Answer:
28.258mm
Step-by-step explanation:
A semi circle is half of a circle, so we will divide it by 2 after finding the area.
Formula for finding semi circle = pi x radius ÷ 2
Formula for radius = diameter ÷ 2
Radius = 36 ÷ 2 = 18mm
Semi circle = 3.14 or 22/7 x 18 = 56.57
56.57 ÷ 2 = 28.285
Note: I don't have a calculator with me right now, so you might want to consider typing out pi x 18 ÷ 2 on a calculator since my answer might be wrong because the answer has endless decimals.
Which measurement is closest to the area of the circle in square centimeters?
31.4 cm
78.5 cm
62.8 cm?
50.2 cm?
PLEASE HELPPP ASAP
Answer:
u need to know the diamater measure first
Step-by-step explanation:
Cassie’s plant is growing 5 inches per day, while Jeremy’s plant is growing 6 inches per day. If this pattern were to continue, which coordinate plane shows the relationship between the growth of Cassie’s plant and Jeremy’s plant?
Answer now will give the crown thingy
Answer:
C
Step-by-step explanation:
I need help!
How do you know if an equation is exponential growth or exponential decay or not an exponential equation? For example, what is y=2(0.5)^-the exponent is x
Answer:
If a is positive and b is greater than 1 , then it is exponential growth. If a is positive and b is less than 1 but greater than 0 , then it is exponential decay
Step-by-step explanation:
small baby answer
2x-5xy-3y+2xy +5y-3х
Answer:
2y - x - 3xy
Step-by-step explanation:
you just add like terms
I really bad at this
Yes
No
Answer:
true yes
Step-by-step explanation:
I got a 60 so I have to do it again and this is one of the questions pleas help
PLEASE HELP YA GIRL OUT ILL GIVE U BRAINLIST
Answer:
12.75feet (12¾)
Step-by-step explanation:
7t+1+5t+8=162feet
12t+9=162feet
12t=162-9
=153
t = 153÷9
=12.75feet (12¾feet)
Convert the equation from Standard to General form
Can somebody help me ASAP
Answer:x squred+ y squared +4y-21=25
Step-by-step explanation:
In need of help on Alg 2
Answer:
[tex]\frac{20}{13}[/tex] + [tex]\frac{5}{13}[/tex] [tex]\sqrt{3}[/tex]
Step-by-step explanation:
Given
[tex]\frac{5}{4-\sqrt{3} }[/tex]
To rationalise the denominator, multiply the numerator/ denominator by the conjugate of the denominator.
The conjugate of 4 - [tex]\sqrt{3}[/tex] is 4 + [tex]\sqrt{3}[/tex]
= [tex]\frac{5(4+\sqrt{3}) }{(4-\sqrt{3})(4+\sqrt{3}) }[/tex]
= [tex]\frac{20+5\sqrt{3} }{16-3}[/tex]
= [tex]\frac{20+5\sqrt{3} }{13}[/tex]
= [tex]\frac{20}{13}[/tex] + [tex]\frac{5}{13}[/tex] [tex]\sqrt{3}[/tex]
Point Q is image of (-7,-6) under the translation (x,y)=(x+12,y+8)
If correct I’ll give brainlist
[tex]\frac{2}{3}[/tex]
When graphed, the equation 2x - 3y = -3 forms a linear function. The slope of that line is 2/3.
I NEED HELP ASAP!!!!!
please help out;
What is the surface area of this triangular prism?
Answer:
Step-by-step explanation:
14x3x2=84
(12x10x2)/2=12x10=120
120+84=204
Answer:
SA=724 mm^2
Step-by-step explanation:
14*13==182,*2=364
14*10=140
10*12=120, *1/2=60, *2=120
364+140+120=724
SA=724 mm^2
someone pls help me with this
ITS SO CONFUSINGNSKDN
Answer:
y=67.7 Degrees
Step-by-step explanation:
You're given the opposite and adjacent sides to angle Y, so we use Tan to find the angle:
Tan(y)= 100/41
We then inverse tan to isolate y
y=tan^-1 100/41
y=67.7 Degrees
Note: Use a calculate to find the final answer
Rich is comparing the cost of maintaining his car with the depreciation value of the car.
The value starts at $20,000 and decreases by 15% each year.
The maintanance cost is $500 the first year and increases by 28% per year.
When will the maintenance cost and the value be the same.
Please explain step by step
Answer:
The maintance cost and the value will be the same in 9 years.
Step-by-step explanation:
Exponential function:
An exponential function has the following format:
[tex]y(t) = y(0)(1 + r)^t[/tex]
In which r is the rate of change.
The value starts at $20,000 and decreases by 15% each year.
This means that [tex]V(0) = 20000, r = -0.15[/tex]
So
[tex]V(t) = V(0)(1 + r)^t[/tex]
[tex]V(t) = 20000(1 - 0.15)^t[/tex]
[tex]V(t) = 20000(0.85)^t[/tex]
The maintance cost is $500 the first year and increases by 28% per year.
This means that [tex]M(0) = 500, r = 0.28[/tex]. So
[tex]M(t) = M(0)(1 + r)^t[/tex]
[tex]M(t) = 500(1 + 0.28)^t[/tex]
[tex]M(t) = 500(1.28)^t[/tex]
When will the maintenance cost and the value be the same.
This is t for which:
[tex]V(t) = M(t)[/tex]
So
[tex]20000(0.85)^t = 500(1.28)^t[/tex]
[tex]\frac{(1.28)^t}{(0.85)^t} = \frac{20000}{500}[/tex]
[tex](\frac{1.28}{0.85})^t = 40[/tex]
[tex]\log{(\frac{1.28}{0.85})^t} = \log{40}[/tex]
[tex]t\log{(\frac{1.28}{0.85})} = \log{40}[/tex]
[tex]t = \frac{\log{40}}{\log{(\frac{1.28}{0.85})}}[/tex]
[tex]t = 9[/tex]
The maintance cost and the value will be the same in 9 years.
A pet store sold 2 birds. They sold 6 times as many turtles as they sold birds. How many turtles did they sell?
Answer:
12
Step-by-step explanation:
"6 times as many birds..." in other words 6 x 2
The number of turtles that was sold by the pet store given the number of birds sold is 12.
How many turtles are sold?
Multiplication is a mathematical operation that involves determining the product of two or more numbers. The sign used to represent multiplication is x.
Number of turtles were sold = 2 x 6 = 12
1. What is the shape formed by a horizontal cross-section parallel to the base of the right rectangular pyramid? A right rectangular pyramid is shown. The base is shaded.
A. Circle
B. Triangle
C. Rectangle
D. Trapezoid
PLEASE HELP, i will give you brainliest
Answer:
55m²
Step-by-step explanation:
So for the two small triangles, I did 10x3 =30 and divided by 2 to get 15
For the two big triangles, did 10x8 and got 80/2 =40
To find area of a triangle, it's: base x height, then divided by 2.
(Yes that's not a kite, but I cut it in half)
Pls answer 1 and 2 and find the solution for me.
Answer:
y=-3/2x-5
y=x+5
(-4,1)
y=-3/2x+5
y=1/2x
(6,-4)
Step-by-step explanation:
the graph was a bit blurry but I believe this is right
Please solve I need to get this done like ASAP I will have more questions by the way
Answer:
I believe its a triangular prism
Answer:
Triangular Prism
Step-by-step explanation:
Fold the shape at the dotted lines and you will see what shape it is. It's hard to explain but look up Triangular Prism and it will make sense.
THIS IS THE LAST ONE NUMBER 9
Answer:(d)
Step-by-step explanation:
Given
AB=AC
[tex]\therefore[/tex] We can write
[tex]\angle ABC=\angle ACB\ \quad \text{[angles corresponding to equal sides are equal]}[/tex]
[tex]\angle ABC=\angle BCA=\angle ACB=65^{\circ}[/tex]
Plz help me with those 2 questions plz
Answer:
1. Just do 36-9=27 so 36-27=9. The answer would be 27
Step-by-step explanation:
Answer:
4)
Plug it in and Just subtract 36 with 9.
You get 27.
So, 36 - 27 = 9
5)
Part A: 6/30
Part B: It changes because since another space was occupied there are now 5/30 parking spaces.
Hope this Helps!:)
Bob says he can estimate using two different fractions. Is he right?
Answer: Yes
Step-by-step explanation:
Troy drew the diagram below. The inner circle has a radius of 2 units, and the outer circle has a radius of 5 units. Troy says the two circles are similar.
Which statement best explains whether Troy is correct, and why?
He is correct because the inner circle is a dilation of the outer circle.
O
He is correct because the inner circle has the same center as the outer circle.
O
He is not correct because the inner circle's radius is less than the outer circle's radius.
He is not correct because the inner circle's radius is not half of the outer circle's radius.
o
Answer:A he is correct because the inner circle is a dilation of the outer circle
Step-by-step explanation: just did the test
The statement "He is correct because the inner circle is a dilation of the outer circle" is the best explanation.
What is dilation?Dilation is the process of modifying the size of an item or form by reducing or expanding its dimensions according to specific scaling variables.
The radius of the inner circle is 2 units, while the radius of the outer circle is 5 units.
Since dilations provide similar figures because multiplying by the scale factor yields proportionate sides while keeping the angle measure and form constant.
Troy is accurate if he claims the two circles are similar.
Hence, the statement (A) "He is correct because the inner circle is a dilation of the outer circle" is the best explanation.
Learn more about the Dilation here:
brainly.com/question/13176891
#SPJ6
please helpp -7 over -2 =??
Answer:
-7/-2 = 7/2 = 3.5
hope this helps
factorise
6d²e-3de²
Answer:
take common
Step-by-step explanation:
3de(2d-e)
Mark brainliest if helped
Simplify the expression.
-2.4f + 0.3f-16 - 3
-2.4f + 0.3f-16 -3=
Answer:
-2.1f-18
Step-by-step explanation:
-2.4f+0.3f=-2.1f.
-16-3=-19
Which graphs best describes the function y = 4x
Answer:
J
Step-by-step explanation:
check by multiplying each x value by 4
Answer:
D (J)
Step-by-step explanation:
y=4x is basically multiplying the x value by 4; 10*4 is 40, 20*4 is 80, and so on.
Which statements about this equations is true? PLEASE HELP ASAP
y=2x and y=2x + 4/5
A. One of them is not linear.
B. They have the same constant rate of change.
C. They have nothing in common.
D. They have the same constant of proportionality
Answer:
b
Step-by-step explanation:
they have the same constant rate of change
NEED HELP ASAP BESTIE
Answer:
I think it's 12..?
Step-by-step explanation:
Since they're supposed to be congruent and x lines up with the side on the other triangle that is 12. I think that means that x would also have to equal 12 for them to be congruent.
Help? I don't know how to work this one out
Answer:
(n + 1) (5m + 4)
Step-by-step explanation:
⇒ (n + 1) (5m + 4)
⇒ 5mn + 4n + 5m + 4
⇒ 5mn + 5m + 4n + 4
Answer:
(n + 1)(5m + 4)
Step-by-step explanation:
Given
5mn + 5m + 4n + 4 ( factor the first/second terms and the third/fourth terms )
= 5m(n + 1) + 4(n + 1) ← factor out (n + 1) from each term
= (n + 1)(5m + 4)