Answer:
The area of the semi-circle is 35.8 cm².
Step-by-step explanation:
The length of the arc is given by:
[tex] s = r\theta [/tex] (1)
Where:
s: is the length of the arc of semi-circle = 15 cm
r: is the radius
θ: is the angle in radians
Since we need to calculate the area of the semi-circle, the angle is:
[tex] \theta = \frac{360}{2} = 180 = \pi [/tex]
From equation (1) we can find the radius:
[tex] r = \frac{s}{\theta} = \frac{15}{\pi} [/tex]
Now, the area of the semi-circle is:
[tex] A = \frac{\pi r^{2}}{2} = \frac{\pi (\frac{15}{\pi})^{2}}{2} = 35.8 cm^{2} [/tex]
Therefore, the area of the semi-circle is 35.8 cm².
I hope it helps you!
How many solutions does 3(4x - 8) = -24 + 12x have?
Answer:
Infinitely many solutions
Step-by-step explanation:
Jacob wrote the number 3.555x10.5 in standard form. What number did he write?
Answer:
37.3275
Step-by-step explanation:
I just put it on the calculator :)))))
A dolphin swam 712 miles in 38 hour. What was its average speed in miles per hour (mph)?
Simone used 2 1/3 kilograms of flour to bake a cake . She used 4/5 kilograms of flour more to bake a second cake. How much flour did she use to bake the second cake?
Answer:
3.13 kilograms used for the second cake
Step-by-step explanation:
because the fractions have different denominators you have to multiply the denominators together to figure out what to change them too. but instead you can just figure out what the decimal for each is. 1/3 is 0.33, and 4/5 is 0.80. all you do is add these together to get 1.13. so now all you do is add 2+1.13 to get 3.13.
If x=17 which equations is true?
A. 2(x-3)=31
B. 3(25-x)=24
C. 3(15-x)=6
D. 2x-3=28
I need help with
(6 + 4)² ÷ 4 – 8 + 6 · 8 and 16 + 3(8 + 2) + 6² ÷ 9
show work please!
What is the value of -2(x+5) Please I'm in need of help
Answer:
-2x - 10
Step-by-step explanation:
-2 x X = -2x
-2 x 5 = -10
Put them together to get:
-2x - 10
Answer:
-2(x) or (-2×x)
then you get = -2x
then you take
-2×+5 or (-2×5) you'll get = -10
last but not least you join the equation
and the answer will be
= -2x-10
A wire is bent into semicircles. How long is the wire to the neared hundredth? The diameter is 32 cm
Answer:
200.96
Step-by-step explanation:
2πr is the perimeter or circumference of a circle
.
diameter is 32cm so radius=16cm
2*3.14*16=100.48cm is long
The students in Ms. Gonzales' fifth grade math class earned the following grades on their first test: 46, 56, 64, 64, 72, 76, 77, 82, 94, 96,99 What was the mean of the grades? (round to the nearest whole number) A. 826 OB. 75 O c. 76 OD. 64 O E 83
Answer:
75
Step-by-step explanation:
mean = average so add up all your numbers, then divide by the amount of numbers so
46 + 56 + 64 + 64 + 72 + 76 + 77 + 82 + 94 + 96 + 99 = 826
826 ÷ 11 = 75.09 (about)
Find the value of x.
Answer:
x = 5
Step-by-step explanation:
26x + 10x = 180°
36x = 180
x = 180/36
x = 5
Does anyone wanna trade in adopt me Imao or have like sum really good pets yall wanna give me cuz I’m amazing tehe anyways I’m u wanna my user is Matrix0425
Answer:
ill awnswer 4 that person that wants brainliest
Step-by-step explanation:
Answer:
no
Step-by-step explanation:
Please someone just explain this to me right I will give you brainlest if you pit down the explanation on how you got that.
Answer: w = 2
Explanation: To find the slope of a line, we use the formula y = mx + b, where m is the slope and b is the y-intercept. Since there is a variable, w, we can use this formula: m = 7 + w.
