we are told 5 miles is 8km. Convert 12.5miles to km

So x=6/5 and y=-2.8

place the values of x on the equation and you will find y as -2.8

9514 1404 393

Answer:

Step-by-step explanation:

A parabola that opens downward has a second derivative that is negative everywhere. The interval of negative concavity is 'all real numbers', (-∞, ∞). There is no interval of positive concavity.

Answer:

0.0002

Step-by-step explanation:

Answer:

0.0002

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

To  find the mean you add all the numbers together then divide by the total of number so 5

The reciprocal of 1/5 is 5.

Reciprocals are numbers than when multiplied equal a product of 1.  In this question, 1/5 * 5 = 1.  An easy trick for finding reciprocals is flipping a fraction.

Hope this helps!!

need a brainliest for this answer.. it took long to do.

Given:

11. [tex]\Delta DCB\cong \Delta CDM[/tex]

13. [tex]\Delta CBA\cong \Delta STA[/tex]

To find:

The missing values to complete the congruence statements:

11. [tex]\overline{BD}\cong \_\_\_\_\_[/tex]

13. [tex]\angle BAC\cong \_\_\_\_\_[/tex]

Solution:

11.

We have,

[tex]\Delta DCB\cong \Delta CDM[/tex]

Here, vertices D, C, B are corresponding to C, D, M. So,

[tex]\overline{BD}\cong \overline{MC}[/tex]

Therefore, the complete statement is [tex]\overline{BD}\cong \overline{MC}[/tex].

13.

We have,

[tex]\Delta CBA\cong \Delta STA[/tex]

Here, vertices C, B, A are corresponding to S, T, A. So,

[tex]\angle BAC\cong \angle TAS[/tex]

Therefore, the complete statement is [tex]\angle BAC\cong \angle TAS[/tex].

Answer:

If you need the explanation, just ask.

Answer:

23x+18  or 313

Step-by-step explanation:

Answer:

Q No 33: After solving c-1 we get the answer : 11

Q No 47: a) Money earned for mowing 1 lawns = 15 dollars

b) Money earned for mowing 7 lawns = 105 dollars

Step-by-step explanation:

Question No 33

We are given: a=3, b=2 and c=12

We need to evaluate c-1

It can be solve by placing the value of c, given in question and then subtract 1 from it.

We are given:

[tex]c-1\\Put\:c=12\\=12-1\\=11[/tex]

So, after solving c-1 we get the answer : 11

Question No 47

You can earn 15n dollars for mowing n lawns. How much do you earn for mowing 1 lawn? 7 lawn?

Money earned for mowing n lawns = 15 n

Money earned for mowing 1 lawn:

Put n = 1 in the equation:

[tex]15 n\\=15(1)\\=15[/tex]

So, Money earned for mowing 1 lawns = 15 dollars

Money earned for mowing 7 lawn:

Put n = 7 in the equation:

[tex]15 n\\=15(7)\\=105[/tex]

So, Money earned for mowing 7 lawns = 105 dollars

Answer:

y = 3√14 unit

... . . . ... . .

I hope it helps you

:-))

Answer:

-64

Step-by-step explanation:

Answer:

the answer is -64                                                        

Answer:

The Answer Will Be 45 SQ. CM

Step-by-step explanation:

Answer:

$1489.10

Step-by-step explanation:

1668.93 x 0.07 - 65

Tax = 116.83

1668.93 - 116.83 - 63

Answer = $1489.10

Answer:

b

Step-by-step explanation:

Answer:

(2y * 2y) * (2y * 2y) * (2y * 2y)

Step-by-step explanation:

Answer:

Step-by-step explanation:

First, the RS is perpendicular to TW. That is paired with "Given".

Then arc mTR = arc mRW. This is paired with, "Diameter perpendicular to a chord bisects major arcs".

After that, chord TR = chord RW. You'll pair this up with "If arcs are =, chords are =".

Finally you'll pair Triangle TRW is isosceles with "Definition".

RS perpindicular TW       Given

m RT= m RW                     Diameter perpindicular to chord bisects major arcs

TR = TW                             If arcs are =, chords are =

TRW is issocolees            Definition

Answer:

a pie graph shows frequences in categories as sectors of a whole.

Explanation:

a pie graph / chart is a circle divided into sectors. Each sector represents a category of data. The area of each sector is proportional to the frequency of the category.

Answer:

A Circle Graph

Step-by-step explanation:

A Circle Graph would be like a pie chart but the correct name is a CIrcle Graph

Answer:

x = 39

y = 39

since the sides are congruent the angles are also equal.

Answer:

First Column: 8

Third Column: 24

Fourth Column: 4

Fifth Column (from top to bottom): 32; 0

This means that:

[tex](3x^3-25x^2+12x-32)\div (x-8)=3x^2-x+4[/tex]

Step-by-step explanation:

We can perform synthetic division when we divide a polynomial P(x) by a binomial in the form of (x - a).

When doing so, the number that goes to the very left of our structure will be the constant a.

We fill the first row with the coefficients of each term.

We are dividing [tex]3x^3-25x^2+12x-32[/tex] by [tex]x-8[/tex].

So, a = 8.

Therefore, for the first column, the number there is 8.

The second column has been filled out.

For the third column, we multiply the previous number by our a.

The previous number is 3. 3(8) is 24.

So, the number in the third column is 24.

(And we add 24 to -25 to acquire -1).

So, for the fourth column, we will add the two numbers to acquire (12 - 8) = 4.

Hence, the number for the fourth column is 4.

For the fifth column, the top box, it will again be the previous number multiplied by our a.

The previous number is 4. 4(8) is 32.

So, the number in the top box of the fifth column is 32.

And when added to -32, it equates to 0. Hence, the second box of the fifth column is 0.

This means that:

[tex](3x^3-25x^2+12x-32)\div (x-8)=3x^2-x+4[/tex]

Answer:

[tex] \frac{(3 {x}^{3} - 25 {x}^{2} + 12x - 32)}{(x - 8)} = (3 {x}^{2} - x + 4)\\[/tex]

No, modern train cannot travel on old railroad.

Step-by-step explanation:

In rail transport, track gauge is the spacing of the rails on a railway track and is measured between the inner faces of the load-bearing rails.

Most of the modern train are based on broad gauge. The separation in broad gauge is about 5 ft and 6 inches and in the standard gauge the separation between the tracks is 4 ft and  inches. So for the modern train it is not possible to travel on the tracks whose separation is no more than 4.5 feet.

Answer:

Bro it is not so clear ........

Answer:

Mean=2.1

Median=2

Mode=1,2, and 3

Range=5

Step-by-step explanation:

Mean is all the numbers added up and then divided by the amount of numbers there are, so 0+1+0+2+3+1+3+5+4+2=21, and then 21 divided by 10=2.1

Median is lining all the numbers up least to greatest and then finding the middle number, which is 2.

Mode is the number that appears the most, and since 1,2,3 all appeared twice in the data, they are the mode.

Range is the highest number in the data subtracted by the lowest number in the data, so 5-0=0

(hope this helps!)

Answer:

12.5 km/hr

Step-by-step explanation:

An hour is 60 minutes.

So 15km/72min = x km/60min

15*60 = 72*x

x = 12.5

Answer:

12.5 km/hr

Step-by-step explanation:

If he runs 15km in 72minutes,

15km/72min = .208333 km per minute

there are 60 minutes in a hour

.208333 km/min * 60min/hr = 12.5 km/hr

Answer:

We conclude that:

[tex]\mathrm{Domain\:of\:}\:-720t+3600\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:<t<\infty \\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}[/tex]

Please also check the attached graph.

Step-by-step explanation:

Given

Given the function

[tex]y=-720t\:+\:3600[/tex]

To determine

What is the domain of the function y=-720t + 3600

We know that the domain of the function is the set of input argument values for which the function is real and defined.

Given the function

[tex]y=-720t\:+\:3600[/tex]

From the given function, it is clear that the function has no undefined points nor domain constraints.

Therefore, the domain of the function is

[tex]-\infty \:<t<\infty \:[/tex]

Thus, we conclude that:

[tex]\mathrm{Domain\:of\:}\:-720t+3600\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:<t<\infty \\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}[/tex]

Please also check the attached graph.

The question is incomplete, here is the complete question:

The half-life of a certain radioactive substance is 46 days. There are 12.6 g present initially.

When will there be less than 1 g remaining?

Answer: The time required for a radioactive substance to remain less than 1 gram is 168.27 days.

Step-by-step explanation:

All radioactive decay processes follow first order reaction.

To calculate the rate constant by given half life of the reaction, we use the equation:

[tex]k=\frac{0.693}{t_{1/2}}[/tex]

where,

[tex]t_{1/2}[/tex] = half life period of the reaction = 46 days

k = rate constant = ?

Putting values in above equation, we get:

[tex]k=\frac{0.693}{46days}\\\\k=0.01506days^{-1}[/tex]

The formula used to calculate the time period for a first order reaction follows:

[tex]t=\frac{2.303}{k}\log \frac{a}{(a-x)}[/tex]

where,

k = rate constant = [tex]0.01506days^{-1}[/tex]

t = time period = ? days

a = initial concentration of the reactant = 12.6 g

a - x = concentration of reactant left after time 't' = 1 g

Putting values in above equation, we get:

[tex]t=\frac{2.303}{0.01506days^{-1}}\log \frac{12.6g}{1g}\\\\t=168.27days[/tex]

Hence, the time required for a radioactive substance to remain less than 1 gram is 168.27 days.