That is a question about circle area.
To calculate the area of a circle, we multiplicate the constant pi ([tex]\pi \approx 3.14[/tex]) by the radius (of the circle) squared. The expression represents that is below:
[tex]\boxed{A_c = \pi \times r^2}[/tex]
In our problem, we don't know what is the circle raius, but we know the diameter. In a circle, the diameter is equal the double radius.
So, to know the radius of our circle, we divided the diameter by 2. Consequently, the raius of our circle is [tex]63 \div2 = 31.5[/tex].
Now, we should use the expression and we will find the area:
[tex]A_c = 3.14\times 31.5^2\\A_c = 3.14\times 31.5\times 31.5\\A_c =3.14\times 992.25\\A_c = 3115.665[/tex]
Therefore, the area of a circle with a diameter of 63 is approximately 3115.665.
I hope I've helped. :D
Enjoy your studies! \o/
What is AC for brainliest
•Triangle 1
#Find CD first use tan formula
tan(∅) = opposite / adjuscent
tan(45) = CD / 5
CD = 5 × tan(45)
CD = 5
•Triangle 2
#Now you can find AC use Pythagoras theorem (c = AC)
a² + b² = c²
4² + 5² = c²
16 + 25 = c²
41 = c²
c = √41
c = 6.4
so, AC is 6.4
#Give me brainliest ok? im tired writing all of this
2(x + 4) − 1 = 2x + 7
Answer:
All real numbers are solutions to this problem.
Step-by-step explanation:
I) Simplify:
2(x + 4) - 1 = 2x + 7
x + 4 - 0.5 = x + 3.5 (Divide by 2)
x + 3.5 = x + 3.5 (Simplify x + 4 - 0.5)
x = x
II) Conclusion:
Any real number will work as a solution.
solve 4x^2 +x-3 using the box method
Answer:
(4x - 3)(x + 1)
Step-by-step explanation:
=4x² + x - 3
=4x² + 4x - 3x - 3
=4x(x + 1 ) - 3( x + 1)
=(4x - 3)(x + 1)
the root of equation 1/x-1 +1/x-2 = 1/x-3
Answer:
The roots of the quadratic equation are , .
Step-by-step explanation:
The roots of the quadratic equation are , .
Step-by-step explanation:
As given the equation in the form
Simplify the above equation
(x-2)-x = 3x × (x-2)
x-2 - x = 3x² - 6x
3x² - 6x + 2 = 0
As the equation is written in the form ax² + bx + c = 0
a = 3 , b = -6 , c = 2
Put all the values in the above equation
Thus
Therefore the roots of the quadratic equation are , .
-4x-3(-44-23)=13
please show the work, i’ll mark brainliest
Answer:
47
Step-by-step explanation:
Let's solve your equation step-by-step.
−4x−3(−44−23)=13
Step 1: Simplify both sides of the equation.
−4x+201=13
Step 2: Subtract 201 from both sides.
−4x+201−201=13−201
−4x=−188
Step 3: Divide both sides by -4.
−4x
−4
=
−188
−4
x=47
What goes under the boxes? Help pls
Answer: -1/25 / -1/5 / 1/25
Step-by-step explanation:
HEY CAN ANYONE PLS ANSWER DIS MATH PROBLEM!!!
PLS I RLY NEED IT RN!!!
Answer:
Step-by-step explanation:
one point is (-2,5)
5y-25=-11x-22
11x+5y=25-22
11x+5y=3
5y=3-11x
[tex]y=\frac{3-11x}{5} \\x=-2,y=5\\x=3,y=-6\\[/tex]
so points are (-2,5) and (3,-6)
draw a line through these points.
A pound of blueberries cost $3.98 and a pound of clementines cars $2.49 what is the combined cost of 0.6 pound of blueberries and 1.8 pounds of clementines
In the parallelogram below find the value of each variable. Hint: find the value of t first
Answer:
because this is a parallelogram
=> 3t - 15 = 2t + 10
⇔ t = 10 + 15
⇔ t = 25
with t = 25 => 3t - 15 = 3.25 - 15 = 60
we also have:
4r + (3t - 15) = 180°
⇔ 4r + 60° = 180°
⇒ 4r = 120°
⇔ r = 30
we also have;
4r = 3s
=> 4.30 = 3s
⇔ s = 4.10
⇔ s = 40
Step-by-step explanation:
You can use the fact that sum of all angles of a parallelogram is 360 degrees and the sum of two adjacent angles in a parallelogram is 180 degrees.
