Mathematics College

A system of equations is shown.

`4x + 3y = 8`
`4x` `–` `3y =` `-16`


Question:
What is the value of
x
?

Answers

Answer 1

Answer:

x = -1

y = 4

Step-by-step explanation:

Why are there so many ''' in your question? Do they have any signifigance?

Answer 2

The value of [tex]x[/tex] of the system of equations will be  [tex]-1[/tex].

What is system of equations?

System of equations is a finite set of equations for which common solutions are sought.

We have,

[tex]4x + 3y = 8[/tex]    

[tex]4x-3y = -16[/tex]

So,

Using the linear combination method,

i.e. adding the given equations,

[tex]4x + 3y = 8[/tex]    

[tex]4x-3y = -16[/tex]

We get,

[tex]8x=-8[/tex]

⇒

[tex]x=-1[/tex]

So, value of [tex]x[/tex] is [tex]-1[/tex] .

Hence, we can say that the value of [tex]x[/tex] of the system of equations will be  [tex]-1[/tex].

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Related Questions

The graph of a linear equation is shown. y ОN HNWO -7-6-5-4-3-2-11+1234 5 6 7 -27 -3 가 Place values in the table to show three ordered pairs that are each part of the solution set of the linear equation. 2 P. y – 4 2 -6 -3 - 6​

Answers

Answer:

n

Step-by-step explanation:

s

I need the answer fast psl

Answers

Answer:

I think Ordered Pair

Step-by-step explanation:

Once again, consider the data for Fred's caloric intake. 2000 2200 2100 2400 2500 1900 2200 2200 2700 2600 Find the : (enter your answers as numbers) Sample standard deviation (rounded to the nearest hundredth)

Answers

Answer:

The sample standard deviation is of 248.19.

Step-by-step explanation:

First we find the sample mean, which is needed to find the sample standard deviation.

Sample mean:

Sum of all values in the sample, divided by the number of values. So

[tex]M = \frac{2000+2200+2100+2400+2500+1900+2200+2200+2700+2600}{10} = 2280[/tex]

Sample standard deviation:

Square root of the sum of the difference squared between each value and the mean, divided by the number of values. So:

[tex]S = \sqrt{\frac{(2000-2280)^2+(2200-2280)^2+(2100-2280)^2+(2400-2280)^2+(2500-2280)^2+(1900-2280)^2+...}{10}} = 248.19[/tex]

The sample standard deviation is of 248.19.

If right I’ll mark brainiest if u have questions put it in the comments

Answers

Answer:

6

Step-by-step explanation:

The interquartile range is calculated by subtracting the first quartile from the third quartile. Box and whisker plots make it pretty easy to find the quartiles. The first quartile is the point where the box starts, and the third is where the box ends. The second is the median/line in the middle of the box.

So for that first box plot on the top, the first quartile is 7, because that's where the box begins. The third quartile is 22 because it's where the box ends.

For the second one, the first quartile is 8 and the third is 17.

To find the interquartile range of each, subtract the first quartile from the third. 22-7 = 15 and 17-8 = 9.

Now to find the difference in the interquartile ranges, subtract 9 from 15. You get 6, so that is the answer :)

ls Figure A'B'C'D' a translation of Figure ABCD? (Click in the picture to see the rest

Answers

Answer:D

Step-by-step explanation: It is none of them because it is translated up one unit and then reflected across the y axis.

solve for x. label the sides adj, opp, and/or hyp based on the part you see. show work round to the nearest 10th

Answers

Answer:

[tex]x=37.4[/tex]

Step-by-step explanation:

In an right triangle, the cosine of an angle is equal to its adjacent side divided by the hypotenuse (a/h).

Therefore, we have the following equation:

[tex]\cos 68^{\circ}=\frac{14}{x},\\x=\frac{14}{\cos 68^{\circ}}\approx\boxed{37.4}[/tex]

Please answer both!!

Answers

27. 9x^2-24x+16=0
(3x-4)^2=0
3x-4=0
3x=4
x=4/3


28. 9x^2-30x+26=1

9x^2-30x+26-1=0

9x^2-30x+25=0
(3x-5)^2=0
3x-5=0
3x=5
x=5/3

Plz help 27 pt this is getting graded plz plz Plz

Answers

Answer:

517.2

Step-by-step explanation:

It has sides you're not seeing so don't forget those.

