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Over [174]
2 years ago
5

A shop sells small chocolate bars and large chocolate bars the small chocolate bars are sold in packs of 4 large packets of choc

olate bars are sold in packs of 9 . On one day the number of packs of small chocolate bars sold : the number of packs of large chocolate bars sold =5:2 a total of 95 chocolate bars were sold work out the number of small chocolate-bars sold ? Plz reply quick I’ll vote ur answer brainiest
Mathematics
1 answer:
IrinaVladis [17]2 years ago
5 0

The number of small chocolate-bars sold is 272.

<h3>What is a ratio? </h3>

Ratio expresses the relationship between two or more numbers. It shows the number of times that one value is another value. The sign used to represent ratios is :.

<h3>What is the number of small chocolate bars sold?</h3>

The number of packs small chocolate bars sold = (ratio of he number of small chocolate bars sold / sum of ratios) x number of chocolate bars sold

(5/7) x 95 = 67.8 = 68

The number of  small chocolate bars sold = 68 x 4 = 272

To learn more about ratios, please check: brainly.com/question/25927869

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Jenna solved the equation 2x^2 +5x - 42 = 0 . She stated that the solutions to the equation were 7/2 and -6. Do you agree with J
mr_godi [17]

Answer:

Yes. Her solution is correct.

Step-by-step explanation:

Let's check if Jenna solution is correct:

To solve the equation 2x^2 +5x - 42 = 0, we can use Bhaskara's formula:

D = b^2 - 4ac = 25 + 4*2*42 = 25+336 = 361

sqrt(D) = 19

x1 = (-5 + 19)/4 = 14/4 = 7/2

x2 = (-5 - 19)/4 = -24/4 = -6

We must agree with Jenna's solution, because the values she found as solution are correct: with we replace these values of x in the equation, we will find 0 = 0, which is correct and proves that these values are the solution of the equation.

7 0
3 years ago
Read 2 more answers
Micah made a scale model of the Empire State building.The building has an actual height of 381 meters. Micah’s model used a scal
Marysya12 [62]

<em>Answer:</em>

<em>1cm = 50 </em>

<em>2 cm = 50 x 2 </em>

<em>3cm = 50 x 3 </em>

<em>and the inverse:50m = 50/50 = 1cm </em>

<em>100m = 100/50 = 2cm </em>

<em>150m = 150/50 = 3cm </em>

<em>381m = 381/ </em>

3 0
3 years ago
A professor using an open source introductory statistics book predicts that 10% of the students will purchase a hard copy of the
Likurg_2 [28]

Answer: The professor was not accurate with his hypothesis.

Null hypothesis: P1 = 12.5%, P2 = 42.5%, P3 = 45%

The alternate hypothesis: At least one proportion of the student will differ from the others.

Step-by-step explanation: To check if the professors hypothesis were inaccurate.

What percentage of student bought a hard copy of the book.

(25 ÷ 200) × 100 = 12.5%

What percentage of the student printed it from the web.

(85 ÷ 200) × 100 = 42.5%

What percentage of the students read it online.

(90 ÷ 200) × 100 = 45%

This means that the professor was not accurate with his hypothesis. Because the proportion of student in his hypothesis was not the same in the actual.

Therefore; the null hypothesis are

P1 = 12.5%, P2 = 42.5%, P3 = 45%

The alternative hypothesis will state that at least one of the proportion will be different from the others.

5 0
3 years ago
Which of the following has six faces?
Goryan [66]

Answer:

D

Step-by-step explanation:

Hexa means six, so a hexahedron is a figure with six faces. Therefore, choice D is the correct answer.

7 0
3 years ago
How many days dose it take Tim to clear 1 acre
maria [59]
Depends i need more info
3 0
3 years ago
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