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Yanka [14]
3 years ago
5

Emma got 90 percent of the questions on her math test correct . If she answered 27 of them right how many questions were there o

n the test
Mathematics
1 answer:
Nutka1998 [239]3 years ago
6 0
30 question on the test
You might be interested in
JA manufacturer determines that the cost of making a computer component is ​$3.161616. Write the repeating decimal cost as a fra
Bad White [126]

Answer:

The repeating decimal cost

a) As a fraction = $\frac{3161616}{1000000}

b) As a mixed number = $ 3\frac{161616}{1000000}

Step-by-step explanation:

The cost of making a computer component

= $3.161616

= $ 3 + 0.161616

Looking at the repeating decimal it is in 6 decimal places, hence to convert it to a fraction,

0.161616/ 1000000 × 1000000

= 161616/1000000

Therefore, the cost of making  the  computer component =

$3 + $161616/1000000

Step 1

We convert to a fraction

$3 + $161616/1000000

We find the LCM = 1000000

($3 × 1000000)+ ($161616× 1)/1000000

3000000 + 161616/1000000

= $ (3161616/1000000)

As a Mixed number = 3\frac{161616}{1000000}

8 0
3 years ago
A pet store has 9 puppies and 48 kittens.
Flauer [41]

that would be 48/9 because it would be kittens(48) to puppies(9) then simplified to 16/3.

5 0
3 years ago
Read 2 more answers
Please hellp<br><br> Will give 100 extra point if right and brainliest
mixer [17]

Answer:

1) 500     2) $ 1000 debt    3) $350    4) $2500 debt

Step-by-step explanation:

profit = .5x -250  

1)  O      = .5x -250

250 = .5x

500 = x      number to break even

2)   f(900) =  .5 (900) -250 =  $200

       from the graph  g(200) = total debt = $1000

3)   f(x) = -75  = .5x-250    results in    x = $ 350

4)    f(500) = .5(500) - 250 = 0  

      from the graph, this corresponds to total debt g (f(500) = $2500 debt

       

7 0
2 years ago
A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit
sergiy2304 [10]

Answer:

95% Confidence interval: (39.43, 61.58)

Step-by-step explanation:

We are given the following in the question:

Sample mean, \bar{x} = $50.50

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation = 20

95% Confidence interval:

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.1447  

=50.50 \pm 2.1447(\dfrac{20}{\sqrt{15}} ) \\\\= 50.50 \pm 11.0751 \\= (39.4249,61.5751)\\\approx (39.43, 61.58)  

95% Confidence interval: (39.43, 61.58)

8 0
3 years ago
The width of a rectangular swimming pool is 14 meters less than the length, and the perimeter is 68 meters. Find the Dimensions.
Misha Larkins [42]
W = L - 14

4L - 28 = 68

L = 24

W = 14

4 0
3 years ago
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