Answer:
281.15 cm²
Step-by-step explanation:
semi perimeter ( s ) = ( a + b + c ) / 2
=( KL + LM + KM ) / 2
=(32+21+27)/2
= 80/2
=40
Area of triangle =
[tex] \sqrt{s \: (s - a) \: (s - b)(s - c)} [/tex]
[tex] \sqrt{40(40 - 32)(40 - 21)(40 - 27)} [/tex]
[tex] \sqrt{40 \times 8 \times 19 \times 13} [/tex]
[tex] \sqrt{79040} [/tex]
[tex]281.15cm {}^{2} [/tex]
What is 10+5
PLEASE HELP
Answer:
of course 15 is the correct answer
Step-by-step explanation:
mark me brainliest
helpppp?
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hvxsihazp,,lk who, ev
Answer:
3. diameter and 4. 14.10cm
Step-by-step explanation:
The distance from point R to point M is the diameter of the circle, it basically cuts the circle is half.
The diameter of a circle is double the radius, 7.5 cm is shown as the radius, so the diameter is 14.10 cm.
What is 81 squared also free
Answer:
9
Step-by-step explanation:
9 * 9 = 81
sqrt(81) = 9
basic multiplication tables
write 9.6 x 10^9 as a normal number
Answer:
Step-by-step explanation:
9.6×10^9=96/10 ×10^9=96×10^8=9,600,000,000
After school one night, I had to stop at the local office supply store and pick up a few items. I bought 2 packages of page dividers. They each cost $3.79. I bought one package of Post-It Tabs that cost $6.79. Finally, I bought a large binder for $11.99. Sales tax was 7.5% and I paid with a 50 dollar bill. How much change did I receive?
Answer:
25.74 ?
Step-by-step explanation:
A mechanic alters the lighthouse to make the light rotate in such a way that is reflection travels north word along the wall at a constant rate of 100 ft./s how fast in radians per second is the beam of light rotating when the lights reflection is 100 feet north of the point on the wall that is closest to the lighthouse
Answer:
The correct solution will be "1 Rad/sec".
Step-by-step explanation:
The given value is:
Velocity (V)
= 100 ft./sec
As we know,
Angular velocity,
⇒ [tex]\omega=\frac{V}{R}[/tex]
On substituting the values, we get
⇒ [tex]=\frac{100}{100}[/tex]
⇒ [tex]=1 \ Rad/sec[/tex]
anybody know this answer?
Answer:
y = -4/5x + 3
Step-by-step explanation:
Chose any two points on the line:
(5, -2)
(-5, 6)
Slope = (y2 - y1) / (x2 - x1)
6 -(-2) / -5 - 5
8 / -10
-4/5
Equation:
y = mx + b
Plug in x and y using any coords and then plug in m (the slope):
-2 = -4/5 * 5 + b
-2 = -20/4 + b
-2 = -5 + b
Add 5 on both sides:
3 = b
Now our equation is:
y = -4/5x + 3
Please let me know if I've done something wrong!
I need help. Can u help me before tomorrow?
Answer:
250/100 x 72 = 180
She has completed 180 invitations
Step-by-step explanation:
Decimal multiplication problem:
250 x 0.72 = 180
Help, I need the answer to this ASAP
Answer:
a=15 is the answer
can anyone tell me what to shade bc I'm still confused-
Answer:You are correct but you need to shade in one more square.
Step-by-step explanation:
Answer:you got it right dude shade in 5 tho
What is the average rate of change of f over the interval
It is a measure of how much the function changed per unit, on average, over that interval. It is derived from the slope of the straight line connecting the interval's endpoints on the function's graph.
NEED HELP NOW!! FOR MATH 10PTS
Answer:
a)
Step-by-step explanation:
Cost function = revenue function - profit function
= -0.3x² + 150x - [-0.5x² + 250x - 300]
= -0.3x² + 150x + 0.5x² - 250x +300
= -0.3x² + 0.5x² + 150x - 250x + 300 {Combine like terms}
= 0.2x² - 100x + 300
1. Wendy wants to find the width, AB, of a river. She walks along the edge of the river 300 ft and marks point C. Then she walks 80 ft further and marks point D. She turns 90° and walks until her location, point A, and point C are collinear. She marks point E at this location, as shown.
(a) Can Wendy conclude that ΔABC and ΔEDC are similar? Why or why not?
(b) Suppose DE = 50 ft. Calculate the width of the river, AB. Show all your work.
Answer:
It can be deduced that the triangles are similar because the three internal angles are equal for both triangles.
How to solve the triangle?It should be noted that the triangles are similar because the three internal angles are equal.
In this case, the ratio of the corresponding sides are equal and the corresponding angles are congruent.
The width of the river will be:
300/80 = AB/50
AB = (300 × 50)/80
AB = 187.50 feet.
Learn more about triangles on:
https://brainly.com/question/17335144
Albert and Mark are candidates. Albert received 2,500 votes while Mark received 3,000 votes. What is the ratio of albert's vote against Mark's?
Answer:
albert 2500:3000 mark/÷100
25÷30 /÷5
5:6
their ratio is 5:6
You flip a coin. What is p(tails). As a percentage
Answer:
50%
Step-by-step explanation:
Since there are only two sides on a coin, each side would have a 50% chance
The freshman class is selling candy bars to raise money. They purchased 3100 candy bars and paid a delivery fee of $35. The total cost, including the delivery fee, was $1430. What was the cost of each candy bar?
Answer:
$0.45
Step-by-step explanation:
To answer this question, we first have to subtract the delivery fee from the total cost:
1430 - 35 = 1395
Now, we divide this number by the total amount of candy bars:
1395 / 3100 = 0.45
So, each candy bar costs $0.45
Hope this helps :)
Each candy bar would be 45 cents
The diameter of a circle is 36 inches. What is the circle's area?
use 3.14 for PI
but only windowssssssssssssssssssss
The area of the circle is the region occupied by it in the two dimensional plane.
Area of a circle is given by ;
➝ πr²The diameter of the circle is 36inches
ㅤㅤㅤ➙ Radius = D / 2
ㅤㅤㅤ➙ Radius = 36 / 2
ㅤㅤㅤ➙ Radius = 18 inches
Therefore, area :
➝ A = πr²
➝ A = 3.14 × ( 18 )²
➝ A = 3.14 × 324
➝ A = 1017.36
Solution:
We know that:
Diameter of circle = 36 in.Radius of circle = Diameter/2 in.Area of circle = πr²Finding the radius of the circle:
Radius of circle = Diameter/2 in.=> Radius of circle = 36/2 in.=> Radius of circle = 18 in.Finding the area of the circle:
Area of circle = πr²=> Area of circle = (3.14)(18²)=> Area of circle = (3.14)(324)=> Area of circle = 3.14 x 324 = 1017.36 in²Neal deposited $5,000 into an account that earns 6. 5% simple annual interest. Aleli deposited $5,000 into an account that earns 4% compound interest,
compounded annually. Which investment earns more interest after 3 years? How much more?
Aleli's investment: $375. 00
Neal's investment; S375. 00
Neal's investment: $350. 68
O Aleli's investment: $350. 68
Answer:
if jhonny had one apple how many apple does the chicken have in the basement across the road in his house under the bed??
Step-by-step explanation:
PLEASE HELP ASAP 30 PTS I NEED TO GIVE MY HOMEWORK Find the magnitude of the vector <5, −3>.
5.8
4
6.1
5.2
WILL GIVE BRAINLIEST
Answer:
5.8
Step-by-step explanation:
[tex]\sqrt{5^{2} +( -3)^{2} }[/tex]
[tex]\sqrt{25 + 9}[/tex]
[tex]\sqrt{34}[/tex]
5.83
4. 2/3 of the students in Sarah’s class are boys. Of the boys, 13 of them wear glasses. What fraction of the students are boys that wear glasses? Choose the model that matches the situation.
Yes let's find
The fraction is
[tex]\\ \rm\Rrightarrow 13/2/3[/tex]
[tex]\\ \rm\Rrightarrow 13(3)/2[/tex]
[tex]\\ \rm\Rrightarrow 39/2[/tex]
Answer:
39/2 of the class are boys that wear glasses
Step-by-step explanation:
[tex]\dfrac23 \textsf{ of the class are boys.}[/tex]
[tex]\textsf{If 13 of them wear glasses, then} \dfrac{13}{\frac23}} \textsf{ wear glasses.}[/tex]
[tex]13 \div \dfrac23 =13 \times \dfrac32=\dfrac{39}{2}[/tex]
Which of the following equations have a slope of -1/2 and passes through the point ( − 5 , 2 ) ?
Answer:
where are the equations.
(2m -3)^2 pls answer fast
Answer:
4m^2-12m+9
Step-by-step explanation:
[tex](2m -3)^2[/tex]
[tex]\mathrm{Apply\:Perfect\:Square\:Formula}:\quad \left(a-b\right)^2=a^2-2ab+b^2[/tex]
[tex]\left(2m-3\right)^2=\left(2m\right)^2-2\cdot \:2m\cdot \:3+3^2[/tex]
[tex]=\left(2m\right)^2-2\cdot \:2m\cdot \:3+3^2[/tex]
[tex]\mathrm{Simplify}[/tex]
[tex]=4m^2-12m+9[/tex]
~Learn with Lenvy~
Answer:
[tex] \bf \longrightarrow \: ( {2m - 3)}^{2} [/tex]
Using Identity
[tex] \bf \longrightarrow \:(a - b) {}^{2} = { a}^{2} + {b}^{2} - 2ab[/tex]Let,
a = 2m
b = 3
Now
[tex] \sf \longrightarrow \:(2m) {}^{2} + {3}^{2} - 2(2m \times 3) \\ \\ \\ \sf \longrightarrow \:4 {m}^{2} + 9 \: - 2(6m) \\ \\ \\ \sf \longrightarrow \:4 {m}^{2} + 9 \: - 12m[/tex]
Therefore,
Your answer is 4m² + 9 - 12m .Im confused how to convert the equation
0
Simplify trigonometry:
[tex]\frac{cos\ \pi+sin(\frac{\pi}{4})}{sec\ (\frac{\pi}{4})}+\frac{tan(\frac{\pi}{4})-cos\ 0}{cos\ (\frac{\pi}{4})}[/tex]
Evaluate the expression
[tex]\frac{-1+sin(\frac{\pi}{2})}{sec\ (\frac{\pi}{4})}+\frac{tan\ (\frac{\pi}{4})-cos\ 0}{cos\ (\frac{\pi}{4})}\\ \frac{-1+1}{sec\ (\frac{\pi}{4})}+\frac{tan(\frac{\pi}{4})-cos\ 0}{cos(\frac{\pi}{4})}\\ \frac{-1+1}{\sqrt2}+\frac{tan(\frac{\pi}{4})-cos\ 0}{cos\ (\frac{\pi}{4})}\\ \frac{-1+1}{\sqrt2}+\frac{1-cos\ 0}{cos\ (\frac{\pi}{4})}\\ \frac{-1+1}{\sqrt2}+\frac{1-1}{cos\ (\frac{\pi}{4})}\\ \frac{-1+1}{\sqrt2}+\frac{1-1}{\frac{\sqrt2}{2}}[/tex]
Apply the Inverse Property of Addition
[tex]\frac{0}{\sqrt2}+\frac{0}{\frac{\sqrt2}{2}}[/tex]
Apply Zero Property of Multiplication
[tex]0[/tex]
I hope this helps you
:)
Someone pls help me
the function c(x) 3x-4 determines how many cupcakes need to be purchased for a birthday party, where x is the number of kids at the party. the party planner uses d(c(x)) to find the amount of money to bing for the cupcakes purchase. the function d(x)=2x+5. solve for how much money to bring when there are 7 kids at the party.
See picture for math work and answer.
QUICK please will give brainliest to correct answer please and thank you.
Answer:
I would say B.
Step-by-step explanation:
at a hockey game the snack bar sells nachos 2 dollars and pretzels for 3 dollars. The snack bar sold 49 nachos and pretzels all together for $137 dollars
Answer:
The total number of nachos sold:49
The total number of pretzels sold:13
Step-by-step explanation:
The numbers of nachos is 49. Each nacho costs 2 dollars.
2 x 49 = 98
Then you subtract that amount to get the amount of money left for pretzels.
137 - 98 = 39
Then you divide 39 by 3 since that's the cost of each pretzel.
39 ÷ 3 = 13
13 is the amount of pretzels you can buy after you buy 49 nachos.
Complete the explain on why x + 4 ≥ 7 and x − 4 ≥ −1 have the same solutions.
Step-by-step explanation:
[tex]x + 4 \geqslant 7 \\ x \geqslant 7 - 4 \\ x \geqslant 3[/tex]
[tex]x - 4 \geqslant - 1 \\ x \leqslant - 1 + 4 \\ x \leqslant 3[/tex]
Find the slope of the line between (19,–27) and (34, 15)
Answer:
K
Step-by-step explanation:
Answer:
The answer is 14/5
Step-by-step explanation:
I Hope this helps
What is m
A)30
B)60
C)90
D)50
Answer:
A) 30°
Step-by-step explanation:
All triangles angles add always to 180°, so we have two already 75° + 75° = 150° thus the angle is 30°
Answer:
m Is 30
Step-by-step explanation:
m is 30
because....the sum of angles in a triangle is 180
75+75+m =180
150+m=180
make m the subject of the formula
m=180-150
m=30