You need to find the area of the front, back, two sides, and bottom

Front & back:

6*5.2* 1/2

31.2/2 = 15.6 for each

Sides:

27*6 = 162 each

Bottom:

6*27 = 162

162+162+162+15.6+15.6= final answer

Answer: B

Step-by-step explanation:

First, you do 5.2 times 6 divided by two which is 15.6. Now you do 15.6 times two since there are two triangles and get 31.2. Now you do 27 times 6 times two and get 324 + 31.2 = 355.2. Lastly, you do 27 times 6 to get 162. 162+355.2 = 517.2

- Solve the equation 3 + n = 12​

Answers

Answer:

n = 9

Step-by-step explanation:

Method 1(Algebra) :

3 + n = 12

3 - 3 + n = 12 - 3

n = 9

Method 2:

3 + n = 12

Move 3 to the other side of the equation.

n = 12 - 3

n = 9

PLZ HELP I WILL MARK BRAINIEST (26+4) divided by 6 = w

Answers

Answer:

w = 5

Step-by-step explanation:

(26+4)=30, and 30/6=5, therefore, w = 5.

so (26+4) = 30

and 30/6=5

so the answer is w=5

What is the degree?

6−n

2

+5n

3

Answers

Polynomial Degree:
3
3
Leading Term:
5
n
3
5
n
3
Leading Coefficient:
5

A recent survey showed that 23.3 million adults have cut the cord on cable TV services, a 30% increase fron the previous year. If this trend continues, how many millions if adults can be expected to cut the cord next year?​

Answers

Answer:

30,290,000 people

Step-by-step explanation:

The question is asking if the trend continues from the PREVIOUS year, so we would find the 30% of 23,300,000

23,300,000/100 = 233,000 = 1%

233,000 x 30 = 6,990,000

23,300,000 = 6,990,000 = 30,290,000

Please help me!
Will give brainlst :)

Answers

To figure this out we need to plug in the numbers. If the end numbers on both sides equal each other it is the solution.

x = 8 & y = 5

5(8) - 4(5) = 20
40 - 20 = 20
20 = 20

3(5) = 2(8) + 1
15 = 16 + 1
15 = 17

As you can tell the first equation makes sense so that is the solution.

A boat's value over time is given as the function f(x) and graphed below. Use A(x) = 400(b)x + 0 as the parent function. Which graph shows the boat's value decreasing at a rate of 40% per year?

Answers

Answer: I can't really tell you the answer because you didn't show the graphs...

Step-by-step explanation:

A boat's value over time is given as the exponential function f(x) = 400(0.6)ˣ

What is an exponential function?

An exponential function is in the form:

y = abˣ

Where a is the initial value and b is the multiplication factor.

Given that the boat's value decreasing at a rate of 40% per year, hence:

b = 100% - 40% = 60% = 0.6

A boat's value over time is given as the exponential function f(x) = 400(0.6)ˣ

Find out  more on exponential function at: https://brainly.com/question/12940982

what is the slope of this graph

Answers

Answer:

1

Step-by-step explanation:

Trust

what is 3 x 3 x 9 x 9 x 81 x 81 x 6561 x 6561

Answers

Answer:

205891132094649

out of 20 consecuative whole number two are chsen at random.then the probability that ther?​

Answers

Answer:

2/20

Step-by-step explanation:

since,there are 20 whole number and if u put 2 random number the,

probability(P)=favorable outcome/possible outcome

so p=2/20

Thank You

Can someone help me or explain how to find the missing value from the simple interest?

Answers

This is the working and answers

There were 35 children and 10 adults at a cookout. What is the ratio of adults to children at the cookout?

Answers

Answer:

2:7

Step-by-step explanation:

10:35 can also be written as 2:7

Thenks and mark me brainliest :))

I need an answer quick!!!

Answers

Answer:

0.34

Step-by-step explanation:

it is between 0.3 and 0.4 so obviously 0.3 is going to be there, but the next digit will be 4 because it moves 4 places to the right.

Answer:

The answer is .34

When you see a question like this you just go down to the next decimal place. In this example you count: .31, .32, .33, .34... and so on.

HELP!! 10 MIN REMAINING.
How can scientists use a seismograph to determine the density and depth of earths layers.

