All categories

3 years ago

The length of a line is y centimeters write down an expression, in terms of y, for the length of the line in milimiters

Mathematics

2 answers:

Ivan3 years ago

7 0

Answer:

10y mm

Step-by-step explanation:

$length \: of \: line = y \: cm \\ \therefore \: length \: of \: line = y \times 10 \: mm \\ \therefore \: length \: of \: line =10 y \: mm$

Nonamiya [84]3 years ago

3 0

Answer:

y * 0.1

Step-by-step explanation:

You might be interested in

Out of 30 students are surveyed 17 have a dog based on these results predict how many of the 300 students in the school have a d

zubka84 [21]

$From\ proportion:\\
30\ students\ 17\ dogs\\
300\ students\ x\ dogs\\\\Cross\ multiplication\\
30x=300*17\\
30x=5100\ \ \ | divide\ by\ 30\\
x=170\\\\
There\ will\ be\ 170\ dogs\ for\ 300\ students.$

5 0

2 years ago

Read 2 more answers

Need help pls thank you in advance

ira [324]

Answer:

$\textsf{Mean}\:\overline{X}=\sf \dfrac{\textsf{sum of all the data values}}{\textsf{total number of data values}}$

$\implies \sf Mean\:(Nilo)=\dfrac{5+6+14+15}{4}=\dfrac{40}{4}=10$

$\implies \sf Mean\:(Lisa)=\dfrac{8+9+11+12}{4}=\dfrac{40}{4}=10$

<h3>Standard Deviation</h3>

$\displaystyle \textsf{Standard Deviation }s=\sqrt{\dfrac{\sum X^2-\dfrac{(\sum X)^2}{n}}{n-1}}$

$\begin{aligned}\displaystyle \textsf{Standard Deviation (Nilo)} & =\sqrt{\dfrac{(5^2+6^2+14^2+15^2)-\dfrac{(5+6+14+15)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{482-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{82}{3}}\\\\& = 5.23\end{aligned}$

$\begin{aligned}\displaystyle \textsf{Standard Deviation (Lisa)} & =\sqrt{\dfrac{(8^2+9^2+11^2+12^2)-\dfrac{(8+9+11+12)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{410-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{10}{3}}\\\\& = 1.83\end{aligned}$

<h3>Summary</h3>

Nilo has a mean score of 10 and a standard deviation of 5.23.

Lisa has a mean score of 10 and a standard deviation of 1.83.

The mean scores are the same.

Nilo's standard deviation is higher than Lisa's. Therefore, Nilo's test scores are more spread out that Lisa's, which means Lisa's test scores are more consistent.

5 0

1 year ago

Someone please help me with this!!

Paraphin [41]

PEMDAS tells us to use multiplication and division before addition and subtraction.

-5(8) ÷ 10 - 14 ÷ 7 - (-2)(3)

-40 ÷ 10 - 2 - -6

-4 - 2 + 6 two negatives make a positive so - - 6 = + 6

-6 +6

Answer: 0

3 0

2 years ago

If RS = 17, ST = x + 6, and RT = 3x - 5, What is ST.

tigry1 [53]

Answer:

ST = 20

Step-by-step explanation:

Line segment RS and segment ST must add up to line segment RT

Step 1: Define

RS = 17

ST = x + 6

RT = 3x - 5

Step 2: Set up equation

mRS + mST = mRT

17 + x + 6 = 3x - 5

Step 3: Solve for x

x + 23 = 3x - 5

23 = 2x - 5

28 = 2x

x = 14

Step 3: Find mST

ST = x + 6

ST = 14 + 6

ST = 20

3 0

3 years ago

What is the 100 nearest 513

ololo11 [35]

Answer: 500

Step-by-step explanation:

it is closest and is under 550. if it were 551 through 599 it would be 600

6 0

3 years ago