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3 years ago

Convert the repeating decimal 0.7777777..... into a fraction in the simplest form.

Mathematics

2 answers:

viktelen [127]3 years ago

4 0

Answer: 7/9

Step-by-step explanation:

Talja [164]3 years ago

4 0

Answer:

7/10

Step-by-step explanation:

because you take the 7 in the tenths place and put the 7 over 10

like this:

it equals 7/10

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Suri is buying fruit to make a fruit salad.She buys x pounds of strawberries that cost $3.99 per pound and y pound of blueberrie

Scilla [17]

Answer: Cost of strawberries and blueberries in the fruit salad,

C= 3.99x +4.99y

Step-by-step explanation:

Let the amount of strawberry be x pounds

Let the amount of blueberries be y

The fruit salad contains x pounds of strawberry and y pounds of blueberries

Cost of strawberries and blueberries in the fruit salad ,

C= 3.99x +4.99y

This is the algebraic expression to represent this situation.

8 0

3 years ago

If 20+15=24 64+13=42 Then 11+28=?

Rus_ich [418]

2+0+1+5x3= 24 and
6+4+1+3x3=42 than
1+1+2+8x3=36

Final Answer 36

:D Welcome

5 0

3 years ago

You are planning to plant a triangular garden in your backyard, as shown. You plan to put up a fence around the garden to keep o

drek231 [11]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete has the figure of the triangle is not given.

However, the following steps will guide you.

To solve this question;

you need the lengths of the threes sides of the triangular fields

Represent these lengths with a, b and c

Next;

Sum these lengths together;

This gives the required length of fencing

$Length = a + b + c$

Take for instance;

$a =4;\ b = 3;\ c = 5$

The required length of fence would be

$Length = 4 + 3 + 5$

$Length = 12\ units$

Apply these steps and you'll get your answer

8 0

4 years ago

What is the lateral area of the rectangular prism?

weeeeeb [17]

Area of rectangle prism, to find the answer, use this formula: 2 x ( h x d + h x w + d x w )

So it would look like this: 2 x ( 12 x 6 + 12 x 7 + 6 x 7 ) = 396

I would say the answer is B. 396 in2

Hope I helped ; )

4 0

3 years ago

A certain transportation system of buses and commuter trains is heavily utilized so that it is not practical to check every trav

IRINA_888 [86]

Answer:

$0.0864 < p< 0.1358$

We are confident (95%) that the true proportion of people admitted they did not buy a ticket is betwen 0.0864 and 0.1358.

Step-by-step explanation:

1) Data given and notation

n=621 represent the random sample taken

X=69 represent the people admitted they did not buy a ticket

$\hat p=\frac{69}{621}=0.111$ estimated proportion of people admitted they did not buy a ticket

$\alpha=0.05$ represent the significance level (no given, but is assumed)

z would represent the statistic

p= population proportion of people admitted they did not buy a ticket

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

2) Confidence interval

The confidence interval would be given by this formula

$\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

For the 95% confidence interval the value of $\alpha=1-0.95=0.05$ and $\alpha/2=0.025$ , with that value we can find the quantile required for the interval in the normal standard distribution.

$z_{\alpha/2}=1.96$

And replacing into the confidence interval formula we got:

$0.111 - 1.96 \sqrt{\frac{0.111(1-0.111)}{621}}=0.0864$

$0.111 + 1.96 \sqrt{\frac{0.111(1-0.111)}{621}}=0.1358$

And the 95% confidence interval would be given (0.0864;0.1358).

$0.0864 < p< 0.1358$

We are confident (95%) that the true proportion of people admitted they did not buy a ticket is betwen 0.0864 and 0.1358.

3 0

3 years ago