Please help find area brainliest

Answer:

x=4

Step-by-step explanation:

8x - 7 =2(2x +7) - 5

8x - 7 =4x +14 - 5

8x - 7 =4x +9

8x - 4x =9 +7

4x =16

x=16 :4

x=4

Answer:

A and C

Step-by-step explanation:

Because coeficcients are numbers that come before a variable

Answer:

18 practices

Step-by-step explanation:

9.63 / 9 = 1.07

19.26 - 1.07 = 18

Answer:

If problem is "-|2x+3|+8=12"

then there is (no solution.)

Step-by-step explanation:

Let's solve your equation step-by-step.

−|2x+3|+8=12

Step 1: Add -8 to both sides.

−|2x+3|+8+−8=12+−8

−|2x+3|=4

Step 2: Divide both sides by -1.

−|2x+3|=4

   -1       -1

|2x+3|=−4

Step 3: Solve Absolute Value.

|2x+3|=−4

No solutions Because absolute value is less than 0.

Answer:

[tex]45x^2+198xo+978x+79[/tex]

Step-by-step explanation:

I start my grouping the like terms.[tex]=45x^2+45xo+153xo+4x-135x+1109x+32+47[/tex]

Then, I add the similar elements.

[tex]4x-135x+1109x=978x[/tex]

[tex]=45x^2+198xo+978x+32+47[/tex]

Finally, I added the numbers up.

[tex]=45x^2+198xo+978x+79[/tex]

Answer:

k = 7

Step-by-step explanation:

Step 1: Write equation

-18 = 5 - (6k - 19)

Step 2: Solve for k

Distribute negative: -18 = 5 - 6k + 19

Combine like terms: -18 = -6k + 24

Subtract 24 on both sides: -42 = -6k

Divide both sides by -6: k = 7

Step 3: Check

Plug in k to verify it's a solution.

-18 = 5 - (6(7) - 19)

-18 = 5 - (42 - 19)

-18 = 5 - 23

-18 = -18

Answer:

-7k-4K=8-2k-8k

-11K = 8-10K             (combine like terms)

8 = -11k+10k              (move the -10 to combine like term with -11)

8 = -1k

k = 8/-1                      (isolate the k to find its value by dividing the 8)

k = -8

Answer:

[tex]Slope = -1[/tex]

[tex]y = -2[/tex] --- y intercept

[tex]x = -2[/tex] ---- x intercept

[tex]y = -x - 2[/tex] --- equation

Step-by-step explanation:

Given

Represent temperature with y and time with x

When

[tex]y = 0F; x = 2hrs\ before\ sunsets[/tex]

[tex]y = -4F; x = 2hrs\ after\ sunset[/tex]

Solving Slope;

[tex]Slope = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

[tex]Slope = \frac{-4 - 0}{2 - (-2)}[/tex]

[tex]Slope = \frac{-4 - 0}{2 +2}[/tex]

[tex]Slope = \frac{-4}{4}[/tex]

[tex]Slope = -1[/tex]

Using

[tex]Slope = \frac{y - y_1}{x - x_1}[/tex], we can get the equation

Where

[tex]Slope = -1[/tex]

[tex]x_1 = -2[/tex]

[tex]y_1 = 0[/tex]

This gives:

[tex]-1 = \frac{y - 0}{x -(-2)}[/tex]

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

Cross multiply

[tex]y = -x - 2[/tex]

Take x as 0; to solve the y intercept

[tex]y = -0 - 2[/tex]

[tex]y = -2[/tex]

Take y as 0; to solve the x intercept

[tex]0 = -x -2[/tex]

[tex]x = -2[/tex]

Answer:Answer:

--- y intercept

---- x intercept

--- equation

Step-by-step explanation:

Given

Represent temperature with y and time with x

When

Solving Slope;

Using

, we can get the equation

Where

This gives:

Cross multiply

Take x as 0; to solve the y intercept

Take y as 0; to solve the x intercept

Step-by-step explanation:

Answer:

85-9y= 7(4+y)

solve for y if you need to simplify

Answer:

U simply multiply 483 by 3.5

                           =1690.5

Step-by-step explanation:  

Answer:

multiply by 10 on both sides

that is to get rid of the denominator

Answer:

[tex]Max = 15[/tex]

Step-by-step explanation:

Given

[tex]s(y) = -2y^2 + 60y + 10[/tex]

Required

Determine number of items that gives maximum earnings;

The general form of a quadratic equation is:

[tex]s(y) = ay^2 + by + c[/tex]

And the maximum is calculated as:

[tex]Max = \frac{-b}{2a}[/tex] If a<0

Comparing [tex]s(y) = ay^2 + by + c[/tex] to [tex]s(y) = -2y^2 + 60y + 10[/tex]

We have that:

[tex]a = -2[/tex]     [tex]b = 60[/tex]   [tex]c = 10[/tex]

Substitute these values to

[tex]Max = \frac{-b}{2a}[/tex]

[tex]Max = \frac{-60}{2 * -2}[/tex]

[tex]Max = \frac{-60}{-4}[/tex]

[tex]Max = 15[/tex]

The number of item that maximizes the function is when y = 15

Answer:

-$11.34

Step-by-step explanation:

Each of these tickets have been said to have the same costs of buying them.

If 6 tickets = -68.04 dollars

1 ticket = ?

We cross multiply to get the unknown

6 x ? = 1 x -68.04

Such that

? = -68.04/6

= -$11.34

So in conclusion if Taylor had not bought these 6 tickets and had only gotten 1 for the movie, the change to his account balance would be $-11.34

Answer:From cheapest to most expensive: Bobby, Amy, Carlos

-Hope this helped!

Step-by-step explanation:

Amy pays $3. 6/2=3

Bobby pays $2.50. 15/6=2.5

Carlos pays $4. 32/8=4

Answer:

  B, C, E

Step-by-step explanation:

Translation is a rigid transformation. As such, it preserves sizes and angles. "Isometric" is another way to say "the size is preserved."

When you raise an exponential expression to another exponent, you multiply the exponents. We have 8*5 = 40 as the final exponent. The rule is (x^y)^z = x^(y*z). The base stays the same.

Statement A is not true because we should be adding the exponents. The rule is x^y*x^z = x^(y+z). Note how the bases are all the same. We'll use this rule for statement C to show that it is also false.

A similar rule is (x^y)/(x^z) = x^(y-z). We subtract the exponents this time. This rule is used to show that statement D is false.

Answer:

[tex]\displaystyle f^{-1}(x)=\frac{1+x}{3x}[/tex]

Step-by-step explanation:

The Inverse of a Function

The procedure to find the inverse of the function is:

* Write the function as a two-variable equation:

[tex]\displaystyle y=\frac{1}{3x-1}[/tex]

* Solve the equation for x.

Multiply by 3x-1

[tex]y(3x-1)=1[/tex]

Divide by y:

[tex]\displaystyle 3x-1=\frac{1}{y}[/tex]

Sum 1:

[tex]\displaystyle 3x=\frac{1}{y}+1[/tex]

Operate the right side:

[tex]\displaystyle 3x=\frac{1+y}{y}[/tex]

Divide by 3:

[tex]\displaystyle x=\frac{1+y}{3y}[/tex]

* Swap the variables:

[tex]\displaystyle y=\frac{1+x}{3x}[/tex]

Write back into function form:

[tex]\boxed{\displaystyle f^{-1}(x)=\frac{1+x}{3x}}[/tex]

Answer:

(c) The potential energy of the object decreases while the kinetic energy increases.

Step-by-step explanation:

Given that, an object falls through Earth's atmosphere.

As there is no friction of drag, this is the case of free fall.

So, there is no restriction in the motion of the object due to the air molecule. i.e there is no rubbing of air molecule with the object, so there is no possibility of heat (thermal energy) generation. So, the thermal energy of the object remains constant. So, options (a) and (d) are incorrect.

The only force that acts on the body is the gravitational force, as there is no drag. This force causes only the acceleration of the body. The shape of the body remains unaffected. So, there is no strain in the body. Hence, the elastic energy of the body is zero and there is no change in it. Option (b) is also incorrect.

Now, due to gravitational force, the object falls towards the earth, and its velocity increases. As the object moves towards the center of the Earth, so, the distance between the center of the earth and the object is decreases, which leads to a decrease in the potential energy of the object (as the potential energy of any object due to another body is directly proportional to the distance between the center of both the body).

While, the velocity of the object increases, so the kinetic energy of the object increases (as the kinetic energy of any object of directly proportional to the square of the velocity of the object).

Hence, the potential energy of the object decreases while the kinetic energy increases.

Therefore, option (c) is correct.

Answer:

C) The potential energy of the object decreases while the kinetic energy increases.

Answer:

10 eggs

Step-by-step explanation:

5 cartons multiplied by 12 eggs each equals 60 eggs in total.

Therefore 5/6 would be equal to 50/60 since we multiply the denominator and numerator by 10

As a result 10 of the eggs are not brown

Answer:

4 meters and 20 centimeters will be 420 centimeters

Step-by-step explanation:

Answer:

420 (cm)

Step-by-step explanation:

1 meter = 100 centimeters.

so,

4 meters = 400 centimeters

400 + 20 equals 420cm

Answer:

4

Step-by-step explanation:

Answer:

Step-by-step explanation:

Simplify 3√6 − 10√2 ⋅ √3

The cost of apples per lb is less than cost of cherries per lb.

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.

We have the graph shows the costs of two types of fruit at a store. Two lines, labeled Cherries and Apples, exit the origin to show that cost increases as amount increases.

Slope of the line representing apples is smaller than slope of the line representing cherries. This means that the unit rate for cherries is greater than that of apples. So, cost of apples per lb is less than cost of cherries per lb.

Therefore, the cost of apples per lb is less than cost of cherries per lb.

To solve more questions on straight lines, visit the link below-

brainly.com/question/20400984

#SPJ1

Answer:

10

Step-by-step explanation:

Answer:

Derived from the Pythagorean Theorem, the distance formula is used to find the distance between two points in the plane. The Pythagorean Theorem, a2+b2=c2 a 2 + b 2 = c 2 , is based on a right triangle where a and b are the lengths of the legs adjacent to the right angle, and c is the length of the hypotenuse.

Step-by-step explanation:

Answer:

Derived from the Pythagorean Theorem, the distance formula is used to find the distance between two points in the plane. The Pythagorean Theorem, a2+b2=c2 a 2 + b 2 = c 2 , is based on a right triangle where a and b are the lengths of the legs adjacent to the right angle, and c is the length of the hypotenuse.

Step-by-step explanation:

Answer:

[tex]a = 145\ cm[/tex]

Step-by-step explanation:

Given

[tex]a + b + c = 445[/tex]

[tex]a = 45 + b[/tex]

[tex]b = \frac{1}{2}c[/tex]

Required

Determine the length of a

Solve for c in [tex]b = \frac{1}{2}c[/tex]

[tex]2 * b = \frac{1}{2}c * 2[/tex]

[tex]2b = c[/tex]

[tex]c = 2b[/tex]

Substitute [tex]c = 2b[/tex] and [tex]a = 45 + b[/tex] in [tex]a + b + c = 445[/tex]

[tex]a + b + c = 445[/tex]

[tex]45 + b + b + 2b = 445[/tex]

[tex]45 + 4b = 445[/tex]

Solve for 4b

[tex]4b = 445 - 45[/tex]

[tex]4b = 400[/tex]

Solve for b

[tex]b = 400/4[/tex]

[tex]b = 100[/tex]

Recall that: [tex]a = 45 + b[/tex]

[tex]a=45+100[/tex]

[tex]a = 145\ cm[/tex]

Answer:

|a| = 0.447

|b| = 0.547

|c| = 0.707

Step-by-step explanation:

From available data

Ψ1 = Ee = 10eV probability = 0.2

Ψ2 = Ee = 16eV, probability = 0.3

Ψ3 = Ee = 34eV, probability = 0.5

The magnitude of a

= a² = 0.2

= a = √0.2

|a| = 0.447

The magnitude of b

b² = 0.3

b = √0.3

|b| = 0.547

The magnitude of c

c² = 0.5

c = √0.5

|c| = 0.707

So in conclusion we have magnitude of a = 0.447

b = 0.547

c = 0.707

The magnitude of a , b and c are [tex]0.447, 0.547[/tex] and [tex]0.707[/tex] respectively.

