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
Vikentia [17]
2 years ago
15

Evaluate the expression when r = 3. 15r

Mathematics
1 answer:
Liula [17]2 years ago
8 0

Answer:

45

Step-by-step explanation:

Because if you replace the r with 3, it would be 15(3).

15(3) is the same as 15 × 3.

15 × 3 = 45

Visit fbcinterlaken.org to learn more about God, and what He can do for you!

Please Mark as brainliest it will make my day! Thank you! :)

You might be interested in
✨✨Easy points for those who are good at math!✨✨
Vlada [557]

Answer:

B) -13/7x+5

Step-by-step explanation:

13x+7y=35

7y=-13X+35

Y=-13/7X+5

5 0
2 years ago
A rectangular parcel of land has an area of 3,000 ft2. A diagonal between opposite corners is measured to be 10 ft longer than o
Kazeer [188]

Answer:

40 ft × 75 ft

Step-by-step explanation:

Let x be the one side ( in feet ) of the rectangular parcel,

So, the diagonal between opposite corners = ( x + 10 ) feet,

Let y be the other side of the rectangle ( adjacent to side x ),

The area of the rectangle,

A = x × y,

According to the question,

A = 3000 square ft,

\implies xy = 3000\implies y=\frac{3000}{x}

∵ In a rectangle,

D^2=a^2+b^2

Where, a and b are the adjacent side of the rectangle and D is the diagonal,

(x+10)^2 = x^2 + y^2

(x+10)^2 = x^2 + \frac{9000000}{x^2}

x^2(x+10)^2 = x^4 + 9000000

x^2(x^2+100+20x) = x^4 + 9000000

x^4+100x^2 + 20x^3 = x^4 + 9000000

20x^3 + 100x^2 - 9000000=0

x^3 + 5x^2 - 450000 = 0

By graphing the equation,

We found that,

The only real zeros of the equation is at x = 75,

Hence, the one side of the rectangle = 75 ft,

And, second side = \frac{3000}{75} = 40 ft

Hence, the dimension of the land is 40 ft × 75 ft

3 0
2 years ago
Read 2 more answers
The width of the rectangle shown below is 8 inches (in.). The length is 3 feet (ft.).
Paraphin [41]

the answer about be am number one child so yeah

5 0
3 years ago
Read 2 more answers
Factor the algebraic expression -18y - 27
Tanya [424]

Answer:

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Let f(x) = 4x2 + x + 1 and g(x) = x2 – 2. Find g(f(x)). Show each step of your work.<br> Help please
STatiana [176]
For the answer to the question above, 
<span>g(f(x)) = (4x^2 + x + 1)^2 - 2 </span>

<span>g(f(x)) = (16x^4 + 4x^3 + 4x^2 + 4x^3 + x^2 + x + 4x^2 + x + 1) - 2 </span>

<span>g(f(x)) = 16x^2 + 8x^3 + 9x^2 + 2x + 1 - 2 </span>

<span>g(f(x)) = 16x^2 + 8x^3 + 9x^2 + 2x - 1
I hope my answer helped you. Feel free to ask more questions. Have a nice day!</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • The smallest variable is "a" if u cannot see it.
    14·1 answer
  • If p represents “a number is divisible by 2,” q represents “a number is odd,” and r represents “a number is even,” what does thi
    15·1 answer
  • Twenty cars pass through Intersection X in 4 minutes, 35 cars pass through Intersection Y in 5 minutes, and 36 cars pass through
    14·1 answer
  • Please help with this coin problem, include an explanation pleaasee! Thank you​
    6·2 answers
  • What is the positive difference between the square of the sum of the first five positive integers and the sum of the first five
    12·1 answer
  • I need help on this subject
    7·1 answer
  • Please help fast. I'll mark brainliest for the best answer. :)
    13·1 answer
  • Lily is redecorating her house. She needs to work out the area of the wall around her
    11·1 answer
  • I don’t get this, i already tried but i can’t get it right
    11·1 answer
  • The area of a circle is 88.44 cm² find the length of the radius rounded to 2 DP
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!