All categories

3 years ago

Is this right? plz help

Mathematics

1 answer:

Viefleur [7K]3 years ago

3 0

9514 1404 393

Answer:

one-story: 10 doors
two-story: 13 doors

Step-by-step explanation:

Let o and t represent the numbers of doors in a one-story and a two-story house, respectively.

2o +t = 33 . . . . . . . . west-side doors

8o +t = 93 . . . . . . . . east-side doors

6o = 60 . . . . . subtract the first equation from the second

o = 10

2(10) +t = 33 . . . . substitute for o in the first equation

t = 13 . . . . . . . . subtract 20

Each one-story house has 10 doors, and each two-story house has 13 doors.

You might be interested in

Ayo i took yo girl wit yo ugly ahh

tresset_1 [31]

Answer:

huheruyfb uhm

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Find the sum in simplest form 7/18 + 1/3+ 5/6

Gnom [1K]

Answer:

14/9

Step-by-step explanation:

7/18 + 1/3+ 5/6

1/3 can also be written as 6/18

5/6 can also be written as 15/18

7/18 + 6/18 + 15/8 = 28/18

28/18 can be simplified to 14/9

Hope this helps!

8 0

3 years ago

Read 2 more answers

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a rando

Lisa [10]

Answer:

$m=\frac{2506.833}{604.833}=4.1447$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833$

$\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833$

And we can find the intercept using this:

$b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644$

So the line would be given by:

$y=4.1447 x +44.644$

Step-by-step explanation:

$m=\frac{S_{xy}}{S_{xx}}$

Σx = 77, Σy = 587, Σx2 = 1593, Σy2 = 70,533, and Σxy = 10040.

Where:

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}$

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}$

With these we can find the sums:

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=1593-\frac{77^2}{6}=604.833$

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=10040-\frac{77*587}{6}=2506.833$

And the slope would be:

$m=\frac{2506.833}{604.833}=4.1447$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833$

$\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833$

And we can find the intercept using this:

$b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644$

So the line would be given by:

$y=4.1447 x +44.644$

5 0

3 years ago

Vous

Brums [2.3K]

Answer:

I would say A because 6:3 can only equal 1/3.

Step-by-step explanation:

It would help if you formatted a bit better though. As the choices are not clear. ^^

5 0

3 years ago

What is the answer to this?

Jet001 [13]

The gradient of the given graph is 1.5

<h3>Calculating Gradient </h3>

From the question, we are to determine the gradient of the graph

Gradient is given by the formula

$m = \frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

Where m is the gradient

Picking the points (-2, -2) and (2, 4) on the line

Then,

x₁ = -2

y₁ = -2

x₂ = 2

y₂ = 4

Putting the parameters into the equation, we get

$m = \frac{4--2}{2--2}$

$m = \frac{4+2}{2+2}$

$m = \frac{6}{4}$

m = 1.5

Hence, the gradient of the given graph is 1.5

Learn more on Calculating gradient here: brainly.com/question/21806111

#SPJ1

7 0

2 years ago