Solve and justify your steps: 2(x+9)-4=28
Helpppp pleaseeeee I neeed to write the whole process

Answer:

x = 6 , y = -4

Step-by-step explanation:

Solve the following system:

{-9 y - 3 x = 18 | (equation 1)

3 y + 4 x = 12 | (equation 2)

Swap equation 1 with equation 2:

{4 x + 3 y = 12 | (equation 1)

-(3 x) - 9 y = 18 | (equation 2)

Add 3/4 × (equation 1) to equation 2:

{4 x + 3 y = 12 | (equation 1)

0 x - (27 y)/4 = 27 | (equation 2)

Multiply equation 2 by 4/27:

{4 x + 3 y = 12 | (equation 1)

0 x - y = 4 | (equation 2)

Multiply equation 2 by -1:

{4 x + 3 y = 12 | (equation 1)

0 x+y = -4 | (equation 2)

Subtract 3 × (equation 2) from equation 1:

{4 x+0 y = 24 | (equation 1)

0 x+y = -4 | (equation 2)

Divide equation 1 by 4:

{x+0 y = 6 | (equation 1)

0 x+y = -4 | (equation 2)

Collect results:

Answer: {x = 6 , y = -4

Answer:

= 23

Step-by-step explanation:

(5) (5) - 2 ( multiply )

= 5 * 5 = 25

( subtract ) 25 - 2 = 23

                                                  (17)

Answer:

[tex]h(-6) = -457[/tex]            

Step-by-step explanation:

Given the function

[tex]h(x)= 72 x-25[/tex]

Put [tex]h = -6[/tex] to in the function

[tex]h(x)= 72 x-25[/tex]

[tex]h\left(-6\right)=\:72\left(-6\right)-25[/tex]

           [tex]=-432-25[/tex]

           [tex]=-457[/tex]

Therefore,

[tex]h(-6) = -457[/tex]                            

                                                   (18)

Answer:

[tex]g(2)=25[/tex]            

Step-by-step explanation:

Given the function

[tex]g\left(x\right)\:=\:5x^2\:+\:4x\:-\:3[/tex]

[tex]g\left(2\right)\:=\:5\left(2\right)^2\:+\:4\left(2\right)\:-\:3[/tex]

        [tex]= 20 + 8 - 3[/tex]

        [tex]= 25[/tex]

Therefore,

[tex]g(2)=25[/tex]

Answer:

Slope Rise/Run

count from one point to another by going up or down then left or right if is down is negative if is left is negative but two negatives equal a positive

Have a nice day/night HAPPY THANKSGIVING!!!

Step-by-step explanation:

Answer:

6x+15

Step-by-step explanation:

Just do 3 times 2 so 6

Then 3 times 5 so 15

Given:

Total number of friends = 5

Total cost of all five meals = $51.94

Sales tax = 6%

To find:

The cost of one meal before tax was added.

Solution:

Let x be the cost of all five meals before tax.

Then, Amount of tax = 6% of x

According to he question,

[tex]x+\dfrac{6}{100}x=51.94[/tex]

[tex]x+0.06x=51.94[/tex]

[tex]1.06x=51.94[/tex]

Divide both sides by 51.94.

[tex]x=\dfrac{51.94}{1.06}[/tex]

[tex]x=49[/tex]

So, the cost of all five meals before tax is $49.

Divide this cost by 5 to get the cost of one meal before tax was added.

[tex]\dfrac{49}{5}=9.8[/tex]

Therefore, the cost of one meal before tax was added, is $9.8.

Answer:

3.5 hours so basically ur very smart and beautiful/handsome if asked this question and my God bless u and ur family and ur brain

Answer:6 ture    7 false         8 true                                                                                                     Step-by-step explanation:

The answers you have selected i believe are correct

Step-by-step explanation:

6) True

7) False

8) True

Answer:

2°C

Step-by-step explanation:

5 × ( - 2 ) - 4 × ( - 3 ) = - 10 + 12 = 2

The temperature on the 5th day is 2°C .

Answer:

you need to solve for x

Step-by-step explanation:

the ez way for me is by flipping it so now it is -(7-10)=x and 10 -7=3

Answer:

-7=3

Step-by-step explanation:

Hope this helps :D

Answer:

ima just say 10 and 6 my G I'm kinda dumb but u could try it

Answer:

5pt=10cups

24qt=6gal

Step-by-step explanation:

5*2=10

24/4=6

Answer: I don’t know, because strawberries are seen as good for dogs and it provides them with extra vitamin c. Maybe he/she just didn’t like it or it didn’t sit well in the stomach.

Answer: Sometimes a dog may be allergic to a certain food. Vomiting, diarrhea and skin problems may be symptoms of an allergic reaction. Consult your veterinarian if any of those occur. Introduce only one type of fruit at a time to your dog. Hope this helps... Stay safe and have a great weekend...

Plz mark me brainliest... Hope this is what you are looking for...

:D

14/2 = 7

7/2 = 3.5

3.5/2 = 1.75

1.75/2 = 0.875

9514 1404 393

Answer:

  15 meters

Step-by-step explanation:

Zeno's last jump was 2 meters, so another jump half as far adds 1 meter to the 14 m total.

After 4 jumps, Zeno would have jumped 15 meters from his starting place.

__

Comment on the question

The given distances give a total "after 3 jumps." The question asks for a total "after 4 jumps." It is not clear whether that is 4 jumps total, or 4 more jumps. In the above, we have assumed it is 4 jumps total.

