All categories

3 years ago

Ooh, ooh

Mathematics

2 answers:

babymother [125]3 years ago

5 0

Answer:

I love this songgg...

Andre45 [30]3 years ago

3 0

Answer:

that is so sweet i wish i could show my bf that but sadly we split a few day ago and just reading that made me cry

Step-by-step explanation:

You might be interested in

In the diagram below, is circumscribed about quadrilateral ABCD . What is the value of ?

Olin [163]

Answer:

Step-by-step explanation:

There's a property of cyclis quadrilaterals that say that opposite sides will add up to 180

so we have

$5x+75=180\\\\5x=180-75\\\\5x=105\\\\x=21$

which is option c

5 0

3 years ago

cam hits the bullseye in 8 darts out of 15 throws. what is the experimental probability that came next throws will hit the bulls

Zigmanuir [339]

Answer:

A darts player practices throwing a dart at the bull’s eye on a dart board. Her probability of hitting the bull’s eye for each throw is 0.2.

(a) Find the probability that she is successful for the first time on the third throw:

The number F of unsuccessful throws till the first bull’s eye follows a geometric

distribution with probability of success q = 0.2 and probability of failure p = 0.8.

If the first bull’s eye is on the third throw, there must be two failures:

P(F = 2) = p

q = (0.8)2

(0.2) = 0.128.

(b) Find the probability that she will have at least three failures before her first

success.

We want the probability of F ≥ 3. This can be found in two ways:

P(F ≥ 3) = P(F = 3) + P(F = 4) + P(F = 5) + P(F = 6) + . . .

= p

q + p

q + . . . (geometric series with ratio p)

1 − p

(0.8)3

(0.2)

1 − 0.8

= (0.8)3 = 0.512.

Alternatively,

P(F ≥ 3) = 1 − (P(F = 0) + P(F = 1) + P(F = 2))

= 1 − (q + pq + p

= 1 − (0.2)(1 + 0.8 + (0.8)2

)

= 1 − 0.488 = 0.512.

Since p = 0.8 and q = 0.2, the expected number of failures before the first success

E[F] = p

0.8

0.2

= 4.

7 0

3 years ago

Read 2 more answers

To obtain an estimate of the proportion of "full time" university students who have a part time job in excess of 30 hours per we

musickatia [10]

Answer:

2,436 students

Step-by-step explanation:

At a 90% confidence level, the z-score is 1.645 and the confidence interval is given by:

$x\pm z\frac{s}{\sqrt n}$

Where s is the standard deviation, and n is the sample size.

If they want the length of their confidence interval to be no greater than 0.2, it must be no further than 0.1 from the mean 'X':

$0.1>1.645\frac{3}{\sqrt n}\\\sqrt n>1.645*30\\n>2,435.42$

Rounding up to the next whole number, the sample size should be 2,436 students.

5 0

4 years ago

What is the slope of the line on the graph? Enter your answer in the box. A coordinate grid that includes the line y equals nega

RUDIKE [14]

we have

the equation of the line is $y=-2x$

the points are

$A(3,-6)\\B(0,0) \\C(-3,6)$

Method 1

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form $y/x=k$ or $y=kx$

In this problem we have a direct variation

The constant of proportionality k is equal to the slope of the line

$k=-2$

$m=-2$

therefore

the answer is

the slope of the line is equal to

$m=-2$

Method 2

we know that

the formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

$A(3,-6)\\B(0,0)$

substitute in the formula

$m=\frac{0+6}{0-3}$

$m=\frac{6}{-3}$

$m=-2$

therefore

the answer is

the slope of the line is equal to

$m=-2$

3 0

4 years ago

Read 2 more answers

Mkey [24]

we know that

1) scale factor is equal to $\frac{1}{10}$

2) The ratio of the perimeters of the triangles is equal to the ratio of the measures of the sides

3) the longest side of ∆ABC=[scale factor]*the longest side of ∆DEF

the longest side of ∆ABC= $\frac{1}{10}*40$

the longest side of ∆ABC= $4$ units

the answer part a) is

the longest side of ∆ABC is $4$ units

Part b)

The ratio of the area of ∆ABC to the area of ∆DEF is equal to the scale factor squared

$[scale factor]^{2} =(\frac{1}{10})^{2} \\ \\ =\frac{1}{100} \\ \\ =0.01$

therefore

the answer part b) is

The ratio of the area of ∆ABC to the area of ∆DEF is $\frac{1}{100}$

6 0

3 years ago

Read 2 more answers