a system of equations is shown. 4x-y=5 y=-3 what is the value of x in the solution to this system

Answers

Answer 1

Answer:

x = 1 / 2 ( or ) 0.5

Step-by-step explanation:

4x - y = 5

Substitute the value of y = - 3 in the given equation,

4x - ( - 3 ) = 5

4x + 3 = 5

4x = 5 - 3

4x = 2

x = 2 / 4

x = 1 / 2 ( in terms of fraction )

                  ( or )

x = 0.5 ( in terms of decimal )

Note : -

- ( - 3 ) can be written as - 1 x ( - 3 ).

When a negative number is multiplied with another negative number, the result will be positive number.

Hence,

- ( - 3 ) = + 3


Related Questions

help me pleaseeeeeeeeee ​

Answers

Answer:

g(-2) = -1

Step-by-step explanation:

By looking at the graph, we can see that g(-2) where x = -2 is represented. Because x = -2, we can see that the y-value that correlates to this x-value is -1.

So g(-2) = -1.

Pls hurry and ty!!!!​

Answers

Answer: 64

Step-by-step explanation:

So if the length of an edge is 4, the volume is 4 x 4 x 4 = 64 Or as a formula: volume = s3 where: s is the length of any edge of the cube.

Answer:

64 feet

Step-by-step explanation:

LxHxW

4x4x4

64 feet

In this situation, simple interest is calculated yearly.

How much interest was earned?

Principal: $12,000

Time: 3 years

Interest rate: 15%

Question 6 options:

$5,400.00


$1,800.00


$17,400.00


$12,000.00

Answers

Answer:

Step-by-step explanation:

$5,400

The sum of the 2 numbers is 83. The difference of the 2 numbers is 13. What is the product of the 2 numbers?

Answers

Answer:

  1680

Step-by-step explanation:

To find the product of the two numbers, you can work out the values of the numbers, or you can work directly with the sum and difference figures.

__

Deriving the formula

We note that the square of a sum is ...

  (a +b)² = a² +2ab +b²

and the square of a difference is ...

  (a -b)² = a² -2ab +b²

The difference of these squares is ...

  (a +b)² -(a -b)² = (a² +2ab +b²) -(a² -2ab +b²) = 4ab

__

Using the formula

That is, dividing the difference of the squares of the sum and difference by 4 will give the desired product:

  P = (83² -13²)/4 = (6889 -169)/4 = 6720/4 = 1680

The product of the two numbers is 1680.

_____

Additional comment

If we factor the formula we derived, we find ...

  P = ((a +b)² -(a -b)²)/4 = ((a +b) +(a -b))/2 × ((a +b) -(a -b))/2

This simplifies to ...

  (2a)/2 × (2b)/2 = a × b

In short:

a = ((a +b) +(a -b))/2, the average of the sum and differenceb = ((a +b) -(a -b))/2, half the difference of the sum and difference

Using this fact, we find a=(83+13)/2 = 48; b=(83-13)/2 = 35, and the product is (48)(35) = 1680, as above.

fine using distributive
(7/27×9/36)+ (9/36×5/54)​

Answers

Answer:

GCF and the Distributive Property - YT here is a yt video on how to do it hope it helps i just looked up the answer

Step-by-step explanation:

answer this for 20 points

Answers

Second one.

6% is 0.06

Which equation represents the line that passes through (–6, 7) and (–3, 6)? y = –y equals negative startfraction one-third endfraction x plus 5.x 9 y = –y equals negative startfraction one-third endfraction x plus 5.x 5 y = –3x – 11y y = –3x 25

Answers

The equation represents the line that passes through (–6, 7) and (–3, 6) [tex]\rm y=\dfrac{-1}{3}x+5[/tex].

What is the slope of the equation?

For all lines in slope y-intercept form, it would be very simple to just find the answer by finding yourself the slope and y-intercept of the line in question.

