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
astraxan [27]
3 years ago
8

Help me with this question please

Mathematics
2 answers:
AleksandrR [38]3 years ago
6 0
15 problems is the answer
likoan [24]3 years ago
6 0
There are 15 questions worth 4 points
You might be interested in
Which function is the inverse of function f? <br> f(x)=9x^2–12
Leona [35]

Answer: D

Step-by-step explanation:

If the equation is f(x) = 9x^2 -12, you can solve for the inverse by switching the x and y like this.

x = 9y^2-12.

Then you solve for y.

x = 9y^2-12.

x+12=9y^2

y^2=(x+12)/9

y=sqrt((x+12)/9)

y=sqrt((x+12))/3 which is D

4 0
3 years ago
Rosa works in an office building with many floors.From her office she goes down 5 floors for a meeting .Then she goes up 8 floor
n200080 [17]

Answer:

11th floor

Step-by-step explanation:

So to figure out what floor Rosa's office is in, we need to declare some variables.

x = Rosa's office

down 5 floors = -5

up 8 floors = 8

down 13 floors = - 13

One major clue to find Rosa's office is that she went down 13 floors to get to the 1st floor. So let's declare that Rosa is on the first floor.

x - 5 + 8 - 13 = 1

x - 10 = 1

x = 1 + 10

x = 11

So Rosa's office is at the 11th floor of the building.

8 0
3 years ago
PLZ PLZ PLZ PLZ HELP
Arada [10]

Answer:

f(x)=x/2 +8

if x =10

10/2 +8

5+8=13

Step-by-step explanation:

option c

5 0
2 years ago
Consider the linear system of equations. y = –x + 9 y = 0.5x – 6 If the solution is (a,–1), what is a? a =
Nadusha1986 [10]

Answer:

The value of a is 10.

Step-by-step explanation:

We are given with the following pair of the linear system of equations below;

y = -x+9  and   y = 0.5x-6.

Also, the solution is given as (a, -1).

To find the value of 'a', we have to substitute the solution in the equation because it is stated that (a, -1) is the solution of the given two equations.

So, the x coordinate value of the solution is a and the y coordinate value of the solution is (-1).

First, taking the equation;

y = -x+9

Put the value of x = a and y = -1;

(-1) = -(a) + 9

a = 9 + 1 = 10

Now, taking the second equation;

y = 0.5x-6

Put the value of x = a and y = -1;

(-1) = 0.5(a)-6

0.5a = 6 - 1

0.5a = 5

a=\frac{5}{0.5}

a = 10

Since we get the value of a = 10 from the equations, so the value of a is 10.

8 0
3 years ago
a train travelling at 60 km per hour completes the journey in 8 hour. How much faster would it have to travel to cover the same
antiseptic1488 [7]

Answer:

Total distance covered: 60x8 = 480

Speed needed to cover distance of 480 km in 6 hrs = 480/6 = 80 km/hr.

initial velocity : 60 km/hr.

Train needs to run faster with speed of 20km per hour to achieve same distance in 6 hrs.

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Why did donald trump take a hump on a speed bump
    5·2 answers
  • Which is true about the polynomial –3xy2 + 5x2y?
    12·2 answers
  • What is the distance between P(0,4) and Q(3,0)
    14·2 answers
  • Please help me with this problem
    11·1 answer
  • What is 1/5-3/4 help me please i need to step up my grade just a little to get 100%
    15·1 answer
  • The graph of y = f(x) has the line x = 5 as an axis of symmetry. The graph also passes through the point (8,-7). Find another po
    5·1 answer
  • Complete the Square<br> Rewrite into Vertex Form by completing the square.<br><br> 2x^2+ 20x – 1
    14·1 answer
  • Rewrite the expression in the form k times y^n<br><br> 3y^-4/3 x 2 times the cubed root of y
    14·1 answer
  • A person throws a ball and it unfortunately gets stuck on top of a building. The building is 64.2 feet tall, and he will have to
    12·1 answer
  • Please help me with this problem!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!