I need help with this problem on the math test, It's due TONIGHT! Plz help me with my math

Answer:

I think Its x=0

just did it on edg lol hope

The value of x in the expression is,

⇒ x = 0

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

We have to given that;

The expression is,

⇒ 2 (x - 3) + 9 = 3 (x + 1) + x

Now, We can simplify the expression as;

⇒ 2 (x - 3) + 9 = 3 (x + 1) + x

⇒ 2x - 6 + 9 = 3x + 3 + x

⇒ 2x + 3 = 4x + 3

⇒ 4x - 2x = 3 - 3

⇒ 2x = 0

⇒ x = 0

Thus, The value of x in the expression is,

⇒ x = 0

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Answer:

Step-by-step explanation:

-3x + 4y = -20

y = x - 4

Put the second equation into the first equation in place of y.

-3x + 4 (x - 4) = -20

Multiply everything in the parenthesis by 4.

-3x + 4x - 16 = -20

Combine like terms.

x - 16 = -20

Add 16 to both sides.

x = -4

Put this into the second equation in place of x.

y = -4 - 4

y = -8

Your solution set is (-4,-8).

Hope this helps!

Answer:

(-4,8)

Step-by-step explanation:

Answer:

the answer to your question is (1,-2)

Answer: y=2x-1

This is the answer

Step-by-step explanation:

I fix the answer

3x-24=81

3x=81+24

3x=105

divide both sides by 3

therefore, the answer is 35

Answer:

B

Step-by-step explanation:

if you divide 105 by 3 it is equivalent to 35

Answer:

16

Step-by-step explanation:

3 and 8 can both go into 16

Answer:

12.5%

Step-by-step explanation:

2.56-2.24 =0.32

By using the rule of three we can find the answer.

we have that 2.56 = 100% so we have to find what percentage 0.32 represents

(0.32*100)/2.56 = 12.5

Answer:

12.5%

Step-by-step explanation:

Answer:

for question 7 : I think it is no

Step-by-step explanation:

if you plot the points on a quick rough sketch you will find that none of the coordinates are on the same line (which they would have to be for a straight line). No points in those 3 coordinates are the same so the there cannot be two points on the same x or y coordiante therefore there is no right-angles triangle.

If you plot the points roughly there will not be two perpendicular lines so there is no right-angles triangle.

sorry I realise   this is confusing :(

Also for Question 5:

Parallel should be anything y= for example, y=6

Perpendicular should be anything x= for example x=6 as y=7 is a horizontal line and x=6 is a vertical line. Y=6 would be parallel because y=(any number with no gradient e.g. 1,2,3,4,etc.) is horizontal.

Complete question :

Ned is riding his bike from his house to the park, both of which are on the same straight road. On his way, he stops at a store, which is 4/7 of the way to the park, and then bikes the remaining 0.6 mile to the park. What is the distance between Ned's home and the park?

Answer:

1.4 miles

Step-by-step explanation:

Given that :

Ned's home and park are on the same straight road :

Store where Ned stopped is 4/7 of the way to the park

Bikes the remaining 0.6 miles to the park

Hence after traveling 4/7 of the distance, distance to park is 0.6 miles

Hence, 1 - 4/7 = 3/7

Hence, 3/7 of the way = 0.6 miles

If 3/7 = 0.6 miles

Then, 1 = x

Cross multiply

3/7 x = 0.6

3x = 4.2

x = 4.2 / 3

x = 1.4 miles

The distance from Ned's home to park is 1.4 miles

The distance between Ned's home and the park is 1.4 miles.

Ned is riding his bike from his house to the park, both of which are on the same straight road.

At some point between the way to the park, he covered [tex]\dfrac{4}{7}[/tex] of total distance and the destiny is still remained by 0.6 mile.

The fraction of the distance yet to be covered is,

[tex]\begin{aligned}\rm{Remaining\;distance}&=1-\dfrac{4}{7}\\&=\dfrac{7-4}{7}\\&=\dfrac{3}{7} \end{aligned}[/tex]

Now, the remaining distance is given that is 0.6 mile.

Therefore,

[tex]\begin{aligned}\dfrac{3}{7} \times \rm{Total \;distance}&=0.6\\\rm{Total \;distance}&=1.4\;\rm{miles} \end{aligned}[/tex]

Thus, the distance between Ned's home and the park is 1.4 miles.

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Answer:

Domain: {0, 2, 5}

Range: {0, 2, 5}

The relation is not a function since the 0 appears more than once as an x-coordinate.

Step-by-step explanation:

The domain is the set of the x-coordinates.

The range is the set of the y-coordinates.

If any value appears more than once as an x-coordinate, it is not a function.

Domain: {0, 2, 5}

Range: {0, 2, 5}

The relation is not a function since the 0 appears more than once as an x-coordinate.

Answer:

20 minutes

Step-by-step explanation:

Given

[tex]Pavilion: 4\ minutes[/tex]

[tex]Green\ House: 10\ minutes[/tex]

Required

Determine the time they both arrive together

To do this, we simply determine the common multiple of both numbers:

Start by listing the multiples of 4;

[tex]4: 4,8,12,16,20,24,28......[/tex]

Next, list the multiples of 10

[tex]10: 10, 20, 30,40, 50......[/tex]

Their common multiple is: 20

Hence, they'll both arrive at 20 minutes

20 minutes Answer:

Step-by-step explanation:

Edgy

The solution to the equation 6 - x = 5x + 30 is x = -4.

We have,

To solve the equation 6 - x = 5x + 30, we can start by bringing all the variables to one side and the constants to the other side of the equation. Here's the step-by-step solution:

Start with the equation: 6 - x = 5x + 30.

To eliminate the variable terms on the right side, subtract 5x from both sides of the equation:

(6 - x) - 5x = 5x + 30 - 5x.

Simplifying the left side gives: 6 - x - 5x = 30.

Combining like terms on the left side yields: 6 - 6x = 30.

Now, isolate the term with the variable.

Move the constant term (6) to the right side by subtracting it from both sides of the equation:

6 - 6x - 6 = 30 - 6.

Simplifying both sides gives: -6x = 24.

To solve for x, divide both sides of the equation by -6:

(-6x) / -6 = 24 / -6.

Simplifying gives: x = -4.

Therefore,

The solution to the equation 6 - x = 5x + 30 is x = -4.

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Question:

Sal is trying to determine which cell phone and service plan to buy for his mother. The first phone costs $100 and $55 per month for unlimited usage. The second phone costs $150 and $51 per month for unlimited usage.

The inequality that will determine the number of months, x, that are required for the second phone to be less expensive is .

The solution to the inequality is .

Sal’s mother would have to keep the second cell phone plan for at least months in order for it to be less expensive.

Answer:

a. [tex]150 + 51x < 100 + 55x[/tex]

b. [tex]x > 12.5[/tex]

c. At least 13 months

Step-by-step explanation:

Given

First Phone;

[tex]Cost = \$100[/tex]

[tex]Additional = \$55[/tex] (monthly)

Second Phone;

[tex]Cost = \$150[/tex]

[tex]Additional = \$51[/tex] (monthly)

Solving (a): The inequality

Represent the number of months with x

The first phone is expressed as:

[tex]100 + 55x[/tex]

The second phone is expressed as:

[tex]150 + 51x[/tex]

For the second to be less expensive that the first, the inequality is:

[tex]150 + 51x < 100 + 55x[/tex]

Solving (b): Inequality Solution

[tex]150 + 51x < 100 + 55x[/tex]

Collect Like Terms

[tex]51x-55x<100 - 150[/tex]

[tex]-4x<-50[/tex]

Solve for x

[tex]x > -50/-4[/tex]

[tex]x > 12.5[/tex]

Solving (c): Interpret the solution in (b)

[tex]x > 12.5[/tex] implies 13, 14, 15....

Hence, She'll keep the second phone for a period of at least 13 months

Answer:

I'm terrible at explaining so here's a screenshot

- Ripper

Step-by-step explanation:

Answer:

Step-by-step explanation:

slope is 3/4.

I'm pretty sure, cuz it's rise/run

1 and 5/42

Step-by-step explanation:

Answer:

i need help my self keep trying

Step-by-step explanation:

Answer:

I believe answer choice A

Step-by-step explanation:

Answer:

I thin that the answer is A

Step-by-step explanation:

Answer:

Its important to ask your teacher this alot  of tests are different.  But just study the general idea of what you've learned so far.  

step-by-step explanation:

Answer:

perdón por no ayudar

Step-by-step explanation:

mucho texto

Answer:

17 blocks

Step-by-step explanation:

17 blocks because if you draw it on a number line they are opposite sides of the number line so you would do 7+10 which is 17.

Answer:

No

Step-by-step explanation:

Answer:

61°

Step-by-step explanation:

It is the same value because m//n.

Answer:

[tex]\Delta=-124[/tex]

Step-by-step explanation:

The discriminant for a quadratic in standard form is given by the formula:

[tex]\Delta=b^2-4ac[/tex]

We have the equation:

[tex]7x^2-4x+5=0[/tex]

Hence, a=7; b=-4; and c=5.

Therefore, our discriminant will be:

[tex]\Delta=(-4)^2-4(7)(5)[/tex]

Evaluate. Hence, our discriminant is:

[tex]\Delta=16-140=-124[/tex]

Notes:

Since our discriminant is negative, this tells us that the quadratic has no real roots.

Answer:

-124

Step-by-step explanation:

The discriminant is given by

b^2 -4ac  where ax^2 + bx+c =0

7x^2-4x+5=0​  so a = 7 b = -4 and c = 5

( -4) ^2 - 4(7) ( 5)

16 - 140

-124

Answer:

Step-by-step explanation:

3.4 times 2 is 6.8

pemdas for the second one. 2 times 6 is 12. 33+10-12, 31

102/22

4.3636

Answer:

1: 6.8

Work: 3.4 divided by 2 equals 6.8

2: 246

Work: 33 plus 10 minus 2 times 6 equals 246

3: 4

Work: 102 divided by 22 equals 4

Step-by-step explanation: I hope this helps! :)

Answer:

Step-by-step explanation:

-23=-3X-8

Answer:

no it makes an acute angle

Step-by-step explanation:

9+13+16=38

to be a right triangle they need to equal 90

Answer: 130 shark cookies.

Step-by-step explanation: If you divided 170 clown fidh cookies by 85 clown fish cookies you get 2. So same as 85 times 2. Then do the same with the shark cookies. 65 times 2, that equals 130.