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3 years ago

A stray dog ate 28 of your muffins. That was 4/7 of them. How many are left?

Mathematics

2 answers:

Grace [21]3 years ago

8 0

4/7 of what is 28....
4/7x = 28
x = 28 * 7/4
x = 196/4 = 49 total muffins

49 - 28 = 21 <== there are 21 muffins left

olasank [31]3 years ago

5 0

Answer:

the correct answer is 21 muffins

Step-by-step explanation:

7/7 = 49

4/7 = 28

Just remember to multiply and divide with fractions

so 3/7 would = 21

i hope i helped

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A sport analyst wants to determine the mean salary of a Baseball player for 2015. He believes an estimate of this average salary

djyliett [7]

Answer:

The large sample size 'n' = 199.6569≅ 200

Step-by-step explanation:

Step(i):-

Given Standard deviation of salary for all baseball players for 2015 is about $5,478,384.55

Standard deviation of of salary for all baseball players for 2015

(S.D ) σ = $5,478,384.55

Given estimate of this average salary for all baseball players for 2015

= $497,000

Given Margin of error of error is = $497,000

Level of significance ∝ = 80%

The critical value Z₀.₂₀ = 1.282

Step(ii):-

Margin of error of error is determined by

$M.E = \frac{Z_{0.20} S.D}{\sqrt{n} }$

$497,000 = \frac{1.282 X 5,478,384.55}{\sqrt{n} }$

Cross multiplication , we get

$\sqrt{n} = \frac{1.282 X 5,478,384.55}{497,000 }$

On calculation , we get

√n = 14.13

Squaring on both sides, we get

n = 199.6569

Conclusion:-

The large sample size 'n' = 199.6569≅ 200

7 0

3 years ago

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krek1111 [17]

Answer:

18 ft. By 13 ft.

Step-by-step explanation:

8 0

3 years ago

The following are the ages (years) of 5 people in a room:

juin [17]

Answer:

Step-by-step explanation:

14+14+18+18+22=86

6*16=96

96-86=10

7 0

3 years ago

Read 2 more answers

An amateur soccer ball is priced at

Oduvanchick [21]

Answer: $26

Step-by-step explanation:

If $19.50 is 3/4, we need to find 4/4.

3/4 -> 0.75

4/4 -> 1

We will set up a proportion and solve.

$\frac{19.5}{0.75} =\frac{x}{1}$

19.5 = 0.75x

26 = x

The professional ball is $26.

4 0

2 years ago

Read 2 more answers

Which equation is y = â€""6x2 3x 2 rewritten in vertex form?.

Ber [7]

The vertex form needed is :

$-6(x-0.25)^2 +2.375$

Given the equation:

$-6x^2 + 3x + 2\\$

The vertex form of $f(x) = ax^2 + b(x) + c$ is given by:

$f(x) = a(x-h)^2 + k$

Here, (h,k) is the vertex of the parabola equation given.

Conversion will go like this:

$-6x^2 + 3x + 2\\= -6(x^2 - 0.5x) + 2\\= -6(x^2 -0.5x + 0.0625 - 0.0625) + 2\\= -6(x^2 -0.5x + 0.0625) + 2 +0.375\\= -6(x-0.25)^2 + 2.375\\\\$

This is the resultant vertex form.

Thus the vertex form needed is :

$-6(x-0.25)^2 +2.375$

Learn more here:

brainly.com/question/15165354

6 0

3 years ago