear glasses and 20 high school students wear contacts.

A car travels about 46 feet in one second. At this speed,
about how many feet will the car travel in 2 seconds?
A
920 feet
B
48 feet
480 feet
D
92 feet

Answers

I think it is D, 92 seconds. I doubled 46 so I hope I helped :))

How does the distance of the mouse change every 2 seconds? 0) Every 2 seconds, the distance the mouse travels i___ by __ feet.

Time|. 0|2|4|6
Distance|0|22|44|66

There's the graph please help​

Answers

Answer:

22 feet (if the distance is in feet, and the time in seconds)

Step-by-step explanation:

t = time

d = distance

To see if the mouse's distance is proportional to the time, you divide the distance with the time:

[tex]t_{3}[/tex] = 4

[tex]d_{3}[/tex] = 44

44 / 4 = 11

[tex]t_{4}[/tex] = 6

[tex]d_{4}[/tex] = 66

66 / 6 = 11 (the same as with 44 / 4. This means that the mouse distance and time is proportional)

Every second the mouse travels 11 feet.

And every other second the mouse travels 22 feet. (since (1, 11)*2 = (2, 22))

That may have been confusing, and if you have any questions, don't be afraid to ask them in the comments below!

Have a good day!

Answer:

increases by 22

657.9 as a whole number​

Answers

Answer: I would believe all you have to do is round up making the number 658 lad :)

Step-by-step explanation:

Have a good day :)

Stay safe and stay awesome :D

How do you graph X>=4y?

Answers

Answer:

[tex]x\geq 4y\\y\leq \frac{x}{4}[/tex]

Different shapes are drawn on cards and then the cards are placed in a bag. The number of cards for each shape is shown in the table.
Shape octagon square circle
Number of cards 12 27 91
What is the probability that a randomly selected card has a circle drawn on it?

Answers

Answer:

5 %

Step-by-step explanation:

Find the product
0.037 · 0.26

Answers

0.00962

Explanation: .037 • .26 = 0.00962
0.00962

0.037 • 0.26 = 0.00962

The sum of two numbers is 20.5 and the difference of the same two numbers is 6.5.
Find the two numbers. *​

Answers

Answer:

13.5 and 7

Step-by-step explanation:

x + y = 20.5

x - y = 6.5

Hence,

x = 20.5 - y

20.5 - 2y = 6.5

Hence,

2y = 14

y = 7

and x = 20.5 - y = 20.5 - 7 = 13.5

The two numbers are are 13.5 and 7.

What linear equations represents the numbers?

a + b = 20.5 equation 1

a  - b = 6.5 equation 2

Where a and b represents the two numbers

What is the value of b?

In order to determine the value of b, subtract equation 2 from 1

2b = 14

Divide both sides by 2

b = 7

What is the value of a?

Substitute for b in equation 1

a + 7 = 20.5

a = 20.5 - 7

a = 13.5

To learn more about simultaneous equations, please check: https://brainly.com/question/25875552

A grocery store sells a can of soup for $2.40 If they apply a 60% markup before selling it how much did the grocery store pay for the soup

Answers

Answer:

$0.96

Step-by-step explanation:

You will pay $0.96 for a item with original price of $2.40 when discounted 60%. In this example, if you buy an item at $2.40 with 60% discount, you will pay 2.40 - 1.44 = 0.96 dollars.

Hope this helps

which inequality has the same solution set as 3(q + 6) > 11?
3q + 18 < 11
3q + 6 > 11
q + 18 > 11
q + 18 > 11

Answers

Given:

The inequality is

[tex]3(q+6)>11[/tex]

To find:

The inequality that has the same solution set as the given inequality.

Solution:

We have,

[tex]3(q+6)>11[/tex]

Using distributive property, we get

[tex]3(q)+3(6)>11[/tex]

[tex]3q+18>11[/tex]

Since the given inequality can be rewritten as [tex]3q+18>11[/tex], therefore the inequality [tex]3q+18>11[/tex] has the same solution set as [tex]3(q+6)>11[/tex].

