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3 years ago

Express in terms i root of -40

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

5 0

Answer:

6.32455532i

Step-by-step explanation:

Use the square root calculator too find it

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25 POINTS QUICK!!! could someone please help me with these two problems?? and possibly explain?? i need work too please! 25 POIN

svet-max [94.6K]

Answer:

the first one A the sum of the angles are 10x+10 For the second one B the sum wud be 8x+20

Step-by-step explanation:

you juts add them all together

6 0

3 years ago

Read 2 more answers

Based on the cumulative frequency histogram, determine the number of swimmers who swam between 200 and 249 yards. Determine the

Lostsunrise [7]

Answer:

$(a)\ 200 \to 249 =3$

$(b)\ 150 \to 199 = 0$

$(c)\ Total = 20$

Step-by-step explanation:

Given

See attachment for cumulative frequency histogram

Solving (a): Swimmers between 200yd and 249yd

To do this, we simply read the data from the 0 mark

From the histogram, we have:

$0 \to 249 = 15$

and

$0 \to 199 = 12$

So:

$200 \to 249 = 0 \to 249 - 0 \to 199$

This gives:

$200 \to 249 = 15-12$

$200 \to 249 =3$

Solving (b): Swimmers between 150yd and 199yd

To do this, we simply read the data from the 0 mark

From the histogram, we have:

$0 \to 149 = 12$

and

$0 \to 199 = 12$

So:

$150 \to 199 = 0 \to 199 - 0 \to 149$

This gives:

$150 \to 199 = 12-12$

$150 \to 199 = 0$

Solving (c): Total swimmers

To do this, we simply read the longest bar of the histogram

$Longest = 20$

Hence:

$Total = 20$

4 0

2 years ago

Write a rule for each pattern. Then use your rule to find the next two terms in the pattern. The numbers are: 1, 3, 6, 10, 15, 2

Leya [2.2K]

Triangular Number Sequence

This is the Triangular Number Sequence:

1, 3, 6, 10, 15, 21, 28, 36, 45, ...

This sequence comes from a pattern of dots that form a triangle:

By adding another row of dots and counting all the dots we can
find the next number of the sequence.

A Rule

We can make a "Rule" so we can calculate any triangular number.

First, rearrange the dots (and give each pattern a number n), like this:

Then double the number of dots, and form them into a rectangle:

The rectangles are n high and n+1 wideand xn is how many dots in the triangle (the value of the Triangular Number n)

And we get (remembering we doubled the dots):

2xn = n(n+1)xn = n(n+1)/2

Rule: xn = n(n+1)/2

Example: the 5th Triangular Number is

x5 = 5(5+1)/2 = 15

Example: the 60th is

x60 = 60(60+1)/2 = 1830

Wasn't it much easier to use the formula than to add up all those dots?

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3 years ago

Read 2 more answers

Use the formula m= v 2 -v 1 x 2 -x 1 to calculate the slope of the line The slope of the line is

Anit [1.1K]

Answer: I actually do not know but i know that the answer is A.

Step-by-step explanation:

I'm smart

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3 years ago

Describe situation in which a variable could be used to present any whole number greater than zero

Ira Lisetskai [31]

Well greater than zero can be anything above -1 so if u take a number and make something greater so comment any number above i will answer u and we will talk about it in the comment section

3 0

3 years ago