Answer:
First Option
Step-by-step explanation:
A relation is an association or correspondence between two sets, where each element of the Domain Set corresponds to at least one element of the Range set.
The function definition says that:
A relation is a function if and only if, for each input value x, there is only one output value y. In other words, a relation is a function if each value of the Domain set has only one value associated with the Range set.
Therefore, not all relationships are functions, but all functions are relations.
The correct option is the first
2. A circular clock face has a diameter of 31 cm. What is the area of the
clock face?
A. 754.4 cm2
B.
3017.5 cm2
48.7 cm2
D.
961 cm2
Answer:
The answer is 754.4 cm²
Step-by-step explanation:
a = r²π
a = (31/2)²π
a ≈ 754.4
The area of the clock face is 754.4 cm²
What is an area?
The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the circle in a two-dimensional plane is called the area of the circle.
The area of the clock will be calculated as:-
a = r²π
a = (31/2)²π
a ≈ 754.4
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Find sin<c.
a. 12/13
b. 1
c. 13/12
d. 13/5
Answer:
a. 12/13
Step-by-step explanation:
For a right triangle, sin theta = opposite side/ hypotenuse
sin C = 24/26
Sin C = 12/13
What is the equation of the midline for the function y = 3cos(x - π ) - 4?
y = -4
y = -π
y = 4
y = π
Answer:
The correct answer option is y = -4.
Step-by-step explanation:
We are to find the equation of the mid-line for the following function:
[tex]y=3cos(x-\pi)-4[/tex]
[tex]3 cos((x - \pi ) - 4 = 3 cos(x) - 4[/tex] because [tex]cos(x-\pi) = cos(x)[/tex]
[tex]-1 \leq cos(x) \leq 1[/tex]
[tex]-3 \leq 3cos(x) \leq 3[/tex]
[tex]-3-4 \leq 3 cos(x)-4 \leq 3-4[/tex]
[tex]-7 \leq 3 cos(x)\leq-1[/tex]
The range is -7 to -1 so the midpoint is [tex]\frac{-7-1}{2} =-4[/tex]
Therefore, the equation of the mid-line for the given function is y = -4.
Find 51% of 140, Round to the nearest tenth if necessary.
Answer:71.4
Step-by-step explanation:140*51%
The answer is 71.4 because 51% =.51 and .51•140= 71.4
4. What are the next two numbers in this pattern? 2,-8,32,-128
the next two numbers in this pattern is 62,248...
Answer:
512, - 2048
Step-by-step explanation:
Note that the next term rule between consecutive terms is multiply by - 4, that is
2 × - 4 = - 8
- 8 × - 4 = 32
32 × - 4 = - 128
Continue this process to obtain the next 2 terms
- 128 × - 4 = 512
512 × - 4 = - 2048
find the explicit formula for the geometric sequence
2,6,18,54
Answer:
the explicit formula for the geometric sequence 2,6,18,54 is [tex]a_{n}=a_{1}.r^{n-1}[/tex]
2,6,18,54
Step-by-step explanation:
In the sequence given: 2,6,18,54
The common ration is 3 because
a₁ = 2
a₂= 2*3 =6
a₃ = (2*3)*3 = 2*3^2 = 18
a₄= (2*3*3)*3 =2*3^3 = 54
Here we see for a₂ 3 has power 1, for a₃ 3 has power 2 and so on.
So, the formula will be
[tex]a_{n}=a_{1}.r^{n-1}[/tex]
Here aₙ is the no of term.
a₁ is the first term of the sequence
and r is the common ratio among the sequence.
Answer:
b(n)=2⋅3 ^n−1
Rico is offered a permanent position that pays $45,000 a year. The same week, Rico is offered a full-time (8 hour days, 5 days a week) job that pays $20.50 an hour. Based on the monthly income of each job, which would you recommend to Rico and why?
