Martin bikes at a constant speed to a finish line that is 15 mi away. After 20 mins, he is 10 mi from the finish line. After 30 mins, he is 7.5 mi from the finish line. If a graphics shows his distance y from the finish line, in miles, after x minutes, what is the slope of the graph, and what does it represent? A) 15; Martin’s initial distance from the finish line. B) 15; Martin’s final distance from the finish line. C) -0.25; the rate at which Martin’s distance from the finish line changes per minute. D) -0.25; the rate at which Martin’s distance from the start line changes per minute

Answer:

∠ 2 = 40°

Step-by-step explanation:

∠ 1 and ∠ 2 are corresponding angles and congruent, thus

∠ 2 = ∠ 1 = 40°

Answer:

(True or False) The inequality |x + 1| < 0 has no solution.

Solution

The absolute value of a real expression is either positive or equal to zero. Therefore there is no value of x that makes |x + 1| negative and therefore |x + 1| < 0 is never true and the statement "The inequality |x + 1| < 0 has no solution" is TRUE.

Answer:

false

2,x2+x-3

2

x

2

−

x

−

3

=

0

Factor by grouping.

Tap for more steps...

(

x

+

1

)

(

2

x

−

3

)

=

0

If any individual factor on the left side of the equation is equal to  

0

, the entire expression will be equal to  

0

.

x

+

1

=

0

2

x

−

3

=

0

Set the first factor equal to  

0

and solve.

Tap for more steps...

x

=

−

1

Set the next factor equal to  

0

and solve.

Tap for more steps...

x

=

3

2

The final solution is all the values that make  

(

x

+

1

)

(

2

x

−

3

)

=

0

true.

x

=

−

1

,

3

2

Step-by-step explanation:

Answer:

Cherokees were forced to leave their homes. There are usually peaceful, but this angered them, so naturally, they fought back and that's why the hostilities escalated.

Step-by-step explanation:

Answer:

€24

Step-by-step explanation:

If he had €80 and spent 0.3 of it, he spent 30% or 30/100 of it.

€80*[tex]\frac{30}{100}[/tex] =  €80*[tex]\frac{3}{10}[/tex] =  €24.

Please mark as brainliest!

The quadratic equations that have real roots are [tex]-2x^2+3x+4 = 0[/tex] and  [tex]2x^2+x-6 = 0[/tex].

The value of a discriminant of a quadratic equation shows how many roots f(x) have. If the value of the discriminant is greater than 0 then the quadratic equation has real and distinct roots and if the value of the discriminant is equal to 0, then the quadratic equation has real and same roots. In case the value of the discriminant is less than zero then the quadratic equation will have no real roots.

In order to know if the quadratic equation has real roots or not, we need to find the discriminant of the given quadratic equations,

A.) [tex]-x^2+2x -6 = 0[/tex]

Here, a= -1, b=2 and c=-6

[tex]D = b^2 -4ac[/tex]

[tex]D = 4 -24\\D = -20[/tex]

As the value of the discriminant is negative it will not have real roots.

B.) [tex]-2x^2+3x+4 = 0[/tex]

Here, a= -2, b=3 and c=4

[tex]D = b^2 -4ac[/tex]

[tex]D = 9 +32\\D = 41[/tex]

As the value of the discriminant is positive it will have real roots.

C.) [tex]2x^2+x-6 = 0[/tex]

Here, a=2, b=1 and c=-6

[tex]D = b^2 -4ac[/tex]

[tex]D = 1 +48\\D =49[/tex]

As the value of the discriminant is positive it will have real roots.

A.) [tex]2x^2 -x+3 = 0[/tex]

Here, a=2, b=-1 and c=3

[tex]D = b^2 -4ac[/tex]

[tex]D = 1-24\\D = -23[/tex]

As the value of the discriminant is negative it will not have real roots.

