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Annette [7]
3 years ago
9

Which quadrilaterals have two pairs of opposite sides that are parallel and have no right angles? Choose all answers that are co

rrect. A. parallelogram that is not a rectangle B. trapezoid C. square D. rhombus
Mathematics
1 answer:
vitfil [10]3 years ago
3 0
Trapezoid and rhombus
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John is trying to drain a swimming pool. He has two pumps, but he can only use one at a time. He knows that the time a pump take
xeze [42]
What do you mean this sentence?
the time a pump takes to drain the pool varies inversely with the power in watts of the pump,
The meaning would be : if we have a power in watts greater the time to drag the pool will be less because the relation between power and time is inverse.  

40 watts--------------5 hours) 
100 watts------------  x

because the relation between power and time is inverse, we multiply directly.
40 watts(5 hours)=100 watts x
x=(200 watts hours) / 100 watts=2 hours.

Answer: the time would be 2 hours.   (the new pump is faster)
8 0
3 years ago
What are the solutions of 2x2 + 16x + 34 = 0?
Anni [7]
2x^2 + 16x + 34 = 0
x^2 + 8x + 17 = 0
x^2 + 8x + 16 = -17 + 16 = -1
(x + 4)^2 = -1
x + 4 = sqrt(-1) = ±i
x = -4 <span>±</span> i
8 0
3 years ago
Read 2 more answers
Find the value of the missing coefficient in the factored form of 8f^3-216g^3
adoni [48]

Answer:

The value of the missing coefficient is 12

Step-by-step explanation:

* Lets explain how to factorize the difference of two cubes

- The factorization of the difference of two cubes like a³ - b³, is a

  product of a binomial and trinomial

- The binomial is the cube root of the first term and the second term

∵ The ∛a³ = a and ∛b³ = b

∴ The binomial is (a - b)

- We will find the trinomial from the binomial by square the 1st term

 of the binomial and multiply the 1st term and the 2nd term of the

 binomial with opposite sign of the binomial and square the 2nd

 term of the binomial

∴ The trinomial is (a² + ab + b²

∴ The factorization of (a³ - b³) is (a - b)(a² + ab + b²)

* Lets solve the problem

∵ 8f³ - 216g³ is the difference of two cubes

∵ ∛(8f³) = 2f

∵ ∛(216g³) = 6g

∴ The binomial is (2f - 6g)

- Lets make the trinomial

∵ (2f)² = 4f²

∵ (2f)(6g) = 12fg

∵ (6g)² = 36g²

∴ The trinomial = (4f² + 12fg + 36g²)

∴ The factorization of 8f³ - 216g³ = (2f - 6g)(4f² + 12fg + 36g²)

∴ The value of the missing coefficient is 12

7 0
3 years ago
Experiment with different types of polygons, such as a triangle, rectangle, parallelogram, pentagon, hexagon, and so on, and rev
Troyanec [42]

Answer:

Polygon 1Axis of Rotation 2Solid of Revolution

irregular pentagon :

  • 1axis of symmetry
  • 2diamond-shaped solid

right triangle:

  • 1hypotenuse
  • 2two cones with a common circular base

Step-by-step explanation:

PLATO hope this helps

4 0
3 years ago
the price of bread went from 1.50 per loaf to 2.50 per loaf in four years. find the rate of change of the price of bread
Talja [164]

Answer:

I think the answer is 1 I really hope this helps

Step-by-step explanation:


3 0
3 years ago
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