Mathematics High School

PLEASE HELP. WILL GIVE BRAINLIEST AND WORTH 60 POINTS.

Solve each equation using substitution. Answers are on the right and questions are on the left.

PLEASE HELP. WILL GIVE BRAINLIEST AND WORTH 60 POINTS. Solve Each Equation Using Substitution. Answers

Answers

Answer 1

Answer:

Q1. No solutionQ2. (5, 6)Q3. Infinitely many solutionsQ4. No solutionQ5. (2, 3)

Step-by-step explanation:

Q1.

y = -1/3x - 1x + 3y = -12

Solution

x + 3(-1/3x - 1) = -12x - x - 3 = -12-3 = -12

No solution

Q2

y = 2x - 4y = x + 1

Solution

2x - 4 = x + 1x = 5y = 6

(5, 6)

Q3

y = -3x + 36x + 2y = 6

Solution

6x + 2(-3x + 3) = 66x - 6x + 6 = 66 = 6

Infinitely many solutions

Q4

- 5x + y = 1- 10x + 2y = -2 ⇒ -5x + y = -1

Solution

1 = -1

No solution

Q5

y = 1/2x + 2y = x + 1

Solution

1/2x + 2 = x + 11/2x = 1x = 2y = 3

(2, 3)

Related Questions

Hayley's birthday party will cost $27 if she invites 3 guests. How many guests
can there be, at most, if Hayley can afford to spend a total of $36 on her
birthday party? Assume the relationship is directly proportional.

Answers

Answer:

imma say 12 guests

Step-by-step explanation:

sorry if wrong

−14.4=−0.6p

I’m bisexual

Answers

That’s coolllllllllllllll

nice :) good for u, wish i could just say that straight up lol

HAAAAAAALLLLLLLP

7th Grade IXL

Answers

Answer: This is middle school math?! Man I feel bad for you...

First one: ZZXY

Middle one: ZYXZ

Last one: ZXZY

Answer:

mark the other guy brainliest I answer so he can get it

Step-by-step explanation:

Question 3(Multiple Choice Worth 1 points)
(05.04 MC)

The data to represent average test scores for a class of 16 students includes an outlier value of 78. If the outlier is included, then the mean is 84. Which statement is always true about the new data when the outlier is removed?

The mean would decrease.
The mean would increase.
The median would decrease.
The median would increase.

Answers

Answer:

The mean would increase

Step-by-step explanation:

The mean would increase

78 is lower than the mean so if you take out a value that's lower than the mean it would obviously increase

A fish is 12 Meters below the surface of the ocean. what is it's evelation ​

Answers

A fish is 12 Meters below the surface of the ocean. What is the elevation it is -12

answer these questions if ur smart

Answers

So find the diameter which is the radius times 2
So 3x2= 6
6x 3.14(Pi)
=18.84 which a full circle and now divide by two
9.42 is the area of semi circle

Answer:ayyyy more free points

Step-by-step explanation: so i can ask questions

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Translate the sentence into an equation The sum of 5 times a number and 7 is 3
Use the variable b for the unknown number


HELPPPPPP

Answers

Answer:

Equation: 5b + 7 = 3

Step-by-step explanation:

Unknown number = b

5 times of number = 5b

Sum of 5b and 7 = 5b + 7

Equation;

5b + 7 = 3

Simplify the expression: 5-−3ℎ −(6-+7ℎ)
a) 11-−4ℎ
b) 11-−10ℎ
c) −-−4ℎ
d) −-−10ℎ

Answers

Answer:

D

Step-by-step explanation:

What is the perimeter, in terms of x, of the triangle shown here?
(7x2 - 12)
(-5x + 30)
(3x2 + 4x)

Answers

Answer:

The perimeter of triangle is: [tex]\mathbf{10x^2-x+18}[/tex]

Step-by-step explanation:

We need to find perimeter, in terms of x, of the triangle shown here.

The length of side 1: [tex](7x^2 - 12)[/tex]

The length of side 2: [tex](-5x + 30)[/tex]

The length of side 3: [tex](3x^2 + 4x)[/tex]

The formula used to find perimeter of triangle is: [tex]Perimeter\: of\: triangle=Sum\:of\:length\:of\:all\:sides[/tex]

Putting values and finding perimeter:

[tex]Perimeter\: of\: triangle=Sum\:of\:length\:of\:all\:sides\\Perimeter\: of\: triangle=(7x^2 - 12)+(-5x + 30)+(3x^2 + 4x)\\Perimeter\: of\: triangle= 7x^2-12-5x+30+3x^2+4x\\Perimeter\: of\: triangle=7x^2+3x^2-5x+4x-12+30\\Perimeter\: of\: triangle=10x^2-x+18[/tex]

So, The perimeter of triangle is: [tex]\mathbf{10x^2-x+18}[/tex]

Pls help I need help
Hehhehrhrh

Answers

Answer:

C) 11.4

Step-by-step explanation:

Given m ||n, find the value of x.
(7X+9)
(9x+5)°

Answers

Answer:

         x = 2

Step-by-step explanation:

(7x + 9)° is corresponding angle to (9x + 5)° angle

Therefore:

m║n      ⇒      (7x + 9)° = (9x + 5)°

(7x)° + 9° = (9x)° + 5°     {subtract (7x)° from both sides}

9° = (2x)° + 5°                    {subtract 5° from both sides}

4° = (2x)°                           {divide both sides by 2°}

 x = 2

what is the answer for y=__x+__

Answers

Answer:

y=1/-4x+4

Step-by-step explanation:

hey

Step-by-step explanation:

Slope (x) is rise/run. From one intersecting point to the next, we find it is moving 4 y down and 1 x over. Using this we conclude the slope is -4/1x (or -4x)

The second number in the system is b, or y-intercept. The line intercepts at 4y. If we combine these together, the outcome is y = -4x + 4

It costs $3.50 for ¾ pound of chicken. How much does it cost for 1 pound of chicken?