We know that m, or the slope of the line, is 9. If we substitute the value of 9 into that equation... we should get 9 = 7 + w.
It's simple mathematics from here.
7 plus what is 9?? 2. That's your answer. If you need help with slope-intercept and rate of change WITHOUT variables (besides x and y, of course), feel free to let me know!!
Where did I get that 7?
Usually, we use the slope formula to find the slope of a line when we know two points on the line. But if we already know the slope of a line, we can use the slope formula to find a missing coordinate of a point on the line.
We will be using this formula: y - y₂ = m(x - x₁)
This equation is useful when we know:
one complete coordinate point (x₁, y₁)and the slope of the line (m)and we want to find the other point.
(x₁, y₁) is the known point. In our example, it's (-7,-7).
(x, y), sometimes written as (x₂,y₂), is (-6, w) and represents the missing coordinate.
EXAMPLE (SEE IMAGE):
slope (m) = 3
y − y1 = m(x − x1)
We know m, and also know that (x1, y1) = (3,2), and so we have:
y − 2 = 3(x − 3)
That is a perfectly good answer, but we can simplify it a little:
y − 2 = 3x − 9
y = 3x − 9 + 2
y = 3x − 7
EXAMPLE IMAGE:
-2/5 + 1 1/3 find the sum
Answer: =14/15
Step-by-step explanation: Hope this help :D, Can I have a Brainliest I really needed it please!
Pls help ASAP!!!
Buffy attends a night school, and the ages of the people in his study group are: 42, 55, 36, 41, 38, 33, and 46. What is the best estimate of the population mean for ages of night school attendees? Enter your answers rounded to the nearest tenth.
Answer:41.6
Step-by-step explanation:
Pythagorean Theorem Digital Escape Puzzle 5,Need Answer Immediately!!!
Answer: a = 6.53
Step-by-step explanation:
Answer: its HCFD i just did it
Step-by-step explanation:
In the rectangle below, SU= 4x-2, RT = 5x-10, and m ZSVT= 84º.
Find RV and m ZVUR.
R
S
U
T
Answer:
RV = 15, ∠ VUR = 48°
Step-by-step explanation:
The diagonals of a rectangle are congruent , so
RT = SU , that is
5x - 10 = 4x - 2 ( subtract 4x from both sides )
x - 10 = - 2 ( add 10 to both sides )
x = 8
Then
RT = 5x - 10 = 5(8) - 10 = 40 - 10 = 30
The diagonals bisect each other , then
RV = 0.5 × 30 = 15
---------------------------------------------------------------
∠ RVU = ∠ svt = 84° ( vertical angles )
RV = UV ( diagonals are congruent and bisect each other )
Then Δ RVU is isosceles with base angles congruent , then
∠ VUR = [tex]\frac{180-84}{2}[/tex] = [tex]\frac{96}{2}[/tex] = 48°
Jenny works at a video store. She earns
$6.25 an hour plus $6 for each
membership she sells.
Write a formula that will help Jenny
determine how much she will earn in one
week.
Let's let
a = total amount earned
h = hours worked in one week
b = number of memberships sold in one week
Answer:
You're answer would be 6.25h+6b=a
Mr. Eng brought different kinds of fruit drinks to his class picnic.
Fruit Drinks
16
14
12
10
1.11,
.
Apple
Grape
Peach
Lemon Orange
Kind of Drink
How many more orange drinks than apple and grape drinks did Mr. Eng bring?
O A 4
OB. 5
O C.9
O D.11
OE.15
Answer:
A
Step-by-step explanation:
estimate 12 8/9 - 10 1/6
Answer: 49/18
Step-by-step explanation:
Amal designed a silver necklace pendant in the shape of a cone. The slant height of the cone is 5 millimeters, and the radius of the cone is 3 millimeters. What is the volume of the silver pendant, rounded to the nearest tenth? Use 3.14 for π
O 37.7 mm³
O 113.0 mm³
O 47.1 mm³
O 141.3 mm³
Answer:
i dont know exacly but i know its not 141.3
Step-by-step explanation:
i put that answer and got it wrong
Answer:
37.7
Step-by-step explanation:
Which of the following trigonometric ratios are correct?
