All categories

3 years ago

Help!!

Mathematics

2 answers:

lutik1710 [3]3 years ago

5 0

theoretical probability is a coin will land on heads 50% of the time

50% of 100 = 50

since it only landed on heads 38 times, this was less than the theoretical probability of 50

nignag [31]3 years ago

4 0

There are two options so the theoretical probability would be 50% which was different from her experimental probability because that was only 38%. The experimental probability may be different from the theoretical probability as she only spun it 100 times which may not be enough for the probability to work and the experiment may not be fair. She may be spinning it slightly tilted or knocking it or something.

You might be interested in

Request edit access<br> 2. 7x + 4 = -3<br> How to solve

Gre4nikov [31]

Answer:

x= -1

Step-by-step explanation:

7x+4= -3 take -4 off both sides> 7x= -7 now divide 7x/-7> x= -1

7 0

3 years ago

What does x equal in the equation 40÷x=6

padilas [110]

Answer:

x = $\frac{20}{3}$

3 0

3 years ago

Read 2 more answers

PLEASEEEEEEEE HELPPPPPPPPP MEEEEEEEEEE

Archy [21]

Answer:

Step-by-step explanation:

In general

Given

y = f(x) then y = f(Cx) is a horizontal stretch/ compression in the x- direction

• If C > 1 then compression

• If 0 < C < 1 then stretch

Consider corresponding points on the 2 graphs

(2, 2 ) → (4, 2 )

(4, - 2 ) → (8, - 2 )

Indicating a stretch in the x- direction.

y = f( $\frac{x}{2}$ ) with C = $\frac{1}{2}$ , that is 0 < C < 1

stretches the graph in the x- direction by a factor of 2

Thus

y = f( $\frac{x}{2}$ ) → b

5 0

3 years ago

5.Sophia got 68 points correct on her math test, which earned her an 85%. Her friend Tami

Blababa [14]

Answer:

A 80 points, B 89%

Step-by-step explanation:

Look At The Attachment::

4 0

2 years ago

Read 2 more answers

Find the slope of the line that is parallel and perpendicular <br><br> -7x-2y=4

Rus_ich [418]

$\bf -7x-2y=4\implies -2y=7x+4\implies y=\cfrac{7x+4}{-2}\implies y=\cfrac{7x}{-2}+\cfrac{4}{-2} \\\\\\ y=\stackrel{\stackrel{m}{\downarrow }}{-\cfrac{7}{2}} x-2\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array} \\\\[-0.35em] ~\dotfill$

$\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}} {\stackrel{slope}{-\cfrac{7}{2}}\qquad \qquad \qquad \stackrel{reciprocal}{-\cfrac{2}{7}}\qquad \stackrel{negative~reciprocal}{\cfrac{2}{7}}}$

now, what's the slope of a line parallel to that one above? well, parallel lines have exactly the same slope.

5 0

3 years ago