Answers

Answer:

£4.38

Step-by-step explanation:

You need to find 1/4 and then add it on

Find the area of the parallelogram.

Answers

Answer:

12

Step-by-step explanation:

12 is the area

Since,

6×2=12

write the expanded notation of:
7.3
13.407
21.0005
0.000103
9.725 plzzz

Answers

Answer:

e

Step-by-step explanation:

e im not sure

an = -15 + 5(n – 1)
Find the 21st term of the sequence.

Answers

Answer:

[tex]a21 = - 15 + 5(21 - 1) \\ = - 15 + 105 - 5 \\ = 85[/tex]

85 the 21st term of the sequence.

What is Arithmetic progression?

An arithmetic progression or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.

here, we have,

an = -15 + 5(n – 1)

so,

a_21= -15+(21-1)5

      =-15+100

      =85

Hence, 85 the 21st term of the sequence.

To lean more on Arithmetic progression click:

brainly.com/question/28898589

#SPJ5

Select the fraction that is equivalent to one half.

HOW DO I DO THIS PLZ HELP

Answers

Answer:

1/2 one half

Step-by-step explanation:

Answer:

Multiply both the numerator and the denominator by the same whole number.

For example;

If you multiply 1/2 by 2/2, this will equal 2/4. You can simplify 2/4 to 1/2.

So to find 1/2 to be equivalent to another fraction, multiply both the numerator and the denominator by the same number to find a fraction that equals 1/2.

Find the area of the shape below. All measurements are in miles.
6
8
1
15.23
1
1

Answers

731.04!! You multiply all together!! Mark me brainliest ?



11. What is the perimeter of the top of a square pizza box that just manages to hold a circular pizza whose radius is 70 cm?

Answers

Multiply the radius by 2 to get the diameter: 70cm x 2 = 140cm. Then, to find the perimeter of the pizza box, multiply the radius by 4 since there are 4 sides in a square pizza box: 140cm x 4 = 560cm. Hope this helps!

2x−7=−19 x =
x/-3+5=12 x =
3/4x −5=4 x =

Answers

i believe it’s x=3 i’m sorry if i wrong

Jim buys a skateboard for $200. The value of the skateboard depreciates by 15% each year
since buying it. Create a function to represent the value of the skateboard, f(2), in dollars,
after 3 years since buying it.

Answers

Answer: f(x)=200•(0.85)^x

Step-by-step explanation:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

Depreciation is often modeled as an exponential decay function. Since Jim bought a skateboard for Co=$200, its value will depreciate by r=15% = 0.15 each year since buying it.

Order the following set of numbers in ascending order (least to greatest): 2.007; 2.714; 2.09; 2.741; 2.07

Answers

Answer:

2.007;2.07;2.09;2.714;2.741

Step-by-step explanation:

2.007 is the least and 2.741 is the greatest

Answer: 2.007, 2.07, 2.09, 2.714, 2.741

Step-by-step explanation:

Please help me with this one ☝️

Answers

Answer:

D

Step-by-step explanation:

add them together

A farmer bought 36 ducks and 52 pigeons. Approximately how many birds did the farmer buy?​

Answers

the answer is 88, because when you add 52+36 it is equal to 88. <3

estimate 70 divided 30

Answers

Answer:

1.4 estimate: 1

Step-by-step explanation:

Translate quadrilateral ABCD 5 units to the right and 6 units down.



What are the coordinates of the vertices of the image?
Please help and give an answer with in depth information. +15 points

Answers

Answer:

D. A'(1,-7), B'(2,-1), C'8,-2) and D'(7,-5)

Step-by-step explanation:

Probably too late, but I took the quiz

Answer:

D

Step-by-step explanation:

Keep it simple, but correct :)

Which of these is the standard form of the following function?
f(x) = -9(x + 5)2 + 4



f(x) = 9x2 − 90x − 221


f(x) = -9x2 − 90x − 221


f(x) = 9x2 − 180x + 221


f(x) = -9x2 − 180x − 221

Answers

I’m pretty sure the answer would be B

Answer:

the answer is B) -9x2 -90x -221

The Smiths spend 5% of their budget on entertainment. Their total budget this year is $2,000 more than last year, and this year they plan to spend $2,300 on entertainment. What was their total budget last year?

Their total budget last year was

Answers

Answer:

$44,000 is the total budget

The slope of the line below is -3. Use the coordinates of the labeled point to
find a point-slope equation of the line.

Answers

Answer: y+7= 3(x-5) C

Step-by-step explanation:

Line segment AB has endpoints A(2, -3) and B(-4, 6). What are the coordinates of the midpoint of AB?

Answers

(-1,1.5) because you add both ys and both xs then divide by two to find the middle
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