A race horse that wins three 3200 meter cup in a time of 200 seconds. what is the race horses Average speed?

Answer:

Step-by-step explanation:

x= base

one side= x-6

other side= 4+x

x+x-6+4+x = 43

3x=43+2

x=15 length of base

The length of base is 15 cm.

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

let the base of triangle be x

Length of one side = x- 6

and, length of other side = x+ 4

Now, perimeter of triangle= 43 cm.

x+ x -6 +x +4= 43

3x -2 = 43

3x= 45

x=15

So, x= 15 cm

x-6 = 15- 6 = 9cm

x+ 4 = 15+ 4= 19cm

Hence, the length of base is 15 cm.

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Answer:

oh b this is a hard question

Step-by-step explanation:

i will answer it gimme a few mins to learn this things

Answer:

Options B and D are correct.

Step-by-step explanation:

The given equation is :

[tex]y= -16x^{2}+48x+64[/tex]

We can see that it is a quadratic equation.

Hence it is non linear.

The rate is dependent on x, so it does not have a constant rate of change  also.

We can check this :

At x= 0, y = 64

At x=1, y = [tex]-16+48+64=96[/tex]

Hence, the function does not have a constant rate of change.

So, the answer is :

I suppose you want to solve the equation for m. To do so, multiply both sides by 8m to get

[tex] 3m = -1 [/tex]

Now divide both sides by 3 to get

[tex] m = -\dfrac{1}{3}[/tex]

m = - [tex]\frac{1}{3}[/tex]

multiply both sides by 8m to eliminate fractions

3m = - 1 ( divide both sides by 3 )

m = - [tex]\frac{1}{3}[/tex]

Compensation is the process of reformulating an addition, subtraction, multiplication, or division problem to one that can be computed more easily mentally.

We will use compensation to find the difference of 30,000 and 6985.

Since, we have to evaluate 30,000 - 6,985

Let us add '15' to 6985,

6,985 + 15 = 7,000

Let us add '15' to 30,000

30,000 + 15 = 30,015

Now, we have to subtract 30,015  and 7,000

= 30,015 - 7,000

= 23,015

Therefore, the difference of 6,985 from 30,000 is 23,015.

The strategy of compensation involves adjusting numbers to make calculations easier. In the case of finding the difference between 30000 and 6985, you would adjust 6985 to 7000, subtract it from 30000 to get 23000, then add back the 15 you added to 6985 at the beginning. The result is 23015.

In mathematics, compensation is a strategy where you adjust one of the numbers to make the equation easier to solve. Pivotally, you make the same adjustment to the other number so as not to change the overall result.

Let's use this strategy to find the difference between 30000 and 6985

So, through the use of compensation the difference between 30000 and 6985 is 23015.

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Answer:

Second Picture 3rd Picture 1st Picture

Step-by-step explanation:

You're welcome!

The y-intercept of the given exponential graph is 2

The given graph is an exponential function with a general form y = ab^x

This means that we need to find the equivalent value of f(x) when x = 0. From the table, we can see that the required equivalent y-intercept at when x = 0 is 2

Hence the y-intercept of the given graph is 2

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Answer :

The profit at point (0,5) is, 400

The profit at point (1,12) is, 1010

The profit at point (4,10) is, 1000

Step-by-step explanation :

Coordinates : It is a set of values which show an exact position on a graph.

There are two variables or coordinates that are x-coordinate and y-coordinate.

As we are given that function:

[tex]P=50x+80y[/tex]

where,

P = profit

x and y are the coordinates.

(1) Now we have to calculate the profit at point (0,5).

[tex]P=50x+80y[/tex]

x = 0 and y = 5

[tex]P=50\times 0+80\times 5[/tex]

[tex]P=0+400[/tex]

[tex]P=400[/tex]

The profit at point (0,5) is, 400

(2) Now we have to calculate the profit at point (1,12).

[tex]P=50x+80y[/tex]

x = 1 and y = 12

[tex]P=50\times 1+80\times 12[/tex]

[tex]P=50+960[/tex]

[tex]P=1010[/tex]

The profit at point (1,12) is, 1010

(3) Now we have to calculate the profit at point (4,10).

[tex]P=50x+80y[/tex]

x = 4 and y = 10

[tex]P=50\times 4+80\times 10[/tex]

[tex]P=200+800[/tex]

[tex]P=1000[/tex]

The profit at point (4,10) is, 1000

Answer:

17. Equation : [tex]y=-x-1[/tex]

18: Equation: [tex]y=\frac{1}{2}x+8[/tex]

19: Equation: [tex]y=3x-6[/tex]

20: Equation: [tex]y=\frac{1}{3}x-2[/tex]

Step-by-step explanation:

Using the Slope-Intercept Form for the following questions:

Equation of line: [tex]y=mx+b[/tex] where m is the slope and b is the y-intercept.

17. A(3, -4), [tex]y=-x+8[/tex]

First substitute the slope from the original line [tex]y=-x+8[/tex] (i.e. -1 in this case) into the equation of line.

[tex]y=(-1)x+b[/tex]        .....(1)

Now, substitute the given point A(3,-4) in the equation (1), we have;

[tex]-4=(-1)\cdot (3)+b[/tex]

[tex]-4=-3+b[/tex]

[tex]-4+3=b[/tex]

∴[tex]b=-1[/tex]

Substitute the value of b=-1 in the Slope-Intercept form i.e, [tex]y=-x+(-1)[/tex]

[tex]y=-x-1[/tex]

Therefore, the equation of the line passing through the given point that is parallel to the given line is, [tex]y=-x-1[/tex].

18. A(-6, 5) , [tex]y=\frac{1}{2}x -7[/tex]

First substitute the slope from the original line [tex]y=\frac{1}{2}x -7[/tex] (i.e.  [tex]\frac{1}{2}[/tex] in this case) into the equation of line.

[tex]y=\frac{1}{2} x+b[/tex]        .....(1)

Now, substitute the given point A(-6, 5) in the equation (1), we have;

[tex]5=\frac{1}{2} \cdot (-6)+b[/tex]

[tex]5=-3+b[/tex]

[tex]5+3=b[/tex]

∴[tex]b=8[/tex]

Substitute the value of b=8 in the Slope-Intercept form i.e, [tex]y=\frac{1}{2}x+8[/tex]

[tex]y=\frac{1}{2}x+8[/tex]

Therefore, the equation of the line passing through the given point that is parallel to the given line is, [tex]y=\frac{1}{2}x+8[/tex].

19. A(2,0), [tex]y=3x-5[/tex]

First substitute the slope from the original line [tex]y=3x-5[/tex] (i.e. 3 in this case) into the equation of line.

[tex]y=3x+b[/tex]       .....(1)

Now, substitute the given point A(2, 0) in the equation (1), we have;

[tex]0=3\cdot (2)+b[/tex]

[tex]0=6+b[/tex]

∴[tex]b=-6[/tex]

Substitute the value of b=-6 in the Slope-Intercept form i.e, [tex]y=3x+(-6)[/tex]

[tex]y=3x-6[/tex]

Therefore, the equation of the line passing through the given point that is parallel to the given line is, [tex]y=3x-6[/tex]

20. A(3, -1), [tex]y=\frac{1}{3}x+10[/tex]

First substitute the slope from the original line [tex]y=\frac{1}{3}x +10[/tex] (i.e.  [tex]\frac{1}{3}[/tex] in this case) into the equation of line.

[tex]y=\frac{1}{3} x+b[/tex]        .....(1)

Now, substitute the given point A(3, -1) in the equation (1), we have;

[tex]-1=\frac{1}{3} \cdot (3)+b[/tex]

[tex]-1=1+b[/tex]

[tex]-1-1=b[/tex]

∴[tex]b=-2[/tex]

Substitute the value of b=-2 in the Slope-Intercept form i.e, [tex]y=\frac{1}{3}x+(-2)[/tex]

[tex]y=\frac{1}{3}x-2[/tex]

Therefore, the equation of the line passing through the given point that is parallel to the given line is, [tex]y=\frac{1}{3}x-2[/tex].

Answer:

[tex]P(x)=8x-150[/tex]

Step-by-step explanation:

Let

x-----> the number of shirts

we know that

The equation of the cost is equal to

[tex]C(x)=2x+150[/tex]

The equation of the sell is equal to

[tex]S(x)=10x[/tex]

The equation of the profit is equal to

[tex]P(x)=S(x)-C(x)[/tex]

substitute the values

[tex]P(x)=10x-(2x+150)=8x-150[/tex]

Hello there!

The answer should be the first option A.

16-(-11)

16+11

Answer⇒=27

10-17

10+-17

Answer⇒=-7

-15-(-12)

-15+12

Answer⇒=-3

-25-2

-25+-2

Answer⇒=-27

Hope this helps!

Thank you for posting your question at here on Brainly.

-Charlie

Option a, 16-(-11), is the expression that has a value of 27.

To find the expression that has a value of 27, we can evaluate each option:

Let's evaluate each expression to determine which one equals 27:

a. 16−(−11)

Applying the rule that subtracting a negative number is the same as adding its positive counterpart:

16+11=27

Therefore, a equals 27.

b. 10−17

Subtracting 17 from 10:

10−17=−7

This does not equal 27.

c. −15−(−12)

Similar to the first expression, subtracting a negative is the same as adding its positive counterpart:

−15+12=−3

This does not equal 27.

d.−25−2                                                                                                                                                                                                              Subtracting 2 from -25:

−25−2=−27

This does not equal 27.

Hence, after evaluating each expression, the correct choice that equals 27 is option a: 16−(−11)

Therefore, option a, 16-(-11), is the expression that has a value of 27.

Complete Question:                                                                                                                                                                                                

which expression has a value of 27.a.16-(-11)  b.10-17  c.-15-(-12)  d.-25-2

The dimensions of the rectangle that has a perimeter of 42 cm are:

length = 12 cm

width = 9 cm

Recall:

The perimeter of a rectangle is given as:

Given the following:

Therefore:

[tex]2((x + 4) + (2x -7)) = 42[/tex]

[tex]2(x + 4 + 2x -7) = 42[/tex]

[tex]2(3x -3) = 42\\\\6x - 6 = 42\\\\[/tex]

[tex]6x - 6 + 6 = 42 + 6\\\\6x = 48\\[/tex]

[tex]x = 8[/tex]

Find the dimensions of the rectangle by plugging in the value of x

[tex]length = (x+4) = 8 + 4 = 12 $ cm\\\\width = (2x - 7) = 2(8) - 7 = 9 $ cm[/tex]

Therefore, the dimensions of the rectangle that has a perimeter of 42 cm are:

length = 12 cm

width = 9 cm

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I'm pretty sure the answer is 5/16

Answer:

125 ÷ 3 = ____

Jamie + 2 brothers = _____

Then divide __ by the number if toy cars. ( 125 )

Answer: length = 19 inches and width = 8 inches

Step-by-step explanation: To solve this problem, our first task is to set up variables.

Since the length of the rectangle is 5 inches less than 3 times its width, we can set up variables to represent this.

Variables

X ⇒ width

3x - 5 ⇒ length

To help set up our equation, I will draw a picture of the rectangle labeling the widths X and the lengths 3x - 5.

Going back to the original problem, the second sentence states that the perimeter of he rectangle is 54 inches. Remember that the perimeter is the distance around the rectangle.

Based on the picture I provided, our equation will read as followed.

X + X + (3x -5) + (3x - 5) = 54

8x - 10 = 54   ← simplify on the left side of the equation

     +10  +10   ← add 10 on both sides

8x = 64

÷8    ÷8

 X = 8

Therefore, the width of our rectangle is 8 inches and the length of our rectangle is (3 x 8) - 5 or 19.

Answer:

16 lines of symmetry.

Step-by-step explanation:

D is your answer!

Hope this helps!!

Option D is correct, 16  lines of symmetry does a regular polygon with 16 sides have.

a polygon is a plane figure made up of line segments connected to form a closed polygonal chain.

Apothem for a regular polygon is a line segment that originates from the center of the regular polygon and touches the mid of one of the sides of the regular polygon.

It is perpendicular to the regular polygon's side it touches.

Regular polygons have all sides the same and that apothem bisects the side in two parts, (provable by symmetry).

A regular polygon with 16 sides has a line of symmetry.

It has 16 lines of symmetry as well.

Hence, 16  lines of symmetry does a regular polygon with 16 sides have.

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The answer is D

This is because if for every $50 he saves $5, and he has saved a total of $500, you can set up a proportion to find out how much money he has saved at that point.

The proportion is as follows:

50/5 == 500/x

x is equivalent to the amount of money he has saved

You can cross multiply to get the following equation:

50x == 2500

To isolate x, you must divide both sides by 50, giving you an answer of:

x = 50

This is the same as option D

A: For this equation you would use distributive property leading you to multiply 3x and 2 by 4 giving you a new expression. 12x + 8 - 2. After this you would just simplify the equation by subtracting 2 from 8 giving you 6. This leading to a new equation, 12x + 6.

B: In order to factor the expression you would need to do the reverse of distributive property, finding the GCF, or greatest common factor between the 16 and the 20b. When you do this you result in getting 4 as your GCF. Afterwards you need to divided the numbers by the GCF. Leading you to get 4(5b-4). This is how you would factor the equation.

Answer:

8f + 4g

Step-by-step explanation:

Distribute the 2 to all terms within the parenthesis

2(4f) = 8f

2(2g) = 4g

8f + 4g is your expression

~Senpai

Hey!

Alright, according to P.E.M.D.A.S., the first step to solving this expression is to distribute.

Original Expression :

[tex]\displaystyle\ -8y^{3} (7y^{2} -4y-1)[/tex]

New Expression {Distributed Old Expression} :

[tex]\displaystyle\ -(56y^{5} -32y^{4} -8y^{3} )[/tex]

Now all you have to do is simplify the parenthesis.

Old Expression :

[tex]\displaystyle\ -(56y^{5} -32y^{4} -8y^{3} )[/tex]

New Expression {Simplified} :

[tex]\displaystyle\ -56y^{5} + 32y^{4} + 8y^{3}[/tex]

So, since the expression can no longer be simplified, the final answer is...

Hope this helps!

- Lindsey Frazier ♥

Solution :

Given expression [tex]-8y^{3}(7y^{2}-4y-1)[/tex]

To simplify this expression, first we need to know about the Distributive property.

Distributive Property: [tex]a\times(b+c+d)=(a\times b)+(a\times c)+(a\times d)[/tex]

Given expression [tex]-8y^{3}(7y^{2}-4y-1)[/tex]

Applying Distributive property on this expression:

[tex]\Rigtharrow -8y^{3}(7y^{2}-4y-1)=((-8y^{3})\times7y^{2})+((-8y^{3})\times(-4y))+((-8y^{3})\times(-1))[/tex]

                           [tex]= -56y^{5}+32y^{4}+8y^{3}[/tex]

Hence, the simplified form of the expression  [tex]-8y^{3}(7y^{2}-4y-1)[/tex] is  [tex]-56y^{5}+32y^{4}+8y^{3}[/tex].

You would have worked 6 hours as lifeguard and 8 hours as cashier.

8(14 - y) + 6y = 96

112 - 8y + 6y = 96

112 - 2y = 96

-2y = -16

y = -16/-2 = 8

You worked 8 hours as a cashier. since the total hours worked is 14 we know you worked as a lifeguard for 6 hours.

Final answer:

To solve b(x) = 8x when b(x) = -56, we set 8x = -56, divide both sides by 8, and get x = -7. No other solutions are necessary, as the given equations are not quadratic but linear.

Explanation:

The problem involves an equation b(x) = 8x and the value b(x) = -56. We need to set these equal to each other to find the value of x that satisfies both conditions. So we have the equation 8x = -56. To solve this, we divide both sides of the equation by 8, giving us x = -7.

To check for other potential solutions, let's consider that b in the quadratic equation ax² + bx + c = 0 may be set to zero. For our equation, b does not appear to be zero, but if it were, we could simplify the equation by factoring out an x.

If the equation were in the form ax² = -c, we could solve for x by taking the square root of -c/a after moving c to the other side and dividing by a. However, in our current problem, this is not necessary since we don't have a quadratic equation but a simple linear one.

To find out how much she earned per hour you want to divide.

$66.70/9.2 = $7.25

Susie earned $7.25 per hour.

Hope this Helps!!

Susie earns $7.25 per hour.

