y=5x+2
4x−y=0


Is (2,12) a solution of the system?

Answers

Answer 1

Answer:

no the solution would be (-2, -8)

Step-by-step explanation:

i graphed both of the equations and found the solution <33

Answer 2

Answer:

(-2,-8) is correct

Step-by-step explanation:

4x = y

5x +2 = y

4x = 5x +2

-2 = x

y = 5×-2 + 2

=-8

( x , y )


Related Questions

2+5.67890654321678-5432

Answers

-5,424.3 ...............

Number 13 and 14 don’t matter but help ‼️

Answers

find a common denominator for every single pair of fractions
that will help you find the answer
i can do a couple but not all, hopefully my explanation will help you do the rest

3/5 and 3/3
3/15 and 3/15
9/15 and 15/15
15/15 is greater than 9/15

An item is regularly priced at $ 70. It is on sale for 40% off the regular price. How much in dollars) is discounted from the
regular price?

Answers

Answer:

42

Step-by-step explanation:

70 minus 40 percent equals 42

A group of friends are at a baseball game and are purchasing souvenirs. Olivia purchased 1 t-shirt and 5 baseball caps, spending a total of $165. Her Marco purchased 1 t-shirt and 4 baseball caps, which cost him a total of $137. Assuming that all of the t-shirts and all of the caps are the same price, what is the price of each?

Answers

Answer:

baseball cap = $28

t-shirt =  $25

Step-by-step explanation:

Olivia: t +5b = 165

Marco: t + 4b = 137

isolate t in Olivia's equation

t = 165 - 5b

plug t into Marco's equation

165 - 5b + 4b = 137

165 - b = 137

b = 28

plug b into either equation

t + 4b = 137

t + 4(28) = 137

t + 112 = 137

t = 25

In an isosceles triangle, one of the equal interior angles is equal to the adjacent exterior
angle divided by 5. What are the values of the 3 interior angles in the triangle? Make sure
to draw and label a sketch of the triangle.

Answers

Answer:

Step-by-step explanation:

can you show a picture?

The value of 3° is
its from the chapter exponenets

Answers

Answer:

1

Step-by-step explanation:

=>. the value of 3° = 1

=> it is known to us that any number to the

power zero is equals to 1

hope it helps

Jazmine's bakery shop Sells doughnut boxes for $10, In addition $5 for the toppings

Answers

Answer:

y=10+5x

Step-by-step explanation:

Have a great day

LOOK AT PIC PLS THX!! I WILL TRY TO GIVE BRAINLIEST TO RIGHT ANSWRR

Answers

Answer:

240 ounces

Step-by-step explanation:

y'know you could just look this up lol

Answer:

240 oz

Multiply pounds by 16

15 × 16 = 240

Help please its geometry

Answers

Answer:

b

Step-by-step explanation:

Opposite angles are equal in a parallelogram. Therefore 2 angles are 112°. Angles in a parallelogram or any quadrilateral are equal to 360°. To find the remaining sides: 360-(112×2) and divide your answer by 2.

HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Answers

Answer:

x = 5.

y = -2

Step-by-step explanation:

y = x - 7

2x + y = 8

substitute the first equation into the second

2x + (x -7) = 8

2x + x - 7 = 8

3x - 7 = 8

3x = 8 + 7

3x/3 = 15/3

x = 5.

substitute 5 in the second equation

y = 5 - 7

y = -2

Answer :
x = 5 and y = -2

Solution : mark as brainliest plz

how many ounces are equivalent to 6 pounds?​

Answers

Answer:

96

Step-by-step explanation:

1 pound is 16 ounces

6 pounds=x ounces

So we use the X to signal it's presence

1x16 is 16,

That means 16 ounces

6xP=Q

6x16 will give us our answer

Because it will tell us how many pounds there are since ounces is multiplied to get ounces.

6x16=96

P=16

Q=96

96 is our answer.

I hope this helps!!!!

If you need help, don't hesitate to ask!

I'm here until 2:30

May I please have brainliest?

PLZZ HELPP
Find the volume.

Answers

Answer:

330yd^3

Step-by-step explanation:

multiply all of them

Answer:

330 yd^3

Step-by-step explanation:

V=w*h*l

V=5*6*11

V=330 yd^3

14. A system of equations is shown below. For what value of a will this system have no solutions? Justify your answer.
y = 4x-9
y = ax+6​

Answers

Answer:

a = 4

Step-by-step explanation:

a = 4

If a = 4, then both lines have the same slope and different y-intercepts. That makes both lines parallel. Since the lines never intersect, there is no solution.

Answer:

x can not equal zero, as it would cause division by zero.

Step-by-step explanation:

First, let's make one equation out of them and see what we get.  Because both of them have y on the left, we can say that the two right sides are equal, giving us:

4x - 9 = ax + 6

If we solve for a, we get:

ax + 6 = 4x - 9

ax = 4x - 15

a = 4 - 15 / x

With that arrangement we can see clearly that x can not be equal to zero, as it would give us division by zero.

the area of a figure is 36cm2. Give 3 shapes of figure. where possible give 3 possible sets of dimensions for each possible shape. answer in less than one minute pls)

Answers

Answer:

121

Step-by-step explanation:

what's the value of given expression

[tex] \sqrt{21 + 79} [/tex]

Answers

Answer:

√ 21 + 79

= 10

Find the perimeter of A ABC. If necessary, round to the nearest tenth.