Learn more about Discriminant:

https://brainly.com/question/15884086

Answer:

a = 17

Step-by-step explanation:

using the cosine ratio in the right triangle and the exact value

cos45° = [tex]\frac{1}{\sqrt{2} }[/tex] , then

cos45° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{a}{17\sqrt{2} }[/tex] = [tex]\frac{1}{\sqrt{2} }[/tex] ( cross- multiply )

a × [tex]\sqrt{2}[/tex] = 17[tex]\sqrt{2}[/tex] ( divide both sides by [tex]\sqrt{2}[/tex] )

a = 17

b = 17 since the legs of an isosceles triangle are congruent

Answer:

Number  = 15.

Step-by-step explanation:

Given : If you multiply a number by 3 and then subtract 5, you will get 40.

To find : what is the number.

Solution : We have given if you multiply a number by 3 and then subtract 5, you will get 40.

According to question :

Let the number =  x

Multiply is with 3 = 3x

Subtract 5 from it we get 40 .

3x -5 = 40

On adding both sides by 5

3x = 45 .

On dividing both sides by 3

x =  15.

Therefore, Number  = 15.

Answer:

15

Step-by-step explanation:

3×y-5=40

3y-5=40

3y=40+5

3y=45

y=45÷3

y=15

Answer:

4 1/100

Step-by-step explanation:

Answer:

4 1/100

Step-by-step explanation:

Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there are  2   numbers to the right of the decimal point, place the decimal number over  10 ^2  ( 100 ) . Next, add the whole number to the left of the decimal.

Using the relation between velocity, distance and time, it is found that the trip took 2 hours.

Velocity is distance divided by time, that is:

[tex]v = \frac{d}{t}[/tex]

On the first part of the trip, a time of t was taken, with an average speed of 60 km/hour, hence:

[tex]60 = \frac{d}{t}[/tex]

d = 60t

On the second part, a time of t + 1 was taken, with an average speed of 40 km/hour, hence:

[tex]40 = \frac{d}{t+1}[/tex]

d = 40(t + 1).

Since the distance is equal for both parts, we can equal the equations and find the time.

60t = 40t + 40

20t = 40

t = 2.

The trip took 2 hours.

More can be learned about the relation between velocity, distance and time at https://brainly.com/question/24316569

Answer:

B

C

A

D

E

Step-by-step explanation:

i know this is due in 10 mins so i didnt want to waste time aha

but ill gladly give an explanation later

Answer:

See below.

Step-by-step explanation:

A) a⁴ => Some number to the power of four

B) y - 4 => Four less than an unknown number

C) z / 4 => Quotient of a variable and four

D) 4x => Four times an unknown value

E) b + 4 => Four more than some number

I think the answer should be D. The evidence is relevant because it explains how video games change the body

Answer:

What is the question?

Step-by-step explanation:

You did not attach a file, and all you posted was a statement, not a question. Please edit the question or I cannot help. Sorry......

Answer:

dont have question

Step-by-step explanation:

Answer:

161.557- so the second one

Step-by-step explanation:

Answer:

1st question the answer is four or less

2nd questions is the first and third one

Step-by-step explanation:

A function with a fifth-degree polynomial have 4 turning points.

What is mean by Subtraction?

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

Given that;

A function is a fifth-degree polynomial.

Now,

Since, We know that;

The turning point of n degree polynomial = n - 1

Here, The highest power of the polynomial = 5

Thus, The turning point of 5 degree polynomial = 5 - 1

                                                                           = 4

Therefore, A function with a fifth-degree polynomial have 4 turning points.

Learn more about the subtraction visit:

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#SPJ2

Given parameters:

   First sets of staircase  = [tex]\frac{1}{2}[/tex]

   Next sets  = [tex]\frac{1}{3}[/tex]

    Third sets  = [tex]\frac{1}{8}[/tex]

Unknown:

The least possible number of steps =?

Solution:

The least possible number of steps will be the lowest common multiples of these sets of steps.

We want fractions that will give whole numbers because realistically, one cannot take half a step of a step.

 So, the number of steps must be a multiple of denominators of the fractions given.

   Denominators are 2 , 3 and 8

     Their least common multiple is 24;

    This the lowest number by which 2, 3 and 8 can all divide.

So, the least number is 24 steps

Answer:

X = 9.4868

Step-by-step explanation:

Use the pythagorean theorem

a squared plus b squared equals c squared

in this case c equals x

A&b are the side and base length of a right triangle

Answer:

0.046

Step-by-step explanation:

Answer:

0.046

Step-by-step explanation:

Answer:

Step-by-step explanation:

2X=24-4 x=20/2 x=10

Answer:

Amy had 4 erasers. Brianna gave her x more erasers which doubled the amount of erasers she had. How many erasers does Amy have in total?

Answer:

x = 45°

Step-by-step explanation:

the triangle has 2 congruent sides and is therefore isosceles with the base angles being congruent, both x

the sum of the 3 angles = 180° , then

x + x + 90° = 180° ( subtract 90° from both sides )

2x = 90° ( divide both sides by 2 )

x = 45°

Answer:

1.67

Step-by-step explanation:

Answer:

280 inches

Step-by-step explanation:

The area can be found by looking at each shape individually.

The area of the square can be found my multiplying the length by the width...
14*14 = 196 square inches

The area of the triangle can be found by multiplying the base by the height and dividing by 2...
A = b*h/2 (or some text books say half of the base times the height)

We knot the height of the triangle is 12 inches, and the base is implied as it shares a side with a square which has 4 equal sides of 14 inches.  Therefore
A = (14*12)/2 = 84 square inches

We get the total area by combining the two segments...
Area (triangle) + Area (square) = Area (total)
84 + 196 = 280 square inches

Answer:

12

Step-by-step explanation:

it will be 12 because if you see the length were number 12 is it's the same as the other side

Answer:

y = − x + 9

Step-by-step explanation:

Plz Mark brainliest!

Answer:

The answer would be y=-x+9

Step-by-step explanation:

Fill in - and then 9

"Important put in negative symbol without 1 just negative symbol".

Answer:

B 452.16 cm^3

Step-by-step explanation:

the volume of the cylinder is 16π x 9, and if we replace π with 3.14, the answer will be 452.16 cm^3

Step-by-step explanation:

[tex]v = \pi \: r {}^{2} h[/tex]

v = ?

r = 4 cm

h = 9 cm

[tex]v = \frac{22}{7} \times 4 {}^{2} \times 9[/tex]

[tex]v = \frac{22}{7} \times 16 \times 9[/tex]

[tex]v = \frac{3168}{7} [/tex]

[tex]v = 452.57 \: cm {}^{3} [/tex]

if this helped pls give brainliest

Your answer would be ten times the ingredients it would take to make ONE pancake.

What kind of question is this?

Answer:

1485

Step-by-step explanation:

sorry if im wrong

Using the normal distribution, it is found that:

1. 85% of NBA players are taller than Greg.

2. 15% are shorter.

3. A height of 6'11'' would be needed.

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

In this problem:

Item 1:

The proportion is one subtracted by the p-value of Z, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{75 - 79}{3.9}[/tex]

[tex]Z = -1.03[/tex]

[tex]Z = -1.03[/tex] has a p-value of 0.15

1 - 0.15 = 0.85.

85% of NBA players are taller than Greg.

Item 2:

100 - 85 = 15% are shorter.

Item 3:

This is X when Z has a p-value of 1 - 0.025 = 0.975, so X when Z = 1.96.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]1.96 = \frac{X - 75}{3.9}[/tex]

[tex]X - 75 = 1.96(3.9)[/tex]

[tex]X = 83[/tex]

83 = 6 x 12 + 11.

A height of 6'11'' would be needed.

More can be learned about the normal distribution at https://brainly.com/question/24663213

Answer:

x=

15

7

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

8x−

6

2

=x+12

8x+−3=x+12

8x−3=x+12

Step 2: Subtract x from both sides.

8x−3−x=x+12−x

7x−3=12

Step 3: Add 3 to both sides.

7x−3+3=12+3

7x=15

Step 4: Divide both sides by 7.

7x

7

=

15

7

x=

15

7