Solve using substitution. x = 2 7x + 9y = –13

Answers

Answer 1

Answer:

y=-3 Hope this helps!

Step-by-step explanation:

7(2)+9y=-13

9y=-13-7(2)

9y=-13-14

9y=-27

y=-3

Answer 2
the answer is y=-3 !!!!

Related Questions

Which side lengths could create a triangle?
A. 5 cm, 5 cm, 15 cm
B. 5 cm, 10 cm, 20 cm
C. 10 cm, 10 cm, 15 cm
D. 10 cm, 10 cm, 20 cm​

Answers

Answer:

b

Step-by-step explanation:

Answer:

C. 10 cm, 10 cm , 15 cm

Step-by-step explanation:

In order to form a triangle the sum of two sides of a triangle should exceed the third side so

if we use option B then

10 + 10 > 15

20> 15 (True) ✔

10 + 15 > 10

25 > 10 (True) ✔

Make up 2 situations on your own. One should show an increase and one should show a decrease. After you write the situation, draw and label a diagram to match and write an equation in y=kx form. You may use a fraction, mixed number or a decimal.

*Be resourceful…look at your workbook and the problems on the other page for ideas. You must come up with your own ideas.

Answers

Answer:

supy and demand is a increasing

suppy and price is a decrease

What is the dependent quantity, and which variable should represent it?
y= -5x + 100

Answers

x = 20. Hope this helps!

please help me with this

Answers

Answer:

x is being divided by 2

to undo the operation you should multiply

x=6

X is being divided by 2. To undo that operation you should multiply 2 by both sides. The solution is x=6.

On a cold winter day, the temperature in Minneapolis was 12 degrees below zero. On the same day, the temperature in Anchorage was – 21 degrees below zero.
In which city was it colder? Explain how you know. plz help

Answers

Answer:

Anchorage was colder, because in Minneapolis it was -12 degrees, and in Anchorage it was -21 degrees, and 21 is more than 12.

Instructions for a craft project say that the length of a piece of red ribbon should be 7 inches less than the length of a piece of blue ribbon. How long is the BLUE ribbon if the length of the RED ribbon is 12 inches?

Answers

r = red, b=blue

r = b-7
12= b-7, add 7 to both sides
19= b

Checking answer, if blue is 19 inches, 7 inches less than that is 12, which is the length of the red.
The blue ribbon is 19 inches long

Which answer choice best represents 3/15?
plz plz plz plz plz plz plz plz plz plz plz plz hhhhhhhhhhhhhhhhhhhhuuuuuuuuuuuuuuuuurrrrrrrrrrrrrrrrrrrrrrrryyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

Answers

Uhh... what are the options?

Here's some possible ones:

0.2

1/5

Answer:

0.2 or 1/5

Step-by-step explanation:

not sure what the options were

Frank buys an item for $9.01 . He gives the cashier a $50 bill. How much money should Frank get back?

Answers

Answer:

$40.99

Step-by-step explanation:

$50 - $9.01 = $40.99

Therefore he will get $40.99 back.

Please mark brainliest!

Frank should get back $40.99

Please help very urgent on test...

Write and solve an equation that can be used to find the value of x then find the perimeter of each shape

Answers

Answer:

Equation: (2x+5)4=(2x+8)3

X: 2

Perimeter: 36

Step-by-step explanation:

You would multiply 2x+5 and 4 because there are four sides to a square, so the perimeter of the square would be 8x+20. This would go same for the triangle, making the perimeter 6x+24.

So 8x+20=6x+24 is your new equation. Then, you do the opposite of the order of operations, and add or subtract first. It would be easiest to subtract 20 and 6x from both sides.

That leaves you with 2x=4. Dividing 2 by both sides means x=2

You can plug this in to prove if it is correct.

16+20=36

12+24=36

Lmk if you get it!

Given PQRS∼JKLM, find KL.

Answers

Answer:

KL = 1.8

Step-by-step explanation:

Find out what the dilation of the shape is. In this case it's 1.3

Next divide QR by the dilation factor 1.3, which gives you 1.8.

Answer:

1.8

Step-by-step explanation:

What is the slope of line a?
A. -1/4
B. -4
C. 4
D. 1/4

Answers

Answer:

A. -1/4

Step-by-step explanation:

The line is going down making the slope negative and doing rise over run the slope is -1/4.

[tex]\frac{1- 0}{0-4}[/tex]= 1/-4 = -1/4

The answer is A for your question

Which solid is not a pyramid?
O A.) A shape with a triangle base and 3 triangular sides.
O B.) A shape with a rectangle base and 4 triangular sides.
O C.) A shape with a rectangle base, 2 triangular sides, and 2 rectangular sides.
O D.) A shape with a rectangular base and 4 triangular sides.

Answers

The answer would b d

Answer:

O B.) A shape with a rectangle base and 4 triangular sides.

Please help on this question, I will really appreciate it. I will definitely give brainliest to the answer whom gives the full PROOF, answer, and the statement and reason.

Answers

Answer and step-by-step explanation:

Here is the proof!

UR II ST - Givenm<USR = m<SUT - Alternate interior anglesm<R = m<T = 90º - GivenUS = US - Reflexive propertyTriangle RSU = Triangle TUS - AAS {2,3,4}

Hope this helps!!

Answer:

UR II ST - Given

m<USR = m<SUT - Alternate interior angles

m<R = m<T = 90º - Given

US = US - Reflexive property

Triangle RSU = Triangle TUS - AAS {2,3,4}

Step-by-step explanation:

Just took it. Good luck!

PLease only write if you know the answer or give it a nice shot tomroow i will be giving free point and btralist so dont put nothing ramdom here :)

Answers

Answer:

The one on the bottom left

Step-by-step explanation:

it's the only graph that the points match up on.

its brilanst thats all :)

Last month we had 18 days of either rain or snow. There were 8 more days of snow than rain. How many days did it snow?

Use guess check

Answers

Answer- 15 days of snow
Explanation- if it snowed 15 days than it rained 3 days and that way it snowed 8 more days than it rained last month.

Answer:

13 days of snow!!

Step-by-step explanation:

Hope this helps! i just did this at my school and got it right

In ∆AED, m∠DAE = 54°. What is m∠DAG??



m∠DAG =
°

Answers

Answer:

126

Step-by-step explanation:

(:

please help

1) _____

2) _____

3) _____

4) ____

5) ____

Answers

Answer:

1 B

2 C

3 E

4 D

5 A

Step-by-step explanation:

1. W is less than Zero

2. W is equal or less than Zero

3. W cannot equal Zero.  W is more than Zero or less than Zero

4. W is equal or greater than Zero

5. W is greater than Zero

agree with the one above

I would appreciate if somebody helped me please! :)

Answers

Answer:

23 cents

Step-by-step explanation:

3.68/16=.23

(MIDDLE SCHOOL MATH) Please help, I want to double check my answer. Thank you!

Answers

26.68 is with taxes and 30.16 with taxes and the tip (the tip is 3.48) u add up the total of his order and search up what’s 15% of that cost u add that 2 times I’m sorry if I did it wrong
26.68 is the answer without taxes

Pls help it is due today

Answers

SA= 2x(9+6+6)
=2x21 = 42 square centimeters
It’s 42 cm I think, sorry for being late

Answer fast, please. I need help on it!

Answers

Answer:

Missing temp: -5

Step-by-step explanation:

-5 you add them all up and get the average and that’s the answer

The Large Hadron Collider at a research lab is contained in a circular tunnel with a circumference of 26.7 km. What is the radius in kilometers of the circular tunnel in terms of π?

Enter the correct answer in the box.

[ ]km

Answers

Answer:

4.2494369805536 km

Step-by-step explanation:

r = 4.2494369805536km because 26.7/2π which means:

26.7 ÷ 3.14159265359 x 2 = 4.2494369805536 km.

Answer:

13.35/π km or 26.7/2π km

Step-by-step explanation:

"In terms of π" means leave pi in the answer. No need to use a decimal equivalent.

The radius is half of the circumference divided by π.

Veronica spent a minimum of $65 on a doll and accessories for the doll. The doll cost $26 and the accessories cost $13 each. Write an inequality can be used to find the possible values for x, the number of doll accessories Veronica could have bought.

