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
Kay [80]
3 years ago
11

The perimeter of an equilateral triangle is 21cm, find its length

Mathematics
2 answers:
Margarita [4]3 years ago
7 0

Answer:

7cm is the length for each side of an equalateral triangle

Talja [164]3 years ago
3 0

Answer:

7 cm

Step-by-step explanation:

An equilateral triangle has all sides equal.

To find the measure of the side, simply divide the perimeter by 3. This is because a triangle has 3 sides.

21 ÷ 3 = 7

You might be interested in
Which word in the sentence does the underlined phrase modify?
Brilliant_brown [7]
C. Writer

"for the food magazine" is modifying "writer"
Hopefully that helps! If, "for the food magazine" is no the correct underlined phrase, just message back! That's just what I think is underlined! :)
8 0
3 years ago
Please need help thank you
makvit [3.9K]

Answer:

People drank 75 cups, First find the amount of juice that Mrs. Jackson bought .Then subtract the 3 cups of juice that were left over

5 x 16=80

80-3= 77

5 0
3 years ago
In each case, determine if the function can be differentiated using the rules developed so far (sections 3.1 and 3.2). (a) y = 2
Alex_Xolod [135]
The rule for differentiation for variable with exponents has the formula:

d/dx (xⁿ) = nxⁿ⁻¹
where n is the exponent

Thus, for the given equation, the solution is as follows:
y = 2x²
dy/dx = 2(2)x²⁻¹ = <em>4x

Thus, the derived equation of the given would now be 4x.</em>
3 0
3 years ago
Why does -2(x + 3y) = 18 equal y=-3-x/3? Please helppp
Citrus2011 [14]

Step-by-step explanation:

You're asking why

{- 2(x + 3y) = 18} = y =  - 3 -  \frac{x}{3}

let's transpose the first equation for y

-2x-6y=18

-6y=18+2x

6y=-18-2x

y=-18/6-2x/6

y=-3-⅓x as required

8 0
3 years ago
Read 2 more answers
PLEASE HELP ME WITH THESE!! i will give brainliest to best answer!!!
dimaraw [331]

Answer:

1) {11}^{12}

2) {13}^{10}

3) {14}^{19}

4) {2}^{8}

5)  {7}^{14}

6) {3}^{12}

7) {17}^{16}

8) {5}^{9}

9) {16}^{6}

10) {18}^{9}

11) {9}^{14}

12) {8}^{10}

13) {12}^{13}

14) {17}^{17}

15) {5}^{6}

16) {3}^{4}

17) {19}^{12}

18) {20}^{9}

19) {4}^{7}

20) {6}^{9}

21) {10}^{15}

8 0
3 years ago
Other questions:
  • Will give Brainliest! if right!
    7·2 answers
  • Write two addition sentences where the sum is zero.
    8·1 answer
  • Two is thirty-one, divided by the sum of a number and four. Find the number.
    12·1 answer
  • 2.Draw the flip image for the shape given below.​
    6·1 answer
  • Help me plz i don't get it
    13·1 answer
  • Of the volunteers coming into a blood center, 1 in 3 have O+ blood, 1 in 15 have O-, 1 in 3 have A+, and 1 in 16 have A-. The na
    14·1 answer
  • Simplest form to write <br> (2×6)³/²
    6·1 answer
  • Solve this in an equality 8z+3-2z &lt;51
    10·1 answer
  • Which point is an x-intercept of the quadratic function f(x)=(x-4)(x+2)
    13·1 answer
  • Find the volume of the prism.<br> 3 ft<br> 7 ft<br> 5 ft
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!