solve by substitution
y=-2x + 3
y=2x-1​

Answers

Answer 1

Answer:

Answer is in the picture bro.

Step-by-step explanation:

Solve By Substitutiony=-2x + 3 Y=2x-1

Related Questions

If a skateboarder performs 20 tricks during practice and 45% of the tricks are heelflips, how many heelflips does the skateboarder perform?

Answers

the skateboarder would have performed 9 heel flips. .45 is 45% turned into a decimal. if you multiply .45 by the number of tricks he performed, you get 9!


3. Si multiplicamos el mismo número en ambos lados de la igualdad, la igualdad permanece.

1 Propiedad de multiplicación de la igualdad
2 Propiedad Reflexiva
3 Propiedad de la suma para la igualdad
Transitiva

Escoje^

Answers

Answer:

1

Step-by-step explanation:

Jalecia solved a linear equation. Her work is in the box.
2(3x - 3) = 18
6x - 6 = 18
6x = 24
Which property did Jalecia not use to solve the equation? *
(1 Point)
Addition Property of Equality
Distributive Property
Ο Ο Ο Ο
Division Property of Equality
Subtraction Property of Equality
12

Answers

Answer:

distributive property

Step-by-step explanation:

A or 2 in this case is used to multiple each factor within the parenthesis

then jus combine like terms and solve for x

please help me to solve these simple math

Answers

Answer:

A.−2h

B.7j

C.ah

It's real simple

Brainly please

cos (3 X +6 ) =sin 30

Answers

cos (3X+6) = 1/2
cos^-1(1/2)=60
3x+6=60
3x=60-6
3x=54
x=54/3
X=18

Aeen is drinking a beverage that has a pH of 3. 3. Marien is drinking a beverage that has a pH of 2. 7. About how many times the hydrogen ion concentration of Aeen’s drink is the hydrogen ion concentration of Marien’s drink? Round to the nearest whole number.

Answers

The number of times the hydrogen ion concentration of Aeen’s drink is the hydrogen ion concentration of Marien’s drink is 4 approx.

How to decide how many times some number is bigger?

The phrase "times bigger" shows this:

If a number 'x' is 't' times bigger than 'y', then that means:

[tex]x = t \times y[/tex]

It is because 'y' had to multiply itself with 't' to get in equal level of 'x'

How to find the hydrogen ion concentration from the pH value?

A solution with 'x' as its pH contains [tex]10^{-x} mol/L[/tex] of hydrogen ions.

For the considered case, we have:

pH of  beverage drank by Marien = 2.7,

Thus, its hydrogen ion concentration is [tex]10^{-2.7}[/tex] = x (say)

pH of beverage drank by Aeen = 3.3,

Thus, its hydrogen ion concentration is [tex]10^{-3.3}[/tex] = y (say)

Then, let x is t times bigger than y, then that means:

[tex]x = t\times y\\\\t = \dfrac{x}{y} = \dfrac{10^{-2.7}}{10^{-3.3}} = 10^{-2.7 - (-3.3)} = 10^{-0.6} \approx 4[/tex]

It is because of the property [tex]a^b \times a^c = a^{b+c}[/tex]

Thus, hydrogen ion concentration of Marien's drink is approx 4 times the hydrogen ion concentration of Aeen's drink.

Learn more about hydrogen ion concentration here:

https://brainly.com/question/3072484

A family is planting grass and a garden in the backyard. The rectangular backyard measures 131 ft by 52 ft. The garden measures 13 ft by 9 ft. What is the area of the backyard that will be grass?

Answers

Step-by-step explanation:

Find the area of the whole backyard: 131 x 52 square feet

Find the area of the garden: 13 x 9 square feet

hope this helps :)

Answer:

13 times 9=117

131 times 52=6812

Step-by-step explanation:

maths x=139 times 95847576564 find x

Helen buys 2 pineapples. She pays with a £5 note and gets £3.60 change. Work the cost of one pineapple.

