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prohojiy [21]
3 years ago
5

Expand the following: a.x(x+5) b.x(3x-1) c.2x(2x+3) d.5x(x-3y)

Mathematics
1 answer:
trasher [3.6K]3 years ago
8 0
It would A because that’s obviously the right answer.
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the slope-intercept form of an equation of the line perpendicular to the graph of x – 3y = 5 and passing through (0, 6).
Leona [35]

Answer:

y = - 3x + 6

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Rearrange x - 3y = 5 into this form

Subtract x from both sides

- 3y = - x + 5 ( divide all terms by - 3 )

y = \frac{1}{3} x - \frac{5}{3}  ← in slope- intercept form

with slope m = \frac{1}{3}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{1}{3} } = - 3

Note the line crosses the y- axis at (0, 6) ⇒ c = 6

y = - 3x + 6 ← equation of perpendicular line

3 0
3 years ago
In science class, the average score on a lab report is 87 points, with all students scoring within 1.8 points of the average. If
crimeas [40]

The equations which represents the minimum and maximum scores of the students is; x = 87 ± 1.8.

<h3>Which equations represents the minimum and maximum possible scores of each student?</h3>

According to the task content, the

Average score of the students in the science class is; 87 points

All students are within 1.8 points of the average,

it therefore follows from the task content that the

minimum score is;

= 87 -1.8

= 85.2

maximum score is;

= 87+1.8

= 88.8 points.

Read more on average and deviation;

brainly.com/question/285157

#SPJ1

8 0
2 years ago
use a numerical method to estimate the value of the limit (if it exists.) Lim e^5t -1 /t as x tends to 0 from both sides​
charle [14.2K]

Hello from MrBillDoesMath!

Answer:

5

Discussion:

Consider the expansion of e^x:

e^x = 1 + x + x^2/2 + x^3/6 +......            =>      replace x by 5t

e^(5t) = 1 + (5t)  + (5t)^2/2 + ....              =>      subtract 1 from both sides

e^(5t) - 1 = (5t) + (5t)^2/2+....                  =>      divide both sides by t

(e^(5t) -1)/ t = 5 + (25/2)  t +....

so as t ends to 0  the quotient tends to    

5 + (25/2)0 + (other terms) *0   ->   5

Thank you,

MrB

8 0
3 years ago
Write an equation of the line with the given slope, m, and y-intercept (0,b).<br><br> m = 4, b = 9
Zarrin [17]

Answer:

y=4x+9

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The directions for a jewelry-making pattern call for a chain 358 inches long. When shopping for a chain, the following choices w
kobusy [5.1K]

Answer:

the correct pattern is 400 inches long

4 0
3 years ago
Read 2 more answers
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