PLEASE HELP! I WILL MAKE YOU BRAINSTER.
my questions are in the photo i need numbers 1-4.

Answer:

x = 5

Step-by-step explanation:

2x-1+9x+3=57

2x+9x=57+1-3

11x=55

x= 55/11

x= 5

Answer:

x = 5

Step-by-step explanation:

Simplifying 2x + -1 + 9x + 3 = 57

Reorder the terms: -1 + 3 + 2x + 9x = 57

Combine like terms: -1 + 3 = 2 2 + 2x + 9x = 57

Combine like terms: 2x + 9x = 11x 2 + 11x = 57

Solving 2 + 11x = 57

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2' to each side of the equation. 2 + -2 + 11x = 57 + -2

Combine like terms: 2 + -2 = 0 0 + 11x = 57 + -2 11x = 57 + -2

Combine like terms: 57 + -2 = 55 11x = 55

Divide each side by '11'. x = 5

Simplifying x = 5

♡ hope it helps♡

Answer:

130°

Step-by-step explanation:

The interior and exterior angles should be supplementary, meaning they add up to 180°.

180-50=130

Hope this helps :-)

Answer:

17 is the value of x...

Step-by-step explanation:

9x + 7 = 10x-10 reason ( being alternate angle

or, x = 17

Answer:

3 = 0.25 + 0.5d

Step-by-step explanation:

Given that:

Amount charged per hour = $2

Time left before inserting $d = 15 minutes

Total time after inserting $d = 3 hours

Total time of 3 hours = time left by previous driver + hours purchased with $d

$2 = 1 hour

$d = x

2x = d

x = d/2 ; 0.5d

Since 15 minutes is left before inserting $d

15 minutes to hour ; 15/60 = 0.25

Total time of 3 hours = time left by previous driver + hours purchased with $

3 = 0.25 + 0.5d

Answer:

The answer is B and D

Step-by-step explanation:

Answer:

✔️✔️✔️✔️✔️✔️✔️✔️✔️✔️

Answer:

the 2nd one

Step-by-step explanation:

Answer:

please be more specific

Answer:

3x^3 +13x^2 - 36x + 10.

Step-by-step explanation:

Area = length * width

= (3x - 5)(x^2 + 6x - 2)

= 3x(x^2 + 6x - 2) - 5)(x^2 + 6x - 2)

= 3x^3 + 18x^2 - 6x - 5x^2 - 30x + 10

=  3x^3 + 13x^2 - 36x + 10.

Answer:

5. Rational

6. 4.27 Rational, 0.375 Rational,

0.232342345 Rational, √62 Not rational, 13/1 Rational

Step-by-step explanation:

A rational number is an integer, fraction, terminating decimal, or repeating decimal.

An irrational number  is a number that cannot be expressed as the ratio of two integers.

Hope this helps :)

Answer:

$20.58

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

         20

28     _______

         30

        - 2

         ____

          10

Answer:

B

Step-by-step explanation:

Mathematically, we shall be using the z-score here

Z-score = (x-mean)/SD

From the question, mean = 80 and SD = 4

So we want to get the option in the question that has a z-score of 1 or below

Let’s look at 75

80-75 = 5 ( this is clearly above 1 standard deviation of 4)

For 77;

80 -77 = 3

This is less than the standard deviation of 4, meaning it is within 1 standard deviation of the mean

Option B) is correct.

Step-by-step explanation:

Given :

Mean [tex](\mu)[/tex]  = 80

Standard Deviation [tex](\sigma)[/tex]  = 4

Calculation :

We have to find the score that would be 1 deviation from the mean. Which means, the interval [tex](\mu-\sigma, \mu+\sigma)[/tex]

[tex]\mu-\sigma = 80-4=76[/tex]

[tex]\mu+\sigma =80+4=84[/tex]

The interval is (76,84)

Therefore, option B) is correct.

For more information, refer the link given below

https://brainly.com/question/23907081?referrer=searchResults

Answer:

Step-by-step explanation:

Daily growth of sunflowers:

Height of sunflowers

Time required

Answer:

x=2

y=0

Step-by-step explanation:

Substitute -2x+4 for the y value in the second equation to find the value of x. x=2

Then plug 2 in for x in the first equation to find y. y=0

answer x=y-4/2  

Step-by-step explanation:

-4=2x y-4/2=x

x=2+5y

Answer:

Taras phone bill will be 70 doll hairs.

Step-by-step explanation:

100x.10=10

10+60

70

hope this helps!!!

Answer:

70 dollars

Step-by-step explanation:

0.10 times 100 is 10 dollars. 60 plus 10 equals 70 dollars a

Answer: a negative integer, rational number, and real number

Step-by-step explanation:

I don’t know exactly what you’re asking but here you go

Given parameters:

Number of sides of the regular body  = 10

      A decagon has 10 sides.

Unknown:

Sum of the measures of the interior angles = ?

Solution;

 To find the sum of the interior angles of a decagon; use the expression below:

             Sum of interior angles  =  (n - 2) x 180

where;

  n = number of sides;

So,

         Sum of interior angles  = (10 - 2) x 180 = 1440°

The sum of interior angle of a decagon is 1440°

Answer:

8

Step-by-step explanation:

The values of x are : 6.27 and -1.27

Answer:

i think its D I have stood here and looked at it for 5 minutes

Step-by-step explanation:

Answer:

7 Apples

Step-by-step explanation:

For this question, we can write expressions for Maria's apples and Luigi's apples and form an equation as they end up with the same amount.

Mario starts with 12 apples but gives away x number. This means Mario's final amount of apples can be represented as: 12-x

Similarly Luigi starts with 26 and gives away 3 times the amount of Mario. So the number he gave away can be represented as: 3x (3 times the number Mario gave away). Therefore we can represent Luigi's final number as: 26-3x

Since they both end up with the same number of apples, we can put these expressions equal to each other in an equation to solve for x (the number of apples Mario gave away):

Mario             Luigi

12-x       =      26-3x

12-x=26-3x

Now we just need to move the unknowns to one side and the other terms to the other, combine and solve:

12-x-12=26-12-3x

-x=14-3x

-x+3x=14-3x+3x

2x=14

2x/2=14/2

x=7

Mario gave away 7 apples.

Hope this helped!

Answer:

D

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

-25

Step-by-step explanation:

Answer: $5.36 per book

Answer:

$5.36 is the unit rate

Step-by-step explanation:

32.16/6=5.36

Answer:

d = 4.5

Step-by-step explanation:

d = [tex]\sqrt{\s(x2-x1)^{2} +(y2-y1)^{2}}[/tex]

d = [tex]\sqrt{(-4+6)^2+(1-5)^2}[/tex]

d = 4.5