2 years ago

A high speed train travels a distance of 503 km in 3 hours.

Mathematics

1 answer:

Marta_Voda [28]2 years ago

4 0

Step-by-step explanation:

it's is 2.8 km if we round to one decimal place

You might be interested in

If g(x) = 4x^2 - 16 were shifted 5 units to the right and 2 down, what would the new equation be?

AURORKA [14]

Answer:

D. h(x) = 4(x - 5)² - 18

Step-by-step explanation:

4 0

3 years ago

Arlene Frank is saving money for her college

lora16 [44]

Can you please include a question please? Thank you

3 0

2 years ago

Read 2 more answers

.)Veronica gets her hair cut. The basic haircut is $25. The sales tax is

Sergeeva-Olga [200]

Answer:

$31.05

Step-by-step explanation:

8% of 25 is 2

25 + 2 = 27

15% of 27 is 4.05

27 + 4.05 = 31.05

$31.05 is how much she spends

8 0

2 years ago

What are all of the real roots of the following polynomial? f(x) x^4-24x^2-25

Greeley [361]

<u>Answer:</u>

x = ±5

<u>Step-by-step explanation:</u>

We are given the following polynomial function and we are to find all of its real roots:

$x^4-24x^2-25$

Let $y=x^2$ so we can now write it as:

$y^2-24y-25$

Factorizing it to get:

$(y^2+y)+(-25y-25)$

$y\left(y+1\right)-25\left(y+1\right)$

$\left ( y + 1 \right ) \left ( y - 2 5 \right)$

Substitute back $y=x^2$ to get:

$\left ( x^2 + 1 \right ) \left ( x^2 - 25 \right )$

$\left ( x^2 + 1 \right ) \left ( x + 5 \right ) \left ( x - 5 \right )$

The quadratic factor has only complex roots. Therefore, the real roots are x = ±5.

3 0

3 years ago

Read 2 more answers

Order the numbers from least to greatest. a –8, −10, 0, 5, 1, −1, 3, −6, −9, −19, 32

krek1111 [17]

Start with -19, -10, -9,-8,-6,-1,0,1,3,5,32

6 0

3 years ago

Read 2 more answers