In what periods are the lanthanides and actinides? Where are they
placed in the periodic table? Why?
Lanthanides are in period 6 and actinides are in period 7. They are at the down part of the page so that the periodic table can fit on the page.
Answer: They are palced in 6th and 7th period below the periodic table due to their properties and to keep the balanced shape of periodic table.
plz help its due today and i don't understand its asking for the measurement of angle DEF
Step-by-step explanation:
4x+3x-5+2x+5=180 (to find x)
9x=180
x=20
Therefore DEF=AEC(vertically opposite angles are equal)
AEC=DEC
=4x +3x-5
=4(20)+3(20)-5
=135°
help please the question is easy :)
Answer= A≈190.065
Explanation= Find the area by making it a circle and then cut it in half. To find area of a circle use a=pie*r^2 or a=pie*d so a=Pie*22 which is 380.13 then divide by 2 to get ≈ 190.065
Michelle delivers books to school libraries. Her truck has a slide out ramp for unloading the books. The top of the ramp is 3 feet above the ground. The ramp itself is 5.2 feet long. What is the horizontal distance the ramp reaches?
Answer:
[tex]\sqrt{18.04}[/tex]
Step-by-step explanation:
The wording is a bit confusing, but i beleive it basically means that we're trying to find the length on a leg of a triangle with a leg length of 3 and a hypotenuse of 5.2
if we write this out as an equation, it gives us:
[tex]5.2^{2}-3^{2}[/tex]
If we then simplify this, we get 27.04 - 9, which then simplifies to 18.04.
We then need to get the square root of this number to get the answer, thus the answer is [tex]\sqrt{18.04}[/tex]
Yo someone help me, i dont understand this
Answer:white fur fabric: 12 yards
Blue striped fabric: 8 yards
Pink felt: 2 yard
2.
Step-by-step explanation:
Another Challenge! Just so you know there are 2 files that I attached!
Answer:
option 1
Step-by-step explanation:
because it does the total amount of time outstide each day
Answer:
Option 1
Step-by-step explanation:
210 minutes total = 3.5 hours
Betsy started a business 2 years ago. She had 8 customers in the first year. She added 18 customers in the second year. Betsy's goal is that in each of the next 4 years, she will have three times ad many customers as the year before. Betsy shows her calculations in the TABLE below that if she meets this goal each year, she will have 312 customers 4 years from now. is Betsy correct? Use the drop-down menus to explain your reasoning.
Expression: (8 + 18) * 3^4
Step 1: 26 * 3^4 <<< TABLE
Step 2: 26 * 12
Answer: 312
Pick the correct answer in parentheses:
Betsy's calculations in Step 1 are ( is she Correct or Incorrect) because... ( .She added incorrectly .She has 26 customers at the end of her second year .She should have multiplied 18 * 3^4 before adding 8)
Besty's calculations in Step 2 are ( is she Correct or Incorrect) Because.... ( .She did not find the correct value of 3^4 .26 * 3^4 = 26 * 12 .She did not apply the order of operations correctly)
If Betsy reaches her goal each year, she will have.. ( .2,106 .312 .1,466) customers 4 years from now.
Answer: step one is correct and the second step is incorrect
Step-by-step explanation:
Answer:
Betsy isn't correct. Betsy's calculations are wrong as she made her calculations by multiplying the base number of customers by 3 and then summing it all up for the 4 years under review instead of a continuous multiplication by 3.
Step-by-step explanation:
26 × 3 × 4 is different from 26 × 3⁴
- If Betsy meets her target for the next 4 years, she will have 2106 customers in 4 years time.
- Betsy started her business 2 years ago.
- In the first year, Betsy has 8 customers.
- In the second year, Betsy added 18 customers,
- So, her customers are now 8+18 = 26
- Betsy's goal is that in each of the next 4 years, she will have three times as many customers as the year before.
If the base number of customers is truly 26 this year,
Next year, Betsy would have 26 × 3 = 78 customers.
In 2 years, she would have 78 × 3 = 234
Thus indicating that in t years from now, the number of her customers will be
N(t) = N₀ × 3ᵗ
where
N(t) = number of customers t time from now
N₀ = number of customers at the moment = 26
t = number of years from now.
N(t) = 26 × 3ᵗ
In 4 years from now, Betsy will have
N(t=4) = 26 × 3⁴ = 2,106
So, it is evident that Betsy's calculations are wrong as she made her calculations by multiplying the base number of customers by 3 and then summing it all up for the 4 years under review instead of a continuous multiplication by 3.