The slope of the line is;

[tex]\rm m = \dfrac{y_2-y_1}{x_2-x_1}\\\\m =\dfrac{7-6}{-6-(-3)}\\\\m = \dfrac{1}{-3}[/tex]

The equation represents the line that passes through (–6, 7) and (–3, 6) is;

[tex]\rm y=\dfrac{-1}{3}x+b\\\\6=\dfrac{-1}{3}(-3)+b\\\\6=1+b\\\\b = 6-1\\\\b=5[/tex]

The required line of the equation is;

[tex]\rm y =mx+c\\\\y=\dfrac{-1}{3}x+5[/tex]

Hence, the equation represents the line that passes through (–6, 7) and (–3, 6) [tex]\rm y=\dfrac{-1}{3}x+5[/tex].

To know more about the equation of line click the link given below.

https://brainly.com/question/8955867

Answer:

I'm pretty sure the answer is B sorry if I'm wrong

Step-by-step explanation:

Need help with this!!

Answers

Answer:

∠ N = 42°

Step-by-step explanation:

the measure of a secant- secant angle is half the difference of the measures of the intercepted arcs , that is

∠ N = [tex]\frac{1}{2}[/tex] ( HE - XP ) = [tex]\frac{1}{2}[/tex] ( 122 - 38)° = [tex]\frac{1}{2}[/tex] × 84° = 42°

What is the surface area of the top portion of the barn that will need repairs, including the roof? Explain how you determined your answer.

Answers

The surface area of the roof is the amount of space on it

The surface area of the roof is 600 square meters,

How to determine the surface area?

From the complete question, we have the parameters for the roof:

The roof is a square based pyramidThe height (h) is 10 meters.The base (b) of the pyramid is 15 meters.

The surface area of the roof is calculated using:

[tex]A = b^2 + 2b \sqrt{\frac{b^2}4 + h^2}[/tex]

So, we have:

[tex]A = 15^2 + 2 * 15 \sqrt{\frac{15^2}4 + 10^2}[/tex]

Evaluate the exponents

[tex]A = 225 + 30 * \sqrt{\frac{225}4 + 100[/tex]

The equation becomes

[tex]A = 225 + 30 * 12.5[/tex]

Evaluate the sum

[tex]A = 600[/tex]

Hence, the area of the roof is 600 square meters

Read more about surface areas at:

https://brainly.com/question/6613758

Answer:

3,628 sq ft

Step-by-step explanation:

factorise fully 50x + 100

Answers

59,000 this is how you do it just out the number

The required factorized form of the given expression is 50(x+2), where 50 is the greatest common factor (GCF).

What is the Factorization?

Factorization, also known as factoring, is the breakdown of one element into a product of other objects, or factors, which when multiplied together generate the original. For example, the number 21 factors into primes as 3 × 7, and the polynomial x² − 9 factors as (x+3)(x-3).

We have been given that the expression below as

50x + 100

We have to determine the factor of the expression 50x + 100

First, we have to find the Greatest Common Factor (GCF).

GCF = 50

2 Factor out the GCF. (Write the GCF first. Then, in parentheses, divide each term by the GCF.)

50(50x/50 + 100/50)

Simplify each term in parentheses.

50(x+2)

Therefore, the required factorized form of the given expression is 50(x+2).

Learn more about the Factorization here:

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how do I work this out?

Answers

Answer:

  a. 0.41

  b. 0.22

Step-by-step explanation:

The sum of probabilities over all outcomes is 1. This fact can be used to fill the table. The other questions can be answered by reference to the table.

__

1.

The total of all probabilities is 1:

  k +0.23 +0.18 +0.26 +2k = 1

  3k = 0.33 . . . . . . . collect terms, subtract 0.67

  k = 0.11 . . . . . . . divide by 3

  2k = 0.22 . . . . find 2k

Then the table is ...

  [tex]\begin{array}{c|ccccc}n&1&2&3&4&5\\p(n)&0.11&0.23&0.18&0.26&0.22\end{array}[/tex]

a.

Landing on 2 or 3 are mutually exclusive outcomes, so the probability of one or the other is the sum of their individual probabilities:

  p(2 or 3) = 0.23 +0.18

  p(2 or 3) = 0.41

__

b.

