Mathematics High School

Solve for x using any method!

4x – 9 = 15

a
x = 4
b
x = 1
c
x = 20
d
x=6
please hurryyyyyy

Answers

Answer 1

Answer:

d

Step-by-step explanation:

Answer 2

Answer:

D. x=6

Step-by-step explanation:

4x-9=15

Add 9 on both sides

Now the equation will be

4x=24

Divide 4 on both sides which will end up giving you

x=6

Related Questions

Which of the following is not a function?
a. (1,1),(2,2), (3,3), (4,4)
b. (2,3), (2,4), (3,3), (3,4)
c (2,4),(4,8).(10,12). (4,10)
d. (2,4), (3,4), (5,4), (6,4)​

Answers

Answer: B

Number on the left: x-value
Number on the right: y-value

If there are 2 y-values for one x-value it is NOT considered a function.

For instance in the answer:

(2,3), (2,4), (3,3), (3,4)

You can clearly see that the x-values (2 & 3) repeat more than once; therefore, it is NOT a function.

On the other hand if you have 2 DIFFERENT x-values for the same y-value it IS A FUNCTION.

For ex D: (2,4), (3,4), (5,4), (6,4)

As you can see there are 4 DIFFERENT x-values with same y-value; therefore it is A FUNCTION

To make it easier:

If x-values appear more than once = NOT A FUNCTION

If x-values appear only ONCE = FUNCTION

Remember: y-values are ALLOWED to repeat

I hope this helps. If you have any questions please let me know in the comments.

I'm so confused. Helpppp.

Answers

2 dollars, because it’s the only factor that changes and is not constant. 10 would be how much they charge for him to buy the pass, then 2 dollars per visit after.

will give brilintest if u answer correctly plz

Answers

Answer:

D. (3, 4, 5)

Step-by-step explanation:

[tex]5 = \sqrt{ {(3)}^{2} + {(4)}^{2} } \\ 5 = \sqrt{9 + 16} \\ 5 = \sqrt{25 } \\ 5 = 5[/tex]

D.3,4,5 is the correct answer

PLEASE HELP, is this graph parallel, perpendicular or neither?

Answers

Answer:

Step-by-step exp  perpendicular becaus it makes a 90 degree angle

Tell whether the expressions modeled below are equivalent. Explain how you know.
+
+
+
2(x-3)
2x-3

Answers

Answer:

they're not

Step-by-step explanation:

when you distribute the 2 into (x-3) you get 2x-6

and thats not equivalent to 2x-3  

Solve the proportion 20/3 = ?/6.

Choose the correct option.
A) 10
B) 23
C) 40
D) 120

Answers

Answer:

c.40

Step-by-step explanation:

the answer is 40 your welcome

Two people jog at the speed of 6 km/hr (Person 1) and 4 km/hr (Person 2). What is
the distance covered by each one of them when they run a total of 2 hours?

Answers

Answer:

Person 1 run a total of 12 km. Person 2 run a total of 8 km.

Step-by-step explanation:

Person 1 = 6 km/hr x 2

6 x 2= 12 km

Person 2 = 4 km/hr x 2

4 x 2= 8 km

Elsa is decorating for a wedding. She has 79 flowers and some vases. if she puts 8 flowers in each vase, how many flowers will she have left over.

Answers

Answer:

She will have 7 flowers left.

Step-by-step explanation:

I drew out clumps of 8 dots and counted them up to 79. The last clump only had 7 flowers left. Hope this helps :)

Complete the ratio. 78 chairs in 6 rows : ______ chairs in 1 row.

Answers

Answer:

13 chairs in one row

Step-by-step explanation:

i don't know how to explain bi have given you the answer already goodbye

Each of the 20 employees in an office took a 60 point test on office safety. The test scores are listed in the table below. Which histogram best represents the data in the table

Answers

Answer:

There is no table

Step-by-step explanation:

But to construct a histogram, we use frequence on the y-axis and class boundaries on the x-axis

Can someone find the slopes of these two please?

Answers

Answer:

you put the points into the slope formula and solve : (y2-y1)/(x2-x1)

1. (4 -1) / (-2 -3)

3 / -5

2. (-1 -(-2)) / (5 - 0)

(-1 +2) / 5

1/ 5

Step-by-step explanation:

i hope this helped :)

Answer:

the first slope is 3/-5

the second one is 3/5

Step-by-step explanation:

A number plus 17 is 25 algebraic expression

Answers

Answer:

x + 17 = 25

Step-by-step explanation:

x is "a number" and you just add it to 17. (Also the answer would be 8 if you need to solve it too)

The algebraic expression is x + 17 = 25 and the number is 8 if the number plus 17 is 25.

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

We have:

A number plus 17 is 25 algebraic expressions:

Let x be the number:

x + 17 = 25

After solving:

x = 25 - 17

x = 8

Thus, the algebraic expression is x + 17 = 25 and the number is 8 if the number plus 17 is 25.

Learn more about the expression here:

brainly.com/question/14083225

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Looking at the problem what’s the difference between the two highlighted please I’m Russian and don’t understand English every well

Answers

one is a coefficient ! other is normal number

Answer: Разница между ними восемь

Step-by-step explanation:

whats slope intercept form for 2x- 5y=10

Answers

Answer:

y=-2/5x-2

Step-by-step explanation:

First, you put x to the other side of the equation so you get y alone, getting the equation of -5y=-2x+10. In order to just have y on one side, you need to divide the whole equation by -5. This leads to the final answer of y=-2/5x-2.

i need help with this one

Answers

Answer:

Domain → [-5, 11]

Step-by-step explanation:

Domain of a graph or function is defined by the x-values (Input values).