Answers

Answer:

Scientists can tell by observing the seismic waves that are recorded all over the surface of the earth from distant earthquakes. The seismic waves are reflected (bounced off) layers of different density, and they are refracted (bent) when they enter layers of different density.

Answer:

here now you can give her brainliest

Step-by-step explanation:

What would this One be??

Answers

Answer:

the pre-image and the image are congruent

Step-by-step explanation:

Answer:

i think its c

Step-by-step explanation:

10+4y=20
Help me and out the steps in please

Answers

Answer: 10+4y=20

4y= 10

y= 10/4

y= 5/2

Step-by-step explanation: above

Directions: Solve for the surface area of the following figures using the formula.

no links pls. i really need it T-T​

Answers

Answer:

3^3 x 3.14

9 x 3.14 = 28.26

28.26  x 2 = 56.52

2 x 3.14 x 3 = 18.84

18.84 x 10 = 188.4

Now lets add all given areas:

56.52 + 188.4 = 244.92 m^2 for question 1

4 x 3.14 x 12^2

4 x 3.14 x 144 = 1,808.64 cm^2 is your answer for question 2

14^2 x 3.14

196 x 3.14 = 615.44

3.14 x 14 x 33 = 1450.68

1450.68 + 615.44 = 2,066.12 cm^2 is your answer for question 3 I think

If a car moves 12 km North,19 km east, and 12 km south, what is its displacement

Answers

Answer:

19 km east

Step-by-step explanation:

By going North 12 then south 12 the two cancel eachother out leaving only the eastern movement

Answer:

19 km, East

Step-by-step explanation:

I hope you get it right

Wavelength and Frequency

A chord consists of notes that sound good together. the C major chord, starting at middle C, has the following frequencies:

C - 262 Hz
E - 330 Hz
G - 392 Hz

Determine the ratio of the frequency of G to C. Express the answer in a simple integer ratio. (Due to rounding the ratio will be approximate. )

a. 5 to 4
b. 3 to 2
c. 6 to 5
d. 9 to 8

Please select the best answer from choices provided

Answers

Answer:

B. 3 to 2

Step-by-step explanation:

I calculated it logically

The ratio of the frequency of G to C is 1.5. So, option b is correct.

What is meant by frequency ?

Frequency of a wave is defined as the number of oscillations completed by the wave in one second.

Here,

The frequency of note G, f(G) = 392 Hz

The frequency of note C, f(C) = 262 Hz

The ratio of the frequency of G to C, r = frequency of G/frequency of C

r = f(G)/f(C)

r = 392/262

r = 1.496 approximately r = 1.5

Hence,

The ratio of the frequency of G to C is 1.5

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Suppose you have two rectangular prism with dimensions 2 feet by 3 feet by 5 feet. You want to join prisms together to form a larger rectangular prism. Which faces should you join if you want to make a prism with the least possible surface area?

Answers

Answer:

Below in bold.

Step-by-step explanation:

You would join the faces with the greatest area

That is the faces with dimensions 3 feet by 5 feet.

What is the simple interest on 500 for 5 years at the rate of 5% per annum

Answers

Answer:

125

Step-by-step explanation:

Formula Simple interest:

P x r x t

I = principal x rate x time
I = 500 x .05 x 5
I = 125

( time is always expressed in years and you convert rate to a decimal )

_ +18=5+41

What is the equation to finding the missing number

Answers

Answer:

28

Step-by-step explanation:

5+41= 46, so now subtract 46 to 18 and you get 28

To check 18+28=46 and  5+41=46

Answer:

Equação básica de segundo grau

line f has a slope of -3. what is the slope of the line that is parallel to line f

Answers

Answer:

A line parallel has the same slope, so -3

The slope of the line that is parallel to line f is -3.

The given line f has a slope of -3.

We need to find the slope of the line that is parallel to line f.

What are parallel lines slope?

The slope of parallel lines. The slope of parallel lines is equal. The parallel lines are equally inclined with the positive x-axis and hence the slope of parallel lines is equal. If the slopes of two parallel lines are represented as [tex]m_{1}[/tex], [tex]m_{2}[/tex] then we have [tex]m_{1}=m_{2}[/tex].

So, the slope of the parallel line=-3

Therefore, the slope of the line that is parallel to line f is -3.

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