The table tells us ...

  p(5) = 0.22

Which expression is equivalent ​

Answers

Answer:

The answer is 5 or D

Hope this helps!

True or false. A complete graph is planar

Answers

Answer:

true

Step-by-step explanation:

For questions 1-2, find each area.
1. a rectangle with sides of lengths 1/6 yard and 3/4 yard (WORTH 20 POINTS)

Answers

Answer:

the area of rectangle should be 1/8 square

Step-by-step explanation:

1/6*3/4

=1/8

don't spam!!
read the instruction first
complete answe= Brainliest answer​

Answers

Answer:

Step-by-step explanation:

3)

[tex]\sf \boxed{v_{f}^{2}=v_{i}^{2}+2gd_{y}}\\\\v_{f} - > final \ velocity\\\\v_{i} - > Initial \ velocity = 0 \\\\d_{y} - > distance \ travelled[/tex]

g -> gravitational acceleration = 9.8 m/s²

[tex]v_{f}^{2}= 0 + 2*9.8 * 45[/tex]

    = 882 m

[tex]\bold{\huge{\underline{ Answer }}}[/tex]

Answer 1 :-

Here, We have

Initial velocity = 0 , as jeepney started from rest Time = 2 seconds Distance = 20 m

Therefore,

By using second equation of motion

[tex]\sf{ S = ut {\times} }{\sf{\dfrac{1}{2}}}{\sf{at^{2}}}[/tex]

Subsitute the required values,

[tex]\sf{ 20 = 0{\times}2 {\times} }{\sf{\dfrac{1}{2}}}{\sf{{\times}a(2)^{2}}}[/tex]

[tex]\sf{ 20 = }{\sf{\dfrac{1}{2}}}{\sf{{\times}4a}}[/tex]

[tex]\sf{ 20 = 2a }[/tex]

[tex]\sf{ a = }{\dfrac{ 20}{2}}[/tex]

[tex]\sf{ a = 10\:m/s^{2}}[/tex]

Hence, The acceleration of the jeepeny is 10 m/s² .

Answer 2 :-

Here, we have

Initial velocity = 0 , as the coins started rolling from rest. Acceleration = 4 m/s²Time = 3 seconds

Therefore,

By using second equation of motion

[tex]\sf{ S = ut {\times} }{\sf{\dfrac{1}{2}}}{\sf{at^{2}}}[/tex]

Subsitute the required values,

[tex]\sf{ S = 0{\times}3 {\times} }{\sf{\dfrac{1}{2}}}{\sf{{\times}4(3)^{2}}}[/tex]

[tex]\sf{ S = }{\sf{\dfrac{1}{2}}}{\sf{{\times}4(9)}}[/tex]

[tex]\sf{ S = }{\sf{\dfrac{1}{2}}}{\sf{{\times}36}}[/tex]

[tex]\sf{ S = 18 \: m }[/tex]

Hence, The coin will reach 18 m after 3 seconds.

Answer 3 :-

Here,

A stone fell from a 45 m high cliff and hit the ground.

So,

Initial velocity = 0Distance = 45 mAcceleration due to gravity

By using third equation of motion

[tex]\sf{ v^{2} = u^{2} + 2gs }[/tex]

Subsitute the required values,

[tex]\sf{ v^{2} = 0^{2} + 2{\times}9.8{\times}45 }[/tex]

[tex]\sf{ v^{2} = 90{\times}9.8}[/tex]

[tex]\sf{ v^{2} = 882 m}[/tex]

[tex]\sf{ v = \sqrt{882} m}[/tex]

[tex]\sf{ v = 29.7 m/s}[/tex]

Hence, The final velocity of the stone when the stone hits the ground is 29.7 m.

Use the Distributive Property to find the product.
3 over 4 × 2 1/3

Answers

Answer:

The distributive property states that you can "distribute" the contents of one parentheses into the other to find an answer.

Let's first break down the larger number in the second parentheses:

400 + 10 + 5.

Then, let's multiply all those numbers by 3.

400 x 3 = 1200. 10 x 3 = 30. 5 x 3 = 15.

Then add up all the numbers and you get 1245.

Answer:

1245

Step-by-step explanation:

400+10+5

400×3=1200. 10×3=30. 5×3=15

2, 5, 25/2

,...
Find the 9th term.

Answers

Step-by-step explanation:

seems to be multiplication, because the differences between the numbers change.

so, let's find the factor.

2 × f = 5

f = 5/2

5 × f = 5 × 5/2 = 25/2

ok, the factor 5/2 is confirmed.

a1 = 2

a2 = a1 × 5/2 = 2 × 5/2 = 10/2 = 5

a3 = a2 × 5/2 = a1 × 5/2 × 5/2 = 2 × 5/2 × 5/2 = 25/2

an = an-1 × 5/2 = a1 × (5/2)^(n-1) = 2 × (5/2)^(n-1)

a9 = 2 × (5/2)⁸ = 2 × 390,625/256 =

= 390,625/128 = 3,051.7578125

The geometric sequence's 9th term will be 3,051.7578.

What is a geometric sequence?

A geometric sequence is one in which each term is obtained by multiplying the previous term by the same number throughout the series.

Let a₁ represent the first term and r represent the common ratio. The geometric sequence's nth term is then given as,

aₙ = a₁ x (r)ⁿ⁻¹

The sequence is given below.

2, 5, [tex]\dfrac{25}{2}[/tex],

The first term is 2. And the common difference is given as,

[tex]r = \dfrac{5}{2}[/tex]

r = 2.5

Then the 9th term is given as,

a₉ = 2 x  (2.5)⁹⁻¹

a₉ = 2 x (2.5)⁸

a₉ = 2 x 1525.8789

a₉ = 3,051.7578

The 9th term of the geometric sequence will be 3,051.7578.

Learn more about the geometric sequence here;

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A. 100 degrees

B. 130 degrees

C. 65 degrees

D. 70 degrees

Answers

C. 65

wild guess I hope you get it right!

Please help
I will give a maybe brainly 3-5 stars and a thanks

Answers

It would be 4v they’re both factors of 20 as well.

Let's simplify this equation:

    ⇒ first, consider what we can simply typically

A variable is a letter whose value is unknown in an algebraic expression.The coefficient is a numerical value used together with a variable.A constant is a term that has a definite value.Like terms are variables with the same letter and power. Like terms can sometimes contain different coefficients.

By considering the equation given

 ⇒ we can simply simplify the coefficient of the variable with the

  denominator

   [tex]\frac{20v}{5} =\frac{5*4*v}{5} =\frac{5}{5}*4*v =1*4*v=4v[/tex]

Thus the simplified expression is 4v

Answer: 4v

Hope that helps!

A fish can swim up to 40 miles per hour. What is this speed in feet
(1 mile = 5,280 feet)
per hour?

Answers

Answer:

one mile is 5280 feet

40 x 5280 = 211,200 feet per hour

pretty sure im right

Worth 33 points!
What is the solution to the system of equations shown in the graph?
(1, -3)
(0, 2)
(-2, 0)
(-3, 1)​

Answers

Answer:

(-3,1)

Step-by-step explanation:

As their are two lines so these are simultaneous linear equations

The solution is the point or coordinate at which they intersect with each other

Hence this is (-3,1)

Answer:(-3, 1)    Step-by-step explanation:

Note: The solution of a graph is the intersection of 2 lines.

Plotting the solution on the graph:

To plot the solution on the graph,

Look for the intersection point of the two lines. Make a dot on the graph to represent the solution.

Identifying a solution on the graph:

To identify the solution, you willl need to determine it's coordinates.

     1. Determine the x and y coordinate by drawing a line going                                 downwards and rightwards. Keep in mind that the                                               intersection of the lines on the x and y axis are the x and y                               coordinates repectively.

(It is suggested that the line should be drawn with a ruler).

    2. The x and y coordinate obtained should be put in (x,y) form.

Determining the solution on the graph:

⇒ Intersection point: (x, y) = (x = -3; y = 1) = (-3, 1)                [Refer to image]

here it is : Forty of Laurens 50 answers were correct .What percent of Laurens answers were correct.

Answers

Answer:

80%

Step-by-step explanation:

using equivalent fractions:

40/50 = 80/100 = 80%

also since 50 is half of 100 (in other words 100%), you can just multiply 40 by 2 to get a number out of 100 which is your percentage

hope this helped :)

Sal and Zack built a scale model of the Texas Capitol using a scale in which 2 inches represents 8 feet. The height of the Texas Capitol is 312 feet.
Problem

What is the height of the scale model in inches?

Answers

Fractions are rations of two integers. The height of the scale model in inches is 78 inches

Ratio and proportions

Fractions are ratios of two integers and they are also used to represent ratios.

Given that scale model of the Texas Capitol is  2 inches to represents 8 feet, the height of the capitol in inches is the heght in feet is 312 feet is expressed as:

Height  = 312 * 2/8
Height in inches = 312/4
Height in inches = 78 inches

Hence the height of the scale model in inches is 78 inches

Learn more on proportion here: https://brainly.com/question/19994681

SOLVE.

1/2 (X-3/4) = 5/12

Answers

[tex]~~~~~\dfrac 12 \left(x-\dfrac 34 \right) = \dfrac 5{12}\\\\\\\implies \dfrac{4x-3}4= \dfrac{5 \times 2}{12}\\\\\\\implies 4x-3 = \dfrac{5 \times 2 \times 4}{12}\\\\\\\implies 4x -3=\dfrac{40}{12}\\\\\\\implies 4x -3 = \dfrac{10}3\\\\\\\implies 4x = \dfrac{10}3 +3\\\\\\\implies 4x = \dfrac{19}3\\\\\\\implies x = \dfrac{19}3 \times \dfrac 1 4\\\\\\\implies x = \dfrac{19}{12}[/tex]

Help please i don't want to get held back

Answers

height of mt.= 4000meters

hope it helps...!!!

Find the least number 1008 would need to be multiplied by to give a square number :)

Answers

Answer:

7

Step-by-step explanation:

1008 Must be multiplied by 7 to get a a perfect square.

Write an equation to determine the unknown side. Then solve the equation. Simplify your answer. Round to the nearest tenth, if necessary.

Show your work.

A right triangle is shown. The hypotenuse is labeled 12, one leg is labeled 4, and the other leg is labeled x.

Answers

Use the Pythagorean theorem, x=11.3

A bag contains 4 red marbles, 3 blue marbles, and 5 green marbles. One marble is
removed from the bag.
What is the probability that it is NOT red?

Answers

Answer:

2/3

Step-by-step explanation:

Add all the number of marbles which is 12. 8 of them are not red. 8/12 when simplified equals 2/3.

pls help me
Find the value of x. ​

Answers

Answer:

80°

Step-by-step explanation:

2x+20=180°

2x= 180°-20°

x=160/2

x=80°

Since it’s a right angle we know it’s 90 degrees
Also we would do 2x + 20 = 90
2x = 70
X = 35
Pls give brainliest

Is km ∥ jn? why or why not? no, because startfraction 16 over 10 endfraction not-equals startfraction 24 over 15 endfraction. yes, because startfraction 10 over 24 endfraction equals startfraction 15 over 16 endfraction. yes, because startfraction 16 over 10 endfraction equals startfraction 15 over 24 endfraction yes, because startfraction 16 over 10 endfraction equals startfraction 24 over 15 endfraction.

Answers

The answer is  Yes because StartFraction 16 Over 10 EndFraction equals StartFraction 24 Over 15 EndFraction is correct.

From the diagram we have

Corresponding segments in triangles LKM and LJN are proportional, so the triangles are similar and KM ║ JN.

What is the meaning of a parallel line?

The parallel line does not intersect each other

The other yes choice does not properly show corresponding segments

So, actually makes a false claim.

It is not true that 16/10 = 15/24.

To learn more about the fraction visit:

https://brainly.com/question/78672

Answer: Yes,  16/10 equals 24/15

Step-by-step explanation: bc im cool like that

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