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3 years ago

A number is 3 1/3 greater than another. If the sum of the numbers are doubled the answer would be 19 1/2

Mathematics

2 answers:

olganol [36]3 years ago

7 0

Answer:

3 and 5/24

Step-by-step explanation:

trust me bro

i wish u luck

also

i just realized that the other person got it right

ignore this lol

Delicious77 [7]3 years ago

5 0

Answer:

smaller number = 3 5/24

larger number = 6 13/24

Step-by-step explanation:

let the larger number = x

smaller number = y

x - y = 3 1/3 equation 1

2(x +y) = 191/2 equation 2

divide equation 2 through by 2

x + y = 9 3/4 equation 3

subtract equation 1 from 3

2y = 6 5/12

y = 77/12 x 1/2 = 3 5/24

substitute for y in equation 1

x - 3 5/24 = 31/3

x = 3 1/3 + 3 5/24

x = 6 13/24

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A scale diagram of a garden shows the length as 14.5cm. If the scale is 1:150, what is the actual length? The garden is _______m

Katena32 [7]

Answer:

21.75m

Step-by-step explanation:

14.5×150 =2175cm

1m =100cm

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4 0

3 years ago

You select a random sample of n=14 families in your neighborhood and find the following family sizes (number of people in the fa

satela [25.4K]

Answer:

a. Best estimate for the mean family size for the population of all families in a country is 16.3571428571

b. 95% confidence interval for the estimate is 16.3571428571±0.7106240840. That is between 15.6465187731 and 17.0677669411

c. The sample is unlikely to be very representative of all families in a country.

Step-by-step explanation:

a. mean family size for the population of all families in a country can be estimated as sample mean, and calculated as:

$\frac{15+ 16+ 19+ 18+ 17+ 15+ 16+ 16+ 15+ 16+ 15+ 16+ 17+ 18 }{14}$ ≈ 16.3571428571

b. 95% confidence interval for the estimate can be calculated using the equation CI=M± $\frac{t*s}{\sqrt{N} }$ where

M is the mean estimate (16.3571428571)

t is the corresponding statistic in the 95% confidence level and with 14 degrees of freedom (2.160)

s is the standard deviation of the sample (1.2309777100)

N is the sample size (14)

s can be calculated as square root of mean squared differences from the sample mean.

Thus 95% CI=16.3571428571± $\frac{2.160*1.2309777100}{\sqrt{14} }$ ≈ 16.3571428571±0.7106240840

The sample is unlikely to be very representative of all families in a country because as the sample data increases, estimate will improve.

7 0

3 years ago

Read 2 more answers

2. Richmond Appliance repairs washing machines. The revenue that the company earns is given by the function R(h) = 20 + 45h doll

Vesnalui [34]

The number of hours needed for the company to break even happens when
$R(h)=C(h)$

$20+45h= 5h^{2}-30$ , rearranging to make the equation 'zero' on LHS
$0= 5h^{2}-30-20-45h$
$0= 5h^{2}-45h-50$ , divide each term by 5
$0= h^{2}-9h-10$ , factorise
$0=(h+1)(h-10)$ , equate each factor to zero
$h=-1$ and $h=10$

We choose the positive value of $h$

Hence, the number of hours needed to break even is $h=10$

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3 years ago

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zalisa [80]

Rule for 1 is the rule for 1 is 14 times 3.5^x and it is exponential

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4 years ago

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Select the correct answer from each drop-down menu. observe the functions below. complete the following sentences to compare the

MrRissso [65]

The answers will be:

(4, 5)
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<h3>What is Slope and curve?</h3>

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3 years ago