how many solutions does 12 + 2x - x = 9x + 6 have?? giving brain and max points

Answer:

Step-by-step explanation:

1 ) + 9 = 13

+ 9 ≠ 13

False

2 ) 3 = 12

3 ≠ 12

False

3 ) + 5 − 9 = 0

-4 ≠ 0

False

4 ) 2 + 5 = 17

7 ≠ 17

False

5 ) 5 − 3 = 17

2 ≠ 17

False

6 ) − 3 = 1

− 3 ≠ 1

False

7 ) 7x = 35

  a ) Divide both sides by 7...

    [tex]\frac{7x}{7} = \frac{7}{35}[/tex]

     [tex]x = 5[/tex]

8 ) [tex]\frac{4x}{4}=\ 4[/tex]

      a ) Multiply both sides by 4...

        [tex]\frac{4x}{4}=\ 4[/tex]

        [tex]\frac{4x}{4}[/tex] × [tex](4)=(4)[/tex] × [tex](4)[/tex]

        [tex]4x=16[/tex]

       b ) Divide both sides by 4...

        [tex]\frac{4x}{4}= \frac{16}{4}[/tex]

         [tex]x=4[/tex]

9 ) 3 + 4 = 15

7 ≠ 15

False

10 ) 8 + − 5 = 7

3 ≠ 7

False

Hope this helps! :)

She bought 13 books in $58.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

Let b represent the number of books.

So, the equation will be

5b - 7 = 58

Now, add 7 to both sides of the equation

5b = 65.

b = 13.

Thus, she bought 13 books at 5 dollars a piece.

After she gets a 7 dollar discount off of 65 dollars, so she paid a total of 58 dollars after the discount.

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If 8 cows can graze a field in 28 days as a result, 14 cows take 12 days to graze the same field.

It is defined as the relationship between two variables when the first variable increases, the second variable also increases according to the constant factor.

It is given that, 8 cows can graze a field in 28 days.

Suppose x is the number of days required to graze the same field.

A proportionality relationship is one that has an inverse proportion. When two quantities are inversely related when one quantity rises, the other falls. The number of hours needed to construct a wall serves as an illustration of inverse proportion. By the inverse proportional relationship,

6:x :: 14:28

x=(28×6) / 14

x=2 × 6

x=12 days

Thus, if 8 cows can graze a field in 28 days as a result, 14 cows take 12 days to graze the same field.

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Answer:

Step-by-step explanation:

33 percent of her diet is the protein

Answer: -64 and 64

Step-by-step explanation:

Using system of equations to solve the problem, the coffee shop made use of a total of 91 pounds of blend A coffee for that month.

A system of equations is a collection of two or more equations with a same set of unknowns. In solving a system of equations, we try to find values for each of the unknowns that will satisfy every equation in the system.

The equations in the system can be linear or non-linear.

In mathematics, a system of linear equations (or linear system) is a collection of one or more linear equations involving the same variables.

Let;

5.60x + 4.20y = 637... eq(i)

x = 3y ... eq(ii)

Solving equation (i) and (ii)

x = 91, y = 91/3

The Coffee shop used 91 pounds of blend A

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Answer: 290

Step-by-step explanation:

58 x 5 = 290

Margo jumps 290 times in five minutes

Answer:

The slope is -3/5=-0.6

Step-by-step explanation:

Slope: (5-8)/(8-3)= -3/5=-0.6

Answer:

[tex]m=-\frac{3}{5}[/tex]

Step-by-step explanation:

Step 1: Slope

Step 2: Set up equation and solve for m

Answer: 7. 0 cause there is  not a number next to the 3

-2 is the slope you distribute the -2 by the parenthese

Step-by-step explanation:

92% = 69 questions

100% = 75 questions

The total number of questions on the test is 75 questions.

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

We have,

Total number of answers answered correctly = 69

The percentage of the test questions answered correctly = 92%

This means,

92% = 69

The total number of questions in percentage = 100%

Now,

92% = 69

Multiplying 100/92 on both sides.

100% = 100/92 x 69

100% = 75

Thus,

The total number of questions on the test is 75 questions.

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The solution to the given system of linear equations is x = -2 and y = -8. That is, (-2, -8).

From the question, we are to determine the solution to the given system of linear equations.

The given system of linear equations is

y = 5x + 2         ---------- (1)

4x - y = 0          ---------- (2)

Substitute equation (1) into equation (2)

4x - y = 0

4x - (5x + 2) = 0

4x - 5x -2 = 0

-x -2 = 0

-2 = x

x = -2

Substitute the value of x into equation (1)

y = 5x+ 2

y = 5(-2) + 2

y = -10 + 2

y = -8

Hence, the solution is x = -2 and y = -8

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Answer:   700x+1700

This represents the total amount spent over the x weeks that have gone by.

===========================================

Explanation:

x = number of weeks

700x = amount spent over those x weeks ($700 per week)

700x+1700 = total amount spent when adding on the $1700 tv.

------

An example:

Let's say x = 10 weeks have elapsed. He spends $700 a week, so 700x = 700*10 = 7000 dollars have been spent so far if we ignore the tv. Then add on the $1700 tv cost to get 7000+1700 = 8700 dollars total spent.

Then note how 700x+1700 = 700*10+1700 = 8700 matches what we got earlier.

I recommend trying out other values of x to get a better idea of what's going on.

The number of red candies in the bag is 100 when the ratio of red candies to the other colors of the candies is 2:5 and the bag has 350 candies in it.

The dividend or number being divided is referred to as the antecedent, and the divisor or number that is dividing is referred to as the consequent.

A ratio compares two numbers by division. A survey of 20 respondents revealed that 13 of them preferred cake to ice cream and 7 preferred ice cream to cake.

It is given that bag of candies has several colored candies. Further, the ratio of red candies to the other colors is 2:5.

Total number of candies in the bag = 350

Number of red candies = [tex]\frac{2}{7}[/tex] × 350 = 2×50 = 100

Number of other colored candies = 350 - 100 = 250

Hence, the number of red candies in the bag is 100.

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Answer:

solving for v or your variable

v= -6

Step-by-step explanation:

getting:

v = -6

The point- slope of equation is y- 8 = -1/2 ( x+ 3).

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the

change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx

where, m is the slope

Given:

line that passes through point (-3, 8)

and, line is y= -1/2 x + 6

From above equation the slope of line is -1/2

Now, the point slope form of line

y- [tex]y_1[/tex] = m (x- [tex]x_1[/tex])

y- 8 = -1/2 ( x - (-3))

y- 8 = -1/2 ( x+ 3)

Hence, the point- slope of equation is y- 8 = -1/2 ( x+ 3).

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The expression is -10 > 2x+ 14.

A mathematical operation such as subtraction, addition, multiplication, or division is used to combine terms into an expression. In a mathematical expression, the following terms are used:

Given:

Negative ten is no less than two times a number plus 14

let the number x

so, two times a number plus 14

= 2x+ 14

and, Negative ten is no less than two times a number plus 14

-10 > 2x+ 14

hence, the expression is -10 > 2x+ 14.

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if the area of a rectangle is 80 square units, the perimeter must be lesser than or equal to 35. 9 units.

What is a conjecture?

A conjecture is a conclusion or a proposition that is made tentatively and without supporting evidence.

The conjecture for the given question is:

if the area of a rectangle is 80 square units, the perimeter must be lesser than or equal to 35. 9 units.

Greater than → Lesser than or equal to

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Answer:

The answer is C 5.735

Step-by-step explanation:

I hope this helps!

The y-intercept is y = 10, and that is the initial height of the flower in inches.

And the rate of change between n = 1 and n = 5 is:

R = 0.21

For any function y = f(x), the y-intercept is the value that y takes when we evaluate in x = 0.

In this case, we have the exponential function:

g(n) = 10*(1.02)^n

Evaluating in n = 0 we get:

g(0) = 10*(1.02)^0 = 10*1 = 10

The y-intercept is y = 10, and it means that the initial height of the flower is 10 inches.

Now we want to get the average rate of change on the interval [1, 5].

Remember that for a function f(x) the average rate of change on an interval [a, b] is:

R= [ f(b) - f(a)]/(b - a)

In this case we will have:

R = [ g(5) - g(1)]/(5 - 1) = [g(5) - g(1)]/4

Where:

g(5) = 10*(1.02)^5  =11.041

g(1) = 10*(1.02) = 10.200

Replacing that:

R = [11.041 - 10.200]/4 = 0.21

This means that the plant increases about 0.21 inches per day on these 4 days.

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Answer:

-5.2,-4.75,-9/2

Step-by-step explanation:

Answer:-5.2 -4.75 -9/2

Step-by-step explanation:

Answer:

a) 0.566 b)8.62

Step-by-step explanation:

0.56565656...

4th number after decimal is 6, which is greater than 5. the value of 3rd number after dp goes up by 1

therefore 0.566

7×12%=0.84

7+0.84=7.84

7.84×10%=0.784

7.84+0.784=8.62

Answer:

10

Step-by-step explanation:

Answer: The Answer Would be H because in the 20 darts there are 10 odd numbers 1,3,5,7,9,11,13,15,17,19

Step-by-step explanation: :)

Answer:

5+5=10

Step-by-step explanation:

For breakfast, you have had 1/2 a serving of cereal and 1/4 cup of raisins, which count as one serving of fruit.

For breakfast, you have had one serving of cereal and one serving of fruit. In general, one serving of cereal is considered to be one cup, while one serving of fruit is considered to be one half cup. Therefore, in your bowl of oatmeal, you would have had two servings of cereal, and in your quarter cup of raisins, you would have had one serving of fruit. For lunch, you have had one serving of fruit in your glass of orange juice.

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The required value of the variable x is - 4

A variable in mathematics is an alphabet or phrase that stands in for an unknowable amount, unknowable value, or unknowable number. Particularly in the case of algebraic expressions or algebra, the variables are utilised. As an illustration, the linear equation x+9=4 has the variables x and 9 as constants.

The given equation is :

10-6x + 9x = x+2

On solving this equation we get :

10 + 3x = x + 2

Subtract - 3x on both sides and we will get

10 = - 2 x + 2

Subtract 2 on both sides

we get

8 = -2x

On dividing both sides of the equation by 2 we get

x = - 4

Thus the required value of the variable x is - 4

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The amount of gallons of oil that are in the gun when it is full is 6 gallons , the correct option is (c) .

In the question ,

it is given that

A lube gun dispenses the same amount of oil each time , and

the equation is y = (-0.03125)x + 6

where , x is the number of times the oil is dispensed and

y is the number of gallons of oil remaining in the gun ,

when the gun is full , the number of times oil dispensed will be zero .

that is x = 0  ,

Substituting x = 0 in the given equation ,

we get ,

y = (-0.03125)(0) + 6

y = 0 + 6

y = 6

Therefore , The amount of gallons of oil that are in the gun when it is full is 6 gallons .

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The statement 'If an integer is negative, its absolute value is also its additive inverse.' is True.

In this question, we have been given a statement 'If an integer is negative, its absolute value is also its additive inverse.'

We know that for any non zero real number 'm', the additive inverse is '-m'

as m + (-m) = 0

We know that the absolute value of any non-zero real number is always positive.

Consider a negative integer -p.

The absolute value of -p is |-p| = p

We can observe that -p + p = 0

-p + |-p| = 0

Therefore, the statement 'If an integer is negative, its absolute value is also its additive inverse.' is True.

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The option that must be true of triangle RST include:

m∠R > 90°

m∠S + m∠T < 90°

m∠R > m∠T

m∠R > m∠S

From the information illustrated in the triangle, R > S + T. It should be noted that based on the information, one angle is more than the sum of the other two angles.

Sum of angles in a triangle = 180°

If an angle is 90°, the sum of the other two angles will be 90°.

Therefore, if R = 120°, it so greater than 90°. The correct options are illustrated above.

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Answer:

A, B, D and E
see picture

Step-by-step explanation: