Answer:
69.08
Step-by-step explanation:
The equation for circumference is C = 2πr and the equation for area is A = πr^2. First, do 379.94 = 3.14r^2. This means that r^2=121 so r=11. Now plug it in to C=2πr so it becomes C=2π(11). So C=22π or 69.08.
Question:
Find the circumference of the circle. Use 3.14 for π.
5 in.
Answer:
15.7 inches
Step-by-step explanation:
Identify the diameter of the circle.
d = 5 in.
Use the formula.
C = πd
C = π(5) Substitute 5 for d.
C ≈ 3.14(5) Substitute 3.14 for π.
C ≈ 15.7 Multiply.
The circumference of the circle is about 15.7 inches.
HELP PLEASE! Write a quadratic function that passes through the point (-1,9), has an axis of symmetry of x=-3 and a minimum value of 7.
Answer:
[tex]y = \frac{1}{2}x^{2} - 3x + 11.5[/tex]
Step-by-step explanation:
Vertex Form of a quadratic equation;
[tex]y = a( x - h )^{2} + k[/tex]
Vertex of the parabolas (h, k)
The vertex of the parabola is either the minimum or maximum of the parabola. The axis of symmetry goes through the x-coordinate of the vertex, hence h = -3. The minimum of the parabola is the y-coordinate of the vertex, so k= 7. Now substitute it into the formula;
[tex]y = a ( x + 3 ) ^{2} + 7[/tex]
Now substitute in the given point; ( -1, 9) and solve for a;
[tex]9 = a( (-1 ) + 3)^2 + 7\\9 = a (2)^{2} + 7\\9 = 4a + 7\\-7 -7\\2 = 4a\\\frac{1}{2} = a\\[/tex]
Hence the equation in vertex form is;
[tex]y = \frac{1}{2}(x - 3)^{2} + 7[/tex]
In standard form it is;
[tex]y = \frac{1}{2}x^{2} - 3x + 11.5[/tex]
twice the sum of 4 and x is less than -16. solve the i equality
Answer:
x<-2
Step-by-step explanation:
4x-2x2=-16 so it must be anything less than -16
Negatives get smaller the more digits, so x is less than -2
A car rental company charges $26 per day for a rented car and $0.50 for every mile driven. A second car rental company charges $18 per
day and $0.75 for every mile driven. What is the number of miles at which both companies charge the same amount for a one-day rental?
O A 24 miles
OB. 32 miles
C. 42 miles
o D. 44 miles
GETS BRAINLIEST AND 30 POINTS ! Describe the dilation of a line segment by a scale factor of 1/2 centered at the origin
Answer:
Following are the solution to this question:
Step-by-step explanation:
A transform is a dilation that has changed the size and shape of such a geometric form.
Segment of let line is:
[tex]\to x_i=x_n+t(x_{n+1} -x_n)\\\\\to y_i=y_n+t(y_{n+1} -y_n)[/tex]
[tex]scale \ factor = \frac{1}{2}[/tex]
The dialling is based on its origin and also the line section, in order to provide new coordinates [tex](\frac{x_n}{2}, \frac{y_n}{2}) , (\frac{x_{n+1}}{2}, \frac{y_{n+1}}{2})[/tex] So, the line segment is unchanged, and also has shorter.
find the distance between a and b
Answer:
5 letters distance
Step-by-step explanation:
I am a solution . My number cubed is equal to - 64 . What number am I?
Answer:
-4
Step-by-step explanation:
-4^3 = -64
need a quick answer please
help me real quick,
expand 2x² - 8
Answer:
HERE IS UR ANSWER MATE IN AN ATTACHMENT!.......Step-by-step explanation:
GOT IT?
What is 6/-1 expressed as an integer?
Answer:
-6
Step-by-step explanation:
I need this by tomorrow! please help me, I'm desperate. I dont understand it well.
!!!!!!!!!!!!pls answer!!!!!!!!!!!(i'm being timed)
Answer:
an+4n+1
Step-by-step explanation:
Hope it helped
please help me answer this
A tree has a shadow length of approximately 9 feet. The distance from the tip of the tree to the tip of the shadow is bout 15 feet. How tall is the tree?
Please help!!!!!
Answer:
12
Step-by-step explanation:
if you draw the picture in your copybook you will see that there is a right triangle, we have the Pythagorean theorem i.e c=√a²+b²
15=√9²+x². the trees tall=X
15²=9²+x²
x²= 144
X= 12
hope you will understand
I need to know then measurement of c
Answer:
[tex] \huge{ \boxed{ \bold{ \sf{ \pink{80°}}}}} [/tex]
Step-by-step explanation:
✰ [tex] \underline{ \sf{First, \: Let's \: learn \: about \: internal \: angles \: of \: a \: triangle}}[/tex]
The angles which are formed inside by the joining of arms of a triangle is called interior angles of a triangle. According to the figure provided , In ∆ ABC , ∠ABC , ∠ ACB , ∠ BAC are interior angles because they lie inside the ∆ ABC and sum of such interior angles is always 180°.
❀ [tex] \sf{Now, \: Let's \: solve} : [/tex]
☄ [tex] \underline{ \underline{ \sf{Provided : }}}[/tex]
∠B = 3x°∠ C = 4x°∠ A = 2x°☄ [tex] \underline{ \sf{To \: Find :}}[/tex]
Measure of C✏ [tex] \text{Set \: up \: an \: equation \: and \: solve \: for \: x.}[/tex]
[tex] \text{{∠a \: + \: ∠ \: b \: + \: ∠ \: c \: = \: 180 \degree}}[/tex]
→ [tex] \sf{2x + 3x + 4x = 180 \degree}[/tex]
→ [tex] \sf{9x = 180 \degree}[/tex]
→ [tex] \sf{ \frac{9x}{9} = \frac{180 \degree }{9} }[/tex]
→ [tex] \sf{x = 20 \degree}[/tex]
The value of x is 20°. As we are asked to find the measure of ∠C , substituting the value of x in 4x :
[tex] \text{∠c = 4x}[/tex]
→ [tex] \sf{∠ \: c \: = 4 \times 20 \degree}[/tex]
→ [tex] \boxed{ \bold{ \pink{ \sf{∠c \: = 80 \degree}}}}[/tex]
Hence , The measure of ∠ C is 80 °
Hope I helped ! ッ
Have a wonderful day / night ! ♡
▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
40% of students enjoy playing Among us. If 100 students enjoy playing Among us, how many students are there?
Answer:
250
Step-by-step explanation:
40%= 100
10%=25
100%= 250
Answer:
250
Step-by-step explanation:
they finish
There are 4 athletes at a track meet. How many different ways can
first, second, and third?
Answer:
4 ways i think
Step-by-step explanation:
Hope this helps!
Answer:
its 20
Step-by-step explanation:
hope this helps
Find the common denominator. Click all that applies. 1/4 and 1/2 3/12 and 6/12 3/12 and 6/12 1/4 and 1/2
The distance covered by three runners and the time they spent running is shown in the table. If Rudy continues at the rate in the table, how far will he run in 2 hours?
Cody= in 1/4 hour he can run 2 miles
YIn=1 1/2 hour he can run 11 1/4 miles
RUdy= 1 1/2 hour can run 12miles
Answer:
16 is the answer
Step-by-16step explanation:
The required distance run by the rudy in 2 hours is 16 miles.
Given that,
The distance covered by the three runners and the time they spent running is shown in the table. If Rudy continues at the rate in the table, how far will he run in 2 hours is to be determined.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
The rate of the Rudy running = 12 / [ 3 / 2] = 8 miles per hour
Now,
For time 2 hour the distance run by Rudy = 8 × 2 = 16 miles.
Thus, the required distance run by the rudy in 2 hours is 16 miles.
Learn more about simplification here:
https://brainly.com/question/12501526
#SPJ2
given f(x)=2x-3, find f(1)
Answer:
-1
Step-by-step explanation:
the 1 substitutes the x so plug in 1 for x
2(1) - 3 = 2-3= -1
which table represents a linear function
Answer: B
Step-by-step explanation:
B is the only one of the tables that goes up with a order
what is +(-4)? I'm taking a test and I would love some help here please
Answer:
4
Step-by-step explanation:
The absolute value is the distance between a number and zero. The distance between -4 and 0 is 4.
Answer:
-4
Step-by-step explanation:
Give the other person brain
Can someone plss help me I don't understand this!
Answer: 4. A
5. C
6. B
Step-by-step explanation:
Giving extra points if you can answer
Answer:
+16
Step-by-step explanation:
It’s adding 16 every time
Please help ;-;..................................
Answer:
12.9 - 22.7b
Step-by-step explanation
Given the expression 4.3(3-5b) = 1.2b
Open the bracket
4.3(3-5b) = 1.2b
4.3(3)-(4.3)(5b) = 1.2b
12.9 - 21.5b = 1.2b
12.9 - 21.5b - 1.2b
12.9 - (21.5+1.2)b
12.9 - 22.7b
Hence the required expression is 12.9 - 22.7b
Brian has reduced his cholesterol level by 13% after his last check up. If his original level was 240, what is his approximate cholesterol level now?
Answer:
208.8
Step-by-step explanation:
240 times 0.87 is 208.8
Round 60958 correct to 1 significant figure
The answer is 60000 because it is only to 1sf
Answer:
60,000
Step-by-step explanation:
Can somebody help me with the list 3. Will mark brainliest
Answer:
3. < ACB=<DCE
Step-by-step explanation:
Both are vertical angles & they are equal
The average temperature of the week is 80 degrees. The first 3 days have an average of 78 and the average of the last 3 days is 82 degrees, what was the temperature of the middle day?
Answer:
80
Step-by-step explanation:Solution:
step 1 Address the formula, input parameters & values.
Input parameters & values:
The given numbers are 78 & 80
step 2 Find the sum of the given two numbers.
sum = 78 + 80 = 158
step 3 Divide the sum by 2 to get the average.
average = 158/2
= 79
Thus, 79 is an average of positive integers 78 and 80.
A hot air ballon went from an elevation of 6,669 feet to an elevation of 3,402 in 54 minutes. What was its rate of descent?
Answer:
elevation refers to the height of the balloon. Descent refers to moving down, and rate of descent refers to how quickly the balloon moved down.
In this case, we have a descent of 2,125 feet (initial height of 5,439 - ending height of 3,314). Since it took 34 minutes for the balloon to descend this distance, we divide the descent by the time (2,125/34). This gives us a rate of 62.5 feet per minute.
That means that the balloon traveled downward 62.5 feet every minute. That's a fast moving balloon!
Step-by-step explanation:
hopefully this helps
What is the area of the base?
Answer:
40
Step-by-step explanation: