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3 years ago

12 NEED HELP ASAP WILL GIVE BRAINLY

Mathematics

1 answer:

Evgen [1.6K]3 years ago

8 0

Answer:

x = 4

8(4) - 2 = 30

15(4) = 60

All triangles equal 180 degrees and there is already a right angle. 60 plus 0 is 90, and 90 plus 90 (or 90 times 2) is 180

60 + 30 = 90

90 + 90 = 180

Step-by-step explanation:

You might be interested in

Find the number that makes the ratio equivalent to 1:6. 9:__

klio [65]

Okay, what do we know?

1*6=6, right?

Well, then 9*6=? (you should know your math facts by now)

3 0

2 years ago

Solve for x: (3x−2)(2x+3)=0

Zanzabum

(3x−2)(2x+3)=0
(3x−2)=0; x = 2/3
(2x+3)=0; x = -3/2

answer
x = -3/2 and x = 2/3

3 0

3 years ago

Read 2 more answers

Hello, Brainly community!

ioda

Answer:

(B) $\displaystyle \frac{W(3.1) - W(2.9)}{0.2}$

General Formulas and Concepts:

Calculus

Limits

Derivatives

The definition of a derivative is the slope of the tangent line.

Derivative Notation

Instantaneous Rates

Tangent Line: $\displaystyle f'(x) = \frac{f(b) - f(a)}{b - a}$

Step-by-step explanation:

Since we are trying to find a rate at which W(t) changes, we must find the derivative at t = 3.

We are given 2 close answer choices that would have the same numerical answer but different meanings:

(A) $\displaystyle \lim_{t \to 3} W(t)$
(B) $\displaystyle \frac{W(3.1) - W(2.9)}{0.2}$

If we look at answer choice (A), we see that our units would simply just be volume. It would not have the units of a rate of change. Yes, it may be the closest numerically correct answer, but it does not tell us the rate at which the volume would be changing and it is not a derivative.

If we look at answer choice (B), we see that our units would be cm³/s, and that is most certainly a rate of change. Answer choice (B) is also a derivative at t = 3, and a derivative tells us what rate something is changing.

∴ Answer choice (B) will give us the best estimate for the value of the instantaneous rate of change of W(t) when t = 3.

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Differentiation

Book: College Calculus 10e

8 0

2 years ago

Kelly has a pool in her backyard, and she wants to build a fence around the entire area. Kelly's backyard is 14 meters wide and

bulgar [2K]

Answer:

$384.54

Step-by-step explanation:

Dimensions of the backyard is 14 m by 15 m

The length of the fence is the perimeter of the backyard.

P = 2(l +w)
P = 2(15 + 14) = 2(29) = 58 m

One meter of the fence costs $6.63

Cost of the entire fence is:

58*$6.63 = $384.54

6 0

3 years ago

Read 2 more answers

Which line has a slope of 1, and which has a slope of 2?

aleksley [76]

Answer:

Line "L" has the slope of 1 and line "K" has the slope of 2.

In order to graph a line with the slope of $\frac{1}{3}$ think of the numerator as the "rise" (how much you move up/down on the y-intercept) and the denominator as the "run" (how much you move to the side on the x-intercept)

Step-by-step explanation:

A slope of "1" is simply $\frac{1}{1}$ so you rise up one and move to the right once. This clearly demonstrated on line "L".

A slope of "2" is $\frac{2}{1}$ so you rise up two and move to the right once, as is demonstrated on line "K".

For the 2nd question, line "A" will have a slope of $\frac{1}{3}$ therefore it will move up once and then to the side three times. It will look like the image attached to this answer.

I hope this helped! Feel free to ask questions if needed!

6 0

3 years ago