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
Lesechka [4]
2 years ago
5

The perimeter of a

Mathematics
1 answer:
Umnica [9.8K]2 years ago
7 0

Answer:

The longest side is 16 cm

Step-by-step explanation:

x + (x + 2) + (x + 4) = 42cm \\ x + x + 2 + x + 4 = 42cm \\ 3x + 6 = 42cm \\ 3x = 36cm \\ x = 12

check and finish

12 + (12 + 2) + (12 + 4) = 42cm \\ 12 + 12 + 12 + 6 = 42 cm\\ 36 + 6 = 42cm \\ 42cm = 42cm

lengths of sides

12 + 4 = 16cm \\ 12 + 2 = 14cm \\ 12cm

You might be interested in
PLEASEEEE HELP ME ITS FOR AN IMPORTANT TEST AND I WAS NOT PAYING ATTENTION LOL
hichkok12 [17]

Answer: 3^2 * 3^8

Step-by-step explanation: 3^(4-2) * 3^(5+3)

3 0
2 years ago
Read 2 more answers
Identify the vertex, focus, and directrix. y=1/8y^2
Brut [27]
If all the equations for the directrix are "x = " lines then this is a y^2 parabola.  The actual equation is x= \frac{1}{8}y^2.  The standard form for a positive sideways-opening parabola is  (y-k)^2=4p(x-h).  We know from the equation that the vertex of the parabola is at the origin, or else the translation would be reflected within the parenthesis in the equation.  Our equation has no parenthesis to indicate movement from the origin.  The vertex is (0, 0).  Got that out of the way.  That simplifies our standard form down to  y^2=4p(x).  Let's take a look at our equation now.  It is  x= \frac{1}{8}y^2.  We could rewrite it and make it a closer match to the standard form if we multiply both sides by 8 to get rid of the fraction.  That gives us an equation that looks like this:  y^2=8x.  That means that 4p = 8, and p = 2.  p is the distance that the focus and the directrix are from the vertex.  Since this is a positive parabola, it opens up to the right.  Which means, then, that the focus is to the right of the vertex, 2 units to be exact, and the directrix is 2 units to the left of the vertex.  The formula for the focus is (h + p, k).  Our h is 0, our k is 0 and our p is 2, so the coordinates of the focus are (2, 0).  Going 2 units to the left of the origin then puts our directrix at the line x = -2.  Your choice then as your answer is b. 
6 0
3 years ago
Which congruence theorem can be used to prove △WXS ≅ △YZS? Triangles W X S and Y Z S are connected at point S. Angles W X S and
iVinArrow [24]

Point S makes the two connected angles the same. They both have right angles.

And one side of each is congruent.

This means you know 2 angles are the same and one side is the same.

You would use ASA (Angle, Side, Angle)

3 0
3 years ago
Read 2 more answers
What is the area of the shaded region?<br> 21 mm<br> 24 mm<br> 42 mm<br> 48 mm<br> Save and Exit
Harrizon [31]

Answer:

It seems that you have missed to upload the shaded region for this problem. you are requested to please provide the shaded region so that we can help you with this problem

Step-by-step explanation:

6 0
3 years ago
Sammy plans to build a kite He has two rods of lengths 4 feet and 3 feet Find the area of the material he will need to cover the
Vitek1552 [10]
The answer would be D: 12 ft2
6 0
2 years ago
Other questions:
  • F(1)=-1.5 <br><br> f(n+1)=f(n)+0.5 <br><br> what is f(10)?
    7·1 answer
  • In the figure on the right, Triangle EFG is congruent to Triangle LMN. Find the value of x. Then describe the Transformations th
    14·2 answers
  • The car contains 50,000 rods. Claude Ong, manager of Quality Assurance, directs his crew measure the lengths of 100 randomly sel
    10·1 answer
  • Which of the following is a solution to the following system of inequalities let the green region represents the answer region
    15·1 answer
  • Question 1.
    12·2 answers
  • The sum of the tens digit and the hundreds digit of a number is three times the units digit. 1/5 of the sum of all three digits
    8·1 answer
  • Let a be a nonzero rational number. Is rational or irrational? Prove your answer by picking a value for a and simplifying
    9·1 answer
  • (4y + 3)<br> (5x - 7)<br> (3x + 17°<br> X= ,y= ,
    9·1 answer
  • What is the measure of angle 1?
    14·1 answer
  • Can someone help with this question?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!