Answer:

Step-by-step explanation:

Since on each day 9 shells were found, and there are 7 days: 7 x 9 = 63

Number of shells found this summer: 63

Number of shells found fewer this year than last year: 152 - 63 = 89

Hence, Jon’s family found 63 fewer shells than last year

Jon’s family found 63 fewer shells than last year if last summer, Jon’s family found 152 shells at the beach. This summer they were at the beach for 7 days.

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.

It is given that:

Last summer, Jon’s family found 152 shells at the beach. This summer they were at the beach for 7 days.

Let x be the number of shells they find this year than last year.

The value of x can be found as follows:

x = 152 - 7×9

x = 152 - 63

x = 89 shells

Thus, Jon’s family found 63 fewer shells than last year if last summer, Jon’s family found 152 shells at the beach. This summer they were at the beach for 7 days.

Learn more about the arithmetic operation here:

brainly.com/question/20595275

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Answer:

66/100 (or simplify to 33/50), 0.89

Step-by-step explanation:

Answer:

Obtuse Isosceles Triangle

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Answer:

P(X ≥ 1) = 0.50

Step-by-step explanation:

Given that:

The word "supercalifragilisticexpialidocious" has 34 letters in which 'i' appears 7 times in the word.

Then; the probability of success = 7/34 = 0.20588

Using Binomial distribution to determine the probability; we have:

[tex]P(X = x) = ^nC_x \ \beta^x \ (1 - \beta)^{n-x}[/tex]

where;

x = 0,1,2,...n    and    0  <  β   <   1

and x represents the  number of successes.

However; since the letter is drawn thrice; the probability that the letter "i" is drawn at least once can be computed as:

P(X ≥ 1) = 1 - P(X< 1)

P(X ≥ 1) = 1 - P(X =0)

[tex]P(X \ge 1) = 1 - \bigg [ {^3C__0} (0.21)^0 (1-0.21)^{3-0} \bigg][/tex]

[tex]P(X \ge 1) = 1 - \bigg [ 1 \times 1 (0.79)^{3} \bigg][/tex]

P(X ≥ 1) = 1 - 0.50

P(X ≥ 1) = 0.50

Answer:

Obtuse

Step-by-step explanation:

because 121

Answer:

2x + 5 = 3

Step-by-step explanation:

2x + 5 = x = -2 + 5

x = 3

Answer:

55

Step-by-step explanation:

the value of the expression 5y² + 4x when x = 2.5 and y = 3 will be 55.

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.

Given an expression 5y² + 4x

To calculate the value of expression at x = 2.5 and y = 3

Substitute the value of x and y in the expression:

=> 5y² + 4x

=> 5* 9 + 4 * 2.5

=> 45 + 10

=> 55

therefore, 55 is the value of the expression 5y² + 4x when x = 2.5 and y = 3.

Learn more about expression here:

https://brainly.com/question/23246712

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Answer:

Ok, I'm actually really stressed right now. My crush asked me to the mid-semester dance, but I turned down his twin to go with my friends. I know them both REALLY well, and now I don't know what to do! My besties are pressuring me to say "YES" and I really want to, but it'll break my crush's twin's heart. And again, I know them both REALLY well! STRESSFUL TIMES! :)

Answer: B.x = -22

x + 13 < 9

⇔ x < 9 - 13

⇔ x < -4

=> x ∈ {-∞; -4}

=> x = -22

Step-by-step explanation:

Answer:

Step-by-step explanation:

x + 13 < 9

x < - 4

(B). - 22

Answer:

Steak and Fish

Steak and Chicken

Fish and Chicken

Step-by-step explanation:

These are the possible choices:

Steak and Fish

Steak and Chicken

Fish and Chicken

You can double-check this by looking at each meat, and making sure it was paired with both other types of meat.

I Hope That This Helps! :)

Step-by-step explanation:

circumference=

π*d

3.14x32

=100.48

Answer:

y=-4x+1

Step-by-step explanation:

m=-4

h=1

Answer:

Step-by-step explanation:

b is the y intercept. Start with b. The graph shows that the point (0,b) is (0,1)

So far what you have is y = mx + 1

Now you have to deal with m

m = (y2 - y1)/(x2 - x1)

m = (1 - 0)/(0 - -1/2) = 1 /0.5 = 2      Use your calculator for this.

So the line is y = 2x + 1

As you move into the shaded area  y > 2x + 1

I reproduced the graph to show that pointed the arrow in the right way. You can try it to see if it works by trying a couple of points. y should work out to be greater than 2x + 1

Answer:

25.2 feets

Step-by-step explanation:

Given that:

Rectangular shaped living room has the dimension:

21 feets by 14 feets

Length of diagonal :

Using Pythagoras :

A² = B² + C²

Diagonal² = 21² + 14²

Diagonal = √(441 + 196)

Diagonal = √637

Diagonal = 25.238

Diagonal = 25.2 feets ( nearest tenth)

Answer:

26

Step-by-step explanation:

m=-4

n=3

p=12

m^2n+9p/√np

-4^2*3+9*12/√3*12

16*3+108/√36

48+108/√36

156/6

=26

Answer:

supplementary angles-either of two angles whose sum is 180°.

transformation- a change made to a shape or object

scalene triangle- a triangle with no equal sides

similar triangles-the same shape but not necessarily the same size

semi-circle- and arc measure up to 180 degrees

I hope this is good enough: