2x - y = 8
x + 3y = 4​

Answers

Answer 1

Answer:

x = 4, y = 0

Step-by-step explanation:

Two find x and y, we can simply solve one of the two equations for one of the variables, and substitute it into the other.  That will provide one of the two values, which can then be plugged into either equation for the other value.  Let's do it:

[tex]2x - y = 8\\y = 2x - 8\\\\x + 3y = 4\\x + 3(2x - 8) = 4\\x + 6x - 24 = 4\\7x = 28\\x = 4\\\\y = 2x - 8\\y = 2(4) - 8\\y = 0[/tex]

So x is equal to four, and y is equal to zero.


Related Questions

State all integer values of x in the interval (2,8) that satisfy the following inequality:
5x + 4 > 19

Answers

Answer:

3,4,5,6 and 7

Step-by-step explanation:

Given

[tex]5x + 4 \ge 19[/tex]

Required

State the values of x within 2 and 8

[tex]5x + 4 \ge 19[/tex]

Collect Like Terms

[tex]5x \ge 19 - 4[/tex]

[tex]5x \ge 15[/tex]

Divide both sides by 5

[tex]\frac{5x}{5} \ge \frac{15}{5}[/tex]

[tex]x \ge 3[/tex]

(2,8) is an open interval which means that 2 and 8 are not inclusive of the values of x.

So:

The values of [tex]x \ge 3[/tex] are: 3,4,5,6 and 7

True or False, repeated decimals are all Rational Numbers!
A. True
B. False

Answers

Answer:

The answer is A: True

Step-by-step explanation:

Repeating decimals are rational numbers because there is only one number that's repeating over and over again.

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

who can ancer this for me?

Answers

Step-by-step explanation:

So basically what you want to do is divide how much ounces of oats you need in total by the amount the spoon will hold.

Total amount of oats needed ÷ How much the spoon holds = ?

So now you just add your values:

26 ÷ 4 = ?

26 ÷ 4 = 6.5

6.5 IS greater than 1

So, your equation could be one of these two:

Total oats needed ÷ How many oats the spoon will hold = ?

OR

26 ÷ 4 = ?

My sister is 12 years old. My brother says that his age minus twelve is equal to my sister's age. How old is my brother?

Enter an equation, using as your variable, to find how old my brother is.

The equation is

Answers

x-12=12

x=24

your brother is 24 years old

can i please have help with this question

Answers

Answer:

500 millieters

Step-by-step explanation:

1 liter is 1000 millileteres

so .5 liters is 500 millileters

Answer:

500

Step-by-step explanation:

1 liter equals 1000 milliliters and it is half/.5 which is 500

HELP ME ITS URGENT I NEED THIS TODAY

Answers

Answer:

Perhaps, x = 9 ?

Step-by-step explanation:

I’m pretty sure that x=9
4x4=16
3x3=9
I hope this helps

HELP! It's really easy! It's due really soon but I have other assignments I need to get done... Please and thanks!

Answers

Answer:

35.235

5.62

23,845.05

0.727

22.325

Step-by-step explanation:

Answer:

35.235, 5.62, 23845.05, 0.727, 22.325.

Step-by-step explanation:

hope this helps! pls give brainliest!

true or false the five ways to display a relation are with ordered pairs, tables, mapping diagrams, a graph, and an equation.​

Answers

Answer:

I would say false

Step-by-step explanation:

the five ways i learned: Graph, Table, Symbols, Words, & Picture/context.

Does this graph represent a function? Why or why not?

Answers

No because I ain’t no simp!!

Please help me with ptomblem

Answers

Answer:

When [tex] p^2 - 4p [/tex] is subtracted from [tex] p^2 + p - 6 [/tex], the result is [tex] 5p - 6 [/tex]. To get [tex] p - 9 [/tex], subtract [tex] 4p + 3 [/tex] from the result.

Step-by-step explanation:

✔️Subtracting [tex] p^2 - 4p [/tex] from [tex] p^2 + p - 6 [/tex]:

[tex] (p^2 + p - 6) - (p^2 - 4p) [/tex]

[tex] p^2 + p - 6 - p^2 + 4p [/tex] (Distributive property)

Collect like terms

[tex] p^2 - p^2 + p + 4p - 6 [/tex]

[tex] 5p - 6 [/tex]

✔️Subtracting [tex] p - 9 [/tex] from [tex] 5p - 6 [/tex]:

[tex] (5p - 6) - (p - 9) [/tex]

[tex] 5p - 6 - p + 9 [/tex] (distributive property)

Add like terms

[tex] 4p + 3 [/tex]

draw a graph for 4,16 ; 6,36 ; 8,64 ; 10,100 points​

Answers

Answer:

tyyyyy for free points have a great day

What is the measure of

Answers

Answer:

58, 66, and 56 just for U It would be 66

Step-by-step explanation:

Because the both triangles are congruent (The same)

Answer:

66

Step-by-step explanation:

2.12.3

Ella's father paid her $9.15 for helping him rake leaves, clean flower beds, and haul trash. If she received an equal amount for each job, how much did he pay her for raking the leaves?

Answers

Answer:

$3.05?

Step-by-step explanation:

I needddddddddd helppppppppp

Answers

Answer:

[tex]\frac{2}{-3}[/tex]

Step-by-step explanation:

To find the slope you only need two points from the table, and the equation [tex]\frac{y1-y2}{x1-x2}[/tex]

(1,-2) (4,-4)

[tex]\frac{-2+4}{1-4}[/tex] = [tex]\frac{2}{-3}[/tex]

Which inquality is graft below?

Answers

Answer:

Option C - 2x + y > 2

Step-by-step explanation:

We don’t have to do some serious math here. We can already eliminate half of the options just looking at it, because the graph has a dotted line, which means it does not include those values.

So, choses A and B are eliminated because the inequality shows the ≥ and ≤ symbol, which means that it does include those values. It’s either C or D because they have the > and < symbol, which means that the inequality does not include those values.

To have a better look at the inequalities, write them in slope-intercept form, which is y=mx+b:

Option C: y > -2x + 2

Option D: y < -2x +2

Just looking at the inequlaity symbol, we can tell that Option C is the correct one because it shows that all the y-values are greater than -2x + 2. Which is true because it’s shaded above the line. When it’s shaded above the line, it means that the y-values are greater.

To make sure my answer was correct, I graphed Option C. The image below shows Option C (2x + y > 2) graphed.

Hope this helps! :)

The dimensions if a square are doubled. What happens to the are of the square? A) The area triples B) The area doubles. C) The area quadruples. D) The are stays the same.

Answers

Answer:

THE ANSWER IS B

Step-by-step explanation:

What is the solution to the system of equations?

y = 1/3x -10

2x + y = 4

(–8, 6)
(–6, 16)
(6, –8)
(16, –6)

Answers

Does it tell you what process to use
Like graphing Substitution or elimination

Sorry :l

Karen finished watching a movie at 1:10pm. The movie lasted 1 hour 38 minutes. Click on the time Karen started watching the movie.

Answers

Answer:

11:32

Step-by-step explanation:

Karen probably started watching the movie at 11:32 because 11:32 + 1:38 = 1:10.

32+ 38= 70, so 11:00 + 70 = 12:10, plus 1 hour = 1:10.

Answer:

11:32

Step-by-step explanation:

This scatter plot shows the height of a card tower and time in minutes used to build it. Based on the information in the scatter plot, what is the best prediction for the height of a card tower at 10 minutes?
A 3 inches
B 5 inches
C 7 inches
D 8 inches​

Answers

It would have to be 5 inches

The required measure of the height of the card tower at time 10 minutes is 5 inches. option B is correct.

Given that,
This scatters plot shows the height of a card tower and time in minutes used to build it. Based on the information in the scatter plot,

What are Scatter plots?

A scatter plot is a collection of points plotted on two axes, horizontal and vertical. Scatter plots are useful in statistics because they illustrate the extent, if any, of correlation between the values of observed quantities or phenomena (called variables).

Here,
From the graph, the measure of the height of the card tower at time 10 minutes is to be more than 5, Following the greatest integer function the measure of the card tower is given as 5 inches.

Thus, the required measure of the height of the card tower at time 10 minutes is 5 inches. option B is correct.

Learn more about scatter plots here: https://brainly.com/question/29231735
#SPJ5

You hear that tuition is going to increase by 3% next year. If tuition
this
year is $7,200 this year, what will the tuition be next year?