Hi there! In this problem, you should have the knowledge of three basic Trigonometric Ratio.
sinA = opposite/hypotenusecosA = adjacent/hypotenusetanA = opposite/adjacentNow that we know three basic ratio. Let's check each choices!
sin50° = d/cThis choice is wrong because we focus on the 50° angle. When we focus on 50°, sin50° should be d/x and not d/c.
sin50° = c/xThis choice is also wrong because in ratio, it's cos50° that adjacent/hypotenuse.
tan50° = d/cThis choice is correct! As ratio states, tanA = opposite/adjacent.
tan50° = x/cThis choice is wrong. x/c is a reciprocal of cosine which is 1/cos. We call the reciprocal of cosine as secant or sec in short.
cos50° = x/dThis choice is wrong as x/d is a reciprocal of sine which is 1/sin. We call the reciprocal of sine as cosecant or cosec/csc in short.
cos50° = c/xThis choice is right by the ratio. Nothing really much to explain since we follow by ratio that is defined.
Answer
tan50° = d/ccos50° = c/xQuestions can be asked through comment.
Furthermore, tan also has its reciprocal form itself which is called cotangent also known as cot in short.
Hope this helps, and Happy Learning! :)
The product ( the result of a multiplication problem ) of 2 rational expressions is x+22x−3 with the restrictions x≠– 3, x≠32, x≠4 and x≠ 5. Find an expression that meets the criteria. You may leave your answer in factored form.
Answer:
x + 22x - 3 = 4 (5x) + 3 (x-1)
Step-by-step explanation:
x + 22x - 3
23x - 3
20x + 3x - 3
5x + 15x + 3x - 3
5x (1 + 3) + 3 ( x - 1)
4 (5x) + 3 (x-1)
Plz answer i will give brainliest!!!!
Norma needs to find the sum of the fractions below. 3/8 +5/6 Norma starts by multiplying the first fraction by 3/3.
By which number should she multiply the second fraction?
A.8/8
B.4/4
c.3/3
d.undefined
Answer:
Its A
Step-by-step explanation:
Because if you add 3+5 that is 8 so 8/8
A triangle has sides with lengths of 72 inches, 78 inches, and 30 inches. Is it a right triangle?
Answer:
yes
Step-by-step explanation:
Using the converse of Pythagoras' identity.
If the square of the longest side is equal to the sum of the squares on the other 2 sides then the triangle is right.
longest side = 78 and 78² = 6084
72² + 30² = 5184 + 900 = 6084
Then the triangle is right
A trebuchet launches a projectile from a hilltop 30 feet above ground level on a parabolic arc at a velocity of 40 feet per second. The equation h=−16t2+40t+30
models the projectile's h height at t seconds. How long will it take for the projectile to hit its target on the ground (to the nearest tenth of a second)?
2.8 seconds
3.1 seconds
3.5 seconds
3.9 seconds
a) (-6)* = -6° b) (-3) = -3$ c) 82 = (-8)
[tex]( 5 + 4 {)}^{2} = {5}^{2} + {4}^{2} [/tex]
Answer:
pues yo pienso que es 8 es que no se muy bien
the volume of the cylinder above is 2,119.5^m3 what is the radius of the cylinder
Answer:
7.5
Step-by-step explanation:
Pi * r^2 * 12 = 2119.5
r^2 = 56.25
r = sqrt(56.25) = 7.5
simplify 3+4(y-7)+5y
Answer:
9y-25
Step-by-step explanation:
Answer:
9y-25
Step-by-step explanation:
Math
Simplify (2.2 x 10')= (1 104) and write the
answer in scientific notation.
a. 2.2 x 10°
b. 22
c. 2.2 x 1011
d. 2.2 x 10?
Answer:
2.2 × [tex]10^{11}[/tex]
Step-by-step explanation:
2.2 × [tex]10^{7}[/tex] + 1 × [tex]10^{4}[/tex]
2.2 × 1 = 2.2
7 + 4 = 11