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
Mazyrski [523]
4 years ago
5

One of the sides of a parallelogram is 4.2 cm and the altitude to that side is 3.6 cm. Find the perimeter of the parallelogram i

f the altitude to the other side is 2.4 cm.
Mathematics
1 answer:
adelina 88 [10]4 years ago
4 0
The product of side length and altitude is area. The area remains the same regardless of how you measure it.

From the first side and altitude,
.. area = side*altitude = (4.2 cm)*(3.6 cm) = 15.12 cm^2
From the second side and altitude
.. area = side*altitude
.. 15.12 cm^2 = side*(2.4 cm)
.. side = (15.12 cm^2)/(2.4 cm) = 6.3 cm

The perimeter is the sum of the measures of all sides. Opposite sides are of equal measure.
.. perimeter = 2*(4.2 cm +6.3 cm) = 21.0 cm
You might be interested in
The sum of the second and third terms of G.P is six times the fourth term. Find the two possible values of the common ratio​
andrew-mc [135]

Answer:

Step-by-step explanation:

Let “a” be the first term and ”r” the common ratio of the GP. Then,

f(n) = ar^(n - 1).

f(2) + f(3) = 6f(4). (given)

ar + ar^2 = 6ar^3, or

1 + r = 6r^2, or

6r^2 - r - 1 = 0,

(3r + 1)(2r - 1) = 0.

r = -1/3, or 1/2.

If the common ratio is positive and the second term is 8 we have,

ar = 8, or

a*1/2 = 8, or a = 16.

f(n) = 16*(1/2)^(n - 1) = 2^4*2^(1 - n), or

f(n) = 2^(5 - n).

The first six terms of the GP are : 16, 8, 4, 2, 1, 1/2,…

××××××××××

Checking : f(2) + f(3) = 6f(4), (given).

LHS = 8 + 4 = 12.

RHS = 6* 2 = 12.

LHS = RHS.

8 0
2 years ago
Can someone help me pls?
Alja [10]
Are you in college bc what is that?
7 0
3 years ago
A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.
sveta [45]

All sides of the squares are congruent. This means that when solving for area:

base x height

the base and height would be the same length, 6.25

Multiply

6.25 x 6.25 = 39.0625

39.0625 ft² should be your answer (if i'm thinking of significant digits correctly)

If it should be a whole number, then 39 ft² is your answer

hope this helps

6 0
4 years ago
Read 2 more answers
Graph the function. f(x)=2x^2-5<br> please help ill give you brainliest
snow_lady [41]

f(x)=2x^2+0x-5

Find the vertex

0/4=0=x

Input x into the equation to find y or f(x)

0+0-5=f(x)

(0,-5) = Vertex

Now find a random x coordinate to input into the equation.

Let's do 4.

32+0-5=f(x)=27

It may not look like a parabola due to it being uneven.

5 0
3 years ago
What function was used to make that pattern​
Semenov [28]

Answer:

B

Step-by-step explanation:

The differences in the terms of f(x) are + 3, + 5, + 7

Since the differences are not constant the relationship is not linear

Note the differences in the differences are + 2, + 2,

The second differences are constant indicating a quadratic relationship

Note the relationship between x and f(x)

x = 1 → 1² = 1 ← require to add 5, that is 1 + 5 = 6 ← value of f(x)

x = 2 → 2²  = 4 ← require to add 5, that is 4 + 5 = 9 ← value of f(x)

x = 3 → 3² = 9 ← require to add 5, that is 9 + 5 = 14 ← value of f(x)

x = 4 → 4² = 16 ← require to add 5, that is 16 + 5 = 21 ← value of f(x)

Thus f(x) = x² + 5 → B

3 0
3 years ago
Other questions:
  • I need help with this
    14·1 answer
  • The product of two numbers is 65.Their difference is 8.Find these numbers.
    14·1 answer
  • Solve for the indicated variable 4c=d for c
    9·1 answer
  • (−6)∙(a+2b−3c−4d)−(−2)∙(−4a−3b+2c+d)
    10·2 answers
  • 21) A frozen yogurt store sells a small bowl of frozen yogurt for $2.50 plus $0.75 per topping. They sell a large bowl of frozen
    6·1 answer
  • What is 0.9380 to two significant figures please help it's an exam ​
    5·1 answer
  • Scientists calculate that the average temperature of the earth is increasing at a constant rate of 0.10 degrees a year. This sit
    7·1 answer
  • Please help. im stuck on this one ​
    8·1 answer
  • 7^10 is _____ times larger than 7^8.
    12·1 answer
  • PLSSS help if you TURLY know THISS
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!