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3 years ago

How to find the height of a right triangle formula?

Mathematics

1 answer:

pochemuha3 years ago

3 0

The formula of the area of a triangle is A= Hxb/2 where h -height, b-base
therefore we can find height
H=2x A/b

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What is the distance between points (-3,1) and (2,3)

Alchen [17]

Answer:

√ 17

The result can be shown in multiple forms.

Exact Form:

√ 17

Decimal Form:

4.12310562

Step-by-step explanation:

(Use the distance formula to determine the distance between the two points.)

First, substitute the actual values of the points into the distance formula.

Then, just simplify

Don't take my word for it. Hope this helps :)

8 0

2 years ago

Help please! See attached picture <br><br>x= ___ m

arlik [135]

Answer:

The answer is 42.9

Step-by-step explanation:

$\frac{35.2}{67.2} = \frac{x}{81.9} \\ x = \frac{35.2 \times 81.9}{67.2 } \\ x = 42.9$

4 0

2 years ago

Factorise fully 3r+6r2

velikii [3]

Answer:

3r(1 + 2r)

Step-by-step explanation:

3r + 6r^2

take common

3r(1 + 2r)

3 0

2 years ago

Read 2 more answers

A sample of 100 people is classified by gender (male/female) and by whether they are registered voters. The sample consists of 8

uysha [10]

Answer:

Step-by-step explanation:

Given :

Male Female Total

Registered 60

Non registered 40

Total 20 80

Solution :

N= 100

Formula of expected frequency = $E_{ij}=\frac{T_i \times T_j}{N}$

$E_{ij}$ = expected frequency for the ith row/jth columm.

$T_i$ = total in the ith row

$T_j$ = total in the jth column

N = table grand total.

So, using formula $E_{11}=\frac{T_1 \times T_1}{100}$

$E_{11}=\frac{60 \times 20}{100}$

$E_{11}=12$

$E_{12}=\frac{T_1 \times T_2}{100}$

$E_{12}=\frac{60 \times 80}{100}$

$E_{12}=48$

$E_{21}=\frac{T_2 \times T_1}{100}$

$E_{21}=\frac{40 \times 20}{100}$

$E_{21}=8$

$E_{22}=\frac{T_2 \times T_2}{100}$

$E_{22]=\frac{80 \times 40}{100}$

$E_{22}=32$

Expected frequency table

Male Female Total

Registered 12 48 60

Non registered 8 32 40

Total 20 80

So, the expected frequency for males who are registered voters are $E_{11}=12$

5 0

3 years ago

What is the k?<br> 5/k = 15/20

myrzilka [38]

Answer:

Step-by-step explanation:

k=15/20*5

k= 75/20 or 3.75

fraction can also be 15/4 or 3 3/4

5 0

3 years ago