Answers

2pineapples=1.40
To work that out you do 5-3.60= the cost of 2
To work 1 out you divide by 2 so
1.40 divided by 2 = 70p

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.

The cost of one pineapple is £0.7.

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: 2 + 3x + 4y = 7 is an expression.

We have,

Number of pineapples = 2

Amount given = £5

Amount returned = £3.60

The cost of the two pineapples.

= 5 - 3.60

= £1.40

The cost of one pineapple.

= 1.40/2

= 140/200

= 14/20

= £0.7

Thus,

The cost of one pineapple is £0.7.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

Helpppp ASAPS i need your help i give brainlist to the correct answer​​ only the question 2 and 3​

Answers

Answer:

1. 9

2. 25

3. No (Explanation below)

Step-by-step explanation:

1. Original PT Formula is c=√a²+b²

BUT you're looking for the leg so you now have the formula of a=c²-b² *c being the hypotenuse

a= √ 15² - 12²

a= √ 225 - 144

a= √81

a= 9

2. 16 + 9 = 25

* you're not looking for an angle therefore you are most likely looking for the length of the side. Simply add the AD and DC together to get the answer. If you were looking for an angle it'll be 180°.

3. NO because a right angle is an angle of exactly 90°, whether it be at a corner of a square/rectangle, a triangle, or where two perpendicular lines intersect. Angle ABC is an obtuse angle as it measures more than 90°

Sally, Emma and James have a total of 52 nerf toys. If James had 6 more, then he would have as many as both girls combined. Emma has three more toys than Sally. How many nerf toys do each of the three have.

(Please answer quickly it's due tomorrow morning)

Answers

Answer:

emma: 6 toys, sally: 13 toys, james: 23 toys

Step-by-step explanation:

if emma had x toys, sally would have (x-3) toys. and we know that if james had 6 more toys, he would have the same amount as both girls combined. so in this case in terms of x, james would have (x+x-3-6) toys, after simplification we get 2x-9 toys..

since we know that the three of them have 52  nerf toys as total, we can set up the equation:

x= number of toys emma has

2x-9+x+x-3=52  

         4x-12=52

               x=16

emma has 16 toys, and sally has (16-3)=13 toys. finally, james has (2*16-9)=23 toys. 16+13+23=52

Five students from the 90 students in your class not running for class
president will be selected to count the ballots for the vote for class
president. In how many ways can the 5 students be selected?
I

Answers

The answer is 7859
I did it and got it right.....

Edward is playing a game where he draws cards with integers on them from a deck of cards. If the integer is positive he moves forward that many steps, if the integer is negative he moves back that many steps. Edward drew the following cards: 3, -3, -4, 5, 10, -7.

Where does Edward end up in relation to where he started?

A) 4 steps behind where he started.
B) 4 steps in front of where he started.
C) 32 steps behind where he started.
D) 32 steps in front of where he started.

Answers

Answer:

B) 4 steps in front of where he started.

Step-by-step explanation:

Edward drew the following cards: 3, -3, -4, 5, 10, -7

He follows the steps:

3 -3 - 4 + 5 + 10 - 7 = 4

Positive 4 means 4 steps ahead

Correct option is B)

in the adjoining figure ABCD is a rhombus in which angle BAC is equal to 40 degree find angle ACB and angle abc and angle ADC and angle ACD and angle C A D​

Answers

Answer:

Step-by-step explanation:

Opposite angles of a rhombus are congruent, and adjacent angles of a rhombus are supplementary.

The radius of a circle is 9 miles. What is the circle's area?
Use 3.14 for ​.

give brainliest

Answers

Answer:

254.34 miles²

Step-by-step explanation:

How do we find the area of a circle?

The area of a circle can be found using πr², where r = radius. We have the radius as 9 miles, and pi is shortened to 3.14.

Solving

[tex]3.14*9^2[/tex] [tex]3.14*81[/tex][tex]254.34[/tex]

Therefore, the area is 254.34 miles².

