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3 years ago

What is x and y 2x-3y=-1,y=x-1?

Mathematics

1 answer:

kenny6666 [7]3 years ago

7 0

Answer:

Step-by-step explanation:

2x-3x[x-1]

=2x-3x+1

=-x+1

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Order the numbers 0.64, 2/3, 65%, and <br> 7/10 from least to greatest.

ExtremeBDS [4]

Answer:

0.64, 65%, 2/3, 7/10.

Step-by-step explanation:

2/3=0.667

65%=0.65

7/10=0.7

From least to greatest:

0.64, 65%, 2/3, 7/10

6 0

3 years ago

Read 2 more answers

The rectangle below has a height of 5 meters and a base of 8 meters. What is the area of the triangle inscribed inside?

pogonyaev

Answer:

Step-by-step explanation:

formula for triangle= 1/2*base*height

=1/2*8*5

=20

8 0

3 years ago

HELP ME PLZZ I NEED HELP WITH THIS !!

Mice21 [21]

Answer:

The answer is C.

Step-by-step explanation:

When you look at the number line for C, you can see that it starts from positive 2 and shows the distance all the way to -5.

8 0

3 years ago

The cost , c(x), for a taxi ride was given by c(x) =2×+4.00, where x is the number of minutes. What does the slope mean for this

Readme [11.4K]

Hi,

c(x) is a linear function, if you graph it, you obtain a straight line.

The slope is the coefficient of x, therefore the slope is 2.

When the ride starts (x = 0), the start cost is 4 dollars (or whatever the currency is), then every minute spent on the moving taxi, as many as 2 dollars need to be paid to taxi driver.

I hope these help.

Green eyes.

4 0

3 years ago

Suppose a certain study reported that 27.7% of high school students smoke.

Norma-Jean [14]

<u>Given</u>:

Probability of student smoke,

P = 27.7%

= 0.277

Number of students,

n = 632

$q = 1-p$

$=1-0.277$

$=0.723$

(i)

Here,

Number of students (n) = 60

then,

⇒ $n_P=60\times 0.277$

$=16.62$

⇒ $n_q=60\times 0.723$

$=43.38$

We can see that $n_P > 10$ and $n_q>10$ so the normal approximation condition are met.

Now,

$\mu = n_P= 16.62$

$\sigma = \sqrt{n_{Pq}}$

$= \sqrt{60\times 0.277\times 0.723}$

$=3.9664$

Now,

⇒ $P(X$

$=P(Z_{18.5})$

The Z-score is:

= $\frac{18.5-16.62}{3.4664}$

= $0.5423$

hence,

The probability will be:

⇒ $P(Z_{18.5}) = 0.7062$

or,

⇒ $P(Z$

(ii)

Here,

Number of students (n) = 75

$\mu = n_P = 75\times 0.277$

$=20.775$

$\sigma = \sqrt{n_{Pq}}$

$=\sqrt{75\times 0.277\times 0.723}$

$=3.8756$

Now,

⇒ $P(X>17) = P(X> 17.5)$

$=1-P(X \leq 17.5)$

$=1-P(Z_{17.5})$

The Z-score is:

= $\frac{17.5-20.775}{3.8756}$

= $-0.9740$

then, $P(Z_{17.5}) = 0.165$

hence,

The probability will be:

⇒ $P(X>17) = 1-0.165$

$=0.835$

Learn more about probability here:

brainly.com/question/9825651

4 0

3 years ago