Answer:
I recommend the work that pays $45,000 a year because the monthly income is greater than the other job
Step-by-step explanation:
we know that
The first work pays $45,000 a year
so
The monthly income is equal to
$45,000/12=$3,750 per month
The second work pays $20.50 an hour
Remember that
1 year= 52 weeks
so
In one year pays -----> (8)*(5)*(52)($20.50)=$42,640 a year
The monthly income is equal to
$42,640/12=$3,553.33 per month
I recommend the work that pays $45,000 a year because the monthly income is greater than the other job
What is the volume of the cone, rounded to the nearest cubic inch?
Answer: If you take 6 in and multiply by 12 You would get 72 inches
*Step By Step explanation* 6 Multiplied by 12 equals 72
Rounding would not be necessary.
Answer:
The correct option is B. 226 inches³
Step-by-step explanation:
The diameter of the cone is given to be 12 inches
So, The radius of the cone will be 6 inches
Also, The height of the cone is given to be 6 inches'
Now, we need to find the volume of the cone.
So, Volume of the cone is given by the formula :
[tex]Volume=\frac{1}{3}\pi\times radius^2\times height[/tex]
[tex]Volume=\frac{1}{3}\times 3.14\times 36\times 6[/tex]
[tex]Volume=226.08[/tex]
[tex]Volume\approx 226.08\:inches^3[/tex]
Therefore, the correct option is B. 226 inches³
What is P(A or B)...?
the answer is A.) 3/10
Option: B is the correct answer.
[tex]B.\ \ \dfrac{7}{10}[/tex]
Step-by-step explanation:We know that P(A or B) i.e. P(A∪B) is calculated by using the formula:
[tex]P(A\bigcup B)=P(A)+P(B)-P(A\bigcap B)[/tex]
Now based on the pie chart we see that the total number of students who were surveyed are: 10The number of students who love to play basketball are: 4( The students are: Fran, Juan , Ian and Ella )
Number of student who love to play soccer are: 5( The students are: Mickey, Mai, Marcus , Ian and Ella)
The number of student who love to play both basketball and soccer i.e. n(A∩B)= 2( since those students are: Ian and Ella)
Hence, we have:
[tex]P(A)=\dfrac{4}{10}\\\\\\P(B)=\dfrac{5}{10}\\\\\\P(A\bigcap B)=\dfrac{2}{10}[/tex]
Hence, we have:
[tex]P(A\bigcup B)=\dfrac{4}{10}+\dfrac{5}{10}-\dfrac{2}{10}\\\\\\i.e.\\\\\\P(A\bigcup B)=\dfrac{4+5-2}{10}\\\\\\i.e.\\\\\\P(A\bigcup B)=\dfrac{7}{10}[/tex]
Select all of the expressions that are equivalent to the expression 3x − 12 − 2(x + 12).
3x − 12 − 2x + 24
3(x − 4) − 2x − 24
3(x − 4) − 2(x + 12)
3(x + 4) − 2(x + 12)
x + 12
x − 36
Answer:
Second option
Third option
Last option
Step-by-step explanation:
You have the expression [tex]3x - 12 - 2(x + 12)[/tex], you can find the following equivalent expressions:
Apply Distributive property:
[tex]3x - 12 - 2x -24[/tex]
Group the first two terms and factor out 3:
[tex]=3(x - 4) - 2x -24[/tex] (Second option)
Apply Distributive property and then add the like terms:
[tex]=3x - 12 - 2x - 24[/tex]
[tex]=x-36[/tex] (Last option)
Group the first two terms and factor out 3:
[tex]=3(x - 4) - 2(x + 12)[/tex] (Third option)
Answer:
x
2
−
4
x
−
12
Step-by-step explanation:
help me asap please!!
Answer:
y = 1.6 x
y = 24
Step-by-step explanation:
The general equation of a direct variation is
y = k x
In this case
x = 10
y = 16
y = k*x
16 = 10*k
16/10 = k
k = 1.6
y = 1.6x
================
Let x = 15
y = 1.6 * 15
y = 24
Miss Balcon works 7 1/2 hours each day, 5 days a week as a secretary at a Christian school. How many hours would she work in 4 weeks?
Answer:
150
Step-by-step explanation:
Final answer:
Miss Balcon would work 150 hours in 4 weeks as a secretary at a Christian school.
