Mathematics High School

Is (-1,2) a solution to the following linear equation:
2x + y = 2

Answers

Answer 1
Plug in the values
2(-1) + 2 = 2
-2 + 2 = 2
0 = 2, false

(-1,2) is not a solution
Answer 2

Answer:

No

Step-by-step explanation:

plug in the variables into the equation

(x,y)

(-1,2)

2(-1)+2=2

2*-1=-2

-2+2=0

2 does not equal 0 so therefore no, it is not a solution

Related Questions

Is 3 a solution to 4x - 3<5?

Answers

Answer:

To solve this

4x-3<5

4x<5+3

4x<8

x<8/4

x<2

so no, three is not a solution

Step-by-step explanation:

Answer: No

Step-by-step explanation:

X = 3

Replace the variable X with 3

4 x 3 - 3 (less than or equal to) 5

4 x 3 = 12 - 3 = 9

9 is not equal to or less than 5, thus 3 is NOT a solution

1. A triangle has a base of 8km and height of 3km. What is the area of the triangle?

2. What is the area of a triangle with a base of 4 inches and a height of 9 inches?

Help would be much appreciated

Answers

Answer:

1. 12 square kilometers

2.18 square inches

Step-by-step explanation:

To find the area of a square you multiply the base and the height. Then you divide it by 2. 8 times 3 divided by 2 is 12. 4 times 9 divided by 2 is 18. Hope this helps!

HELP ILY A tree is 4 1/2 feet tall. It is expected to grow by 1 3/4
feet per year.
At this growth rate, how many years will it take for the tree to have a height greater than 40 feet? Enter the answer in the box.
years

Answers

Answer:

It will take 21 years.

Step-by-step explanation:

First, find what x would be for it to equal 40 feet. This can be done with the equation 4.5 + 1.75x = 40.

4.5 + 1.75x = 40

Subtract 4.5 from both sides. This cancels out the +4.5.

1.75x = 40 - 4.5

Subtract 4.5 from 40 to get 35.5.

1.75x = 35.5

Divide both sides by 1.75. This cancels out the *1.75.

x = 35.5/1.75

Expand 35.5/1.75 by multiply both the numerator and denominator by 100.

x = 3550/175

Reduce 3550/175 by canceling out 25.

x = 142/7 = 20 2/7

Go up by one from 20 to get the answer of 21 years.

Which expression can you simplify by combining like terms?




6d2+5cd−3dc+8

12c2−8d2c+3dc+4

7d2−3c2+6d−c

16c2+8cd+7c−8d

Answers

Answer:

[tex]6 {d}^{2} + 5cd - 3dc + 8[/tex]

Step-by-step explanation:

b/c we can substructure 5cd and 3dc b/c it doesn't matter if the place of cd and dc change. what I mean if 5 ×3=15 and it is the same with 3×5=15 both of the product are the same but, if it is - and ÷ it wil be wrong for example 5-3=2 but 3-5= -2

if is helpful ❤❤

THANK YOU

I need help solving this practice math problem ​

Answers

I think it’s D but I’m srry if u get it wrong

Evaluate the function:

f(x)=x2−4x, find f(−3)

Answers

Answer:

f(-3) = 21

Step-by-step explanation:

To solve this, you can replace all x's with -3 and then solve to find the answer.

f(x) = x^2 - 4x

f(-3) = -3^2 - 4(-3)

f(-3) = 9 - (-12)

f(-3) = 21

I hope this helps!

angle A and angle B are vertical angles. If m_A = (7x – 6) and m B = (8x – 27), then find the measure of angle b​

Answers

Answer:

A = B; 7x - 6° = 8x -27°; x = 21°. So B = 8·21° - 27° = 141°

Step-by-step explanation:

What is the y-intercept?

(0, 8)
(8, 0)
2/1
4/1

Answers

Answer:

8 and 0

Step-by-step explanation:

Matthew drove 15.5 miles in 0.25 hour. What was Matthew's average speed?

Answers

Answer: 62 mph

Step-by-step explanation: We know that Matthew drove 15 1/2 miles in 1/4 of an hour.

1. For each statement below, mark if it's TRUE or FALSE.

Answers

Answer:

1 is True 2 is False 3 is False 4 is True 5 is False

Step-by-step explanation:

Two fair dice are rolled. What is the probability of rolling:(a)double 6 (b)double 3(c) one dice 5, the other dice 6(d) a total of 10(e) a total of 3 or less

Answers

Is there a picture provided?

Please help me thanks please

Answers

Answer:

1200 cubic units

Step-by-step explanation:

If you split the shape into two parts, you can find the volume of each and solve. For the first part, you do 10x8x6 to get 480. For the second part you do 12x10x6 to get 720. Add 480+720 to get 1200.

Hope it helps!

Tell which number is greater.

1/3, 30%

Answers

Answer:

They are equal.