Have a lovely rest of your day/night, and good luck with your assignments! ♡

Answer:

Formula for area of a circle:

πr^2,

where pi is equal to 22/7 or 3.14

and r is the radius that is being squared

Plug in the actual values to this formula to find the area;

a = πr^2

a = 3.14 x 9^2

a = 3.14 x 81

a = 254.34, your answer is 254.34 square miles.

What is the factored form of 2x3 + 4x2 – x?
2 x (x squared + 2 x + 1)
x (2 x squared + 4 x + 1)
2 x (x squared + 2 x minus 1)
x (2 x squared + 4 x minus 1)

Answers

Answer:

[tex] \bf \longrightarrow \: 2 {x}^{3} + 4 {x}^{2} + x[/tex]

Taking x common

[tex] \sf \longrightarrow \: x \bigg(2 {x}^{2} + 4x + 1 \bigg)[/tex]

Therefore,

Your answer is x ( 2x² + 4x + 1 )

Answer:

A. x (2x*2 + 4x + 1)

Step-by-step explanation:

Which of the following fractions is equivalent to 19.25?
a. 19/25
b. 77/4
c. 19/4
d. 19/8

Answers

Answer:

C. 19/4 Answer CORRECT

8. Rewrite 3 square root of 7 with exponents

Answers

Answer:

7^1/3

Step-by-step explanation:

the answer is 7 to the exponent of 1/3

15% of y is 30 what equation could be used to solve

Answers

Answer:

Y= 200

Step-by-step explanation:

Just divide 30 by 0.15

Hope that helps!

Answer: y = 30/0.15

Step-by-step explanation:

First, convert 15% to a decimal by dividing by 100 to get 0.15. The word "of" in an equation means multiply, so the equation would be y*0.15 = 30. To isolate the variable you're trying to solve for, divide both sides by 0.15. The 0.15 on the left side of the equation cancels out, leaving you with a final equation of y = 30/0.15.

Hector's service club is raising money by wrapping presents in the mall. The function f\left(x\right)=3xf(x)=3x describes the amount of money, in dollars, the club will earn for wrapping x presents. They only have enough wrapping paper to wrap 1000 presents. What does f\left(658\right)f(658)?

Answers

Given:

The function f(x) describes the amount of money, in dollars, the club will earn for wrapping x presents.

[tex]f(x)=3x[/tex]

To find:

The f(658).

Solution:

We have,

[tex]f(x)=3x[/tex]

Substitute x=658 to find the value of f(658).

[tex]f(658)=3(658)[/tex]

[tex]f(658)=1974[/tex]

It means, the club will earn $1974 for wrapping 658 presents.

Therefore, [tex]f(658)=1974[/tex].

Help, I can’t find total area. I think it’s either c or d

Answers

#2

Step-by-step explanation:

12+12+12+10+10=56

Perimeter=56 inches

Triangle Area=48

Square Area= 144

144+48=192 square inches

Hope this helps! :)

Students on the baseball team and in the French club were asked how many pets they have. The results are shown. Baseball Team: 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4 French Club: 0, 0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 6 Question What is the difference of the means of the two sets of data?

Answers

Answer:

9 I believe if I did this right

Step-by-step explanation:

0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4 (Add)

=24

0, 0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 6 (Add)

=33

33-24= 9

The difference = 9        *Sorry if I'm wrong*

simplify this expression

8x-3y+3x-2y

Answers

Hey there!

In order to simplify this expression, we need to combine like terms.

Remember, like terms are terms from the same "family". not terms that you like. :)

So, the like terms here are

8x, 3x

and

-3y and -2y

Combine them:

8x-3x-3y-2y

Hence, the answer is

[tex]\boxed{\boxed{\bold{5x-5y}}}[/tex]

Hope everything is clear.

Let me know if you have any other questions; if you do, please comment.

