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3 years ago

What ratio is equivalent to the ratio 14:7 A 1:7 B2:7 C2:1

Mathematics

2 answers:

erastovalidia [21]3 years ago

7 0

Answer:

14:7 is the same as 2:1 because 7 can go into 14 two times and into 7 once

so your answer would be C

svp [43]3 years ago

5 0

Answer:

c 2:1

Step-by-step explanation:

If you simplify 14:7 it is 2:1 (divide by 7)

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Bob wants to buy a TV that cost $500 plus 8% tax. He is getting a bonus of $45 and a birthday gift of $85 which he plans to use

Genrish500 [490]

Answer:

He needs to work for 40 whole hours

Step-by-step explanation:

In this question, we are tasked with calculating the amount a Tv will cost Bob in terms of the number of hours he needs to work.

Let’s look at the total cost he has to pay.

a. $500

b. 8% tax = 8/100 * 500 = $40

c. He is paying 2 bills of $35 each making a total of 2 * $35 = $70

The total amount he is to pay is thus; 500 + 40 + 70 = $610

Let’s look at his income ;

a. Bonus $45

b. Birthday gift $85

The total amount of money he has asides his salary to offset the bill is 45 + 85 = $130

The balance to pay from his salary would be $610 - $130 = $480

The number of hours he has to work since he earns $12 per hour would be 480/12 = 40 hours of work

5 0

4 years ago

Read 2 more answers

Suppose you have a sample of 35 children with antisocial tendencies and you are particularly interested in the emotion of surpri

n200080 [17]

Answer and explanation:

Please find explanation attached

4 0

4 years ago

Help me please i need help

Pani-rosa [81]

Answer to number one is:

$31\sqrt{2}$

Answer to number 2 is:

$21\sqrt{7}$

7 0

3 years ago

A game has a rectangular board with an area of 44 in2. There is a square hole near the top of the game board in which you must n

Stolb23 [73]

The area of the hole would be 9 in^2 if it is considered that every space withing the board has equal possibilities then

9/44 = 0.204 = 20.4%

4 0

3 years ago

Read 2 more answers

A recent study focused on the number of times men and women send a Twitter message in a day. The information is summarized below

jok3333 [9.3K]

Answer:

The value of the test statistic = 2.58

Test statistic Z = - 4.805

|Z| = 4.805 > 2.58

Null hypothesis is rejected The value of the test statistic = 2.58

There is significant difference between in the mean number of times men and women send a Twitter message in a day

Step-by-step explanation:

Step(i):-

Sample size of men n₁ = 25

mean of the first sample x₁⁻ = 20

Standard deviation of the first sample σ₁ = 5

Sample size of women n₂ = 30

mean of the second sample x₂⁻ = 30

Standard deviation of the first sample σ₂ = 10

Level of significance ∝= 0.01

<u>Step(ii)</u>:-

Null Hypothesis : H₀: There is no significant difference between in the mean number of times men and women send a Twitter message in a day

Alternative Hypothesis :H₁:There is significant difference between in the mean number of times men and women send a Twitter message in a day

Test statistic

$Z = \frac{x^{-} _{1} - x^{-} _{2} }{\sqrt{\frac{S.D_{1} ^{2} }{n_{1} }+\frac{ S.D_{2} ^{2}}{n_{2} } } }$

$Z = \frac{20 - 30 }{\sqrt{\frac{(5)^{2} }{25 }+\frac{ (10)^{2} }{ 30} } }$

Z = $\frac{-10}{2.081} = - 4.805$

The value of the test statistic = 2.58 C

|Z| = 4.805 > 2.58

Null hypothesis is rejected The value of the test statistic = 2.58

<u>Conclusion:</u>-

There is significant difference between in the mean number of times men and women send a Twitter message in a day

7 0

3 years ago