Explanation:
In order to find out how many hours Miss Balcon would work in 4 weeks, we need to first calculate the number of hours she works in a week. She works 7 1/2 hours each day, and since there are 5 days in a week, she works a total of 7 1/2 x 5 = 37 1/2 hours in a week.
Now, to find out how many hours she would work in 4 weeks, we can multiply the number of hours she works in a week by 4. So, 37 1/2 x 4 = 150 hours.
Therefore, Miss Balcon would work 150 hours in 4 weeks.
What is the median of the data set {100,805,58,600,450,45,70
Answer:
100
Step-by-step explanation:
Write the numbers in increasing order:
45, 58, 70, 100, 450, 600, 805
Now, pick the middle number.
The median is 100.
Answer:
100
Step-by-step explanation:
Set the set in order first,
45, 58, 70, 100, 450, 600, 805
Now clear each side by one step after another
45, 58, 70, 100, 450, 600, 805
58, 70, 100, 450, 600
70, 100, 450
100
Hope this helps
sine rule and area of any triangle
find area of this triangle to 1 decimal place please
I got 61.1 as the answer but it's wrong apparently
thanks
Answer:
94.1 m²
Step-by-step explanation:
Use the sine rule to find BC
[tex]\frac{BC}{sin82}[/tex] = [tex]\frac{12}{sin40}[/tex] ( cross- multiply )
BC × sin40° = 12 × sin82° ( divide both sides by sin40° )
BC = [tex]\frac{12sin82}{sin40}[/tex] ≈ 18.487
Area = [tex]\frac{1}{2}[/tex] × 12 × 18.487 × sin58° ≈ 94.1
If two ratio are equal they form a ___. I need help IMMEDIATELY. I am going to my grandmas and I need to finish quickly.
two ratios are equal and form a proportion.
Answer:
they form a proportion.
The bottom of a ladder must be placed 4 feet from the base of a pole barn. The ladder is 14 feet long. How far above the ground will the ladder touch the pole barn? Round to the nearest tenth
Check the picture below.
Taylor school, a student must have an average of at least 75% to get a “C”in a course. Taylorhas scores of 71%, 82%, and 76% on your algebra tests. What minimum score must she have on her fourth test to guarantee a “C” in the course?
Answer:she would have at least gotten a 75 to pass.
Step-by-step explanation:76+82+71+75=304
304÷4= a solid 76%
Please help me with no.2
Answer:
My best guess is b. 111
Step-by-step explanation:
She first catches 54 and returns them then she catches 70 and 13 of those she had previously caught, so she only caught 57 new frogs. So within the sample time period she had caught a total of 54+57= 111 frogs.
Answer: 111
Step-by-step explanation:
she catches 54 and puts on the leg bands. The next day she catches 70 but 13 of them were from the previous day.
So, 54+70-13=111
10 PLEASSEEEEEE¡1111
Answer:
A. 10 fluid ounces
Step-by-step explanation:
One fluid ounce is equal to one quart. This means she had 64 fluid ounces in her jug. She poured 6 3/4 fluid ounces in 8 mugs, so you would multiply 6 3/4 by 8 to get 54. Now you go back to the original amount, 64, and subtract 54 from that. 64 minus 54 equals 10. I hope this helped!
The worded steps to find this answer
Answer:
118°
Step-by-step explanation:
Since it is an isosceles triangle, two angles must be the same.
Also angles in a triangle add up to 180° and from this we can deduce that
x + ( 31 + 31 ) = 180
( Simplify )
x + 62 = 180
( - 62 from both sides )
x = 118°
5 - ___________ a0 = 14
Answer:
Final answer is [tex]a_0=-9[/tex]
Step-by-step explanation:
Given equation is [tex]5-a_0=14[/tex]
Now we need to solve the given equation 5-a_0=14 for the unknown variable [tex]a_0[/tex] .
We can do that by isolating [tex]a_0[/tex]
To isolate a_0, let's subtract 5 from both sides
[tex]5-a_0-5=14-5[/tex]
[tex]-a_0=9[/tex]
multiply both sides by -1
[tex]-a_0(-1)=9(-1)[/tex]
[tex]a_0=-9[/tex]
Hence final answer is [tex]a_0=-9[/tex]
Compute the standard deviation for the set of data 2, 5, 6, 8, 14
Answer:
4.4721
Step-by-step explanation:
Help please. Question is in picture.
Hi, hope you’re having a good day!
Could you please add the picture?
Thanks, have a good day! ❤️❤️
The picture is not shown, if you could add it, I would be happy and try and answer as best I can! Have a good day! :)
Please help ASAP first right answer gets brainliest
Answer:
1. 31/99 2. 215/999 3. 6704/9999
Answer:
31/100, 215/100, 419/1250
Convert the complex number z = -12 + 5i from rectangular form to polar form.
Answer:
[tex]z=13(\cos 157\degree +i\sin157\degree)[/tex]
Step-by-step explanation:
The given complex number is
[tex]z=-12+5i[/tex]
The polar form of this complex number is;
[tex]z=r(\cos \theta +i\sin \theta)[/tex], where
[tex]r=\sqrt{(-12)^2+5^2}[/tex]
[tex]r=\sqrt{144+25}=\sqrt{169}=13[/tex]
and
[tex]\theta =\tan^{-1}(\frac{5}{-12})[/tex]
This implies that;
[tex]\theta=157\degree[/tex] to the nearest degree.
Hence the polar form is
[tex]z=13(\cos 157\degree +i\sin157\degree)[/tex]
estimation of 9.2 * 6.8
Step-by-step explanation:
62.56
9.2 * 6.8 = about 63
Since you are estimating, first round the numbers.
Change 9.2 to 9 and change 6.8 to 7. This leaves you with 9 * 7, which is 63, and since you are estimating, your answer doesn’t need to be exact.
If r=12 and t=20, find S.
Answer:
d. 53.1°
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you ...
Cos = Adjacent/Hypotenuse
You are given the lengths of t (hypotenuse) and r (adjacent to S), so you can find the angle from ...
cos(S) = r/t = 12/20
S = arccos(12/20) ≈ 53.1° . . . . . use the inverse cosine function
Answer:
d. 53.1
Step-by-step explanation:
this is the correct answer on ed-genuity, hope this helps! :)
factor by grouping 20x^3-12x^2+15x-9
Factor out common terms in the first two terms, then in the last two terms
4x^2(5x - 3) + 3(5x - 3)
Factor out the common term 5x - 3
= (5x - 3)(4x^2 + 3)
What is a parabola?
Answer:
In mathematics, a parabola is a plane curve that is mirror-symmetrical and is approximately U-shaped.
Answer:
Step-by-step explanation:
a symmetrical open plane curve formed by the intersection of a cone with a plane parallel to its side. The path of a projectile under the influence of gravity ideally follows a curve of this shape.
A parabola is a two-dimensional, mirror-symmetrical curve, which is approximately U-shaped when oriented as shown in the diagram below, but which can be in any orientation in its plane. It fits any of several superficially different mathematical descriptions which can all be proved to define curves of exactly the same shape.
which expressions are equivalent to the log8 1 * log3 27. check all that apply.
a - 3 * 8
b - 3 * log8 8
c - 1
d - 0
Answer:
It's d. 0.
Step-by-step explanation:
The log (to any base) of 1 = 0, so log8 1 = 0, and the whole expression is equal to 0:
0 * log3 27 = 0.
The expression log8 1 * log3 27 evaluates to 0, so the equivalent expression from the options is d - 0.
Explanation:The expressions we need to evaluate are log8 1 * log3 27. The log of 1, no matter what the base, is always 0. This is because any number raised to the power of 0 is 1. So, log8 1 is equal to 0. Now, evaluate log3 27. The log base 3 of 27 is 3 because 3 cubed (or 3 to the power of 3) is 27. So, log3 27 equals 3. Thus, log8 1 * log3 27 = 0 * 3 = 0. Comparing with the given options, we find that the only equivalent expression is option d - 0.
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