Hence, all options are incorrect. The required inequality is [tex]3q+18>11[/tex].

Answer:

3q+18 > 11

Step-by-step explanation:

6(y-12) someone please help

Answers

Answer:

-6y

Step-by-step explanation:

6 - 12 = -6

-6 * y = -6y

Hope this helps :)

Answer:

6y-72

Step-by-step explanation:

Help please if you know the answer

Answers

Answer:

180-140=a

180-90=b

180-a-b= your ans

The scatter plot shows Leanna's elevation above sea level during a hike. The trend line passes
through the points (30,1070) and (75,1680). If Leanna starts at 663 feet above sea level and
maintains the same rate, how far above sea level will she be after one hour?

Answers

Answer:

The​ y-intercept is 663 and the slope is 13.56.Thus, the equation for the trend line is y = 13.56x + 663

Step-by-step explanation:

After one​ hour, her altitude will be

1476.60 feet above sea level.                  that was only if u get a part b

QUESTION IS IN THE PICTURE, PLEASE HELP!!​

Answers

Answer:

The median is 5, mode is 5, and range is 12

Step-by-step explanation:

Answer:

MEDIAN - 5

MODE - 2 (4times)

RANGE - 13-1=12 (12 is the range)

Step-by-step explanation:

MEDIAN - Arrange the data in an ascending order and the median is the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.

MODE - The mode is the element that occurs most in the data set. In this case, 2 occurs 4 times.

RANGE - Subtract the minimum data value from the maximum data value to find the data range. In this case, the data range is 13-1=12

The price of gasoline rose from $1.54 to $3.85.
A: What is the percent increase?



B: If the price reverses from $3.85 to $1.54, what is the percent decrease?

Answers

Answer:

Step-by-step explanation:

dollar amount of increase = $3.85 - $1.54 = $2.31

percentage increase = (amount of increase)/(original price) = $2.31/$1.54 = 1.5 = 150%

1. 5/6 3/8, least common denominator) 2. 1/3 2/7 least common denominator)

Answers

Answer:

1.) The LCD is 24

2.) The LCD 21

Step-by-step explanation:

20/24 is equivalent to 5/6 and 9/24 is equivalent to 3/8

7/21 is equivalent to 1/3 and 6/21 is equivalent to 2/7

math problemmmmm
—————————-

Answers

Answer:

The answer to your question is x = 4

x=4

Step-by-step explanation:

To start figuring this out, you need to combine like terms.

To start, you can combine all terms containing the variable x, which is 2x and 3x. This would then make the equation 5x+7-2=25.

You then need to combing the singular numbers, 7 and -2. Doing this brings the equation to 5x+5=25.

From here, subtract 5 from both sides to get you 5x=20.

Finally, you divide both sides by 5 to get you x=4.

I hope this helped!! Let me know if you need any further help!

wo 6-sided number cubes are rolled for a board game. The 2 numbers are then added together to determine how many spaces the player advances on the board. Select the method of display that would be best for showing all of the outcomes for each number cube and the sums that would result. Create the display, and justify the reasoning behind your choice.

Answers

Answer:

The odds of rolling a 3 on a 6-sided number cube is 1 out of 6. The odds of rolling a 3 on either of two 6-sided cubes are 1/3. This is because 1/6 * 2 = 1/3. Therefore, an average of one-third of rolls will have a 3 in them. 1/3 expressed as a decimal is .3 repeating (.3333333 etc) and that rounds to 33 which is less than 34.

Step-by-step explanation:

mr stone paid $1750 for a new computer at the apple store, if the sales tax is 7.5% what is the final cost. I have 1881.25 must be rounded to the nearest 100th

Answers

Answer:

$1881.25

Step-by-step explanation:

Final cost of the computer

[tex] = 1750 + 7.5\% \: of \: 1750 \\ \\ = 1750 + 0.075 \times 1750 \\ \\ = 1750 + 131.25 \\ \\ = \$ 1,881.25[/tex]

if the body temperature in 98.6. what is the temperature in celcius

Answers

Answer:

37 Degree celcius; is the correct answer...

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