7x-6y=9
5x+2y=19 Solve the system using elimination.

Answers

Answer 1

Step-by-step explanation:

multiply 5x+2y=19 by 3 youll get 15x+6y=57

eliminate y

7x-6y=9

15x+6y=57 +

22x=66

x=3

substitute x to 5x+2y=19

15+2y=19

2y=4

y=2


Related Questions

What are four ways to represent functions?

Answers

A function can be represented verbally. For example, the circumference of a square is four times one of its sides.
A function can be represented algebraically. For example, 3x+6 3 x + 6 .
A function can be represented numerically.
A function can be represented graphically.

A function shows the relationship between at least two variables. There are several ways to represent a function; some of them are:

Using tablesUsing equationsUsing graphsBy verbal expressions

Tables

The following table shows the relationship between two variables x and y

[tex]\left[\begin{array}{cccccc}x&1&2&3&4&5\\y&2&4&6&8&10\end{array}\right][/tex]

Equations

Notice that the y values of the above table are twice the corresponding x-values.

So, the equation can be represented as:

[tex]y = 2x[/tex]

Graphs

See attachment for the graph of [tex]y = 2x[/tex]

Verbal

As stated above, the value of y is twice the value of x.

The above statement is a verbal representation of a function

Hence, a function can be represented with a table, graph, equation and verbally.

Read more about functions at:

https://brainly.com/question/6241820

This is due today, please help!!! I will give brainliest.

Answers

Answer:

Step 1, all the exponents are increased by 4

Step-by-step explanation:

The first incorrect step occurred in Step 1, where all the exponents were increased by 4.

This is mathematically incorrect due to exponential rules. When distributing exponents inside parentheses, we have to multiply the existing exponents inside the parentheses by the exponent outside the parentheses.

For example, (x²)³ is not x²⁺³, but rather, x⁽²⁾⁽³⁾.

We multiply the exponents instead of adding them together.

Therefore, the correct Step 1 should multiply all the variables' exponents by 4.

Steps 2 and 3 are correct since we do add the exponents when multiplying exponents with the same base, and we do subtract exponents with the same base when dividing.  

Ava's family has completed 40% of their road trip. They have traveled 72 miles. How many miles is the trip?

Answers

Answer:

180 miles

Step-by-step explanation:

if you divide 72 by 4 you can see what 1/10 of the trip is, which is 18. 18 times 10 (since 18 is one tenth of it) equals 180. hope this helps!

what is the area of 4 1/2 feet wide and 6 1/2 feet long

Answers

Answer: 29 1/4

Step-by-step explanation:

Multiply and simplify to 29 1/4

Given the equation kx – 17 = 51 + x, where k=1, solve for X.

Answers

Answer:

No solution for x, when k = 1x = 68/(k - 1), when k≠ 1

Step-by-step explanation:

Given the equation

kx – 17 = 51 + x, where k = 1,

Solve for x:

1*x - 17 = 51 + xx - 17 = x + 51x - x = 51 + 170 = 68,

Incorrect equation, no solution for x when k=1

Solving for x when  k ≠ 1

kx - 17 = 51 + xkx - x = 51 + 17x(k - 1) = 68x = 68/(k - 1)

How many different 5-digit whole
numbers can be made using the
digits: 2,3,4,5, and 6 when each
digit can be used once only?

Answers

Answer:

120

Step-by-step explanation:

so

?????

this 5 interrogative marks are our 5 digit number

for the first place you have 5 choices(2, 3, 4, 5, 6)

for the second:4

for the third:3

for the fourth:2

and for the fifth:1

you multiply this choices

5×4×3×2=120

Fill in the blanks needs to be done by 9:30!!

Answers

Answer:

1. Straight line

2. mx+b

3. slope , y intercept

4. dont know sorry

Step-by-step explanation:

The blanks are: (in order)

•Straight Line
•Mx+b
• (not sure)
• (not sure)
•constant

a car uses 8 gallons of gas to travel 290 miles. how much gasoline will the car use to travel 490 miles

Answers

Answer:

11.03

Step-by-step explanation:

To find this answer, you would need to find how many miles 1 gallon of gas will take them. To find this, you would do 290÷8=36.25. So with this information, you will be able to find out how much gas it would take to travel 400 miles. You would do 400÷36.25=11.03. 11.03 would be how many gallons of gas is used to travel 400 miles.