#LearningIsAlwaysFun

#KeepLearning

[tex]\rule{200}{2}[/tex]

Expand it please
(2/7z-3/5x)2

Answers

Answer:   [tex]\bold{\dfrac{4}{49}z^2-\dfrac{12}{35}xz+\dfrac{9}{25}x^2}[/tex]

Step-by-step explanation:

[tex]\bigg(\dfrac{2}{7}z-\dfrac{3}{5}x\bigg)\bigg(\dfrac{2}{7}z-\dfrac{3}{5}x\bigg)\\\\\\=\dfrac{2}{7}z\bigg(\dfrac{2}{7}z-\dfrac{3}{5}x\bigg)-\dfrac{3}{5}x\bigg(\dfrac{2}{7}z-\dfrac{3}{5}x\bigg)\\\\\\=\dfrac{4}{49}z^2-\dfrac{6}{35}xz-\dfrac{6}{35}xz+\dfrac{9}{25}x^2\\\\\\=\dfrac{4}{49}z^2-\dfrac{12}{35}xz+\dfrac{9}{25}x^2[/tex]

In 1925, airplane engines were cooled with water. Water freezes at a temperature of 32º Fahrenheit. Average winter low temperatures in Alaska are 50º colder than that. What is Average winter low temperature in Alaska?

Answers

Answer:

From November to March, the temperature in Alaska is between 0°F/-18°C and -30°F/-35°C, which is very cold. May and September are both often the driest and the wettest months in Alaska's summer.

I hope this helps you

:)

What is the solution to the equation log(2x + 4) = 2? Round to the nearest thousandth, if necessary.
Enter your answer in the box.

Answers

Answer:

x = 48

Step-by-step explanation:

[tex]\log_{10}(2x+4)=2[/tex]

[tex]\implies 10^{\log_{10}(2x+4)}=10^2[/tex]

[tex]\implies 2x+4=100[/tex]

[tex]\implies 2x=96[/tex]

[tex]\implies x=48[/tex]

pls help; What is the length of side X in the triangle below?

Answers

Answer: 8

Step-by-step explanation:

In a 45-45-90 triangle, the hypotenuse is sqrt(2) times longer than the leg

I am not sure how to do this −(−2−5x)+(−2)=18

Answers

(2+5x)-2=18
2+5x-2=18
5x=18

x=18/5= 3.6
- (-2 - 5x) + [(-2) +2] = 18 + 2

- (-2 - 5x) = 20

- [(-2) +2] - 5x = 20 + 2

- (-5x) = 22

5x/5 = 22/5

x = 4.4

Using the data from the theoretical probability table, what is the probability of the spinner landing only once on yellow in two spins? 0.0625 0.5625 0.375 1

Answers

The probability of the spinner landing only once on yellow in two spins is 0.375. Then the correct option is C.

What is probability?

Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1. Its basic meaning is something is likely to happen. It is the ratio of the favorable event to the total number of events.

The total sample will be

Total sample = 16 {RR, BB, YY, GG, RB, BR, RY, YR, RG, GR, BY, YB, BG, GB, YG, GY}

The probability of the spinner landing only once on yellow in two spins will be

Favorable event = 6 {YR, RY, YG, GY, YB, BY}

Then probability will be

[tex]P = \dfrac{6}{16}\\\\P = 0.375[/tex]

More about the probability link is given below.

https://brainly.com/question/795909

Answer: c is correct

Step-by-step explanation:


2. Given XYZ, if XY =YZ, and Y = 22,
find Z.

Answers

Answer:

79

Step-by-step explanation:

Sum of Triangle angles is 180

180 - 22 = 158

If the sides are the equal, the base angles are equal.

So, divide 158 by 2

79

You are the purchasing manager at a bakery. You need
to purchase flour and are considering two options.
Approximately how much do you save per pound by
choosing the less expensive option?
Option A: One 50-lb bag costs $21.24. You need to
purchase five bags, which adds $47.84 for shipping.
Option B: One 60-lb bag costs $22.89. You need to
purchase four bags, which adds $41.22.for shipping.
0 $0.04
0 $0.06
$0.10
$0.87
$1.65

Answers

Answer:

I got 0.87

If I got it wrong pls tell me the correct answer

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