All categories

3 years ago

Find the error in the problem below

Mathematics

1 answer:

qaws [65]3 years ago

7 0

Answer:

You aren't supposed to add 3k

Step-by-step explanation:

3k is a positve number. So instead of adding you have to subtract to be able to move on. Correct way shown below. Once you get this step wrong your answer will also be wrong. At the end you also need to divide

19-2k= 3k-1

-3k -3k

19-5k= -1

-19 -19

-5k= -20

-5/-5= -20/-5

k=4

You might be interested in

HRRY UP A$AP EZ question turn this number to scientific notation 6,791,000 & HRRY UP PLZ

lidiya [134]

Move the decimal places, the answer is 6.7 x 10^6

3 0

3 years ago

The lengths of a particular snake are approximately normally distributed with a given mean mu = 15 in. and standard deviation si

Helga [31]

The percentage of the snakes is longer than 16.6 in. with a mean of 15 in. and a standard deviation of 0.8 in. is 2.275%.

<h3>What is a normal distribution?</h3>

It is also called the Gaussian Distribution. It is the most important continuous probability distribution. The curve looks like a bell, so it is also called a bell curve.

The z-score is a numerical measurement used in statistics of the value's relationship to the mean of a group of values, measured in terms of standards from the mean.

The lengths of a particular snake are approximately normally distributed with a given mean = 15 in. and standard deviation = 0.8 in.

Then the percentage of the snakes is longer than 16.6 in. will be

$z = \dfrac{ x - \mu }{ \sigma }\\\\z = \dfrac{16.6-15}{0.8}\\\\z = 2$

Then we have

$\rm P(x > 16.6) = P(z > 2) = 0.02275 \ or \ 2.275 \%$

More about the normal distribution link is given below.

brainly.com/question/12421652

6 0

2 years ago

The equation y-2/3=(x-1/4) is written in point-slope from what equation in slope-intercept from

Maksim231197 [3]

Answer:

y=x+5/12

good luck...

3 0

2 years ago

Find the measure of angle A (please help!!!)

mel-nik [20]

Answer: 41 degrees

Step-by-step explanation:

so, we know that a triangle is 180 degrees. since we know that one angle is 80 degrees, we can subtract that from the equation. now, we are trying to find what X is so that we can find the angle. here is how i did it:

i rewrote it and removed the parentheses.

4x + 1 + 4x + 19 = 100

then, i collected like terms and calculated it.

8x + 20 = 100

then, i moved the constant to the right.

8x = 100 - 20

then, i simply calculated it.

8x = 10

solution: x = 10

so, we just insert X into the angle for A. that gets us 4(10) + 1 = angle A

40 + 1 = angle A, hence angle A = 41 degrees.

7 0

3 years ago

The distance between two subway stations is 3 miles. If a train

dolphi86 [110]

Answer: 3

Step-by-step explanation:

Divide every mile is one minute

6 0

3 years ago