Which statements are correct about quadrilaterals?Choose all answers that are correct.
A.
All squares are rhombuses.
B.
All rectangles are parallelograms.
C.
All rhombuses are trapezoids.
D.
All 4-sided shapes have at least one pair of parallel sides.
Answers
A: True (4 sides equals in a square)
B: True all rectangle has a symetry centre
C: True (2 sides // in a rhombuse since is a parallelogram)
D:False
Related Questions
Carmen is at a used bookstore. Paperback books cost $ 1 each, and hardcover books cost $ 2 each. Carmen can spend up to $ 10 in all.A. Write an inequality that represents this situation. let x be the number of paperback books, and let Y be the number of hardcover books.B. Graph the solution to your inequality on the plane below
Write a real world problem using ratios or rates that could be represented in the coordinate plane
A quality control company was hired to study the length and made a sticks produced by certain company the team carefully measured the length of mini mini mini sticks and a distribution seems to be slightly skewed to the right with a mean of 99.83 cm and a standard deviation of 0.1 cm what is the probability of finding a meet a stick but they let them more than 99.94 cm
Simplify. 2.18 x 10 to the power of 4 PLEASE HELP!!
Answers
Question:
The area of the kite is 48 cm². What are the lengths of the diagonals PR and QS?
________
Solution:
You can split the kite into two isosceles triangles: PSR and PQR.
Assume that both diagonals intersect each other at the point O.
• Area of the triangle PSR:
m(PR) · m(OS)
A₁ = ————————
2
(x + x) · x
A₁ = ——————
2
2x · x
A₁ = ————
2
A₁ = x² (i)
• Area of the triangle PQR:
m(PR) · m(PQ)
A₂ = ————————
2
(x + x) · 2x
A₂ = ——————
2
2x · 2x
A₂ = ————
2
4x²
A₂ = ———
2
A₂ = 2x² (ii)
So the total area of the kite is
A = A₁ + A₂ = 48
Then,
x² + 2x² = 48
3x² = 48
48
x² = ———
3
x² = 16
x = √16
x = 4 cm
• Length of the diagonal PR:
m(PR) = x + x
m(PR) = 2x
m(PR) = 2 · 4
m(PR) = 8 cm
• Length of the diagonal SQ:
m(SQ) = x + 2x
m(SQ) = 3x
m(SQ) = 3 · 4
m(SQ) = 12 cm
I hope this helps. =)
Tags: polygon area triangle plane geometry
Answers
c = 3
∠d = 38° (asked for the angle)
g = 5
Answers
Answer:
x = -
Step-by-step explanation:
2 + + x =
Multiply through by 40 ( the LCM of 5 and 8 ) to clear the fractions
80 + 8x + 40x = 35
48x + 80 = 35 ( subtract 80 from both sides )
48x = - 45 ( divide both sides by 48 )
x = - = -
b. 7:3 = 21:9
c. 21:7 = 3:9
d. 7:21 = 9:3
Answers
Answer:
Option A.
Step-by-step explanation:
There are two fraction given in this question and we have to write the proportion using colon.
Visually fractions and
are different but when we simplify these fractions we get the actual relation between them.
We simplify first.
By dividing from 7 in the numerator and denominator we get
similarly we simplify the fraction
By dividing numerator and denominator by 3
Now we can say that both the fractions are equal.
So the ratio will be 7 : 21 = 3 : 9
Option A. will be the answer.
Answers
Thank you for asking your question!
Have more? Just ask!
Answer:
9
Explanation:
18 / 3 = 6 x 2 = 12.
21 - 12 = 9
Hope this helps!
Answer:
3
,
3
,
2
O
,
2
O
2
,
O
9
,
18
Step-by-step explanation:
Answers
(2/3)x = 16
You can get rid of the fractions by multiplying both sides by 3.
3(2/3)x = 16(3)
2x = 48
Then divide both sides by 2.
2/2 = 1 48/2 = 24
x = 24
2/3 of 24 is 16
You can double check by multiplying 2/3 times 24. This is 16. So we are correct.
The solution is: 2/3 of 24 is 16.
Here, we have,
Let the unknown number equal x.
(2/3)x = 16
You can get rid of the fractions by multiplying both sides by 3.
3(2/3)x = 16(3)
2x = 48
Then divide both sides by 2.
2/2 = 1
48/2 = 24
so, we get,
x = 24
the answer we have,
2/3 of 24 is 16.
now,
we can double check by multiplying 2/3 times 24.
This is 16. So we are correct.
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