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2 years ago

Type only a number for your answer

Mathematics

1 answer:

UNO [17]2 years ago

7 0

Answer:

x = 80

Step-by-step explanation:

x + 30 = 110 (opposite sides are congruent/equal)

x = 110 - 30 (subtract the 30 from both sides to get X by itself)

x = 80 (simplify)

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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

2 years ago

Solve a triangle when A=40 B = 50 , and C=14.

tekilochka [14]

Answer:

(c)=81°, a=9.1, b=12.

Step-by-step explanation:

m<A=40°, m<B=59

m<C=180-(40+59)=81

c=14

6 0

2 years ago

Samantha can complete her homework in 3/5 of an hour her brother can complete it in 5/6 of that time what part of an hour does i

s2008m [1.1K]

I think it takes her brother 30 minutes to complete his homework.

Because 3/5 of an hour is 36/60

5/6 = 30/36

Hope this helps! :)

4 0

2 years ago

What is the value of n in the equation –(2n + 4) + 6 = –9 + 4(2n + 1)?<br><br> n =

a_sh-v [17]

Answer:

The final result is: n = 7/10 or n = 0.7.

I think

3 0

3 years ago

Read 2 more answers

you buy a package of 6 rolls of paper towels for $5.74 and another package of 12 rolls for $16.97 at this linear rate, how much

Keith_Richards [23]

Answer:

23.24 i think

Step-by-step explanation:

3 0

2 years ago

Type only a number for your answer​

Type only a number for your answer