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
denpristay [2]
3 years ago
8

What is the value of the expression 15x - 4y when x = 2 and y = 6

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
6 0

Answer:

6

Step-by-step explanation:

(15 \times 2) - (4 \times 6) = 30 - 24 = 6

please like and Mark as brainliest

You might be interested in
The function h(t) = -16t^2 + 16t represents the height (in feet) of a horse (t) seconds after it jumps during a steeplechase.
Vladimir79 [104]
A.) To find the maximum height, we can take the derivative of h(t). This will give us the rate at which the horse jumps (velocity) at time t.

h'(t) = -32t + 16

When the horse reaches its maximum height, its position on h(t) will be at the top of the parabola. The slope at this point will be zero because the line tangent to the peak of a parabola is a horizontal line. By setting h'(t) equal to 0, we can find the critical numbers which will be the maximum and minimum t values.

-32t + 16 = 0

-32t = -16

t = 0.5 seconds

b.) To find out if the horse can clear a fence that is 3.5 feet tall, we can plug 0.5 in for t in h(t) and solve for the maximum height.

h(0.5) = -16(0.5)^2 + 16(-0.5) = 4 feet

If 4 is the maximum height the horse can jump, then yes, it can clear a 3.5 foot tall fence.

c.) We know that the horse is in the air whenever h(t) is greater than 0. 

-16t^2 + 16t = 0

-16t(t-1)=0

t = 0 and 1

So if the horse is on the ground at t = 0 and t = 1, then we know it was in the air for 1 second.
7 0
3 years ago
Not sure about this please help!!!
harina [27]

Answer:

i think its the last one

Step-by-step explanation:

as 15 - 3 is 12 and then the 7

hope this helps

i would appreciate it if u can heart and like my answer and maybe even give it 5 stars or brainliest pls i beg u thx !!! : )

8 0
2 years ago
I just need to know the blanks
iris [78.8K]

Answer:

D, supplementary, BC, D

Step-by-step explanation:

5 0
3 years ago
What is the range of the cluster in the scatter plot?
mestny [16]
I think that it is C
3 0
3 years ago
Read 2 more answers
Why don't negative values of h and t make sense?
Anni [7]
It really depends what you're understanding or how the problem is set up.
5 0
3 years ago
Other questions:
  • How to write 293,805 in standard and expanded form
    13·1 answer
  • How do you graph x-2y=4 And 2x+y=-7 system of equations
    8·1 answer
  • If you save $3,000 at an interest rate of 14 percent per year, how much will you have at the end of six years? The interest shou
    12·1 answer
  • The number of patients treated at Dr. Martin's dentist office each day was recorded for nine days. These are the data: 6, 6, 6,
    10·1 answer
  • Convert 28/50to a percent
    7·1 answer
  • I need help to solve this question pls
    10·1 answer
  • 2
    6·1 answer
  • A factory makes rectangular sheets of cardboard, each with an area of 2 1 2square feet. Each sheet of cardboard can be cut into
    7·1 answer
  • Nate wants to visit his friend Mac before going to the park. Nates house is located at (-2,4) while the park is located at (10,2
    12·1 answer
  • What is the pattern in the values as the exponents increase?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!