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Levart [38]
3 years ago
8

The area of a circle depends on the radius. Use the equation A(r) =pi r2 to compute A(7). Round your answer to the nearest hundr

edth.
Mathematics
1 answer:
Colt1911 [192]3 years ago
5 0
The equation is given to compute A(7) = A(r) pi r²
7 = pi r²
r² = 7/pi
value of pi = 3.14
so,
r² = 7/3.14
r = √ (7/3.14)
r = 1.49
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Factor completely x2 + 20x − 36. (1 point)
Serggg [28]

Consider the form x^2+bx+c. Find a pair of integers whose product is c and whose sum is b. In this case, whose product is 36 and whose sum is 20.

2, 18

Write the factored form using these integers.

(x+2)(x+18)

4 0
2 years ago
-2(3x+5y)=10 in slope intercept form
lesantik [10]

Answer:

The equation in the slope-intercept form is:

  • y = -3/5x - 1

Step-by-step explanation:

Given the equation

-2(3x+5y)=10

We know that the slope-intercept form of a line equation is

y = mx+b

where

  • m is the slope
  • b is the y-intercept

Writing the equation in slope-intercept form

-2(3x+5y)=10

-6x -10y = 10

Add 6x to both sides

-6x -10y + 6x = 10 +  6x

-10y = 10 + 6x

Divide both sides by -10

-10y / -10 = (10 + 6x) / -10

y = -3/5x - 1

Thus, the equation in the slope-intercept form is:

  • y = -3/5x - 1
4 0
2 years ago
A student read a 303 –page book in 7 days. The table shows the total number of pages the student had read at the end
DaniilM [7]

To find the average number of pages the student read from day 2 to day 6, add the total pages in these days and divide by 5 days.

<h3>What is the average?</h3>

This is a very common word used in mathematics and stadistics to refer to the mean value in a set of values.

<h3>How to calculate the average from day 2 to day 6?</h3>

Add the pages the person read these days and then divide by 5 (total of days).

For example:

35 + 45 + 10 +25 + 20 = 135 / 5 = 27 pages

Note: This question is incomplete because the table is missing; due to this, the answer is based on general knowledge.

Learn more about average in: brainly.com/question/2426692

7 0
2 years ago
Don't know how to solve this please help. Show work, thank you
anyanavicka [17]
Hello!

We know that the sum of the three angles of a triangle is equal to 180 degrees. This can be represented using the following formula:

A1 + A2 + A3 = 180

With this knowledge, we can successfully find the missing measurements.

We’ll begin with the large right triangle. Because it is a right triangle, we know that one of its angles is equal to 90 degrees. We are also given that its second angle has a measure of 65 degrees. Insert this information into the formula above and combine like terms:

(90) + (65) + A3 = 180
155 + A3 = 180

Now subtract 155 from both sides of the equation:

A3 = 25

We have now proven that the third angle has a measure of 25 degrees. Looking at the provided image, you’ll notice that this 25 degree angle is adjacent to the 80 degree angle. We can add these neighboring angles to find one of the missing angles of the medium triangle:

25 + 80 = 105

We have now proven that this larger angle has a measure of 105 degrees. Looking again at the provided image, you’ll notice that this triangle also contains a 50 degree angle. Using the “three-angles” formula, we can find the remaining angle of the medium triangle. Insert any known values and combine like terms:

(105) + (50) + A3 = 180
155 + A3 = 180

Now subtract 155 from both sides of the equation:

A3 = 25

We have now proven the third angle of the medium triangle to have a measure of 25 degrees. Consequently, we now have now proven two of the three angles of the smallest triangle. Again using the “three-angles” formula, we can find the measure of the missing angle (x). Insert any known values (using the variable “x” to represent the missing angle) and combine like terms:

(25) + (25) + (x) = 180
50 + x = 180

Now subtract 50 from both sides:

x = 130

we have now proven that the missing angle (x) has a measure of 130 degrees.

I hope this helps!
second angle which has a value of 65 degrees. 
3 0
3 years ago
WHATS YOUR TIKTOKKK OMG I WANT MUTUALS
OleMash [197]
seth2cold let’s be moots
7 0
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