could someone please help me with my math? i really need help and i am struggling

https://brainly.com/question/20134003

Answer:

0.5 hours

Step-by-step explanation:

Given that Tara has covered 0.50 miles and  rides with a speed of 10 miles/hour. Felipe has  covered bike 0.25 miles and rides with a speed of 15  miles/hour.

Tara has covered more distance while the speed of Felipe is more than the speed of Tara.

Assuming that in time t hour, Felipe reaches Tara, then Tara left behind as Felipe has faster speed.

So, after t hour, Felipe will be ahead of Tara and Tara will cover lesser miles than Felipe .

As distance = speed x time, so

So, the distance covered by Tara in [tex]t[/tex] hour = 10t miles and she already has covered 0.5 miles, so total distance covered by Tara [tex]= 0.5+10t[/tex] miles.

Similarly, the distance covered by Felipe in [tex]t[/tex] hour = 15t miles and he already has covered 0.25 miles, so the total distance covered by Tara [tex]= 0.25+15t[/tex] miles.

Therefore, at the time then Felipe reached Tara, both have covered the same distance, i.e

[tex]0.25+15t=0.5+10t \\\\\Rightarrow 15t-10t=0.5-0.25 \\\\\Rightarrow 5t=0.25 \\\\[/tex]

[tex]\Rightarrow t= 0.25/5=0.5[/tex] hour

Hence, after 0.5 hours Tara will cover lesser miles than Felipe .

Answer:

0.5 hours

Step-by-step explanation:

Answer:

i think 1h but wait for someone else to answer to

Answer:

After 43 minutes, the bacteria will be 40 remainings.

Step-by-step explanation:

Given that:

Initial population of bacteria [tex]A_o[/tex] = 800

After time (t) = 18 mins

A = 240

Using the model:

[tex]A = A_o e^{k*t}[/tex]

[tex]240=800 e^{k*18}[/tex]

[tex]\dfrac{240}{800}= e^{18k}[/tex]

[tex]0.3= e^{18k}[/tex]

By applying natural log on both sides, we get:

In(0,3) = 18k (In e)

- 1.20397 = 18 k * (1)

18 k = -1.20397

k =  -1.20397/ 18

k = - 0.06688

k ≅ -0.07

After time (t), the bacteria population (A) = 40

Now;

[tex]40 = 800 e^{k*t}[/tex]

[tex]\dfrac{40 }{800}= e^{-0.07*t}[/tex]

[tex]0.05= e^{-0.07*t}[/tex]

In (0.05) = -0.07t * In (e)

- 2.9957 = - 0.07t

t = - 2.9957/ -0.07

t = 42.795

t ≅ 43 minutes

Thus, after 43 minutes, the bacteria will be 40 remainings.

Answer:

y= -6x-4

Step-by-step explanation:

As two lines are parallel, their slope is same which is -6

Now, use:y-y1=m(x-x1)

y-(-4)= -6(x-0) (y1=-4,x1=0, cause the equation of y axis is x=0)

So,y= -6x-4

Answer:

See below

Step-by-step explanation:

1. Translation = (3 - 2, - 4 + 3) = (1, - 1)

2. Reflection over x axis = (3, 4)

3. Reflection over y axis = (-3, - 4)

4. Rotation 90° clockwise = (4, 3)

5. Rotation 180° counter clockwise = (-3, 4)

6. Dialation of 3 = (3*3, - 4*3) = (9, - 12)

Answer:

B

Step-by-step explanation:

x intercepts is (- 1/2,0)

y intercepts is (0,2)

Answer: 9 1/3%

Step-by-step explanation:

Answer:

KL = 40.5

Step-by-step explanation:

From the information given in the diagram, P is the centroid of the triangle. Therefore, applying the centroid theorem,

⅔ of KL = LP

LP = 27

Plug in the value of LP

⅔(KL) = 27

Multiply both sides by 3

2(KL) = 3*27

2(KL) = 81

Divide both sides by 2

KL = 81/2

KL = 40.5

Answer:

puedes multiplicar 3 y 243 (you can multiply 3 and 243)

Step-by-step explanation:

espero que esto ayude (hope this helps) :)

hay muchas combinaciones, supongo que se puede elegir sólo una respuesta

1 x 729

3 x 243

9 x 81

27 x 27

81 x 9

Hope this helps! Enjoy your day!