Answers

Answer:  [tex]13x+26 \ge 65[/tex]

If you solve for x, you get [tex]x \ge 3[/tex] which means she bought at least 3 accessories.

=========================================================

Explanation:

x = number of accessories, some nonnegative whole number

13x = amount spent on accessories only

For instance, let's say she bought 5 accessories. This means she spent 13x = 13*5 = 60 dollars on those five items.

This is on top of the $26 Veronica paid for the doll itself (without the accessories). In total, she spent 13x+26 dollars for the doll (26) and the accessories (13x) combined.

We're told she spent a minimum of $65, which means that she spent 65 or more dollars.

So the total cost (13x+26) must be equal to 65 or larger than 65.

We write that as [tex]13x+26 \ge 65[/tex] which sets up the inequality.

----------------------------

Let's solve for x

[tex]13x+26 \ge 65\\\\13x \ge 65-26\\\\13x \ge 39\\\\x \ge 39/13\\\\x \ge 3\\\\[/tex]

So x can be equal to 3, or larger than it.

The lowest value x can be is 3.

Meaning that she bought at least 3 accessories (ie she bought 3 or more accessories).

Answer:

Step-by-step explanation:

65= 26+13x

5TH GRADE MATH
Please use a square grid to solve
4cm^2 * 1 1/4 cm^2

please send me a picture of the work im so conufsed

Answers

Answer:

Area = side x side

= 8 x 8

Area = 64 in²

Step-by-step explanation:

5.0 × 10-8 m4
Sry if this is wrong

a.Fill in the table for side length and area of different squares. side length (cm) area (cm 2 ) 3 100 25

Answers

the answer to the table is 0.9

༼ つ ◕_◕ ༽つ¯\_(ツ)_/¯(⊙_⊙;)☜(゚ヮ゚☜)(☞゚ヮ゚)☞(ˉ﹃ˉ)ಠ_ಠ

Jerry bought a DVD recorder for $280. Now it is on sale for $220. Find the percent of change in the price. Round to the nearest whole if necessary.

Answers

Answer:

1.27 repeating

Step-by-step explanation:

Plsss Help!!! Will mark brainiest!! Due soon!!
What is the distance between (-4, 1) and (1, -3)?

Answers

Answer:

√41

Step-by-step explanation:

Top is the formula, and the bottom would be how to plug in the points.

Answer:

[tex] \sqrt{41} [/tex]

Step-by-step explanation:

d=√((x_2-x_1)²+(y_2-y_1)²

lets solve

[tex] d= \sqrt{ (- 4-1)²+(1 + 3)²} [/tex] after solving this equation we will find it equal to root 41

Solve each equation. Type only the number solution, without x =
1. 3x = 42
2. x ➗ 5 = 24


3. x ➗ 2.1 = 4.4
4. 5x = 80



5. 88 = x ➗ 2.2
6. 1.4x = 15.4

7. 7x = 54.6
8. 144 = x ➗ 3.1


9. x ➗ 7.5 = 3.5
10. 2.64 = 0.4x


11. 13x = 117
12. x ➗ 3 = 0.67

Answers

1. X = 14
2. X = 120
3. X = 9.24
4. X = 16
5. X = 193.6
6. X = 11
7. X = 7.8
8. X = 446.4
9. X = 26.25
10. X = 6.6
11. X = 9
12. X = 2.01
1. 14
2. 120
3. 9.24
4. 16
5. 193.6
6. 11
7. 7.8
8. 446.4
9. 26.25
10. 6.6
11. 9
12. 2.01

An isosceles triangle (2 sides are equal) has a base of 5 cm and legs "x" cm long. The perimeter is no more than 30 cm. Write an inequality to find the possible values of x.

Answers

if it is no more than 30 it could be 12 since 12+12=24 24+5=29

Cheddar cheese costs $4.25 per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese?
x = 4.25 + y
x = 4.25 y
y = 4.25 + x
y = 4.25 x

Answers

y = 4.25x

x represents each pound of cheese and each pound costs $4.25
The last one y=4.25 x
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