Help!!!What is the value of x?

Answer:

E

Step-by-step explanation:

Equation [tex]y=x^{2} +7x-11[/tex] has two real solutions.

Here are the coefficients:  a=1,b=7,c=11

The discriminating party is: [tex]7^{2}[/tex] -4(1)(-11)=93

Positive, so there are two viable options.

According to the discriminant:

[tex]y=-3x^{2} +x+12[/tex] has two real solutions.

[tex]y=2x^{2} -6x+5[/tex] has zero real solutions.

[tex]y=x^{2} +7x-11[/tex] has two real solutions.

[tex]y=-x^{2} -8x-16[/tex] has one real solution.

Quadratic functions occupy a special place in the academic curriculum. They are small improvements over linear functions and offer a major break from attachment to straight lines because their values may be readily derived from input values.

The discriminant informs you of the number of quadratic equation solutions or x intercepts for a parabola.

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The slope of a line is defined as the ratio of the difference between the y-coordinate and x-coordinate of the two points m= y₂-y₁/x₂-x₁

We have total spending = $15

So the equation of the budget line will be

PсQс+ PрQр = 15

Where, Pс and Qс is the price of unit candy and quantity of candy respectively. Pр and Qр is the price of unit peanuts and quantity of peanuts respectively.

Part A:Goods A B C D E F Candy Bars 0 4 8 12 16 20Bag of peanuts 10 8 6 4 2 0

Part B :Graph of Budget line

Budget line The slope of a budget is -2 i.e ratio of the prices.

Opportunity costs remain constant as each additional unit of the product is purchased.

The opportunity cost of one more candy bar is 0.5 bags of peanuts.

The opportunity costs of one more bag of peanuts are 2 candy bars.

Part C: No, it tells only what is possible.

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Answer:

x = -7

Step-by-step explanation:

Solve for x:

5 - 4 x + 3 (3 x + 5) = -15

3 (3 x + 5) = 9 x + 15:

(9 x + 15) - 4 x + 5 = -15

Grouping like terms, 9 x - 4 x + 5 + 15 = (-4 x + 9 x) + (5 + 15):

((-4 x + 9 x) + (5 + 15)) = -15

9 x - 4 x = 5 x:

5 x + (5 + 15) = -15

5 + 15 = 20:

5 x + 20 = -15

Subtract 20 from both sides:

5 x + (20 - 20) = -20 - 15

20 - 20 = 0:

5 x = -20 - 15

-20 - 15 = -35:

5 x = -35

Divide both sides of 5 x = -35 by 5:

(5 x)/5 = (-35)/5

5/5 = 1:

x = (-35)/5

The gcd of -35 and 5 is 5, so (-35)/5 = (5 (-7))/(5×1) = 5/5×-7 = -7:

Answer: x = -7

Answer:

x = -7

--------------------------

Hope this helps!

Have a great day and God bless! :)

Answer:

Step-by-step explanation:

Not Sure

Area of PNQ + Area of LPQ = Area of LQM

Area of LQM = 8cm² + 16cm²

Area of LQM = 24cm²

Out of mixture of 3 pounds with cost $3.36 per pound ,pounds each kind of nuts used by Marina are almonds 2.1 and walnuts 0.9 pounds.

As given,

Cost per pound

Almonds=$3.00

Walnuts=$4.20

Total mixture=3 pounds

Cost of mixture=$ 3.36 per pound

Let x amount of almonds and y walnuts Marina use

According to condition,

x +y=3                           __(1)

3x +4.20y =3 ×3.36     __(2)

Multiply 3 to (1) and subtract from (2)

3x +4.20y=10.08

3x +3y= 9

      1.2y=1.08

⇒y=0.9

Substitute y=0.9 in (1),

x=2.1

Therefore, pounds of each kind of nuts used by Marina are almonds 2.1 and walnuts 0.9 pounds.

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Answer:

35 dollars

Step-by-step explanation:

thats the answer

Answer:

3x+15

Multiply the single term 33 by each term of the polynomial (x+5)

3x+15

The value of a is 3.

The value of b is -14.

What is Coordinates?

A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.

Given that;

The function of the graph is,

y = 2x² + ax + b

The graph intersects the x-axis at the points (-7/2, 0) and (2, 0).

Now,

Since, The graph intersects the x-axis at the points (-7/2, 0) and (2, 0).

Hence, The points must satisfy the graph of the function.

So, Points (-7/2, 0) and (2, 0) are satisfy the function y = 2x² + ax + b.

When point (-7/2, 0) satisfy the function y = 2x² + ax + b

Then,

0 = 2 × (-7/2)² + a × (-7/2) + b

0 = 49/2 - 7a/2 + b

7a/2 - b = 49/2 .... (i)

And, When point (2, 0) satisfy the function y = 2x² + ax + b

Then,

0 = 2 × (2)² + a×2 + b

2a + b = -8    .... (ii)

Add equation (i) and (ii) we get;

7a/2 - b + 2a - b = 49/2 + (-8)

11a/2 = 33/2

11a = 33

a = 3

And, 2a + b = -8

2 × 3 + b = -8

b = -8 - 6

b = -14

Hence, The value of a is 3.

The value of b is -14.

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The unknown number will be 31, if -16 is added to it and the sum is doubled, the result is 1 less than the number.

Let the unkown number be x.

Now according to the given question.

If -16 is added to the unknown number and the sum is doubled, the result is 1 less than the number.

⇒  (x + (-16))2 = x - 1

⇒ 2x - 32 = x - 1

⇒ 2x - x = -1 + 32

⇒ x = 31

Hence, the unknown number will be 31, if if -16 is added to it and the sum is doubled, the result is 1 less than the number.

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f

(

4

x

2

−

5

)

=

12

x

2

−

20

Step-by-step explanation:

Using the subtraction between two amounts, it is found that:

The difference between the longest and shortest measurement is of 33 cm.

The measurements are given as follows:

To find the difference between difference between the longest and shortest measurement, we have to subtracted the longest measurement by the shortest measures.

From the measurements given, we have that:

Hence, the subtraction is given as follows:

41 cm - 8 cm = 33 cm.

The difference between the longest and shortest measurement is of 33 cm.

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Answer:

1/4

Step-by-step explanation:

If the system has infinitely many solutions, then

     [tex]\sf \boxed{\bf \dfrac{a_1}{b_1}= \dfrac{a_2}{b_2}= \dfrac{c_1}{c_2}}[/tex]

    ax + by = 12  ⇒ a₁ = a  ; b₁ = b ; c₁ = 12

    2x + 8y =60  ⇒ a₂ = 2  ; b₂ = 8 ; c₂ = 60

[tex]\sf \dfrac{a}{2}= \dfrac{b}{8}= \dfrac{12}{60}\\\\\\ \dfrac{a}{2}= \dfrac{12}{60}\\\\a = \dfrac{12}{60}*2\\\\a = \dfrac{2}{5}[/tex]

                         [tex]\sf \dfrac{b}{8}= \dfrac{12}{60}\\\\ b = \dfrac{12}{60}*8\\\\b = \dfrac{8}{5}\\[/tex]

[tex]\sf \dfrac{a}{b}= \dfrac{ \dfrac{2}{5}}{ \dfrac{8}{5}}\\\\[/tex]

    [tex]\sf = \dfrac{2}{5}* \dfrac{5}{8}\\\\ = \dfrac{1}{4}[/tex]

The coordinate of point B from the given coordinates is (6, -9)

The formula for calculating the midpoint of coordinates is expressed according to the formula:

M(x, y) = {(x₁+x₂)/2, (y₁+y₂)/2}

Given the coordinate points M (2, -2) and A (-2, 1)

Substitute

2 = (x₁+x₂)/2

2 = -2+x₂/2

4 = -2 + x₂

x₂ = 6

Similarly;

Substitute

-2 = (1+y₂)/2

-4 = 1+x₂/2

-8 = 1 + y₂

y₂ = -9

Hence the coordinate of point B from the given coordinates is (6, -9)

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Answer:(6,-5)

Step-by-step explanation:deta math

The correct answer for the following question is [tex]672.227[/tex]

As per the question statement, we have to find a number that has 7 in tens and thousandths places, 2 in the hundredths, tenths and ones places and 6 in the hundreds place.

Before solving this question, we need to know about decimal place values and its operations.

Solving as per given statements,

7 in tens place, [tex]7*10=70[/tex]

7 in thousandths place, [tex]7*\frac{1}{1000} =0.007[/tex]

2 in hundredths place, [tex]2*\frac{1}{100} =0.02[/tex]

2 in tenths place, [tex]2*\frac{1}{10} =0.2[/tex]

2 in ones place, [tex]2*1=2[/tex]

6 in hundreds place, [tex]6*100=600[/tex]

Adding the above values and we will get 672.227

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Answer:

1. 2p(2 + r + 3z)

2. x(a + b + c)

Step-by-step explanation:

1. The greatest common factor is 2p.

4p+2pr+6pz = 2p(2 + r + 3z)

2. The greatest common factor is x.

ax + bx + cx = x(a + b + c)

Using translation concepts, the point that lies on the new graph is given by: (-1, -4).

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction either in it’s definition or in it’s domain. Examples are shift left/right or bottom/up, vertical or horizontal stretching or compression, and reflections over the x-axis or the y-axis.

The equivalent translation to an horizontal shrink by a factor of a a function f(x) is given by:

f(ax).

Hence, in this problem, for the horizontal shrink by a factor of 4, the function will be given by:

g(x) = f(4x) = 4x.

Then when x = -1, the output is given by:

g(-1) = 4(-1) = -4.

The point that lies on the new graph is given by: (-1, -4).

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We use the slope equation to solve for the slope/gradient of a line:

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

We're given:

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

Plug in the given information:

[tex]-\dfrac{1}{6}=\dfrac{-6-y}{4-(-2)}\\\\-\dfrac{1}{6}=\dfrac{-6-y}{4+2}\\\\-\dfrac{1}{6}=\dfrac{-6-y}{6}[/tex]

Cross multiply (by multiplying the numerators by the opposite denominators):

[tex]-\dfrac{1}{6}=\dfrac{-6-y}{6}\\\\-1\times 6=6(-6-y)\\-6=-36-6y\\30=-6y\\y=-5[/tex]

y = -5

The length of the diagonal of the TV is 50 inches

Given that the TV is 30 inches tall and 40 inches wide.

So length of the TV, l = 30 inches

and Width of the TV = 40 inches

The angle between the length and width of the TV is right angle. So we can use Pythagoras Law here.

That is, square of the hypotenuse is equal to the sum of the squares of the base and altitude of the right triangle.

i.e., If 'd' is the diagonal of the TV, then,

    [tex]d^2 = l^2 +b^2 = 30^2+40^2 = 2500[/tex]

This implies that  [tex]d=\sqrt{2500}=50[/tex] inches.

So the diagonal of the TV is 50 inches long.

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Answer:

50 inches

Step-by-step explanation:

Hope this helps

The rule of arithmetic progression is -15, -9, - 3, 3, 9, 15.

So, to find the rule:

Therefore, the rule is -15, -9, - 3, 3, 9, 15.

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Answer:

No solution.

Step-by-step explanation:

Simplify the equation.

2(x + 5) + 5 = 6x - 4(-5 + x)           {Use distributive property}

2*x + 2*5 + 5 = 6x - 4*(-5) + (-4) * x

2x + 10 + 5    = 6x + 20 - 4x      

  2x + 10 + 5 = 6x - 4x + 20  {Combine like terms}

        2x + 15 = 2x  + 20

                This equation has no solution.

Answer:

Step-by-step explanation:

49000/ 10 = 4900

Answer:

y=x=70

hope this helps

Step-by-step explanation:

In parallelogram the adjacent angles are supplementary

∠TBE+y=180

110+y=180

y=70

Also, opposite angles of a parallelogram are equal.

z=∠TSE=110

y=x=70

The algebraic expression of the statement is 2n - 7 = 9

The mathematical statement is given as;

The Difference of twice a number(n) and 7 is 9

Twice a number n means 2n

So, we have

The Difference of 2n and 7 is 9

Difference means minus

So, we have

2n - 7 = 9

Hence, the algebraic expression of the statement is 2n - 7 = 9

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The smallest integer is 4.

Let the numbers be x, x+1 and.x + 2.

Therefore, the expression will be:

x + x + 1 + x + 2 = x(x + 2) - 9

3x + 3 = x² + 2x - 9

Collect like terms

x² + 2x - 9 - 3x - 3

x² - x - 12 = 0

x² -4x + 3x - 12

x(x - 4) + 3(x - 4)

x - 4 = 0

x = 0 + 4 = 4

The smallest number is 4.

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The expression is simplified to -33/4

Fractions are simply defined as the part of a whole set.

There are different types of fractions, which includes;

Given the expression;

15/4+(-4/1/3)

To simply the expression, we need to take the following steps;

First, we need to expand the bracket, we have;

15/ 4 - 4/ 1/ 3

Now, take the inverse of the divisor and multiply

15/ 4 - 4 × 3/ 1

15/ 4 - 12

Find the lowest common multiple

15 -  48/4

-33/4

Thus, the expression is simplified to -33/4

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Answer:

28y - 4z

Step-by-step explanation:

Hey there!

In order to simplify this, we need to first distribute the numbers outside of the parentheses to the numbers inside the parentheses:

20y + 8z + 8z - 20z + 8y

Now we combine like terms:

28y - 4z