Bout to do a math test,who is willing to help me?
me, if you can also help me!
What is the explicit formula for the sequence below?
4, -12, 36, -108 ...
Answer:x ×-3
Step-by-step 4×-3= -12
-12 × -3= 36
and so on
Combine like terms to create an equivalent expression: 6.7+3.5x+3.3-4.7x
Step-by-step explanation:
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Find the surface area of the regular pyramid
Answer:
26.8
Step-by-step explanation
Question 6 of 25
Suppose that many large samples were taken from a population, and the
sample proportions centered around 0.25. Which of the following is most
likely the population parameter?
A. 0.15
B. 0.45
C. 0.35
D. 0.25
SUBMIT
Answer: .35
Step-by-step explanation:
PLEASE HELP ME WITH THIS
Answer:
A. (0, 60)
B. 15x
Step-by-step explanation:
The initial value is the same as the y-intercept, which is 60 or (0, 60).
The rate of change would be the same as the slope. To find the slope, you do rise/run. You move 15 units up, and 1 to the right. That would be 15x.
Hope this helps!
Find the surface area of the following figures.
with solution please. T-T
Answer:
I will do 1 2 3 and 5 for you:
Since a cube has a given length of 5, we know that all sides will be the same therefore your lengths will be the same.
There are 6 sides of a cube so,
5 x 5 = 25 area of one flat surface.
Now 25(an area of one flat surface) x 6(flat surfaces) = 150 cm for question 1
We need to find area of the two circles:
3(given radius)^2(radius being squared) x 3.14(pi)
3 x 3 = 9
9(after radius being squared) x 3.14(pi) = 28.26(area of one circle)
28.26 x 2 = 56.52 (area of 2 circles)
Now we need to find the round surface, but first we need to find circumference:
2 x 3.14 x 3 = 18.84
18.84(circumference) x 5(height) = 94.2 (area of round surface)
Now lets add all the given areas to find surface area:
56.52 + 94.2 = 150.72 cm^2 is your answer for question 2
2 x 4 = 8
8 x 2 = 16
4 x 5 = 20
20 x 2 = 40
2 x 5 = 10
10 x 2 = 20
Add all given areas:
16 + 40 + 20 = 76 cm^2 is your answer for question 3
452.16 cm^2
4 x 3.14 x 6^2
4 x 3.14 x 36 = 452.16 cm^2 is your answer for question 4
8 x 4 = 32, 32 divided by 2 = 16
since there are 4 sides,
4 x 16 = 64
Don't forget the bottom!
4x 4 = 16
Lets add the given areas:
64 + 16 = 80 for question 5
Each table in a library can seat up to 8 people. There
are enough tables for 96 people. How many tables are
there in the library?
88, 12, 72, 14?????
Answer:
96 divided by 8 = 12
Step-by-step explanation:
5th grade math. correct answer will be marked brainliest
Answer:
4ft, 7 inches
Step-by-step explanation:
4 ft (48 inches), 7 inches
amplitude of h(x)=-4sin(2x-7)+3
Answer:
Use the form asin(bx−c)+d to find the variables used to find the amplitude, period, phase shift, and vertical shift.
a=−4
b=2
c=7
d=3
Find the amplitude |a| .
Amplitude: 4
Find the period using the formula 2[tex]\pi[/tex] / |b|.
Find the phase shift using the formula c / b .
Phase Shift: 7/2
List the properties of the trigonometric function.
Amplitude: 4
Period: [tex]\pi[/tex]
Phase Shift: 7/2 (7/2 to the right)
Vertical Shift: 3
Step-by-step explanation:
From the top of an 95 meter cliff, Tim spots a hiker down below at an angle
of depression of 22 degrees. To the closest meter, how far is the hiker from
the base of the cliff?
Step-by-step explanation:
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Please help me with these 2 questions!! Will mark Brainliest :)
Answer:
diameter=12ft
radius=7 in
Step-by-step explanation:
Find the volume of the cylinder.
Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi.
please help im tring to pass this class
Volume of a cylinder is the area of the base x the height.
Area of base = pi x r^2 = 3.14 x 2^2 = 12.56
Volume = 12.56 x 8 = 100.48 units^3
Answer:
32 pi units^3
Step-by-step explanation:
The volume of a cylinder is given by
V = Bh where B is the area of the base
The base is a circle
The area of a circle is given by
A = pi r^2
The radius is 2
A = pi (2)^2 = 4pi
The area of the base is 4pi
The height is 8
V = 4pi *8
V = 32 pi units^3
please help, which conditions form a unique quadrilateral?
Answer:
Option d
Step-by-step explanation:
A quadrilateral can be constructed uniquely if the lengths of its four sides and a diagonal are given. A quadrilateral can be constructed uniquely if the lengths of its three sides and two diagonals are given. A quadrilateral can be constructed uniquely if its two adjacent sides and three angles are given.
So according to this, it could be option d. A rhombus with two acute angles and sides of length 12ft.
Hope it helps :)
Though I may be wrong :( [Sorry if it is]
P.S.:If you're still not sure if it's correct, you can refer to the para above and choose your answer
Have a great day!
Mary wanted to know how many sheets of paper were recycled. There were 20 students in her class and each student recycled 15 sheets of
paper.
Which equation could Mary use to solve her problem?
O A. 20+15 = n
B. 20 x 15 = n
Oc. 15 + 20 =n
D. 20-15 =n
E. 20 = 15 =n
Answer:
B. 20 × 15 = n
Step-by-step explanation:
There are 20 people in the class so if each of them recycle 15 sheets then you get your total. To find this answer do the equation 20 × 15 = n.
8. Which statement can be represented by the equation shown?
9x-2=8x
Answer:
A or the 1st one
Step-by-step explanation:
Angelo is making 9 dollars per hour but, loses 2 dollars due to the bus fee. So in math form that would be:
9x - 2
And the second part is Tom makes 8 dollars per hour but doesn't have to pay for bus fee. In math form that would be;
8x
So put that together that would be
9x - 2 = 8x
which function is represented in this graph
Answer:
C. f(x) = |x + 5| - 1
Is the point (3, -2) a solution to the following system of equations? How do you know?
y=−3x+7
y=2x−8
Answer:
YES
Step-by-step explanation:
Any straight line can be represented by an equation of the form
Y = mX + b
where m is the slope and b is the Y intercept, so these two equations are lines. The only solution is where the two lines cross, so must satisfy both equations. Plugging in 3 for X and -2 for Y we get
Y = -3X + 7
-2 = -3(3) + 7
-2 = -9 + 7
-2 = -2 True
AND,
Y = 2X - 8
-2 = 2(3) - 8
-2 = 6 - 8
-2 = -2 True
So since both are true, yes (3, -2) is the solution.
can someone help me :(
Answer:
A is the correct answer
.......................
Answer:
A. y+116+30=180
Step-by-step explanation:
A straight angle is 180°.
all the given angles make up a straight angle, so they add to 180°.
I need the answer fast pls
Answer:
C. 15
Step-by-step explanation:
You just need to add the number of dots, hoped this helped and was fast enough
(HELP FINAL EXAM) If two states are selected at random from a group of 40 states, determine the number of possible outcomes if the group of states are selected with replacement or without replacement.
Answer:
With replacement, there are 1600 possible outcomes.
Without replacement, there are 1560 possible outcomes.
Step-by-step explanation:
Chosen with replacement:
State is chosen, then put back in the group, then another state can be chosen. In both cases, there will be 40 possible outcomes, as the first taken state is placed back. So
40*40 = 1600
With replacement, there are 1600 possible outcomes.
Chosen without replacement:
State and chosen and is not replaced.
So, for the second state, there will be only 39 possible outcomes.
40*39 = 1560
Without replacement, there are 1560 possible outcomes.
Lincoln High School has 78 seniors, 116 juniors, 119 sophomores, and 107 freshmen. Three student names are chosen randomly without replacement. What is the probability of, without replacement, a senior being chosen first, followed by a sophomore, and followed by a junior?
Answer:
11/320
Step-by-step explanation:
the probability of a senior being chose first is 22 (seniors) divided my total number of students (80) is .275 percent.
multiplied by the probability of a sophomore being chosen 10/80 which equals .125.
multiply those together and you get your probability. 0.034375 or 11/320
Help plz:)))I’ll mark u Brainliest
Answer:
31
Step-by-step explanation:
Given :-
A right angled triangle with 2 sides 36 and 15.And we need to find the value of AB .
Pythagoras Theorem :-
In a right angled triangle the sum of squares of two smaller sides is equal to the square of Hypotenuse .Using that ,
[tex]:\implies[/tex] h² = p² + b²
[tex]:\implies[/tex] h² = 36² + 15²
[tex]:\implies[/tex] h² = 1296 + 225
[tex]:\implies[/tex] h² = 1521
[tex]:\implies[/tex] h = 31
Hence the value of Hypotenuse is 31 .
Which of the following is equivalent to tan 5pie/6?
Answer: should be -1/ sqrt of 3. If it asks to rationalize it could be -sqrt of 3/3
Step-by-step explanation:
Two houses on the same side of the street have house numbers that are consecutive
even integers. The sum of the integers is 58. What are the two house numbers?
Answer: 28 and 30
Step-by-step explanation:
Let the house numbers on the street be represented by n and n+2 sine they are consecutive even integers. Therefore,
n + (n + 2) = 58
2n + 2 = 58
2n = 58 - 2
2n = 56
n = 56/2
n = 28
Therefore the second number will be:
= n + 2
= 28 + 2
= 30
The numbers are 28 and 30
Please Help!
Megan can paint three times faster than Julie. Together they can paint in 2 hours. How long would it take each of them alone? Which equation can be used to solve this?
(1/x)+(1/3x)=2
2(1/x)+2(1/3x)=1
(1/x)+(1/3x)=1
4(1/x)+2(1/3x)=1
Answer:
The second one
2(1/x) + 2(1/3x) = 1
Step-by-step explanation:
1/x + 1/(3x) = 1/2
multiply both sides by 2
2(1/x) + 2(1/(3x) = 1
Of the four choices given, which two, when written as a system, have a solution of (-4,5)?
х
-1
2
3
5
y
2
-1
-2
4
2x+y=-3
-2x+y=-3
х
-1
2
3
7
у
0
3
4
-8
0 2x+y=-3 and
х
-1
2.
3
5
y
2
-1
-2
--4
0-2x+y=-3 and
Х
-1
2.
3
5
y
2
-1
-2
-4
Answer:
hiyoh
Step-by-step explanation:
According to a report from a business intelligence company, smartphone owners are using an average of 22 apps per month. Assume that number of apps used per month by smartphone owners is normally distributed and that the standard deviation is 4. Complete parts (a) through (d) below. If you select a random sample of 36 smartphone owners, what is the probability that the sample mean is between 21 and 22?
Answer:
0.4332 = 43.32% probability that the sample mean is between 21 and 22.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
According to a report from a business intelligence company, smartphone owners are using an average of 22 apps per month.
This means that [tex]\mu = 22[/tex]
Standard deviation is 4:
This means that [tex]\sigma = 4[/tex]
Sample of 36:
This means that [tex]n = 36, s = \frac{4}{sqrt{36}}[/tex]
What is the probability that the sample mean is between 21 and 22?
This is the p-value of Z when X = 22 subtracted by the p-value of Z when X = 21.
X = 22
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{22 - 22}{\frac{4}{sqrt{36}}}[/tex]
[tex]Z = 0[/tex]
[tex]Z = 0[/tex] has a p-value of 0.5.
X = 21
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{21 - 22}{\frac{4}{sqrt{36}}}[/tex]
[tex]Z = -1.5[/tex]
[tex]Z = -1.5[/tex] has a p-value of 0.0668.
0.5 - 0.0668 = 0.4332
0.4332 = 43.32% probability that the sample mean is between 21 and 22.
What is the distance between the florist’s shop (D) and the car wash (E)? Explain using coordinate subtraction.
(pls help ill give brainliest! i have 5 hours to complete so much help)
Answer:
hi! once you link the picture I will answer the problem.
Step-by-step explanation:
Answer: The distance between the library and the florist’s shop is the length of CD¯. The endpoints of this line segment are C(3, 4) and D(3, -3). Because the x-coordinates of both points are the same (3), the length of CD¯ can be found by subtracting the smaller y-coordinate from the greater y-coordinate: CD = 4 – (-3) = 4 + 3 = 7 units. The distance between the library and the florist’s shop is 7 blocks.
Step-by-step explanation: sample answer
How many thousands are in 24,692? _____ thouands
Answer:
twenty four
Step-by-step explanation:
