Answer:
1-63
2-49
Step-by-step explanation:
1.) A=63°
REMEMBER A STRAIGHT LINE MUST EQUAL TO 180°
Let's take our given angle 117°
Now let's take 180° and subtract it from 117°
180°-117°=63°
2.) 49°
The same process applies here
180°-131°=49°
what is the opposite of 6.2
Answer:
Are you looking for -6.2?
Step-by-step explanation:
If not let me know!
Annual income of A is 10% more than of B whereas income of B is 20% more than that of C. If monthly income of C is $ 2000 then what is the sum of monthly incomes of A, B and C?
A. $ 6,872
B. $ 7,046
C. $ 7,772
D. $ 7,040
Answer:
7040
Step-by-step explanation:
C= 2000
B = 20/100 x 2000 = 400 + 2000 = 2400
A= 10/100 x 2400 = 240+2400= 2640
2000 + 2400 + 2640 = 7040
Maria has a spinner that has 10 equal sections each containing a different number from 1 to 10 Maria determines about how many times a spinner will land on a number that is greater than seven and 250 spends at her work is shown below what mistake did Maria make if any.
A. Maria has the formula reversed it should be the total number of sections over the number greater than seven
B. Maria should have used three in the numerator because there are three numbers greater than seven
C. Maria should multiply the number of sections in the spinner rather than the total number of spins
D. Maria calculated the prediction correctly and did not make any mistakes
Answer:
There are 3 numbers greater than 7 on this spinner: 8, 9 and 10. Mariah wrote 4 instead of 3, which makes her probability higher.
She should have:
3/10(250) = 750/10 = 75
a square has a perimeter of 60 cm. what is the length of each side?
Answer:
15! all the sides are the same length
Step-by-step explanation:
60/4
15
4x + 3 + x² – x
uhhh... help ?
Answer:
=x
Step-by-step explanation:
What is the answer to this
Answer:
Hi
Step-by-step explanation:
[tex]v = \pi \: d \\ \\ v = 14 \times \pi = 14\pi \: cm[/tex]
in this formula
d is diameter
v is circumference
because the question asked the answer in terms of pi so we write the pi its self
hope this help you
god bless you and us
fourteen decreased by three times four
Answer:
3 times a number is 3x
decreased by 14 is '- 14'
is 4 is '= 4'
So we have:
3x - 14 = 4
Add 14 to both sides:
3x = 18
Divide 3 to both sides:
x = 6
Step-by-step explanation:
The expression for the given statement "fourteen decreased by three times four" is written as 14 - (3×4), and its solution is 2.
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The given statement "fourteen decreased by three times four" can be written in the form of expression as,
14 - (3×4)
Now, if we solve the expression, the solution will be,
14 - (3×4)
= 14 - 12
= 2
Hence, the expression for the given statement "fourteen decreased by three times four" is written as 14 - (3×4), and its solution is 2.
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[tex]y = - .011x + 24.9[/tex]
describe this relationship in words.
Step-by-step explanation:
The given relation is :
[tex]y=-0.11x+24.9[/tex] ...(1)
We need to describe this relationship in words.
The general equation of a line is given by :
y = mx +c ...(2)
comparing equations (1) and (2).
m = -0.11 and c = 24.9
It shows that the slope of the line is -0.11 and the y-intercept is 24.9.
What's the length of x
Answer:
x = 8√2
Step-by-step explanation:
Use Pythagorean Theorem to solve for x.
x² + x² = 16²
⇒ 2x² = 256
⇒ x² = 128
⇒ x = 8√2
Element X is a radioactive isotope such that every 22 years, its mass decreases by
half. Given that the initial mass of a sample of Element X is 50 grams, how long
would it be until the mass of the sample reached 41 grams, to the nearest tenth of a
year?
Answer: The time taken for the mass to reduce from 50 g to 41 g is 6 years
Step-by-step explanation:
Expression for rate law for first order kinetics is given by
[tex]t=\frac{2.303}{k}\log\frac{a}{a-x}[/tex]
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant
a - x = amount left after decay process
a) for completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
[tex]t_{\frac{1}{2}}=22 years[/tex]
[tex]k=\frac{0.693}{t_{\frac{1}{2}}}=\frac{0.693}{22}=0.0315years^{-1}[/tex]
b) for mass to reduce from 50 g to 41 g
[tex]t=\frac{2.303}{0.0315}\log\frac{50}{41}[/tex]
[tex]t=6years[/tex]
The time taken for the mass to reduce from 50 g to 41 g is 6 years
Write the equation in slope-intercept form of the line that is parallel to the graph of the equation and passes through the given point. y= x+3; (-2,-5)
Answer:
y=x^2 + 3x - 3
Hope it helped :)
I need this answer hurry please
Answer:
21 ft²
Step-by-step explanation:
3*5 + 2*3 = 21
Choose all the values that are less than the fraction 12/16? Convert all to decimals and then compare. A. 12.16 D. 33 1/3% . B. 12.16% E. 0.5 C. 3/4
*Please help me i dont really understand this.*
Answer:
D and E
Step-by-step explanation:
You are told to covert all of the values to decimals.
First, convert 12/16 to a decimal. You must do 12÷16, which is 0.75.
Now, do this for all of the options:
A) 12.16 is already in decimal form. This is far greater than 0.75.
B) 12.16% : to get from a percent to a decimal, divide it by 100.
12.16 ÷ 100 = 0.1216, which is smaller than 0.75.
C) 3/4 : divide 3÷4=0.75. This is equivalent to 12/16, so you don't select it.
D) 33 1/3 % : again, divide by 100.
33 1/3 ÷ 100 = 0.333333, which is smaller than 0.75
E) 0.5 is smaller than 0.75.
Answer:
-1/8 < 0.33 < 3/8 < 75% < 1 5/8
5/6 + (-4/9) -(-2).
Answer:
= 2 7/18
Step-by-step explanation:
Follow the PEMDAS order of operations.
Add and subtract left to right
=43/18 (as an improper fraction)
=2 7/18 (as a mixed number)
Three bells toll together at the same time after the first bell stays quiet for 12 seconds, the
second bell for 15 seconds and the third bell for 18 seconds. During a duration of 30 minutes,
how many times will the three bells toll together?
Answer:
10 times
Step-by-step explanation:
Here, we want to get the number of times the three bells toll together
Now, what we have to do here is to find the number of seconds it will take them to fill together
To find this, we need to get the lowest common multiple of 12, 15 and 18
The lowest common multiple of these three numbers is ;
180
180 seconds
Now, since 60 seconds is 1 minute
The number of minutes in 180 seconds is 180/60 = 3 minutes
So, as we can see, they can sound together once in 3 minutes;
The number of times they will sound together in 30 minutes is 30/3 = 10 times
Every day Sandra eats 1/8 pound of blueberries. If she does this for 9 days, how many pounds of blueberries will she have eaten?
Answer:
1 1/8 pounds
Step-by-step explanation:
9 x 1/8 = 9/8 or 1 1/8
WILL GIVE BRAINLIEST TO CORRECT ABSWER. can someone please solve 2,4,6, and 8
Answer:
pls resnap, i tried to zoom in but i can't see clearly
rachel owns a cupcake shop. last week she used 42.5 pounds of sugar making cupcakes. this week she used 26 pounds of sugar. find the percent change in the amount of sugar used. classify as a percent increase or decrease
Answer:
decreased by 39%
Step-by-step explanation:
deacreased by
42.5-26= 16.5
16.5÷42.5=38.82352941
rounded to 39%
Answer:
Decreased by 39%, hope this helps! :D
Step-by-step explanation:
Anyone help this is due today 1/2(t+8)
Answer:
t/2 + 4
Step-by-step explanation:
Answer:
Its 1/2t + 4
T = 1/2 + 4/1 = 4/2 = 2
Your answer is 2
Step-by-step explanation:
I hope this helps!
What is the slope of the line with endpoints at (-3, 6) and (5.-6)?
Answer:
-3/2
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-6-6)/(5-(-3))
m=-12/(5+3)
m=-12/8
simplify
m=-3/2
(7, 14)
(2, 20)
(20, 3)
(0, 13)
Is this relation a function?
yes
no
5. A circle has a diameter of 8.5 inches. d - 8.5 in. Which measurement is closest to the circumference of the circle in inches? A 26.7 in. B 49.6 in. C 53.2 in. D 15.4 in.
Answer:
A. 26.7
Step-by-step explanation:
The diameter is 8.5, & to find the circumference, you need a RADIUS. So you divide 8.5 by 2 & you get 4.25 as the RADIUS. The formula to find the circumference of a circle is: C= 2*(pie) * radius.According to the given measurement, the circumference of this circle is closest to 26.7 inches. Hence option A is correct.
Use the concept of a circle defined as:
A circle is a closed, two-dimensional object where every point in the plane is equally spaced from a central point. The line of reflection symmetry is formed by all lines that traverse the circle.
Additionally, every angle possesses rotational symmetry around the center.
The circumference of a circle = 2πr
Given that,
Diameter of the circle = 8.5 inches
Since the radius of the circle is = diameter/2
Therefore,
The radius of this circle = 8.5/2 inches
The radius of this circle = 4.25 inches
Now, from the above formula of circumference,
Circumference of this circle = 2π(4.25)
Since π ≈ 3.14
So,
Circumference of this circle = 9x3.14
Circumference of this circle = 28.26 inches.
Hence,
The circumference is closest to 26.7 which is option A.
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Please i need help ASAP
Find the volume of the prism.
7 m
20 m
24 m
The volume of the prism is
I NEED HELP
Answer:
i dont know im sorry
Step-by-step explanation:
HELP ASAP I WILL GIVE BRAINLEST
Answer:
wheres the question?
Step-by-step explanation:
have a nice day and stay safe:)
Answer:
Ok:)
Step-by-step explanation:
Make a sketch of the cross section resulting from the slice shown in the right square pyramid below. Then, using complete sentences, describe the cross section.
Answer:
Square cross section
Also, the smaller pyramid created is similar to the big one.
Step-by-step explanation:
Supongamos que el 20% de los objetos fabricados por una empresa son defectuosos. Escogemos 4 objetos al azar. Hallar la probabilidad de que (a) 2 sean defectuosos, (b) 3 sean defectuosos, (c) ninguno sea defectuoso.
Responder:
0,1536
0.0256
0.4096
Explicación paso a paso:
Dado que :
p = 0,2
Número de ensayos, n = 4
1 - p = 1 - 0,2 = 0,8
Probabilidad de que 2 sean defectuosos;
Usando la fórmula de distribución binomial:
P (x = 2)
P (x = x) = nCx * p ^ x * (1 - p) ^ (n - x)
P (x = 2) = 4C2 * 0.2 ^ 2 * 0.8 ^ 2
P (x = 2) = 6 * 0,04 * 0,64
P (x = 2) = 0,1536
3 están defectuosos:
P (x = 3) = 4C3 * 0,2 ^ 3 * 0,8 ^ 1
P (x = 3) = 4 * 0,008 * 0,8
P (x = 3) = 0,0256
Probabilidad de que ninguno sea defectuoso:
P (x = 0) = 4C0 * 0.2 ^ 0 * 0.8 ^ 4
P (x = 0) = 1 * 1 * 0,4096
P (x = 0) = 0,4096
Usando la distribución binomial, se encuentra que hay una probabilidad de:
a) 0.1536 = 15.35% que 2 sean defectuosos.
b) 0.0256 = 2.56% que 3 sean defectuosos.
c) 0.4096 = 40.96% que ninguno sea defectuosos.
Para cada objeto, solo hay dos resultados posibles. O está defectuoso o no lo es. La probabilidad de que un objeto sea defectuoso es independiente de cualquier otro ítem, lo que significa que se utiliza la distribución binomial para resolver esta cuestión.
Distribución binomial:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
Los parámetros son:
n es el número de ensayos. p es la probabilidad de éxito en un ensayo x es el número de éxitosEn este problema:
4 objetos, por eso [tex]n = 4[/tex].20% son defectuosos, por eso [tex]p = 0.2[/tex].Item a:
Esta probabilidad es P(X = 2), o sea:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 2) = C_{4,2}.(0.2)^{2}.(0.8)^{2} = 0.1536[/tex]
Probabilidad de 0.1536 = 15.35% que 2 sean defectuosos.
Item b:
Esta probabilidad es P(X = 3), o sea:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 3) = C_{4,3}.(0.2)^{3}.(0.8)^{1} = 0.0256[/tex]
Probabilidad de 0.0256 = 2.56% que 3 sean defectuosos.
Item c:
Esta probabilidad es P(X = 0), o sea:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 0) = C_{4,0}.(0.2)^{0}.(0.8)^{4} = 0.4096[/tex]
Probabilidad de 0.4096 = 40.96% que ninguno sea defectuosos.
Un problema similar es dado en https://brainly.com/question/25132113
what's the double diameter of 10
Answer:
5
Step-by-step explanation:
5x2=10 and 10 is your diameter
Answer:
5
Step-by-step explanation:
10 /2=5
Tabitha has 1/2 loaf of bread. If she slice the bread into 9 equal pieces, what fraction of the total loaf of bread will each piece be?
Answer:
1/18
Step-by-step explanation:
Total loaf of bread = 1/2
Number of equal slices cut from the loaf = 9
The fraction of total loaf each slice will be :
Total loaf / number of slices
1/2 ÷ 9
1/2 * 1/9
= 1/18
Hence, each slice is 1/18 of the total loaf
x - 21 = 19
x = please help
Answer:
x=40
Step-by-step explanation:
plz make the other person the brainliest thanks!