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fredd [130]
2 years ago
15

The equation below describes a parabola. If ais negative, which way does the parabola open?

Mathematics
2 answers:
Deffense [45]2 years ago
7 0
I cannot see the question show me
laila [671]2 years ago
6 0

Answer:

Downwards

Step-by-step explanation:

Suppose you have the quadratic equation, ax^2 +bx+c, if a is positive, the parabola opens upwards. If a is negative, the parabola opens downwards.

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Can someone please help me with this square root problem?
vovikov84 [41]

Answer:

Rational, Rational, Rational, Irrational, Irrational

Step-by-step explanation:

The first question:

  • -√49
  • -7

This number is rational

Second:

  • -70.8888....

This number is rational. It wouldn't be rational if the digits won't repeat.

Third:

  • 15.91

This number is rational

Fourth:

  • 17π

This is irrational. The digits of pi do not repeat, making it irrational.

Fifth:

  • -√14

Irrational. The square root of a non-perfect square is irrational.

<h3 />

-Chetan K

5 0
2 years ago
Find the volume of the rectangular pyramid below.
lutik1710 [3]

Answer:

4800m³

Step-by-step explanation:

V=\frac{lwh}{3}=\frac{(30)(24)(20)}{3} =4800

8 0
2 years ago
Sharise Brody folds and glues corrugated cardboard boxes at the rate of $0.57 per box. If she averages 40 boxes per hourhow much
Valentin [98]

Answer:

she makes $22.80 a day

Step-by-step explanation:

since she makes $0.57 per box and averages at 40 boxes a day, we multiply 40 and 0.57. 40 x 0.57 = 22.8, or $22.80.

hope this helped!

6 0
2 years ago
joanna split three pitchers of water equally among her eight plants.what fraction of a pitcher did each plant get?
Vedmedyk [2.9K]
3/8 of a fraction is the amount of water that was split 

6 0
3 years ago
Colton earns $35 per lawn he mows. In kne day he mows four lawns and he works five days a week for 20 weeks a year. His expenses
yanalaym [24]

Answer:

1) Consider that he makes $1189 every two weeks engaged with work

2) An estimate of the opportunity cost of going on the fishing trip is $1450 in two weeks

3). If he decides to buy the truck, he has to work for about 7 weeks before going on the fishing trip

Step-by-step explanation:

From the given data

Total revenue from lawn mowing per year = 35 × 4× 5×20 = $1400

Similarly total operating costs = $2110

Total profit per annum = $11890

However total revenue per every 2 weeks = $1189

To buy the truck, sell his and go on the fishing trip it will cost = 5200-1500+250 =$3950 hence he has to work for about 6.64 or approximately 7 weeks before going on the fishing trip

2) Opportunity cost will factor in the cost of having someone work for him while away

The cost is = $250 + $120/day

Hence in two weeks it will cost him $1450

3) He has to work for about 7 weeks to be able to afford the truck

7 0
2 years ago
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