To determine how much Susie earns per hour, you need to divide her total earnings by the number of hours worked. Given that Susie earned $66.70 in 9.2 hours, you can calculate her hourly rate as follows:

Hourly Rate = Total Earnings / Hours Worked

Hourly Rate = $66.70 / 9.2 hours

Hourly Rate = $7.25 per hour (rounded to two decimal places)

Thus, Susie earns $7.25 per hour.

Answer:

480

We round the number up to the nearest ten if the last digit in the number is 5, 6, 7, 8, or 9.

We round the number down to the nearest ten if the last digit in the number is 1, 2, 3, or 4.

If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.

Answer:

5 hours

Step-by-step explanation:

Given: the water temperature at the beach started at 82 degrees and it is rising 0.6 degrees each hour

To Find: If the water temperature is now 85 degrees write and solve an equation to find h, the number of hours that have passed

Solution:

Current water temperature at beach [tex]=82^{\circ}[/tex]

temperature rising rate degrees per hour [tex]=0.6^{\circ}[/tex]

let [tex]\text{h}[/tex] be the hours passed.

water temperature at the beach after hour [tex]\text{h}[/tex] be

                                                                       [tex]= 82+0.6\text{h}[/tex]

Therefore,

equation for water temperature after [tex]\text{h}[/tex] [tex]\text{hour}[/tex] is

                    [tex]= 82+0.6\text{h}[/tex]

When water temperature is [tex]85^{\circ}[/tex]

                    [tex]85=82+0.6\text{h}[/tex]

                    [tex]0.6\text{h}=85-82[/tex]

                    [tex]0.6\text{h}=3[/tex]

                    [tex]\text{h}=\frac{3}{0.6}[/tex]

                    [tex]\text{h}=5[/tex] [tex]\text{hours}[/tex]

therefore it will take  [tex]5[/tex] [tex]\text{hours}[/tex] to reach temperature [tex]85^{\circ}[/tex]

Initial temperature = 82°

Rate of temperature rise = 0.6° per hour

Final temperature = 85°

The equation which describes the relationship :

Final temperature = Initial temperature + (rate × number of hours)

Number of hours = h

Mathematically, the relationship can be written as :

85 = 82 + 0.6h

Solving for h :

Subtract 82 from both sides :

85 - 82 = 0.6h

3 = 0.6h

Divide both sides by 0.6

3/0.6 = h

h = 5

Hence, the temperature will be 85° after 5 hours

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Answer:  The correct option is

(C) 9x.

Step-by-step explanation:  We are given to simplify the following expression :

[tex]E=(7x)-(-2x)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]

We will be using the following rule in simplifying the given expression :

[tex]a-(-b)=a+b.[/tex]

From expression (i), we get

[tex]E\\\\=(7x)-(-2x)\\\\=7x+2x\\\\=(7+2)x\\\\=9x.[/tex]

Thus, the required simplified form is 9x.

Option (C) is CORRECT.

By applying the distributive property of equality, the expression, (7x)- (-2x), is simplified as: C) 9x.

To simplify (7x) - (-2x), follow these steps:

Step 1: Distribute the negative sign in front of (-2x) by using "-" to multiply -2x to open up the parentheses:

(7x) + (2x) [distributive property of equality]

Step 2: Combine like terms {7x and 2x) by adding the coefficients of the x terms:

7x + 2x = 9x

The simplified expression is 9x.

So, the correct answer is therefore:

C) 9x

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Yes. All even numbers are composite. However digits - 2, 4, 6, and 8 - do not count, since a number must be greater than 9.

Yes all even numbers are composite because they have more than 1 factor

Answer:

She'll receive $6.53.

Step-by-step explanation:

First add everything she purcahsed.

1.22 + 1.48 + 7.98 + 2.79 = 13.47

Then subtract that from how much she paid.

20 - 13.47 = 6.53

So 6 dollars and 53 cents.

Hello!

To find the total amount of change we need to combine the total cost of everything first and then subtract that from 20!

$ 1.22+ $ 1.48+ $ 7.98+$ 2.79 = $ 13.47

$ 20.00 - $ 13.47 = $ 6.53

The answer to question is that she will recieve $6.53 in change if she pays with a $20 bill. If you need anymore clarification feel free to ask! Hope this helps.

Answer:

Step-by-step explanation: