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
borishaifa [10]
3 years ago
15

Find the perimeter. A rectangle measuring 3cm by 12cm

Mathematics
2 answers:
xz_007 [3.2K]3 years ago
8 0
The perimeter is 30 im pretty sure
Anit [1.1K]3 years ago
4 0
12+12+3+3=30. To find the perimeter, add all of the known lengths.
You might be interested in
What is the coefficient of the variable in the expression 4 − 3x − 7 + 6?
GaryK [48]
A coefficient is the number directly in front of the variable, aka the number being multiplied with the variable. In this case it's -3.
5 0
3 years ago
Read 2 more answers
3x3 1/7 which two whole number
pishuonlain [190]

Could you explain a bit more please

7 0
3 years ago
Read 2 more answers
Final question - whats the answer?
Doss [256]

Answer: 7^5 or 7 to the fifth power.

Step-by-step explanation: This is an exponent meaning you count the 7’s and in the first picture there’s 5 7’s. This means that the number your putting to a power is the yellow box so that’s 7 and the exponent is 5 not 4 because if you did 7 to the first power it’s still 7 so it would be 7 to the 5th power or 7^5

8 0
3 years ago
Which is the polynomial function of lowest degree with rational real coefficients, a leading coefficient of 3 and roots StartRoo
anastassius [24]

Answer:

a) f(x)=3x^{3}-6x^{2}-15x+30

Step-by-step explanation:

1) In this question we've been given "a", the leading coefficient. and two roots:

x_{1}=\sqrt{5}\:x_{2}=2

2) There's a theorem, called the Irrational Theorem Root that states:

If one root is in this form x'=\sqrt{a}+b  then its conjugate x''=\sqrt{a}-b. is also a root of this polynomial.

Therefore

x_3=-\sqrt{5}

3) So, applying this Theorem we can rewrite the equation, by factoring. Remembering that x is the root. Since the question wants it in this expanded form then:

f(x)=3(x-\sqrt{5})(x+\sqrt{5})(x-2)\Rightarrow 3x^{3}-6x^{2}-15x+30

4 0
3 years ago
Read 2 more answers
18 is the geometric mean between 4 and 9. <br> A.) True<br> B.) False
Mademuasel [1]
Im thinking it's false. 18 isn't even between 4 and 9.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Consider the following pair of equations: y = −2x 8 y = x − 1 Explain how you will solve the pair of equations by substitution.
    11·2 answers
  • Put 0.82, 6/5, 0.7 , 3/4 in order form from Greatest to Least
    9·2 answers
  • Find the area of a triangle with sides a=5, b=8, and c= 11
    6·1 answer
  • ?????????????????????
    7·1 answer
  • Write an equivalant expression for 5x +24 + 3x
    11·2 answers
  • Solve the system of linear equations below.
    9·1 answer
  • The value of n is a distance of 1.5 units from -2 on a number line.
    5·2 answers
  • The slope of a line is -1/3, and the y-intercept is 10/3 . What is the equation of the line written in general form?
    5·1 answer
  • Please help me I am stuck (questions are in the picture, and the marked-off section does not have to be done).
    6·1 answer
  • Resolver utilizando la regla de clamer
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!