I will give brainliest to who answers this. Please answer quick

Answers

Answer:

Im pretty sure it would just be g= -p+15

Step-by-step explanation:

I really hope this helps, if not I am so sorry

Answer:

G= 1/6p -15

Step-by-step explanation:

Let's solve for g.

p=6g+90

Step 1: Flip the equation.

6g+90=p

Step 2: Add -90 to both sides.

6g+90+−90=p+−90

6g=p-90

Step 3: Divide both sides by 6.

6g/6 = p−90/6g

=1/6p−15

Find the sum of the interior angle measures of a convex 15-gon (a fifteen-sided polygon).

Answers

Answer:

2340 degrees.

Step-by-step explanation:

The sum of the interior angle measures of any polygon can be calculated using the following expression ([tex]n[/tex] is the number of sides the polygon has):

[tex]180(n-2)[/tex]

For a 15-sided polygon, plug in 15 for n and simplify:

[tex]180(15-2)=180(13)[/tex]

Multiply to solve:

[tex]180(13)=2340[/tex]

For a 15-sided polygon, the sum of the interior angles must be 2340 degrees. You can go a step further and divide 2340 by 15 to figure out the individual measure of each interior angle (156 degrees).

The sum of the interior angles of a fifteen-sided polygon is 2340°.

What is the formula for interior angle of a regular polygon?

The formula for calculating the sum of interior angles is (n-2)×180° where is the number of sides. All the interior angles in a regular polygon are equal. The formula for calculating the size of an interior angle is: interior angle of a polygon = sum of interior angles ÷ number of sides.

Given that, a fifteen-sided polygon.

Now, the sum of the interior angle measures is

(15-2)×180°

= 13×180°

= 2340°

Therefore, the sum of the interior angle measures is 2340°.

Learn more about the sum of interior angles here:

https://brainly.com/question/28793979.

#SPJ2

convert 2,000,000mm into Decametres

Answers

Answer:

200

Step-by-step explanation:

1 decameter =10,000

so 2,000,000/10000=200

Answer:

200

Step-by-step explanation:

To convert 2,000,000mm into Decameters

Formula = Divide the mm to 10,000

2,000,000/10,000 we get 200

Write an equation of the line that passes through the given points.
(2,6) (-4,-2)

Answers

Answer:

y = 8/6x + 10/3

Step-by-step explanation:

You find the slope (m) first which is

Change of y over change of x

(6) - (-2)   over   (2)- (-4)

8/6 = m

Then you plug it into the equation y = mx + b

y = (8/6)x + b

Now you pick any of the set of points to plug in for x and y to solve for b

(6) = (8/6)(2) + b

6 = 8/3 + b

b = 10/3

Then plug into the equation for just m and b to get the equation of the line that passes thru both sets of points.

y = 8/6x + 10/3

ill give brainlist if someone can help me with this question

Answers

Answer:

m = 1 and b = 5/7

Step-by-step explanation:

Take two of the points. The first two. (7, 5) and (8, 6).

We can find the slope using:

y2-y1/x2-x1

We can sub in the values:

6-5/8-7 = 1/1 = 1

So the slope is 1

now, putting this into y=mx+b, and using one of the coordinates from earlier, we can solve for b:

5 = (1)(7) + b

b = 5/7

Therefore, m = 1 and b = 5/7

Hope this helps!

Which of these is a unit rate? (from time4learning)
(A). $3.50 for 2 gallons of juice
(B). $5.00 for 3 pounds of cheese
(C). $4.25 for 1 watermelon
(D). $2.75 for 6 hamburger rolls

Answers

Answer:

B

Step-by-step explanation:

B. is the answer that you seek

What are vernal pools?
A lakes
B swimming pools
C hollows where water collects
D caves where wild animals sleep

Answers

Answer: C. Hollows where water collects :)

Step-by-step explanation:

A manufacture of spark plugs how's it going producing less than 2% affective ones. Of the last 8000 spark plugs, 13 were defective. a. What is the experimental probability that the next sparkplug will be defective? b. Did the manufacture reach his goal? Explain.