The electron's wave function is given as,

          [tex]\psi=a\psi _{1}+b \psi _{2}+c\psi _ {3}[/tex]

three values of the electron kinetic energy is given as,

[tex]\psi _{1}[/tex] has E = 10 eV, with probability 0.2

[tex]\psi _{2}[/tex] has E = 16 eV, with probability 0.3.

[tex]\psi _{3}[/tex] has E= 34 eV, with probability 0.5.

The value of a, b and c shown below,

    [tex]a^{2}=0.2\\ \\a=\sqrt{0.2}=0.447\\ \\b=\sqrt{0.3}=0.547\\ \\c=\sqrt{0.5}=0.707[/tex]

Learn more about the Kinetic energy here:

https://brainly.com/question/25959744

Answer: 1) NO. the zeros are: 2 and -7

              2) (x + 5)² has a middle term when in expanded form

             3) Factoring provides the Intercept form: y = a(x - p)(x - q)

Step-by-step explanation:

1) y = (x - 2)(x + 7)

To find the zeros, set the factors equal to zero:

0 = x - 2        0 = x + 7

x = 2              x = -7

The zeros are 2 and -7.  

The student did not set the factors equal to zero.

2) (x + 5)² = (x + 5)(x + 5)

               = x² + 5x + 5x + 25

               = x² + 10x + 25       ≠  x² + 25

3) The Intercept form of a quadratic equation is: y = a(x - p)(x - q) where p and q are the x-intercepts.  Notice that the intercept form IS the factored form. Set the factors equal to zero to find the x-intercepts.

y = x² - 4x + 3

y = (x - 1)(x - 3)     --> Intercept form

0 = (x - 1)(x - 3)    --> finding the zeros (aka x-intercepts)

0 = x - 1       0 = x - 3

x = 1            x = 3       -->    zeros are 1 and 3

1.The zeroes are 2,-7

2.[tex]x^2 + 25\neq ( x + 5)^{2}[/tex]

3. So, factoring can help to find the x-intercepts

1.We have y = (x - 2)(x + 7)

For zeroes of y , Put y=0

(x - 2)(x + 7) =0

x=2,-7

So, the zeroes of y = (x - 2)(x + 7) are 2 and -7.

2. We have [tex]x^2 + 25[/tex]

[tex]x^2 + 25= x^2 + 5^{2}[/tex]

And

[tex](x+ 5)^{2} \\=x^{2} +5^{2} +10x\\=x^{2} +25 +10x\\\neq x^{2} +25[/tex]

So, [tex]x^2 + 25\neq ( x + 5)^{2}[/tex]

3.We have the quadratic function [tex]y = x^2 - 4x + 3[/tex]

[tex]y=x^2 - 4x + 3\\=(x-3)(x-1)\\[/tex]

For x-intercept put y=0, we get

[tex](x-3)(x-1)=0\\x=3,x=1[/tex]

So, factoring can help to find the x-intercepts of the graph of the quadratic function [tex]y = x^2 - 4x + 3.[/tex]

Learn more:https://brainly.com/question/24800104

Answer:

2,175 calories

Step-by-step explanation:

140 pound person will use 2100 calories per day

145 pounds person will use x calories per day

Find x

Pounds : calories

140 : 2100 = 145 : x

140/2100 = 145/x

Cross product

140 * x = 2100 * 145

140x = 304,500

Divide both sides by 140

x = 304,500 / 140

= 2,175

Therefore,

145 pounds person will use 2175 calories per day