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2 years ago

Need help with solving a problem with elimination method

Mathematics

1 answer:

iren2701 [21]2 years ago

4 0

Yes 7x+2x=35 that’s the problem I need help with

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Complete the following statement.

solong [7]

Answer:

Hello dude

$- 1 \frac{21}{24} + 1 \frac{22}{24} = + \frac{1}{24}$

so it's positive

HAVE A NİCE DAY

Step-by-step explanation:

GREETİNGS FROM TURKEY ツ

7 0

2 years ago

Kyra observed that 85% of the students at a library liked reading mystery stories. If 30 students at the library did not like re

UkoKoshka [18]

It is said that 85% of the students liked reading mystery stories. This means the remaining 15% don't like to read these stories. If there are 30 students belonging to the second category, then the number of students who liked reading mystery stories is (30/0.15)*0.85 equal to 170 students out of 200 students.

6 0

2 years ago

PLEASE HELP!!! Write the equation of a line that goes through the point (6, 3) and is perpendicular to the line y = 4x + 1.

Tpy6a [65]

For this case we have that by definition, the equation of a line in the point-slope form is given by:

$y-y_ {0} = m (x-x_ {0})$

Where:

m: It is the slope of the line and $(x_ {0}, y_ {0})$ is a point through which the line passes.

We have the following equation of the slope-intersection form:

$y = 4x + 1$

Where the slope is $m = 4$

By definition, if two lines are perpendicular then the product of their slopes is -1.

Thus, a perpendicular line will have a slope:

$m_ {2} = \frac {-1} {m_ {1}}\\m_ {2} = \frac {-1} {4}\\m_ {2} = - \frac {1} {4}$

Thus, the equation will be of the form:

$y-y_ {0} = - \frac {1} {4} (x-x_ {0})$

Finally we substitute the given point and we have:

$y-3 = - \frac {1} {4} (x-6)$

Answer:

Option B

8 0

2 years ago

The Brown Office Rental Company has purchased a new computer for the secretary to use for customer requests. She can type 70 wor

Vladimir [108]

First you want to find how many words she types per hour.
There are 60 minutes in 1 hour.
So multiply 70 words/min times 60 min/ 1 hr to cancel out the minutes.
You will get 4200 words / hr
Then multiply 4200 by 4 and 5
use * as multiplication symbol
4200 words/hr * 4 = 16,800 words/hr
4200 words/hr * 5 = 21,000 words/hr
She will type 16,800 - 21,000 words/hr

So Your answer is going to be letter G

6 0

2 years ago

Please select the best answer and click submit Solve kx-4=9 for x

shepuryov [24]

Answer:

Option B. $x = \frac{13}{k}$ .