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Luba_88 [7]
3 years ago
13

Flip a coin 4 times and calculate the experimental probability of the coin landing heads up.

Mathematics
2 answers:
Reika [66]3 years ago
5 0

Answer:

Am going to say 50%

Step-by-step explanation:

Because you flip the coin four times so it could land on heads 2 times or tails 2 times.

Shkiper50 [21]3 years ago
4 0

Answer:

the fisrt  is 3/4 th second is 5/8

Step-by-step explanation:

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Given f(x) = x^2 + 3 , work out the value of f(4)
Tamiku [17]

Answer: 19

Step-by-step explanation:

f(4)=(4)^2+3=16+3=19

7 0
2 years ago
Read 2 more answers
How many terms are in a^2-ab+8b+b^2-1
DanielleElmas [232]
Remember that the terms of a polynomial are the parts of the polynomial separating by addition and subtraction; in other words, the parts separated by (+) and (-) signs. Knowing this, we can separate the terms of our polynomial:
a^2-ab+8b+b^2-1
- First term: a^2
- Second term: -ab
- Third term: 8b
- Fourth term: b^2
- Fifth term: -1

We can conclude that there are 5 terms in the polynomial a^2-ab+8b+b^2-1.
8 0
3 years ago
Tim is planning a rectangular flower garden.The garden will be 106 flowers wide and 19 flowers long he has 2,000 flower does he
ANTONII [103]

Answer:

No

Step-by-step explanation:

Multiply width (106) x length (19) = 2014.  Tim needs 14 more flowers.

6 0
2 years ago
Could someone please answer question b) ii) ?<br> The question is on the attached image.
mel-nik [20]

Answer:

b) i) Curve A

ii) - 1.75

iii) x = 1 - √5  or x = 1 + √5

Step-by-step explanation:

b) i) We are given a function y = x² - 2x - 3 and the graph of this function is also shown in the side diagram.

The equation can be rearranged to y = (x - 1)² - 4

⇒ (x - 1)² = y + 4

Therefore, this is an equation of a parabola having the vertex at (1,-4) point and its axis is parallel to the positive y-axis.

So, the curve A represents the equation given. (Answer)

ii) Now, at x = 2.5, f(x) = 2.5² - 2 × 2.5 - 3 = - 1.75 (Answer)

iii) When y = 1, then x² -2x - 3 = 1

⇒ x² - 2x - 4 = 0

⇒ (x - 1)² - 5 = 0

⇒ (x - 1)² - (√5)² = 0

⇒ (x - 1 + √5)(x - 1 - √5) = 0

⇒ x = 1 - √5  or x = 1 + √5 (Answer)

3 0
3 years ago
Which angle is congruent to 5?
solniwko [45]

Answer:

Angle #4

Step-by-step explanation:

4 & 5 are equal, and opposite.

1 & 2 are also congruent by this standard.

6 0
3 years ago
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