The value of the variables used in the figure are:
r = 30
s = 40
t = 25
What are some useful properties of angles of a parallelogram?Sum of all angles of a parallelogram is 360 degrees.Sum of two adjacent angles in a parallelogram is 180 degrees.Using the above facts to find the values of specified variables[tex]4r + (3t - 15) + (2t + 10) + 3s = 360^\circ\\4r + 3s + 5t = 365[/tex]
And
[tex]3t - 15 + 4r = 180 \cdots (1)\\3t - 15 + 3s = 180\cdots (2)\\3s + 2t + 10 = 180\cdots (3)\\4r + 2t + 10 = 180\cdots (4)[/tex]
We get 2 systems of linear equations.
First system consists of equation 1 and equation 4
Second system consists of equation 2 and equation 3
From equation 1 and 4, as both's left side is equal to 180, thus they are equal too, or
[tex]3t - 15 + 4r = 4r + 2t + 10\\3t - 2t = 4r - 4r + 10 + 15\\t = 25[/tex]
Putting it in equation 1, we get:
[tex]3t - 15 + 4r = 180\\3 \times 25 + 4r = 180 + 15\\75 + 4r = 195\\\\r = \dfrac{195 - 75}{4} = 30[/tex]
Putting the value t = 25 in second equation, we get:
[tex]3t - 15 + 3s + 180\\3 \times 25 - 15 + 3s = 180\\60 + 3s = 180\\\\s = \dfrac{180 - 60}{3} = 40[/tex]
Thus, the values of the specified variables in the given graph are:
r = 30
s = 40
t = 25
Learn more about system of linear equations here:
: https://brainly.com/question/13722693
i need to make equations with the models
Answer:
I dont know ask someone else I just here for the points
how do u write an expression for "twenty times a number less than two."
a.2 - 20y
b.20y-2
c.20 (y-2)
Answer:
20(y-2)
Step-by-step explanation:
PLEASE ANSWER ALL THE QUESTIONS IM LOSING MY SANITY
For any line, if you draw 2 right triangles using the line as the hypotenuse, can the triangles be congruent? Why or why not? Do they have to be congruent? Why or why not
Hypotenuse-Leg (HL) Theorem. If the hypotenuse and one leg of a right triangle are equal to the hypotenuse and one leg of another right triangle, then the two right triangles are congruent.
Mark as brainlist
What would Hope be attempting to find if she writes d(4) = 78(4)?
Answer:
d=78
Step-by-step explanation:
so you would divide both sides of the equation by 2×2
d×4÷(2×2)=78×4÷(2×2) <- you would do this to get rid of 4 so you cna get the d alone
d=78×4÷(2×2) <- thats the other side of the equation btw
then it would be:
d=39×2
d=78
Expression 3x²+4x-5
x=0
Answer:
x = {1/3, 0}
Step-by-step explanation:
Please help me. Thank you so much
Answer:
x = 10
Step-by-step explanation:
Select all line segment measurements below that could NOT be used to form a triangle. a triangle with the side measurements of 3, 4, and 6 inches a triangle with the side measurements of 2, 3, and 5 inches a triangle with the side measurements of 3, 3, and 4 inches a triangle with the side measurements of 5, 5, and 5 inches a triangle with the side measurements of 4, 4, and 8 inches a triangle with the side measurements of 7, 8, and 16 inches
Answer:
a triangle with the side measurements of 2, 3, and 5 inches
a triangle with the side measurements of 7, 8, and 16 inches
a triangle with the side measurements of 4, 4, and 8 inches
Step-by-step explanation:
A triangle is a polygon shape with three sides and three angles. There are different types of triangles such as isosceles triangle, scalene triangle, equilateral triangle and right angle triangle.
The triangle inequality theorem states that the sum of any two sides of a triangle is always greater than the third side.
For a triangle with the side measurements of 3, 4, and 6 inches:
3 + 4 > 6. This can be a triangle
For a triangle with the side measurements of 2, 3, and 5 inches:
2 + 3 is not greater than 5, hence it cannot be a triangle
For a triangle with the side measurements of 3, 3, and 4 inches:
3 + 3 > 4. This can be a triangle
For a triangle with the side measurements of 5, 5, and 5 inches
5 + 5 > 5. This can be a triangle
For a triangle with the side measurements of 4, 4, and 8 inches:
4 + 4 is not greater than 8, hence it cannot be a triangle
For a triangle with the side measurements of 7, 8, and 16 inches:
7 + 8 is not greater than 16, hence it cannot be a triangle
You are designing a simulation for which day of the week people are born. You assign numbers to each day of the week, from, Sunday =0 through Saturday =6. You decide to use a sample size of 20.
Use the random number table to conduct your first trial, working from left to right.
39017 66124 37046 59285 15208 47185 76426 23648 51239 88346 59268 71307 37420 69307 98648 45960
Which chart matches the results from your first trial?
Answer:
In case you have not gotten the answer yet it is the chart, -- 3,3,3,2,3,3,3
Step-by-step explanation:
I took the quiz
A new bank customer with $3,000 wants to open a money market account. The bank is offering a
simple interest rate of 1.4%.
a. How much interest will the customer earn in 30 years?
b. What will the account balance be after 30 years?
a. The customer will earn $ in interest
Answer:
SI=P*T*R/100
=3000*1.4*30/100
=$1260
Account balance=3000+1260
=$4260
Answer:
Step-by-step explanation:
SI=P*T*R/100
P=3000
t=30
r=1.4%
I=PRT
=3000*1.4*30/100
=$1260
After 30 years?
interest plus current amount
Account balance=3000+1260
=$4260
Which coordinate plane shows the graph of 3x + y > 9?
Answer:
Here is the graph.
4
It takes Naomi 4 minutes to run 5 laps.
How many laps per minute is that?
Ebon
Answer:
1.25 per min
Step-by-step explanation:
divide 5÷4 and you get 1.25 per min
Determine if (3,-4) is a solution to y < 2x – 5.
£0.65 in pence maths
Answer:
65p
Step-by-step explanation:
uhhhh......
I am really confused
50 POINTS I NEED THIS ASAP
The total profit function, P(x), for a company producing x thousand units is given by P(x)=−2x2+38x−120. Find the values of x for which the company makes a profit. [Hint: The company makes a profit when P(x)>0.] Explain and justify your answer.
Answer:
(5,15)
Step-by-step explanation:
Check x = 0,the P(x)=-225 : not an inequality solution
Check x = 10 to get -3*-5*5> 0 solutions in 5< x < 10
Check x = 20 to get -3*+5*+15<0 so no solutions in (15,+inf)
Ans: Profit for (5,15)
10 points plz help!!
Answer:
38 is pounds, 84 is kilograms, 6 is ounces, 170 is grams, 180 is gallons, 680 is liters, 29 is cubic meters, 1024 cubic feet. If right plz give brainliest.
6th grade math help me pleaseeee
Answer:
Top left
Step-by-step explanation:
Look at the numbers it's going through. The x axis is the one going side to side, y is up and down
i am bad with money problems help meh please ;-;
Answer:
b
Step-by-step explanation:
Answer:
4.96*6.57*8.02*2.31=603.716984464
Kelly was building a bed for her dollhouse. She used her bed, which is 4 feet × 6 feet, as a guide. She scaled down the dimensions of her bed by a factor 1 over 5. What are the dimensions of the model bed she built?
0.8 foot × 1.2 feet
0.4 foot × 0.6 foot
0.08 foot × 0.12 foot
0.04 foot × 0.06 foot
Answer:
A
0.8 foot × 1.2 feet
Step-by-step explanation:
Graph the equation y=1/2x+5
Answer:
This is what it should look like:
help pls i will give BRIANLY
cat is to feline as____is to porcine
Answer:
pig Lol
Step-by-step explanation:
but seriously
How long is the missing side length?
1 point
12.2
4.6
7.6
11.3
ОО
ОО
127.7
196
Answer:
Figure it out
Step-by-step explanation: