3x+7y=37 and x=3 then y= In

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{ - 8 {x}^{2} + 10x - 3}}}}}[/tex]

Option B is correct.

Step-by-step explanation:

[tex] \sf{(4x - 3)( - 2x + 1)}[/tex]

Use the distributive property to multiply each term of the first binomial by each term of the second binomial

[tex] \dashrightarrow{ \sf{4x( - 2x + 1) - 3( - 2x + 1)}}[/tex]

[tex] \dashrightarrow{ \sf{ - 8 {x}^{2} + 4x + 6x - 3}}[/tex]

Add like terms: 4x and 6x

[tex] \dashrightarrow{ \sf{ - 8 {x}^{2} + 10x - 3}}[/tex]

Hope I helped!

Best regards! :D

Answer:

Four and twenty nine thousandths

Step-by-step explanation:

Answer:

$96 is the original price of  book

Step-by-step explanation:

keep the unknown value as X

(19.2/X)*100 = 20%

19.2/X = 0.2

19.2/0.2 = X

X = 96

The original price of the book is $24.

When there is a sales, the price of items become cheaper. Items become less expensive when there is a sale.

When there is a 20% reduction in the price of the book, the book becomes 80% (100 - 20%) cheaper. In order to determine the original price of the book, divide the sales price by 80%

Original price = $19.20 / 80%

= $19.20 / 0.8

= $24

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Glad I can help you!!

Answer:

Definition: The associative property states that you can add or multiply regardless of how the numbers are grouped. By 'grouped' we mean 'how you use parenthesis'. In other words, if you are adding or multiplying it does not matter where you put the parenthesis.

The word "commutative" comes from "commute" or "move around", so the Commutative Property is the one that refers to moving stuff around. For addition, the rule is "a + b = b + a"; in numbers, this means 2 + 3 = 3 + 2. For multiplication, the rule is "ab = ba"; in numbers, this means 2×3 = 3×2.

If satisfied please leave a review and feel free to give me brainiest.

Answer:

B. The y- axis

Step-by-step explanation:

If you look at a 4 quadrant graph you can see the line of the reflection

Answer:

c

Step-by-step explanation:

i go to norcross high school btw . smh ;)

The value of exterior angle is 100

If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the two interior opposite angles.

Given:

angle 1 = 30

angle 2 = 7x

exterior angle= 10x

Now using exterior angle property

10x= 7x+30

3x= 30

x=10

Hence, the exterior angle is 10x= 100 degree

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Answer:

Simon used 50 blocks

Ron used 60 blocks

Together, they used 110 blocks.

Here is the question as an equation-

(5x10)+(6x10)=

Answer:

Coordinates of B is (3,-4)

Step-by-step explanation:[tex]\frac{-7+x^{2} }{2}=-2[/tex]

[tex]\frac{2+y^{2} }{2} =-1[/tex]

You multiply -2 by 2 to get -4 and then create the equation [tex]-7+x^{2} = -4[/tex] then you substitue -7 for +7 and add +7 to -4 which gives you 3 (x coordinate of B)

You multiply -1 by 2 to get -2 and then create the equation[tex]2+y^{2} =-2[/tex] then you subtract 2 by -2 which gives you -4 (y coordinate of B)

To check your answer use the midpoint formula [tex]( \frac{x^{1} +x^{2}}{2} ) ( \frac{y^{1} +y^{2}}{2} )=M[/tex]

[tex]\frac{-7+3}{2} =\frac{-4}{2} =-2\\\frac{2+ -4}{2} =\frac{-2}{2} =-1[/tex]   which will give you the midpoint (-2,-1)

The required coordinate of the endpoint B is given as (3, -4).

A midpoint is a point on the line whose distance from both ends of the line is equal.

Here,
midpoints between any two points are given as,
x = x₁ + x₂ / 2    ; y = y₁ + y₂

since, the midpoint of AB is M(-2, -1). If the coordinates of A are (-7, 2),

So we have (x , y) = (-2, -1) and A(x₁, y₁) = (-7, 2), and to determine B(x₂, y₂)

Now.
x = x₁ + x₂ / 2    ; y = y₁ + y₂/2

-2 = -7 + x₂ /2  ; -1 = 2 + y₂ /2
x₂ = 3               ; -4

Thus, the required coordinate of the endpoint B is given as (3, -4).

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Answer:

Yes, she did not reverse the inequality sign when the last step was to multiply or divide by a negative number,

Step-by-step explanation:

Yes, Amanda make a mistake.

An error analysis on Amanda's work is in the last step, which is;

-1x ≤ -12 ⇒ x ≤ 12

The other student says that;

-1x ≤ -12 ⇒ x ≥ 12

Here,

Amanda was asked by her math teacher to solve an inequality on the board.

Amanda put the following on the board:

3x - 2(x - 1) ≤ 2x - 10

3x - 2x + 2 ≤ 2x - 10

1x ≤ 2x - 12

-1x ≤ -12

x ≤ 12

We have to find Amanda mistake to solve the inequality.

What is Inequality?

An inequality is a relationship between two expressions or values that are not equal to each other.

Now,

Amanda was asked by her math teacher to solve an inequality on the board.

Amanda put the following on the board:

3x - 2(x - 1) ≤ 2x - 10

3x - 2x + 2 ≤ 2x - 10

1x ≤ 2x - 12

-1x ≤ -12

x ≤ 12

Clearly, on last step Amanda make mistake to solve.

The correct solution is;

3x - 2(x - 1) ≤ 2x - 10

3x - 2x + 2 ≤ 2x - 10

1x ≤ 2x - 12

-1x ≤ -12

x ≥ 12

Hence,  Amanda make a mistake.

An error analysis on Amanda's work is in the last step, which is;

-1x ≤ -12 ⇒ x ≤ 12

The other student says that the correct solution in last step is;

-1x ≤ -12 ⇒ x ≥ 12

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Answer:

83,040

Step-by-step explanation:

I multiplied the original number by ten

Answer: g(h(2))=8

Step-by-step explanation:

To find g(h(2)), you first need to solve h(2). After you find that value, you plug that value into g(x).

h(2)=2(2)-1                        [multiply]

h(2)=4-1                             [subtract]

h(2)=3

Now that we know h(2)=3, we plug 3 into g(x).

g(3)=3+5                            [add]

g(3)=8

After we have plugged in h(2) into g(x), we got g(h(2))=8.

Answer:

12.5 is to the nearest tenth

12.54 is to the nearest hundredth

Step-by-step explanation:

12.537

The first number after the decimal is the tenths place

we look at the number after it to determine whether to round up or down

12.53  the 3 is less than 5 so we leave it alone

13.5 is rounded to the nearest tenth

The second number after the decimal is the hundrdeths place

we look at the number after it to determine whether to round up or down

12.537  the 7 is greather than or equal to 5 so we round up

13.537  is rounded becomes 13.54

Answer:

-19.8

Step-by-step explanation:

-9 * 2.2

Forget about the - for now.

Multiply 2.2 by 9

The answer is 19.8

So the when the signs are different the answer is always a negative number after multiplying.

So the answer automatically becomes -19.8

HOPE IT HELPED

Answer:

The y-intercept would be 4

Step-by-step explanation:

Answer:

[tex]x = A cos\theta[/tex]

Step-by-step explanation:

Given

Resultant Vector = A

Required

Determine the x component of vector A

To answer this question, I'll make use of the attachment

In the attachment, the relationship between A and the x component is as follows (using Pythagoras theorem):

[tex]cos\theta = \frac{x}{A}[/tex]

Multiply both sides by A

[tex]A * cos\theta = \frac{x}{A} * A[/tex]

[tex]A * cos\theta = x[/tex]

[tex]A cos\theta = x[/tex]

Reorder the equation

[tex]x = A cos\theta[/tex]

Hence, the x component of A is: [tex]Acos\theta[/tex]

Answer:

question unclear

Step-by-step explanation:

Answer:

multiply the population of town with the growth rate to find answer

Step-by-step explanation:

Plz mark brainliest

Exact Form: 5/2

Decimal Form: 2.5

Mixed Number Form: 2 1/2

Answer:

2.5 or 5/2 or 2 1/2

Step-by-step explanation:

Answer:

a) FKR and F'KR form supplementary angles

b) FK = F'K

   EF = E'F'

(They are reflected by mirror)

Answer:

2261.46

Step-by-step explanation:

51142% = 5114200

√ 5114200 = 2261.46

Answer:

1

Step-by-step explanation:

Answer:

4 + (-3) = 1

i hope that helps!

Answer:

La abscisa x del centro de masa está en reposo (velocidades opuestas)

Vx = 0

La ordenada del centro de masa es:

y = h + Vo sen(α) t + Vo sen(α) t = h + 2 Vo sen(α) t

La velocidad es la derivada de y respecto del tiempo:

Vy = 2 Vo sen(α)

b) Momento lineal (p = m V)

En el eje x: px = 0 (momento lineal)

En el eje y: py = 2 m Vy = 4 m Vo sen(α)

dame corazon y 5 estrellas

Step-by-step explanation:

Answer:

56x = -152

Step-by-step explanation:

8(4+7x) + 6(-1 + 8)  = -78

32 + 56x - 6 + 48 = -78  

32 + 48 - 6

74 + 56x = -78

-74             -74

56x = -152

Answer:

[tex] \boxed{\sf {(3+\sqrt{2})}^2 = 11 + 6 \sqrt{2} } [/tex]

Step-by-step explanation:

[tex] \sf \implies {(3 + \sqrt{2} )}^{2} \\ \\ \sf \implies (3 + \sqrt{2} )(3 + \sqrt{2} ) \\ \\ \sf \implies 3(3 + \sqrt{2} ) + \sqrt{2} (3 + \sqrt{2} ) \\ \\ \sf \implies (3 \times 3) + (3 \times \sqrt{2} ) + ( \sqrt{2} \times 3) + ( \sqrt{2} \times \sqrt{2} ) \\ \\ \sf \implies 9 + 3 \sqrt{2} + 3 \sqrt{2} + 2 \\ \\ \sf \implies 9 + 6 \sqrt{2} + 2 \\ \\ \sf \implies 11 + 6 \sqrt{2} [/tex]

Answer:

Exact Form:

[tex]11 +6\sqrt{2}[/tex]

Decimal Form:

19.48528137…

Step-by-step explanation:

Rewrite [tex](3+\sqrt{2} )^2[/tex] as [tex](3+\sqrt{2} )+(3+\sqrt{2} )[/tex]

Expand [tex](3+\sqrt{2} )+(3+\sqrt{2} )[/tex] using the FOIL method.

Apply the distributive property.

    [tex]3(3+\sqrt{2} )+\sqrt{2} (3+\sqrt{2} )[/tex]

    [tex]3*3 +3+\sqrt{2} +\sqrt{2} (3+\sqrt{2} )[/tex]

    [tex]3*3 +3\sqrt{2} +\sqrt{2}* 3+\sqrt{2} \sqrt{2}[/tex]

Simplify and combine like terms.

       Simplify each term.

        [tex]9+3\sqrt{2} +3\sqrt{2} +2[/tex]

         Add 9 and 2

         [tex]11+3\sqrt{2} +3\sqrt{2}[/tex]

         Add [tex]3\sqrt{2}[/tex] and [tex]3\sqrt{2}[/tex]

          11+[tex]6\sqrt{2}[/tex]  

The result can be shown in multiple forms.

Exact Form:

 11+[tex]6\sqrt{2}[/tex]  

and

Decimal Form:

19.48528137

....

Answer:7x

Step-by-step explanation:because you can’t multiply them like 2*2 so you just put them together

Answer: its the first one bud

Step-by-step explanation:

Answer:

A.

Step-by-step explanation:

If you find the given values on the number line and compare them, you can see that -2 is further to the right than -2.5, so -2 is greater than -2.5.

The further to the right a number is, the greater it is.

Answer:

hope this helped! Can you give me brainliest please? :))

Step-by-step explanation:

A: -7

E: +6.9

Answer:

x=-3

Step-by-step explanation:

it just simple divide both sides by -4

-4x / -4 = 12/-4

x=-3

Answer:

-3

Step-by-step explanation:

Divide 12/-4  

Which equals -3 So that would be you answer