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ki77a [65]
3 years ago
7

Question Progress

Mathematics
1 answer:
son4ous [18]3 years ago
6 0

Question:

Sue is thinking of a number 3/8 of 88 = 1/3 of her number

what number is she thinking of

Answer:

x = 99

Step-by-step explanation:

Represent the number with x.

So, we have:

\frac{3}{8} * 88 = \frac{1}{3} *x

Multiply through by 3

3 * \frac{3}{8} * 88 = \frac{1}{3} *x * 3

3 * \frac{3}{8} * 88 = x

3 * 3 * 11 = x

99= x

x = 99

<em>Hence, she is thinking of 99</em>

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Pls help for number 6
Vlad1618 [11]
A: 45x + 30y = 1350
Since we don’t know how many adults and children are in the group, we use x and y

b: x-intercept= 30 y-intercept=45
To find the x-intercept you need to isolate the variable. 45x/45 = x
Then you do the same thing to the other side. 1350/45 = 30
So x=30
Same thing with the y-intercept.
30y/30 = y 1350/30 = 45
y=45 (Not really sure what it means by “what they represent” but I thinks it’s that there are 30 adult tickets and 45 children tickets )

c: so our points are (30,0) and (0,45) so you would graph that.
To find how many children tickets were bought if there were 20 adult tickets just look at the photo I put. I don’t know how to explain this.


Hope this helps

7 0
3 years ago
Change this root into a power.
Nadusha1986 [10]

Answer:

3^2/5

Step-by-step explanation:

7 0
3 years ago
A test consists of 100 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean a
TEA [102]

Answer:  Mean = 20 and standard deviation = 4

Step-by-step explanation:

Let x represents the success of getting the correct answer.

Here, the total number of trials(n) = 100

The probability of getting the correct answer, p = 1/5

Thus, the mean of the number of correct answer,

\mu_x= np

\mu_x= 100\times 1/5

\mu_x= 20

Now, the standard deviation, \sigma_x= \sqrt{n\times p\times (1-p)}

\sigma_x= \sqrt{100\times 1/5\times 4/5}

\sigma_x= \sqrt{16}

\sigma_x= 4

Thus, First option is correct.



6 0
4 years ago
Around which line would the following cross-section need to be revolved to create a sphere?
masya89 [10]

Answer:

rotating around  y = 1 will make the sphere.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What's the equivalent
olga2289 [7]

9 1/2 = 19/2

(29/5) / (19/2)

When changing division to multiplication, flip the number (right hand side).

(29/5) * (2/19)

58/95

7 0
3 years ago
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