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3 years ago

Whats the midpoint of (-2,7)

1 answer:

7 0

There isn't a midpoint when there's only one point. What's in the middle of one point? Unless you're talking about what number is directly in the middle of -2 and 7, at which it would be 3.

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To find the measure of ∠A in ∆ABC, use the___(Pythagorean Theorem, Law of Sines, Law of Cosines). To find the length of side HI

nadya68 [22]

Part 1) To find the measure of ∠A in ∆ABC, use

we know that

In the triangle ABC

Applying the law of sines

$\frac{a}{sin\ A}=\frac{b}{sin\ B}=\frac{c}{sin\ C}$

in this problem we have

$\frac{a}{sin\ A}=\frac{b}{sin\ theta}\\ \\a*sin\ theta=b*sin\ A\\ \\ sin\ A=\frac{a*sin\ theta}{b} \\ \\ A=arc\ sin (\frac{a*sin\ theta}{b})$

therefore

the answer Part 1) is

Law of Sines

Part 2) To find the length of side HI in ∆HIG, use

we know that

In the triangle HIG

Applying the law of cosines

$g^{2}=h^{2}+i^{2}-2*h*i*cos\ G$

In this problem we have

g=HI

G=angle Beta

substitute

$HI^{2}=h^{2}+i^{2}-2*h*i*cos\ Beta$

$HI=\sqrt{h^{2}+i^{2}-2*h*i*cos\ Beta}$

therefore

the answer Part 2) is

Law of Cosines

3 0

2 years ago

Read 2 more answers

What is -1/3 plus 4/5

Doss [256]

-1/3 + 4/5

-5/15 + 12/15

7/15

Hope this helped!

-TTL

8 0

3 years ago

Read 2 more answers

60 POINTS BRAINLIES

MaRussiya [10]

Answer:

see below

Step-by-step explanation:

a) median : re-arranged the numbers in order. i.e. min to max

gold: 147 , 147 , 175 , 206 , 212 , 227 , 263 , 275 , 440 , 1022

212 + 227 = 219.50

silver: 147 , 163 , 165 , 170 , 178 , 241 , 295 , 313 , 357 , 794

178 + 241 = 209.50

bronze: 151 , 169 , 179 , 187 , 193 , 260 , 289 , 325 , 349 , 704

193 + 260 = 226.50

b) mean : sum of all numbers divide by n, where n=10

gold: = (147 , 147 , 175 , 206 , 212 , 227 , 263 , 275 , 440 , 1022 ) / 10

= 311.40

silver: = (147 , 163 , 165 , 170 , 178 , 241 , 295 , 313 , 357 , 794 ) / 10

= 282.30

bronze: = (151 , 169 , 179 , 187 , 193 , 260 , 289 , 325 , 349 , 704 ) / 10

= 280.60

c) standard deviation on population (STDEV.P)

Australia = 16.44

china = 33.03

france = 19.74

germany = 30.21

great britain = 13.89

hungary = 12.04

italy = 11.44

soviet union = 48.46

sweden = 13.47

united states = 133.84

6 0

3 years ago

Percent Means Tenth?

WITCHER [35]

Answer:

ten percent - a tenth part; one part in ten equal parts. one-tenth, tenth, tenth part. common fraction, simple fraction - the quotient of two integers. Based on WordNet 3.0, Farlex clipart collection.

8 0

3 years ago

Here is a balanced hangar. A circle has a mass of 3 grams and a square has a mass of 2 grams. Which is the mass of a triangle? 3

mrs_skeptik [129]

Answer:

Step-by-step explanation:

Givens

Circle: 3 grams Number: 1 right hand side Number LHS: 2

Square: 2 grams Number: 2 Number LHS: 5

Triangle: x Number: 5 Number LHS: 2

Formula

Mass RHS = Mass LHS

Solution

3*1 + 2*2 + 5x = 3*2 + 5*2 + 2*x Combine

3 + 2 + 5x = 6 + 10 + 2x

5 + 5x = 16 + 2x Subtract 5 from both sides

5-5+5x = 16-5 + 2x Combine

5x = 11 + 2x Subtract 2x from both sides

3x = 11 Divide by 3

x = 11/3

As you can see, I'm not getting any of the answers that you have provided. Ask your teacher how it was done. (The method used is correct).

8 0

2 years ago