From the graph attached,

Since, the graph starts from x = -5 and ends at x = 11,

(Shown as the dark points)

Therefore, domain of the graph will be represented by,

Domain → [-5, 11]

Which statement about the dilation of these triangles is true?

The scale factor is
The scale factor is 2
The scale factor is 3.
The scale factor is 4.

Answers

Answer

when 2 triangle scales are similar the ration reduces and become a scale factor

Answer:

The scale factor is 2

Step-by-step explanation:

Which is better deal and why:) help ASAP plz!?

Answers

Answer:

$36.00 is better because you get 54 apples

Step-by-step explanation:

36÷9= 4*12=48

Water forms______
when it is cold.

Answers

the answer is SNOW have a great day :)

Answer:

As a Solid

Step-by-step explanation:

Examples

river icesea icehail

What is the midpoint of the segment shown below?
10
(-1,5)
O A. (-3.3)
B. (-7,3)
. 10
10
(-6, -2)
O C. (-7, )
O D. (
-3)
10
SUBMIT

Answers

Answer: D. (-7/2,3/2)

Step-by-step explanation: (apx)

The midpoint of the segment shown below is option D. (-7/2, 3/2).

What are the Coordinates?

Coordinates are the set of points in a geometrical plane or space, which is used to denote the exact point in the coordinate plane or space.

Given a line segment with the given coordinates for the end points.

Midpoint of a segment with end points (x, y) and (x', y') is,

Midpoint = ((x + x') / 2, (y + y') / 2)

Here the end points of the segment are (-6, -2) and (-1, 5).

Midpoint of the segment = ((-6 - 1) / 2, (-2 + 5) / 2)

                                         = (-7/2, 3/2)

Hence the mid point of the segment is (-7/2, 3/2).

Learn more about Midpoint of Segments here :

https://brainly.com/question/4747771

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Which equation below does NOT represent a function?

A
y = -4

B
y = x2 + 1

C
x2 + y2 = 6

D
y = 2x + 5

Answers

Answer:

C

Step-by-step explanation:

x2+y2=9 is an example of a non function because there is at least one x value with two or more y values .

The equation below does NOT represent a function is D x² + y² = 6

What is a function?

Function is a type of relation, or rule, that maps one input to specific single output.

In mathematics, a function is an expression, rule, or law that describes the relationship between one variable (the independent variable) and another variable (the dependent variable) .

x² + y² = 9 is an example of a non function because there is at least one x value with two or more y values .

Now, y = 4

y = x - 4

y = x^2 - 4

Also, x² + y² = 6

This is not a function as there should be minimum one x value with two or more y values. this equation does not meet the criteria so this represent non-function.

Learn more about function here:

https://brainly.com/question/2253924

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19) Find the acros F(x) = x4 + 8x? -​

Answers

Answer:

F'(x)=4x3+16x

Step-by-step explanation:

What is the measure of an interior angle of a regular nonagon?

Answers

Each angle of a regular nonagon is of 140°. A nonagon in which all sides are not equal and all angles are not equal. The measure of it’s angles are different but total sum of all its interior angles is always 1260°.

-7(8) =


























Spam:$:$:$:!:!;!;!,!,!,,!!,,!,!,!,!,!,!

Answers

Answer:

-56

Step-by-step explanation:

-7 x 8= -56

Find ghe solution to the system. Write your solution as an ordered pair (x,y) with no spaces,no solution,or infinitely many.y=4x and 3x+2y=55​

Answers

Answer:

The solution of the system is (5, 20).

Step-by-step explanation:

y = 4x and 3x + 2y = 55 are simultaneous equations. To find the unknowns, we have to solve these equations simultaneously.

The first can be rewritten as

4x – y = 0.

Therefore, we have:

4x – y = 0

3x + 2y = 55

Multiplying the first equation by 2 all through, we have

8x – 2y = 0.

So we can now combine the second equation with the first multiplied by 2.

8x – 2y = 0

3x + 2y = 55

Adding these equations we have:

11x = 55

Divide both sides by 11 and we have

x = 5

Substitute x = 5 in equation 1, we have

4(5) – y = 0

y = 20.

Therefore, x = 5 and y = 20.

The solution of the system is (5, 20).

this my last question for the day

Answers

Answer:

x=72

Step-by-step explanation:

Solve for x]. The polygons in each pair are similar.

Answers

3x-21=0
21=21
3x/3 = 21/3
X= 7

Ethan is planning flowers in boxes East flower box can hold 4 Ethan wants to plan 38 red flowers and 33 white flowers in the flower boxes what is the fewest number of flower boxes he would need to plant all the flowers

Answers

Answer:

18 flower boxes

Step-by-step explanation:

Given that:

Capacity of each flower box = 4

Number of flowers to plant :

Red = 38

White = 33

Total = (38 + 33) = 71 flowers

Fewest number of flower boxes needed to plant all flowers :

Total flowers to plant / capacity of each plant

71 / 4

= 17.75

= 18 boxes

2.50+0.50=21 help meeeeeeeeeee

Answers

Answer:

You are missing some of the equation my dude

Step-by-step explanation:

The answer is 3.00 not 21

A direct variation function contains the points (–8, –6) and (12, 9). Which equation represents the function?

y = –negative StartFraction 4 Over 3 EndFraction equals StartFraction 4 Over 3 EndFractionx
y = –k equals negative StartFraction 3 Over 4 EndFraction x.x
y = k equals StartFraction 3 Over 4 EndFraction x.x
y = k equals StartFraction 4 Over 3 EndFraction x.x

Answers

Y= k equal start fractions 3 over 4 End Francisco xx

Answer:

y=-4/3x

Step-by-step explanation:

Item 10
Of 140 seventh-grade students, 15% earn the Presidential Physical Fitness Award. How many students earn the award?

Answers

Answer:

21 Students

Step-by-step explanation:

140 x .15 = 21

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