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grigory [225]
2 years ago
7

A train takes 1 hour to travel 75 miles. How long will it take the train to travel 450 miles?

Mathematics
2 answers:
erastovalidia [21]2 years ago
6 0

Answer:

6 hours

Step-by-step explanation:

Divide 450 by 75 (450÷75)

djyliett [7]2 years ago
4 0

Answer:

6

Step-by-step explanation:

450/75= 6 hours

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Form an equation whose roots are 1/2 and -1/3.
tensa zangetsu [6.8K]
Well a root means that y will equal zero when x is that root number. we are given the roots. So when x = 1/2 or -1/3 then y = 0.

it has to be quadratic with an x^2 since it has 2 roots. So we will write basic formula

y = (x + a) (x + b)

in this basic quadratic the opposite of a and b will be roots. this means negative a and negative b are roots or -a and -b are roots.

so we can fill in our roots for a and b if we want but.remember we.have to use the opposite of.our roots because we.use -a and -b.

so let's fill in our opposite.roots for.a and.b

y = (x + (-1/2)) (x + (-(-1/3)))

since I have two negatives in front of the 1/3 it becomes positive.. So

y = (x - 1/2)(x + 1/3)

this is an equation with those roots. You can multiply it out if necessary.

y = x^2 - 1/6x - 1/6

I think that's what it comes out to.

7 0
3 years ago
Read 2 more answers
A large set of data was collected and analyzed for the majors of college seniors in the US From the scatter plots produced the f
algol [13]

Using linear function concepts, it is found that the correct statements are given by:

  • The number of biology degrees increases by about 2,414 each year after 2000.
  • About 73,000 students graduated with degrees in psychology in 2000.
  • In 2000, more students graduated with psychology degrees than biology degrees.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value.

In this problem, the number of college seniors who graduated with a bachelor's degree in psychology, in t years after 2000, is modeled by:

P(t) = 2,376t + 73,219.

For biology, the amount is given by:

B(t) = 2,414t + 56,545.

Then, the true statements are given by:

  • The number of biology degrees increases by about 2,414 each year after 2000.
  • About 73,000 students graduated with degrees in psychology in 2000.
  • In 2000, more students graduated with psychology degrees than biology degrees.

More can be learned about linear function concepts at brainly.com/question/24808124

8 0
2 years ago
How do you factorise 3x²-x​
never [62]

Answer:

x(3x-1)

Step-by-step explanation:

take the similar ones out

4 0
3 years ago
A quadratic function has one zero (x-intercept) at x = -5 and another zero at x = 3. What is the equation of the axis of symmetr
liraira [26]

Answer:

x = - 1

Step-by-step explanation:

The axis of symmetry is a vertical line located at the midpoint of the zeros.

Equation is then

x = \frac{-5+3}{2} = \frac{-2}{2} = - 1 , that is x = - 1

8 0
3 years ago
Please help I wanna get an a :(
kramer

Answer:

Graph C

Step-by-step explanation:

Point T is located on Graph C at T(1, 7). To help, (x, y) = count over however many spaces <u>horizontally</u>, then count however many spaces <u>vertically</u>.

<em>It will always be this way.</em>

4 0
3 years ago
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