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
diamong [38]
3 years ago
13

Evaluate 7r-15/8 when r=3 and 8=5​

Mathematics
2 answers:
Natali [406]3 years ago
8 0

Answer:

18

Step-by-step explanation:

multiply 7 and 3

reduce 15/5 to 3

subtract 21-3

18

statuscvo [17]3 years ago
6 0

Answer:

18

Explanation:

7(3)-15/5

21-15/5

21-3=18

You might be interested in
Find an equation for a tangent plane z=e-x2-y2 at the point (0,0,1).
Nadya [2.5K]

Answer: equation of the tangent plane is z = 1

Step-by-step explanation:

Given equation

z = e^(-x²-y²) at point (0,0,1)

now let z = f(x,y)

Δf(x,y) = [ fx, fy ]

= (-2xe^(-x²-y²)), (-2ye^(-x²-y²))

now

Δf (0,0) = [ 0, 0 ] = [ a, b ]

equation of the tangent plane therefore will be

z - z₀ = a(x-x₀) + b(y-y₀)

z - 1 = 0(x-0) + 0(y-0)

z - 1 = 0 + 0

z = 1

Therefore equation of the tangent plane is z = 1

7 0
3 years ago
the price of an item has been reduced by 40% the original price was $15 what is the price of the item now​
harkovskaia [24]
This answer would be 21 because you’d just do 15 increased by 40% which gave me 21
3 0
3 years ago
Help help help please
torisob [31]
Answers:
The length of XY is 4
The length of ZW is 6

Because we don't get the same length (for XY and ZW), this means that the segments are not congruent.

-------------------------------------------------------------

To find the length of segment XY, you can count the number of spaces between -7 and -3 to get 4 units. Or you can subtract and use the absolute value notation to ensure the result is positive

|-7-(-3)| = |-7+3| = |-4| = 4

Do the same for segment ZW. 
|2-8| = |-6| = 6


7 0
3 years ago
The opposite of 5x and 5x+8?
lara31 [8.8K]

the opposite or addictive increase of 5x is -5x.

the opposite or addictive increase of 5x + 8 is -5x -8.

7 0
3 years ago
Read 2 more answers
What is the value of x?<br> 6<br> 7<br> 8<br> 9
Dennis_Churaev [7]

Answer:

7

Step-by-step explanation:

on edg

5 0
3 years ago
Read 2 more answers
Other questions:
  • In which quadrants is the ordinate positive?<br><br> 1.I and II<br> 2.II and III<br> 3.I and IV
    9·2 answers
  • Evaluate f(x) =1/3x for x = 4.
    5·2 answers
  • A blend uses 90 ounces of Kenyan tea, and 125 ounces of Darjeeling tea.
    14·1 answer
  • A child is 2-1/2 feet tall.the child mother is twice as tall as the child.
    8·2 answers
  •         Three single-digit numbers multiply to make 504          Write the missing numbers
    10·2 answers
  • What is the measurement of angle F?
    5·1 answer
  • PLEASE HELP MEEE IM DUM
    6·2 answers
  • A regular square pyramid has a slant height of 5 in and a base area of 49 in2. Find the surface area of the pyramid. -----------
    7·1 answer
  • Need help with math last question
    15·1 answer
  • Hello people who are good at math pls help me. ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!