Plz answer will give brainliest if correct

Answer:

Step-by-step explanation:

(a)

well since they can lay 7 miles of track every day, the formula i make for the amount of track there is left to lay is:

L=196-Ld

where l is the length of track remaining, L is the length of track they can lay in one day and d is the number of days.

so we replace L for 7 and d for 17 and we get:

L=196-7x17

which works out to be 77 miles of track remaining to lay.

(b)

well since we want them to have 0 length of track remaining, and they can lay 7 miles of track a day, we can work out d. let's give the formula a bash to get:

d=196-l/L

we then replace l with 0 and L with 7 and get:

d=196/7

which works out to be 28. so it will take 28 days or 4 weeks for the railroad crew to lay 196 miles of track.

Answer:

Burger = $15

Hot Dog = $10

Step-by-step explanation:

b=35-2h

4(b-2h)+6h=120

4(35-2h)+6h=120

140-8h+6h=120

140-2h=120

-2h=120-140

-2h=-20

h=10

b=35-2h = 35-20 = 15

Answer:

nothing times 3 is 35 so your sum cant equal 37

Step-by-step explanation:

hope this helps in some way

Answer:

C.) One mile

Step-by-step explanation:

9/10 ain less than 1/4

9/10 is wayyy more than 1/2

9/10 ain even one mile so how could it be more than a mile?

Answer:

Triangular prism

Step-by-step explanation:

Answer:

its 10

Step-by-step explanation:

10/3 divided by 2/6 is 10 because you would reciprical the 2/6

then it would be 10/3 times 6/2

10 times 6 is 60

3 times 2 is 6

60/6 is 10

BOOM MATH

Answer:

Step-by-step explanation:

f(30) = 0.40×30 = $12

Running the computer for 30 days will cost $12 in electricity.

Answer:

g(t)= -16t^2 +80t

Step-by-step explanation:Should be

A function is a relationship between inputs where each input is related to exactly one output.

The function that can be used to describe the flight of the model rocket is

g(t) = -16t² + 80t.

A function is a relationship between inputs where each input is related to exactly one output.

Example: f(x) = 3x + 1 is a function

x = 1, f(1) = 3 + 1 = 4

We have,

A function that represents the height of an object.

g(t) = -16t² + vt + h

t = time in second

v = Initial velocity per second

h = Initial height

Initial velocity:

v = 80 feet per second

A model rocket is launched off the ground.

This means,

h = 0

Now,

Putting v = 80 and h = 0

g(t) = -16t² + vt + h

g(t) = -16t² + 80t + 0

g(t) = -16t² + 80t

Thus,

The function that can be used to describe the flight of the model rocket is

g(t) = -16t² + 80t.

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Answer:

Prime number: A prime number has factor of only 1 and itself.

Ex: 3: 1 and 3 are the only ways to compose 3.

A whole number that has factors other than 1 and itself is called a composite number.

Ex: 8: the factors of 8 include 1,2,4,8

Circle 5,7,2,19,3,11

Box 18,20,22,16,15,30,26,38,45,10,21,6,14

To determine the prime factorization of a number, you must break down a number into its factors. (im not sure?)

Continute until all of the factors are (im not sure)

Prime factorization is written exponential form (im not quite sure)

30= 2x3x5

30= 2^1 3^1 5^1

24=2 × 2 × 2 × 3

24= 2^3 x 3

sorry idrk if they are all right

Answer:

Xy-3x

Putting the values of x and y into the expression,

We have 4(5)-3(4)

20-12

8

Answer:

x=-3 y=-1

Step-by-step explanation:

The solution is

The value of x = -3

The value of y = -1

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the first equation be = A

Now , the value of A is

x - 4y = 1   be equation (1)

Let the first equation be = B

Now , the value of B is

3x + 2y = -11   be equation (2)

Now , on simplifying both equations , we get

Multiply equation (1) by 3 , we get

3x - 12y = 3   be equation (3)

Subtracting equation (2) from equation (3) , we get

-12y - 2y = 3 - ( -11 )

-14y = 14

Divide by -14 on both sides of the equation , we get

y = -1

So , the value of y = -1

Substitute the value of y in equation (1) , we get

x - 4y = 1

x - 4 ( -1 ) = 1

x + 4 = 1

Subtracting 4 on both sides of the equation , we get

x = -3

So , the value of x = -3

Hence , the value of x is -3 and value of y is -1

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Answer

x/3 and 2 1/3

Step-by-step explanation:

Answer:

its a three out of seven then it stays the same

Step-by-step explanation:

Answer:

The answer is 12.044*10^23 molecules of H2O

Answer:

Step-by-step explanation:

y - 6 = 5(x + 8)

y - 6 = 5x + 40

y = 5x + 46

Answer:

40.72units^2

Step-by-step explanation:

Given data

Radius= 3.6 units

The area is given as

A=πr^2

substitute

A=3.142*3.6^2

A=3.142*12.96

A=40.72units^2

Hence the area is 40.72units^2

Answer:

The awsner is C

Step-by-step explanation:

C is the awnser

Answer:

12/5

Step-by-step explanation:

Width times Length = the area

w*5 = 12

w = 12/5

Answer:

w=2.4ft

Step-by-step explanation:

Answer:

(8-3)(-7) =8×-7=-56 (-3)×(-7)=+21

Step-by-step explanation:

then -56+21= 77

Answer:

8th floor

Step-by-step explanation:

10 - 6 = 4

4 + 4 = 8

Answer:

8 floor

Step-by-step explanation:

gfhshddhdhfhdhrbyuygtv

Answer: 6miles

Step-by-step explanation: 6miles = 31680ft so 31680>31678

Answer:

72 o de 7 y 2

Step-by-step explanation:

7: 7 y 1

2:2y1

72:1 2 3 4 5 6 8 9 12 24 36 y 72

Answer:

The circumference of the circle is approximately 94 inches.

Step-by-step explanation:

C=2(pi)r

C=2(pi)15

C=30(pi)

C=94.24

Rounded Answer: 94 inches

Answer:

answer is A. (f.g) (x) = 6x

9514 1404 393

Answer:

  2

Step-by-step explanation:

Alex has 10 money units. Annie has 5 money units. The ratio of amounts is ...

  Alex : Annie = 10 : 5 = 2 : 1

Alex has 2 times as much money as Annie.

C.) The independence of the two ice machines means that knowing how much one machine fills does not help us predict how much the other fills.