Answers

Answer: $7416

Step-by-step explanation:

You look up 3% of $7200 ($216) and add that to the original price to get $7416 :)

HEY YOU! can you help me ?❤️

Answers

The answer is C.

If you take away one zero from both the denominator and the numerator, you are left with the fraction 6/10

Question:
Find the limit
x2 – 3x – 28/x-7
lim 7

Answers

See attachment for math work and answer.

Write the equation of the circle graphed below

Answers

Answer:

there is no circle

Step-by-step explanation:

you can add a photo with the lil link looking thing when you first ask the question

Answer:

srry no circle. I'd be happy to help if you update it tho.

Step-by-step explanation:

pls help me thank you!!

Answers

Have you figured it out?

Question 5
5 pts
Let f(x)
40e^.06t. What is the average rate of change of f over the
interval [0,3]? Give your answer as a decimal with one place of
accuracy to the right of the decimal point.

Answers

Answer:

[tex]R= 2.6[/tex]

Step-by-step explanation:

Given

[tex]f(x) = 40e^{.06t[/tex]

[tex][a,b] = [0,3][/tex]

Required

Determine the average rate of change (R)

This is calculated as follows:

[tex]R = \frac{f(b) - f(a)}{b - a}[/tex]

Where

[tex]a = 0[/tex] and [tex]b = 3[/tex]

Substitute 0 for a and 3 for b

[tex]R = \frac{f(3) - f(0)}{3 - 0}[/tex]

[tex]R = \frac{f(3) - f(0)}{3}[/tex]

[tex]R = \frac{1}{3}[f(3) - f(0)][/tex]

Calculate f(3)

[tex]f(x) = 40e^{.06t[/tex]

[tex]f(3) = 40e^{.06*3}[/tex]

[tex]f(3) = 40e^{0.18}[/tex]

[tex]f(3) = 40 * 1.197[/tex]

[tex]f(3) = 47.88[/tex]

Calculate f(0)

[tex]f(x) = 40e^{.06t[/tex]

[tex]f(0) = 40e^{.06*0}[/tex]

[tex]f(0) = 40e^{0}[/tex]

[tex]f(0) = 40*1[/tex]

[tex]f(0) = 40[/tex]

So, the expression:

[tex]R = \frac{1}{3}[f(3) - f(0)][/tex]

[tex]R= \frac{1}{3}[47.88 - 40][/tex]

[tex]R= \frac{1}{3}[7.88][/tex]

[tex]R= 2.62666666667[/tex]

[tex]R= 2.6[/tex]

Hence, the average rate of change is approximately 2.6

The WHS Football team is trying to raise money to buy new equipment so the players are selling wacko cards for $20 each if the football team needs to raise at least $3000 for equipment right any quality to represent the situation and find the least number of wacko cards the team must sale

Answers

Answer:

150

Step-by-step explanation:

3000/20

150.

$$$$$$$$$$$$$$$$$

tyler plans to start a lemonade stand and is trying to perfect his recipe of lemonade. he wants to make sure the recipe doesnt use too much lemonade mix (lemon juice and sugar) but still tastes good.

Answers

Answer:

All he has to do is make it taste good.

Step-by-step explanation:

12 hungry friends see 8 cupcakes sitting b.
on the table. If they split the cupcakes
equally, how many does friend each get?
12 other friends are told they can eat 0.8 cupcakes each. How many total cupcakes do these 12 friends eat?

I already got the answer for the first question, but i only want to know how to do the next question, I do NOT want the answer. Thanks!

Answers

1: 1/2 cupcakes
2: I’m in middle school so uhm-

Answer: a. 1 1/2   b. 9.6

Step-by-step explanation:


Roy works at the local grocery store and is paid $6.00 per hour. The
graph shown describes his salary, s, based on the number of hours, the
works.
S
19
18
17
16
15
14
18
12.
11
10
I
8
7
6
5
4
3
2
1
0
1 2 3 4 5 6 7 8
Which is an equation of the graph shown?
OA:
S=6+t
B:
S = 60
S
OD:
Mark Question For Review

Answers

Answer:

S=6t

Step-by-step explanation:

6 dollars per hour

GIVING BRAINLIST am i right?

Answers

Answer:

yes

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

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