Answers

Answer:

37.6

Step-by-step explanation:

A to B - just count up the numbers, it's 10

B to C - just count up the numbers, it's 12

A to C - Now this is a right triangle, so use the Pythagorean theorem(10^2 + 12^2 = 244, and take the square root of that, which is 15.62 and round to 15.6

And just add them together 10+12+15.6 to get 37.6

The value of Kensington's car decreases in value according to the exponential decay
function V
Pe-0.12t , where Vis the current value of the vehicle, t is the
number of years Kensington has owned the car and P is the purchase price of the car,
$20,000. To the nearest dollar, what will be the value of Kensington's car in 8 years?

Answers

I don’t know how to help but I can try I think it would take 800 dollars

Find the area of the shaded region. Round to the nearest hundredth when necessary.

Answers

Answer: 423.11 m^2


Step by step explanation:

Area of a circle formula pi*r^2

First solve the area of the big circle

3.14*21^2=1384.74 m^2

Now find the are of the smaller circle

r=21-3.5=17.5
3.14*(17.5)^2=961.63 m^2

Now we can minus the small area off the big area to get the shaded area.

1384.74-961.63=423.11 m^2

So the area of the shaded region is 423.11 m^2

32 is what percent of 110? (round to the nearest percent)

Answers

35.2 jsnshahahsjsjsjsjsjsjsjjsjsjsjsjjss

Calculate the geometric mean of 12 and 20

Answers

Answer:

The Geometric mean of two numbers is the square root of their product.

Given numbers are 12,20.

Geometric mean = √(12*20)

= √240.

= 15.49.

= 15.5.

The geometric mean of 12 and 20 is 4√15.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 3 + 3x + 4y = 7 is an expression.

We have,

The geometric mean of a and b is √(ab).

Now,

a = 12 and b = 20

so,

The geometric mean of 12 and 20.

= √(12 x 20)

= √240

= 4√15

Thus,

The geometric mean of 12 and 20 is 4√15.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

SOEINE HELP ME ASAPPP PLZ

Answers

Answer:

i attatched a picture of how it should look

Step-by-step explanation:

sos please help how to do this

Answers

Answer:

±√7

Step-by-step explanation:

[tex]3 {x}^{2} + 7 = 28 \\ 3 {x}^{2} = 21 \\ {x}^{2} = 7 \\ x = \sqrt{7} [/tex]

Which of the following angle measurements would you find in an equilateral triangle?
A. 45°, 45°, 45°
B. 45°, 45°, 90°
C. 50°, 50°, 50°
D. 60°, 60°, 60°

Answers

Answer:

D. 60, 60, 60

Step-by-step explanation:

In an equilateral triangle, all sides are equal and equal to 180 when added together. because 60×3 is equal to 180, D is the right answer. I hope this helps you!

The angle measurements found in an equilateral triangle are 60°, 60°, 60°

What is an Equilateral Triangle?

An equilateral triangle is an angle that has equal angles and equal sides. It implies that all the sides of the angle contain the same length.

We can also say that an equilateral triangle is also equiangular since it has equal angles. If we recall, we know that the sum of angles in a triangle is 180°.

For a triangle with equal sides, it implies that each length will possess;

= 180°/3

= 60° each.

Learn more about equilateral triangles here:

https://brainly.com/question/17264112

a trapezoid is a parallelogram always sometimes never

Answers

Answer:

never

Step-by-step explanation:

trapezoids only have one set of parallel lines. a parallelogram has to have two or more

Find the missing length. Round to the nearest tenth

Answers

Answer:

x ≈ 30.9 (Choice D)

Step-by-step explanation:

We can use cosine for solving this question:

cos (61°) = 15 / x

x = 15 / cos (61°)

x = 30.93998011

x ≈ 30.9 (Choice D)

Solve the inequality and write the solution in set-builder notation.
t-3>-8

Answers

I have no idea what set builder is, so I'll just solve it if that's okay.

t-3>-8

First, to cancel out -3, you need to add it to both sides.

t-3>-8

+3  +3

t>-5

---

hope it helps

Can someone help me pls

Answers

Answer:

Yes it is tangent because it is touching a certain point

Step-by-step explanation:

Heres a pic i found of an example and it looks exactly like that one

9514 1404 393

Answer:

  yes

Step-by-step explanation:

The side lengths of the triangle are 5, 12, and 5+8 = 13. We can check to see if they satisfy the Pythagorean theorem, which would indicate a right triangle.

  5² + 12² = 25 +144 = 169 = 13²

These sides do satisfy the relationship between sides for a right triangle, so angle A is a right angle. That is the case when segment AB is a tangent to the circle.

  Yes, AB is a tangent.

solve the inequality -d ≥ 0.5

Answers

Answer:

d ≤ -0.5

Step-by-step explanation:

Multiply each term by -1

What is the value of the expression you wrote in problem 3?

Answers

Answer:

??????????????????????????

Step-by-step explanation:

Anyone help me on this plzzzz :((

Answers

Answer:

Answer should be 47

Step-by-step explanation:

Answer:

47

Step-by-step explanation:

180-133(because of straight angle )

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