Answers

Answer:

P = 0.001625

yes, it did

Step-by-step explanation:

given data

affective ones = 2%

spark plugs = 8000

defective = 13

to find out

experimental probability that the next sparkplug will be defective and Did the mannufacturer reach its goal

solution

we know that there are 13 are defective out of 8000

so P = 13 ÷ 8000

P = 0.001625

so  that P( the next sparkplug will be defective) is = 0.001625

and

yes, we mannufacturer to reach goal

because 0.001625 < .02

So, the goal is reached as the experimental probability is less than 2%

Figure A is a scale image of Figure B.
16
10
Figure A
12.5
Figure B
What is the value of x?

Answers

Answer:

20

Step-by-step explanation:

I got it correct on khan

Can someone help me solve all of these problems for brainliest and a heart? please and thank you!

Answers

Answer:

Top Right Problem: PACKAGE #2 and $0.80

Bottom left: BAND and $0.05

Bottom Right: PEPSI and $0.05

pls help will give brainisest.
Find the length of A.

Answers

Answer:

If i'm correct I think that the length of a would be 4 because it shorter then five just by a minuscule measure .

Step-by-step explanation:

In the diagram AB is parallel to CD. What is the value of X

Answers

Answer:

B) 120

Step-by-step explanation:

Maxine spent 15 hours doing her homework last week. This week she spent 18 hours doing homework. She says that she spent 120% more time doing homework this week. Is she correct? Show your work to justify your decision.

Answers

Answer:

I think it's wrong but.....2.7

Step-by-step explanation:

15:100=0.15

0.15×18=2.7

what is 3a + 2b - 6c

Answers

Answer:

Step-by-step explanation:

a = 3

b = 2

c = 12

3a+2b-6c

3(3)+2(2)-6(12)

-59?

What does x=? I'm really not sure about this.

Answers

Answer:

9

Step-by-step explanation:

For this, we need to know the scale factor first. We can do that by looking at a same side of the two shapes.

CD = 2 and ML = 3.6

3.6 / 2 = 1.8

just to confirm, let's take MN = 7.2 and DE = 4

7.2 / 4 = 1.8

So now we know the scale factor is 1.8

Now to figure out x, we just need to use BA = 5

and because the scale factor is 1.8

so we just need to do: 5 * 1.8 = 9

X= 9
Because all you have to do is divide one of the bigger sides by one of the smaller sides on the other shape and you will get the scale factor of 1.8 and when you take 1.8 and divide it by 5 you would get 9

Someone please answer this for me ASAP

Answers

Answer:

m=-1/2

Step-by-step explanation:

7+1-8-5||
(1-4) +17
What the answer

Answers

Answer:

Step-by-step explanation:

-5(3)+13

?? anyone know thank you❤️

Answers

Answer: 9/8

Step-by-step explanation:

you turn 1/2 into 4/8 and add that to 5/8 to get 9/8

Using addition, subtraction, multiplication, division, exponents, grouping symbols, and at least one positive and negative number, make an expression equal to 10 (no repeating numbers)

Answers

Answer:

2 + 3 (1) + (10 / 5)^2 + 7 - 6  = 10

Step-by-step explanation:

2 + 3 (1) + (10 / 5)^2 + 7 - 6

= 2 + 3 + (2)^2 + 7 - 6

= 2 + 3 + 4 + 7 - 6

= 10

A new app charges an annual fee plus an additional fee per new game downloaded. The table shows the linear relationship between the number of new games downloaded and the total cost including the annual fee. Which statement is true?


A.
The additional fee per game is $10.

B.
The additional fee per game is $1.99.

C.
The annual fee is $1.99.

D.
The annual fee is $19.99.

Answers

The correct answer is below:

A 4-ounce serving of yogurt has 8 grams of protein. How many grams of protein are in a 16-ounce serving container of yogurt? *

Answers

Answer:

16/4 = 4

4 * 8 = 32

32 grams in a 16 ounce serving

Answer:

32 grams of protein

Step-by-step explanation:

We know that 8 is double of 4, which means that if you have 16 ounces you are going to multiply by 2 to double it, which gives you 32.

of the following functions represent
exponential growth?
f(x) = 001(1.77)*
f(x) = 2(1.5)
f(x) = 5(0.5)*
f) = 5e+
DONE
PLEASE HURRY 100 POINTS

Answers

Answer:

a,b,c

Step-by-step explanation:

edg

Answer:

A. f(x) = .001(1.77)x

B. f(x) = 2(1.5)^x/2

C. f(x) = 5(0.5)^-x

Step-by-step explanation:

Correct on Edge 2022

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