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2 years ago

Please help with this one

Mathematics

2 answers:

sergeinik [125]2 years ago

6 0

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We may rule Brainly with Bob as our leader

tino4ka555 [31]2 years ago

3 0

The answer will be A-1188 in²

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What is the least common denominator of<br> 1/3 and 5/9

crimeas [40]

Answer:

Equivalent Fractions with the LCD

1/3 = 3/9

5/9 = 5/9

Solution:

Rewriting input as fractions if necessary:

1/3, 5/9

For the denominators (3, 9) the least common multiple (LCM) is 9.

LCM(3, 9)

Therefore, the least common denominator (LCD) is 9.

Calculations to rewrite the original inputs as equivalent fractions with the LCD:

1/3 = 1/3 × 3/3 = 3/9

5/9 = 5/9 × 1/1 = 5/9

4 0

3 years ago

Some conference-goers saunter over to the Healthy Snack Box Machine, where they each choose one of ﬁve kinds of fruit, one of th

nalin [4]

Answer: There are 90 snack boxes.

Step-by-step explanation:

Given : The number of kinds of fruits = 5

The number of kinds of herbal teas = 3

The number of kinds of flavors of wrap sandwich = 6

Then by using the fundamental principal of counting, the number of possible snack are there will be :_

$5\times3\times6= 90$

Therefore, the number of possible snacks = 90

4 0

3 years ago

During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of $333. The next month, 400 u

Mice21 [21]

Answer: the cost per unit of gas is $0.28

Step-by-step explanation:

Let x represent the cost per unit of electricity.

Let y represent the cost per unit of gas.

During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of $333. This is expressed as

500x + 100y = 333 - - - -- - -- - -- -1

The next month, 400 units of electricity and 150 units of gas were used for a total cost of $286. This is expressed as

400x + 150y = 286 - - - - - - - - - --2

Multiplying equation 1 by 400 and equation 2 by 500, it becomes

200000x + 40000y = 133200

200000x + 75000y = 143000

Subtracting, it becomes

- 35000y = - 9800

y = - 9800/- 35000

y = 0.28

Substituting y = 0.28 into equation 2, it becomes

400x + 150 × 0.28 = 286

400x = 286 - 42 = 244

x = 244/400 = 0.61

7 0

3 years ago

You have fit a regression model with two regressors to a data set that has 20 observations. The total sum of squares is 1000 and

Llana [10]

Answer:

Hence the adjusted R-squared value for this model is 0.7205.

Step-by-step explanation:

Given n= sample size=20

Total Sum of square (SST) =1000

Model sum of square(SSR) =750

Residual Sum of Square (SSE)=250

The value of R ^2 for this model is,

R^2 = \frac{SSR}{SST}

R^2 = 750/1000 =0.75

Adjusted $R^2$ :

$Adjusted R^2 =1- \frac{(1-R^2)\times(n-1)}{(n-k-1)}$

Where k= number of regressors in the model.

$Adjusted R^2 =1-(19\times 0.25/((20-2-1)) = 0.7205$

3 0

3 years ago

A collection of dimes and quarters has a total value of five dollars and contains 29 coins. How much of each kind of coin are th

Feliz [49]

Answer:

15 dimes and 14 quarters.

Step-by-step explanation:

Let q represent number of quarters and d represent number of dimes.

We have been given that a collection of dimes and quarters contains 29 coins. We can represent this information in an equation as:

$q+d=29...(1)$

$q=29-d...(1)$

We know each dime is worth $0.10 and each quarter is worth $0.25.

We are also told that the total value of coins is $5. We can represent this information in an equation as:

$0.25q+0.10d=5...(2)$

Upon substituting equation (1) in equation (2), we will get:

$0.25(29-d)+0.10d=5$

$7.25-0.25d+0.10d=5$

$7.25-0.15d=5$

$7.25-7.25-0.15d=5-7.25$

$-0.15d=-2.25$

$d=\frac{-2.25}{-0.15}$

$d=15$

Therefore, there are 15 dimes in the collection.

Upon substituting $d=15$ in equation (1), we will get:

$q=29-d\Rightarrow 29-15=14$

Therefore, there are 14 quarters in the collection.

4 0

3 years ago