All categories

3 years ago

Brainliest Answer..... Mathzz Help PLZZZZZZZ 2 questions and details plzz

Mathematics

1 answer:

Sedbober [7]3 years ago

5 0

Outcome Red Blue Green Yellow
Frequency 10 5 13 7 total: 35 trials

experimental probability of Yellow: 7/35 =1/5 or 20%
experimental probability of Blue or Red: 5/35 + 10/35 = 15/35 = 3/7 or 42.86%

The sample is biased. This is because all he interviewed are employees of the company. They are more inclined to give a positive feedback regardless of their true opinion because they want to retain their jobs.

You might be interested in

Please help!!

garik1379 [7]

Given:

The radius of the cone = 14 ft

The slant height of the cone = 27 ft

To find the lateral surface area and the total surface area of the given cone.

Formula

The lateral surface area of the cone is

$LSA = \pi rl$ and

The total surface area of the cone is

$TSA = \pi r^{2} + \pi r l$

where,

r be the radius and

l be the slant height of the cone.

Now

Taking r = 14 and l = 27 we get

$LSA = \pi (14)(27)$ sq ft

or, $LSA = 1187.5$ sq ft

Again,

$TSA = \pi(14^2)+\pi (14)(27)$ sq ft

or, $TSA = 1803.3$ sq ft

Hence,

The lateral surface area of the cone is 1187.5 sq ft and the total surface area of the cone is 1803.3 sq ft. Option C.

5 0

3 years ago

translate the words into a algebraic expression. "twenty-seven more than a number squared" "one less than three times a number"

Stella [2.4K]

Answer:

$n^2+27$ and $3n-1$

Step-by-step explanation:

n is a number.

a number squared is $n^2$

27 more than a number squared is $n^2+27$

n is a number.

three times a number is 3 times n, or $3n$

one less than that is $3n-1$

Hope this answer helped! :)

3 0

3 years ago

Verify the identity. cotangent x equals StartFraction 1 plus cosine 2 x Over sine 2 x EndFractioncot x= 1+cos2x sin2x Use the ap

lutik1710 [3]

Answer with Step-by-step explanation:

We are given that

RHS

$\frac{1+Cos2x}{Sin2x}$

We have to verify the identity.

We know that

$1+Cos2x=2Cos^2 x$

$Sin2x=2SinxCos x$

Using the formula

$\frac{2Cos^2x}{2SinxCosx}$

$\frac{Cosx}{Sinx}$

$Cot x$

By using the formula

$Cotx=\frac{Cosx}{Sinx}$

LHS=RHS

Hence, verified

6 0

3 years ago

4-2 3/5<br>please simplify

Novosadov [1.4K]

Answer:

2x3/5

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

which of the following best describes the technique used to graph the equation using the slope and y-intercept ? Y=5x+10

Vinvika [58]

The slope-intercept is y = mx+b. You can use this as a technique for graphing to make the experience easier. The "5" would be the slope or rise/run of the line. The 10 would be where it started on the y-intercept. You could also say it would be (0,10). Since the slope is positive than it would be going in an upward direction. That is why this technique is good for graphing. I hope this helps you and please put me as the brainliest answer. :)

5 0

3 years ago

Read 2 more answers