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2 years ago

FRAME AN EQUATION AND SOLVE

1 answer:

7 0

Here
Length = x+3
Breadth = x
We know
Perimeter of reatangle = 2(l+b)
Or 34 = 2( x+3+x)
Or 17 = 2x+3
Or 14 =2x
Or x= 7

Therefore
Length = 10 and breadth = 7 cm
Thank you
From ayanas

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A trail is 2 miles long. There is a marker every 1/8 mile. How many markers are there?

attashe74 [19]

Answer:

Step-by-step explanation:

Number of Markers =

$2 \div \frac{1}{8} \\ = 2 \times 8 \\ = 16$

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3 years ago

The orbit of a comet in a video game can be defined by the equation (x - 56)^2/150 + (y - 28)^2/256 = 1. Which of the following

ss7ja [257]

Answer:

C & E

Step-by-step explanation:

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3 years ago

All the students in a school were weighed. Their average weight was 30.8 kilograms, and their total weight was 16,293.2 kilogram

Zinaida [17]

Answer: 529 students

Step-by-step explanation:

To solve this, we will be using the formula for finding averages:

> (total sum of student weights) ÷ (total sum of students) = (average of student weights)

Plugging in the values that are given in the problem, you get:

> 16,293.2 ÷ x = 30.8

Where x is equal to the total sum of students. From here, it's a simple equation to isolate x, and find out what numerical value x is equal to. In case you are unsure how to do this, I've created a clear step by step process for how to do this (NOTE: The slash represents division, while the asterisk represents multiplication.):

> 16,293.2 / x = 30.8

> (16,293.2 / x) * x = (30.8) * x

> 16,293.2 = 30.8 * x

> (16,293.2) / 30.8 = (30.8 * x) / 30.8

> 529 = x

In total, there are 529 students in the school.

7 0

2 years ago

If a new data point at 12 is added to the graph , which will be true ?

Orlov [11]

Answer:

3. The mean will increase more than median, but both will increase.

Step-by-step explanation:

We have been given a dot plot. We are asked to find the true statement, if a new data point at 12 is added to our given dot plot.

Since we know that an large valued outlier affects mean more than median, so mean will increase more than median.

Let us check this using our given information. Our data set before adding 12 is:

1, 2, 2, 2, 3, 4, 4, 4, 5.

We can see that our data set has odd number (9) of data points, so median will be the value of 5th term, that is 3.

$\text{Mean}=\frac{1+2+2+2+3+4+4+4+5}{9}$

$\text{Mean}=\frac{27}{9}=3$

Therefore, mean of our data set is 3.

Upon adding a data point at 12, our new data set will be:

1, 2, 2, 2, 3, 4, 4, 4, 5, 12.

Now our data set has 10 terms, so median will be the average of 5th and 6th term.

$\text{Median}=\frac{3+4}{2}$

$\text{Median}=\frac{7}{2}=3.5$

Therefore, the median of new data set will be 3.5.

$\text{Mean}=\frac{1+2+2+2+3+4+4+4+5+12}{10}$

$\text{Mean}=\frac{39}{10}$

$\text{Mean}=3.9$

Therefore, mean of new data set will be 3.9.

Upon looking at our given statements we can see that 3rd statement is true as mean and median both increased after adding 12 to our data set, but mean increased more that median. Mean and median before adding 12 was 3; but after adding 12 median became 3.5, while mean became 3.9 (which is greater than mean).

3 0

2 years ago

Read 2 more answers

Hakim Buy some socks that cost five dollars each and two shirts that. cost $12 . The cost of hakim total purchase is $39 . Write

suter [353]

This is the equation
$39 = (2)12 + 5n$

and the solution is:
$39 = 12(2) + 5n \\ 39 = 24 + 5n \\ 39 - 24 = 5n \\ 15 = 5n \\ n = 3$
he bought 3 socks

good luck

3 0

3 years ago