Answer:

about 50

Step-by-step explanation:

they a move up 5 minutes eace half mile

dont come at me if it is wrong :)

Answer:

if an input produces more than one output, the table does not represent a function. In this case, table D is not a function. the x value 0 has three different output values, -1, 4, and 6; the input 2 also has three different output values.

Answer:

number 5 , 10, 15, and 20 could be in his group which is a total of 4 classmates. If Jake's number wasn't a multiple of 5 then there would be 5 classmates.

Answer is most likely 4 classmates!

Step-by-step explanation:

Well we just need to know all the multiples of 5 in between 1 and 24 so we can start counting

5

10

15

20

25 - Bigger than the range

This means that the number 5 , 10, 15, and 20 could be in his group which is a total of 4 classmates. If Jake's number wasn't a multiple of 5 then there would be 5 classmates

Hope this Helps!!! :)

Let me know if I should change anything or if the answer was perfect!!!

Answer:

Yes it is

Step-by-step explanation:

The equation is proportional since as the value of x is increasing, y is also increasing

Equations can either be direct, inverse, or even joint. For instance, if y is directly proportional to x, this is expressed as:

y = kx

k is the variation constant

For a proportional equation, there an increase in a variable will lead to a decrease or increase in other variables

Given the expression y = 9x + 1/2,

when x = 1

y = 9(1) + 1/2

y = 9.5

when x = 2

y = 9(2) + 1/2

y = 18.5

We can see that the equation is proportional since as the value of x is increasing, y is also increasing

Learn more here: https://brainly.com/question/21284698

And.. what about the cordnaites?

Answer:

D

Step-by-step explanation:

Notice how it goes down one unit and right one unit. Thats how you get the slope (-x) and then then the +9 is the intercept of the y-axis which you can see is where the graph is starting here.

Answer:

it c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer: It is constant

Answer:

Constant.

Step-by-step explanation:

Constants are any number that does not have a variable such as x or y, so if they do not have variables, there definitely would not have coefficients. Examples of constants are 2, 5 and 67.

Coefficients are like the 2 in 2x, the 5 in 5y and the 67 in 67xy. All of these numbers have a variable.

Answer:

she is charged 460 dollars because she has to pay 20$ each year she doesnt pay

Step-by-step explanation:

Answer:

she is charged 460 dollars because she has to pay 20$ each year she doesnt pay

Step-by-step explanation:

she is charged 460 dollars because she has to pay 20$ each year she doesnt pay

Answer:

obtuse triangle because the angle is larger than 90 degrees.

Step-by-step explanation:

Answer:

obtuse

Step-by-step explanation:

Step-by-step explanation: It is gradually going up in numbers going down.

From 1 to 10 is 9

From 10 to 18 is 8

From 18 to 25 is 7

So from 25 to 31 is 6.

Hope this helps you! ;)

Answer:

31

Step-by-step explanation:

You add 9, then 8, and so on

Answer:

1) A

2)C

3)B

4)D

Step-by-step explanation:

PLEASE MARK ME AS BRAINLIEST

Answer:

will it be b

Step-by-step explanation:

Answer:

Step-by-step explanation:

5x + 40x + 40x + 31 = x + 7

85x + 31 = x + 7

Bringing like terms on one side

85x - x = 7 - 31

84x = - 24

x = - 24/84 = 2/7

Answer:

A is the correct answer

Step-by-step explanation:

Mathematically if we have lengths a, b and c

For a triangle to occur, let us say that the third side is c

then a + b must be greater than or equal to c

Hence c must be equal to (4 + 8) or greater than (4 + 8)

With the options given , A is the correct answer

Answer:

100

Step-by-step explanation:

There are 12 5s.

12*5= 60

There are 4 10s.

10*4 = 40

60 + 40 = 100

Answer:

ANS 100

Step-by-step explanation:

THERE ARE  12 TIME 5 AND 4 TIME 10 SO THE ANSWER IS 100

Answer: it’s C

T r u s t M e ;)