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2 years ago

8

You are building a room that is 5.5 m long and 3.5 m wide. The scale on the architect's drawing is 1 cm: 2.5 m. What is the leng

th of the room on the drawing?

2 answers:

Serga [27]2 years ago

6 0

Answer:

i think its 3cm but i may be wrong

Step-by-step explanation:

how many attemps do u have on your test?

Vesnalui [34]2 years ago

6 0

I’m pretty sure 3cm could be wrong sorry if it is

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What is the slope of this line of best fit?

Bas_tet [7]

Answer:

The slope of the line of best fit is $\frac{-6}{7}$ ⇒ 2nd option

Step-by-step explanation:

The formula of the slope of a line is $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

<em>To find the slope of the best line fit choose two points their positions make the number of the points over the line equal to the number of the points below the line</em>

From the attached graph points (1 , 9) and (8 , 3) are the best choice

∵ The line passes through points (1 , 9) and (8 , 3)

∴ $x_{1}$ = 1 and $x_{2}$ = 8

∴ $y_{1}$ = 9 and $y_{2}$ = 3

- Substitute them in the formula of the slope

∴ $m=\frac{3-9}{8-1}=\frac{-6}{7}$

∴ The slope of the line of best fit is $\frac{-6}{7}$

6 0

3 years ago

Lucy’s chocolate bar is 54% cocoa. If the weight of the chocolate bar is 54 grams, how many grams of cocoa does it contain? Roun

Masteriza [31]

Answer:

The chocolate bar contains 29.2 grams of cocoa.

Step-by-step explanation:

Given that Lucy’s chocolate bar is 54% cocoa and the weight of the chocolate bar is 54 grams.

Hence, the amount of cocoa in the chocolate bar is given by

54% of 54 grams

54% percentage means 54/100 = 0.54

Hence, the amount of cocoa in the chocolate bar is

$0.54\times54\\=29.16$

When rounded to the nearest tenth, 29.16 should be equal to 29.2

Hence, the chocolate bar contains 29.2 grams of cocoa.

4 0

2 years ago

HELP ASAP PLEASE Which is the correct way to model the equation 5 x + 6 = 4 x + (negative 3) using algebra tiles? 5 positive x-t

vichka [17]

Play10x9 than it =90

5 0

2 years ago

Read 2 more answers

If O N = 8 x − 8 , L M = 7 x + 4 , N M = x − 5 , and O L = 3 y − 6 , find the values of x and y for which LMNO must be a paralle

posledela

Answer:

$x=12\\y=\frac{13}{3}$

Step-by-step explanation:

For it to be a parallelogram, opposite sides have to be of same length.

OL = NM, and
ON = LM

Using the expressions given, we can make 2 equations:

<u>Equation 1:</u>

$OL=NM\\3y-6=x-5\\-x+3y=1$

<u>Equation 2:</u>

$ON=LM\\8x-8=7x+4\\$

<em>Solving equation 2, we have x:</em>

$8x-8=7x+4\\8x-7x=4+8\\x=12$

<em>Plugging this value of x into equation 1, we can solve for y:</em>

$-x+3y=1\\-(12)+3y=1\\-12+3y=1\\3y=13\\y=\frac{13}{3}$

So,

$x=12\\y=\frac{13}{3}$

7 0

3 years ago

Which expressionuses the associatice property to make it easier to evaluate 6 (1/3 x 7/5)

ozzi

Answer:

Step-by-step explanation:

6(1/3X7/5)=(6X1/3)X7/5

6X7/15=6/3X7/5

14/5=14/5 (ASSOCIATIVE LAW)

4 0

3 years ago