1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pani-rosa [81]
3 years ago
11

This is what I need help with​

Mathematics
1 answer:
Lesechka [4]3 years ago
4 0

Answer:

well thats high school stuff so pay attention in ur classes.

Step-by-step explanation:

You might be interested in
Tobin is solving the equation 3 (x minus 1.25) = 11.25. His work is shown below.
Bezzdna [24]

Answer:

tobin should have divided by three

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
What is the y-value of the vertex of 4x^+ 8x - 8?
deff fn [24]

Answer: The y-value of the vertex is

Step-by-step explanation: we know that

The equation of a vertical parabola into vertex form is equal to

where

(h,k) is the vertex of the parabola

In this problem we have

-----> this a vertical parabola open upward

Convert to vertex form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

Factor the leading coefficient

Complete the square. Remember to balance the equation by adding the same constants to each side

Rewrite as perfect squares

The vertex is the point

The y-value of the vertex is

5 0
2 years ago
Which graph represents a function?<br> 2<br> 1<br> 23<br> 23<br> 2 3 4 5
Andrej [43]

Answer:

D, the graph in the bottom row, on the right side

Step-by-step explanation:

A function will not have repeating x values, and the graph on the bottom right is the only that passes the vertical line test(meaning there are no repeating x values).

6 0
3 years ago
Read 2 more answers
Cual es el 5% de 6000
bagirrra123 [75]

Answer:

Explanation:

I hope you understand this

6 0
3 years ago
Read 2 more answers
It takes a train 60 seconds to completely drive through a bridge of 1260 m, and 90 seconds to completely drive through a tunnel
Olegator [25]

The length of train is 120 meters

The speed of train is 25 meter per second

<u><em>Solution:</em></u>

The speed is given by formula:

speed = \frac{distance}{time}

Given that,

It takes a train 60 seconds to completely drive through a bridge of 1260 m

And 90 seconds to completely drive through a tunnel of 2010 m

Let the length of the train be "x"

<em><u>The total distance travelled by the train across the bridge is given by:</u></em>

total distance = x + 1260 + x = 2x + 1260

[ here we use x + x to represent that train completely drives through bridge ]

The time taken is given as 60 seconds

<em><u>Therefore, the speed is given as:</u></em>

speed = \frac{2x+ 1260}{60}

<em><u>The total distance travelled by the train through the tunnel is given by:</u></em>

total distance = x + 2010 + x = 2x + 2010

The time taken is given as 90 seconds

<em><u>Therefore, the speed is given as:</u></em>

speed = \frac{2x+ 2010}{90}

The speed of the train was the same in both cases.

Equate both speeds

\frac{2x+ 1260}{60} = \frac{2x+ 2010}{90}

\frac{x+630}{30} = \frac{x+1005}{45}

45(x+630) = 30(x+1005)\\\\45x + 28350 = 30x + 30150\\\\45x - 30x = 30150 - 28350\\\\15x = 1800\\\\x = 120

Thus length of train is 120 meters

<em><u>Find the speed of train:</u></em>

speed = \frac{2x+ 1260}{60}\\\\speed = \frac{2(120) + 1260)}{60}\\\\speed = 25

Thus speed of train is 25 meter per second

5 0
3 years ago
Other questions:
  • Can someone please help me with this
    10·1 answer
  • Sonya found that x = StartFraction negative 4 Over 3 EndFraction is one solution of (6x + 4)2 = . The other solution is x = .
    16·2 answers
  • How to do double sided equations
    12·1 answer
  • Find the difference: 9x2 − 24x2
    6·1 answer
  • Together maria and serena have $1.20 they want to share the money equally how much money will each girl get
    12·1 answer
  • Please help. Find the product or quotient in simplified form. Explain how to multiply and divide fractions.
    12·1 answer
  • Plz help, this is for a quiz, <br><br> 32 + (5 − 2) ⋅ 4 − 6 over 3
    12·2 answers
  • Divide £60 in a ratio of 2:1
    9·2 answers
  • 2 hours of tv had 40 commercials __ __commercials per hour (Ratio/Rate)
    8·1 answer
  • Which table represents a linear function?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!