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3 years ago

What is 2 + 2 divided by 2 + 6 -3

Mathematics

1 answer:

Delvig [45]3 years ago

7 0

Answer:

Step-by-step explanation:

because 2+2=4

divided by 2 =2

2+6=8

8-3=5

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What is 42% in simplest form?plz show me how to do it

frozen [14]

Hey there!

42%= 42/100

42/100=2/2×21/50

So 21/50 is the simplest form of 42%

6 0

3 years ago

To prove :One plus cot square theta into tan theta by sec square theta = cot theta

pickupchik [31]

we are given

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)} =cot(\theta)$

We will simplify left side and make it equal to right side

Left side:

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)}$

we can use trigonometric identity

$1+cot^2(\theta)=csc^2(\theta)$

we can replace it

$\frac{(csc^2(\theta))*tan(\theta)}{sec^2(\theta)}$

we know that

csc=1/sin and sec=1/cos

so, we can replace it

and we get

$\frac{cos^2(\theta)tan(\theta)}{sin^2(\theta)}$

now, we know that

tan =sin/cos

$\frac{cos^2(\theta)*sin(\theta)}{sin^2(\theta)*cos(\theta)}$

we can simplify it

and we get

$\frac{cos(\theta)}{sin(\theta)}$

we can also write it as

$=cot(\theta)$

Right Side:

$cot(\theta)$

we can see that

left side = right side

so,

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)} =cot(\theta)$ ......Answer

6 0

3 years ago

Giving away extra points

Eva8 [605]

Hi ty for the points, answer is the light blue one

7 0

2 years ago

Camille has a stamp collection she is very proud of. She buys a frame to display her favorite stamps. The frame is 6 inches wide

Zielflug [23.3K]

Answer:

6 ÷ 7 inches

Step-by-step explanation:

The computation of the width of each stamp is shown below;

Given that

The frame is 6 inches wide

And, the row is 7 stamp fits perfectly across it

So, the width of each stamp is

= 6 ÷ 7 inches

4 0

2 years ago

Listed below are the durations (in hours) of a simple random sample of all flights of a space shuttle. Find the (a) mean, (b)

-Dominant- [34]

Answer:

Mean = 212.93

Median = 231

Mode = 231

Mid range = 192.5

(B) Yes, the time of 0 hours is very unusual. It could represent a flight that was aborted.

Step-by-step explanation:

We are given the following data set:

8, 92, 231, 189, 169, 267, 196, 381, 257, 231, 385, 330, 219, 239, 0

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{3194}{15} = 212.93$

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$

Sorted data:

0, 8, 92, 169, 189, 196, 219, 231, 231, 239, 257, 267, 330, 381, 385

$\text{Median} = \dfrac{15 + 1}{2}^{th}\text{ term} = 8^{th}\text{ term} = 231$

Mode is the most frequent observation in the data.

Mode = 231

It repeated 2 times.

$\text{Mid range} = \dfrac{\text{Maximum value + Minimum value}}{2}\\\\= \dfrac{385 + 0}{2} = 192.5$

0 is an outlier to the given dataset. Thus,

Option (B) Yes, the time of 0 hours is very unusual. It could represent a flight that was aborted.

7 0

3 years ago