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Tresset [83]
3 years ago
15

If you flip two coins 4 times,

Mathematics
2 answers:
Vanyuwa [196]3 years ago
3 0

Answer:

1

Step-by-step explanation:

The different possibilities for flipping two coins are:

TT

TH

HT

HH

Only 1/4 is two heads.

Since you're finding the best prediction possible for the number of times both coins will land on heads out of 4 times, that means its 1/4 * 4  = 1 time

Cloud [144]3 years ago
3 0

Answer:

1/4 is the probablity

Step-by-step explanation:

if you flip 2 coins one time the no.of outcome are 4 if you flip is 4 time no.of outcomes are 16

P(E)= favourable outcomes/ total no.of outcomes

= 4/16

= 1/4

PLS MARK BRAINLIEST, THNX

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Help!! BRAINLIEST TOO!
natulia [17]

Answer:

36.5 inches

Step-by-step explanation:

Given

See attachment for the given data

Required

Which length is closest to 4.2lb

The given data is a linear dataset.

So, we start by calculating the slope (m)

m =\frac{y_2 - y_1}{x_2 - x_1}

Pick any two corresponding points from the table

So, we have:

(x_1,y_1) = (8,1.21)

(x_2,y_2) = (12,1.63)

So:

m =\frac{y_2 - y_1}{x_2 - x_1}

m =\frac{1.63 - 1.21}{12 - 8}

m =\frac{0.42}{4}

m =0.105

The linear equation is then calculated using:

y = m(x - x_1) + y_1

This gives:

y = 0.105 * (x - 8) + 1.21

Open bracket

y = 0.105x - 0.84 + 1.21

y = 0.105x + 0.37

To get the length closest to 4.2lb,

we set y = 4.2

Then solve for x

So, we have:

y = 0.105x + 0.37

4.2 = 0.105x + 0.37

Collect like terms

0.105x= 4.2 - 0.37

0.105x= 3.83

Solve for x

x= 3.83/0.105

x\approx 36.5

4 0
3 years ago
(2x)^-1<br> how do u put this into a positive exponent and a fraction?<br> 20 points
Naddika [18.5K]

For this case we have that by definition of power properties it is fulfilled that:

a ^ {-1} = \frac {1} {a ^ 1} = \frac {1} {a}

Then, if we have the following expression:

(2x)^{ -1}

Applying the property, we can rewrite the expression as:

\frac {1} {(2x) ^ 1} = \frac {1} {2x}

Answer:

\frac {1} {2x}

6 0
4 years ago
Trigonometry
schepotkina [342]

The area of the triangle ABC is 207.5 square units.

Explanation:

The measurements of the sides of the triangle are AB=19, AC=24 and m\angle A=65^{\circ}

We need to determine the area of the triangle ABC.

<u>Area of the triangle:</u>

The area of the triangle can be determined using the formula,

{Area}=\frac{1}{2} b c \sin A

where b=19, c=24 and m\angle A=65^{\circ}

Substituting these values in the above formula, we get,

{Area}=\frac{1}{2}(19)(24)  \sin 65^{\circ}

Simplifying the values, we get,

{Area}=\frac{1}{2}(456) (0.91)

{Area}=\frac{1}{2}(414.96)

{Area}=207.48

Rounding off to the nearest tenth, we get,

{Area}=207.5

Thus, the area of the triangle ABC is 207.5 square units.

5 0
3 years ago
Read 2 more answers
Find the equation of a line that is parallel to y = x + 1 and passes through the point (3,-4).
White raven [17]

Given:

The equation of a line is:

y=x+1

A line is parallel to the given line and passes through the point (3,-4).

To find:

The equation of the line in the slope intercept form.

Solution:

The slope intercept form of a line is:

y=mx+b             ...(i)

Where, m is the slope and b is the y-intercept of the line.

We have,

y=x+1                ...(ii)

On comparing (i) and (ii), we get

m=1

Slope of the given line is 1.

We know that the slopes of parallel lines are equal. So, the slope of the required line is 1.

The required line passes through the point (3,-4) with slope 1. So, the equation of the required line is:

y-y_1=m(x-x_1)

y-(-4)=1(x-3)

y+4=x-3

Subtracting 4 from both sides, we get

y=x-3-4

y=x-7

Therefore, the equation of the required line is y=x-7.

4 0
3 years ago
Hi looking for help ASAP ASAP ASAP ASAP
AURORKA [14]

Answer:

see explanation

Step-by-step explanation:

A translation of 6 units to the right, means adding 6 to the x- coordinate.

J (- 4, 5 ) → J' (- 4 + 6, 5 ) → J' (2, 5 )

K (- 2, 1 ) → K' (- 2 + 6, 1 ) → K' (4, 1 )

L (- 4, 2 ) → L' (- 4 + 6, 2 ) → L' (2, 2 )

7 0
3 years ago
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