Step-by-step explanation:

In my opinion 1/3 is grater because three 1/3's makes a whole. 30% three times is only 90% of the whole.

plz help me out with this

Answers

Answer:

B and a great deal on a spring break and a good time to get answer for the spread of Islam in the Horn of the following elements has your examination and your

Which of the following uses the reciprocal property to rewrite x/5 = 72/4

Please help me :)

Answers

Answer:

??You texted incomplete question.

By the way, x = 90

please help me my aleks topics are due tomorrow and i will give you brainliest :(

Answers

Answer:

Step-by-step explanation:

for a) 6(9x-4)=15 x-24 by using the distributive prop,

also correct is 6*9x- 6*4

b) 7y+5y9y=21y

correct also 7y+14y

please help with this.

Answers

Answer:

I don't know how sorry àaaaaaaaaaaaaàaàaaaaaàaaà

Calculate |m| if m=21-72i. Round off answer to nearest hundred

Answers

Answer:

n6666667900087474455

For triangle FGH the measure in degrees of angles F,G, And H are 86,32, and 3x+5 respectively what is the value of x?

Answers

Answer:

The answer is 19

Step-by-step explanation:

add like terms which are 86 32 and 5 and you get 123 subtract that from 180 and get 57 divide 57 by 3 and get 19

Answer:

The answer is 19

Step-by-step explanation:

Are 5x and 5x^2 like terms? Explain your answerc​

Answers

Answer:

No.  5x and 5x² are not like terms.

When a variable is raised to two different powers, they can not be added together.

Another way to look at it is to note that:

5x + 5x² ≡ 5x(1 + x)

It is more obvious there that 1 and x are not like terms, thus neither are 5x and 5x², though they do have common factors.

Stephanie, Mike, and Howard gather blackberries for their grandmother. Stephanie picks 438 pounds, Mike picks 2.5pounds, and Howard gathers 314pounds of blackberries. If they place all the blackberries in one bowl and divide the amount equally, how many pounds will each person give to their grandmother?
A: 3 1/3 pounds
B: 3.375 pounds
C: 3 pounds
D: 3.0412 pounds

Answers

Answer:

B. 3.375 pounds

Step-by-step explanation: because its the awnser...

3х - 7= 2х + 3 help !

Answers

x=10

just add 7 to 3 and then subtract 2x from 3x and u get 1x=10
x=10 just trust me......

Convert the following repeating decimal to a fraction in simplest form.
.53

Answers

The answer is 8/15. You can break the decimal into two fractions:
0.53 = 1/2 + 1/30. Then combine by making both terms have a denominator of 30, so you get 16/30. The divide numerator and denominator each by 2 to get to 8/15

Mr. Gibson has $800 in his bank account. His brother has 100 times as much money in his bank account as Mr. Gibson has. How much money does Ms. Gibson's brither have in his bank account? *​

Answers

80,000????????????????????

y = 4x + 2
y = -2x - 4

Answers

  Answer:

x = −1

y = −2

which ordered pairs show the location of the bleachers? check all that apply.
a. (2.0, 1 1/2)
b. (1.50, 2.0)
c. (-2.0, 1.50)
d. (1.50, -2.0)
e. (1 1/2, 2)
f. (1 1/2, -2

il pick brainliest!!

Answers

it’s (b) (1.50,2.0)
hope this helped :))

A student has a container with a volume of 0.5 liter. He estimates the volume to be 0.4 liter. By what percent is the​ student's estimate​ off?

Answers

Answer:

20

Step-by-step explanation:

0.5-0.4=0.1,0.1/0.5×100= 20

The students's estimation is 80%.

What is a percentage?

A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.

Given that a student has a container with a volume of 0.5 liter.

He estimates the volume to be 0.4 liter.

Now to find the percentage of estimation,

estimated volume = correct volume × required percentage / 100

0.4 = 0.5 × required percentage / 100

Required percentage = 0.4 × 100 / 0.5

Required percentage = 0.4 × 100 / 0.5

Required percentage = 80%

Therefore, the students's estimation is 80%.

To learn more about the percentage;

https://brainly.com/question/24159063

#SPJ2

-3w-4=3+3

w=?????????

Answers

Answer:

-3.33333

Step-by-step explanation:

-3w - 4 = 3 + 3

Combine like terms

-3w - 4 = 6

Add 4 on both sides

-3w - 4 + 4 = 6 + 4

-3w = 10

Divide by -1 to isolate the variable

-3w/-3 = 10/-3

w = - 3.33333 ( the 3 keeps repeating)

Graph the equation y=2x+10

Answers

Answer: Look below this should answer your question. I think this is the right answer

is 6z-2z+4=4+2z+6z equivalent

Answers

Answer:

Step-by-step explanation:

0

Answer:

Yes

Step-by-step explanation:

Lol

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