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Ilia_Sergeevich [38]
4 years ago
8

Which of the following points is on the graph of the y=-4x^2-x+5?

Mathematics
2 answers:
bogdanovich [222]4 years ago
6 0

Answer:

B

Step-by-step explanation:

If you use a table, B is the only point that falls on the graph.

goblinko [34]4 years ago
4 0

Answer:

(10,-400)

Step-by-step explanation:

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What is the value of x?<br><br> I’ll mark you a brainless is you answer this question
Yanka [14]

Answer:

Step-by-step explanation:

Use the Pythagorean Theorem: a^2 + b^2 = c^2 where a and b are the sides and c is the hypotenuse

21^2 + 28^2 = c^2

441 + 784 = c^2

1125 = c^2

Now you need to take the square root of 1125 to find the value of x, which would be approx 33.5

8 0
3 years ago
Evaluate what’s in the picture.
Anna11 [10]

Answer:

8P3 = 336

9C4 = 126

Step-by-step explanation:

8P3 = 8! ÷ 5!  =  8x7x6 = 336

9C4 = 9! ÷ (5!·4!)  =  (9x8x7x6) ÷ (4x3x2) = 126

8 0
3 years ago
Antonio's toy boat is bobbing in the water under a dock. The vertical distance HHH (in \text{cm}cmstart text, c, m, end text) be
musickatia [10]

Answer: Time t = 33.0 seconds

Step-by-step explanation:

Given that the vertical distance H between the dock and the top of the boat's mast t seconds after its first peak is modeled by the function

H(t) = 5cos( 2π/3 ​t) − 35.5H

Where the maximum vertical distance = 5

At the down position, H(t) = 0

5cos( 2π/3 ​t) − (35.5/100)H = 0

5cos( 2π/3 ​t) − 0.355 × 5 =0

5cos( 2π/3 ​t) − 0.1775 = 0

5cos( 2π/3 ​t) = 0.1775

cos( 2π/3 ​t) = 0.1775/5

cos( 2π/3 ​t) = 0.355

2π/3 ​t = cos^-1 (0.355)

2π/3 ​t = 69.2

2πt = 69.2 × 3

2πt = 207.6

t = 207.6/2π

t = 33.0 seconds

3 0
4 years ago
Read 2 more answers
Match each quadratic graph to its respective function
Anna11 [10]

Answer:

f(x) = (x - 3)(x + 1) → Corresponds with the first (raised higher ) ∪ shaped graph

f(x) = -2(x - 1)((x + 3) → Corresponds with the ∩ shaped graph

f(x) = 0.5(x - 6)((x + 2) → Corresponds with the second (lower) ∪ shaped graph

Step-by-step explanation:

For the function f(x) = (x - 3)(x + 1)

We have;

When x = 0, y = -3

When y = 0 x = 3 or -1

Comparing with the graphs, it best suits the first ∪ shaped graph  that rises here than the other ∪ shaped graph

For the function;

f(x) = -2(x - 1)((x + 3)

When x = 0, y = 6

When y = 0, x = 1 or -3

Which corresponds with the ∩ shaped graph

For the function;

f(x) = 2(x + 6)((x - 2)

When x = 0, y = -24

When y = 0, x = -6 or 2

Graph not included

For the function;

f(x) = 0.5(x - 6)((x + 2)

When x = 0, y = -6

When y = 0, x = 6 or -2

Which best suits the second ∪ shaped graph  that is lower than the other (first) ∪ shaped graph

For the function;

f(x) = 0.5(x + 6)((x - 2)

When x = 0, y = -6

When y = 0, x = -6 or 2

Graph not included

For the function;

f(x) = (x + 3)((x - 1)

When x = 0, y = -3

When y = 0, x = -3 or 1

Graph not included

7 0
4 years ago
Ariana bought 7 muffins she paid 13.02 how much did each muffin cost
nalin [4]

Answer:

About $1.86

Step-by-step explanation:

It could be rounded to $1.90.

5 0
4 years ago
Read 2 more answers
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