26 × 3 × 4 is different from 26 × 3⁴
- If Betsy meets her target for the next 4 years, she will have 2106 customers in 4 years time.
pls like this if u found it helpful nd pls give me brainliest
HELP PLEASE! NO LINKS! TEN POINTS!
Answer:
67.8 yd
Step-by-step explanation:
this is the answer for ur question
Answer:
Hello i answered so you could give the other person brainliest
Step-by-step explanation:
have a good day!
pls help me i'll give the brainlist or whatever it is to the first correct answer. pls NO LINKS.
Answer:
628 hope it helps
Step-by-step explanation:
Can someone help pls will mark Brainly and 10+ points
Answer:
I am not able to recognise what is there in that picture sry
Answer:
11) Perimeter = 61.6inches or 61.64inches
12) Perimeter = 71.2inches or 71.24inches.
Step-by-step explanation:
Shape 11; = square 11 x 14 = 140+14 = 154 area
Perimeter square side is just three sides
= 11 x 2 + 14 = 36 inches
Shape 11 triangle = b9^2 + 14^2 = sqrt 81+ sqrt 196 = sq rt 277 = 16.643317
So we use 9+ 16.643317 =25.643317
Perimeter = 25.6 + 36 = 61.6 inches
Shape 12; =
We have 20 and 16 so we square these and take away to find a^2
20^2 - 16^2 = sq rt 144 = 12 inches vertical top line
Then repeat for missing slant edge but add instead of subtract as its a slant line we are looking for
12^2 + 10^2 = 144 +100 = 244 sq rt = 2√ 61. = 15.62 inches
Perimeter therefore is 20+20 as they both sets are congruent shapes = 40
+ 15.62+15.62 = 31.24
31.24+40= 71.24 inches
What is the theoretical probability of landing on NOT green?
A. P(green)= 4/5
B. P(green)= 3/4
C. P(green)= 1/5
D. P(green)= 5/8
Answer:
D. P(green)= 5/8
Step-by-step explanation:
Number of green appearances:
3
Total:
8
Appearances of not landing on green:
5
Theoretical probability of landing on NOT green:
5/8
Can someone help me please
Answer:
R= C x 2 - 5
C= R/2
Step-by-step explanation:
Fairview High School has an anime (Japanese animation) club that any student can attend. The relative frequency table shows the proportion of students in the high school who take Japanese and/or are in the anime club.
Given that a student is in the anime club what is the likelihood that he or she takes Japanese
Answer: about 94%
Step-by-step explanation:
To find the probability we have to find the total number of students in the anime club because it is given that the student chosen is in the anime club, which is 0.16. This is our denominator.To find the numerator, we have to find the chance of kids taking Japanese and in the anime club, which is 0.15.Just divide- > 0.15/0.16 and you get the answer = 0.937 or about 94%.Your teacher decides to determine groups in your class by pulling names out of a hat and not replacing them. What type of even is this?
Answer:
Social Loafing
Step-by-step explanation:
In social psychology, social loafing is the phenomenon of a person exerting less effort to achieve a goal when they work in a group than when working alone. It is seen as one of the main reasons groups are sometimes less productive than the combined performance of their members working as individuals.
The event is an example of a combination.
What is a combination?It is an arrangement of a set of numbers from a total set where the order of the set is not relevant.
We have,
This event is an example of a non-replacement or non-independent event.
In probability theory, an event is said to be non-replacement or non-independent if the outcome of a previous event affects the outcome of the current event.
In this case,
Once a name is pulled out of the hat, it is not replaced, meaning that the probability of pulling out a certain name changes with each draw.
For example, if a name is pulled out of the hat, the probability of pulling out that same name again decreases because it is no longer in the hat.
Therefore,
This event is non-replacement or non-independent.
Learn more about combination here:
https://brainly.com/question/14355408
#SPJ2
Solve the x
3(1.5x + 9)= -9
Answer:
x = -8
Step-by-step explanation:
3(1.5x + 9) = -9
Divide both sides by 3
1.5x + 9 = -3
Subtract 9 from both sides
1.5x = -12
Divide both sides by 1.5
x = -8
Answer:
x = -8Step-by-step explanation:
3(1.5x + 9)= -9
=> 4.5x + 27 = -9
=> 4.5x = -9-27
=> 4.5x = -36
[tex] = > \frac{45x}{10} = - 36[/tex]
[tex] = > x = - 36 \times \frac{10}{45} [/tex]
[tex] = > x = - 4 \times \frac{10}{5} [/tex]
=> x = -4 × 2
=> x = -8 (Ans)
BRAINLIEST iF CORRECT
Answer:
The spread of suvs is lower than the spread of cars
The most for suvs is 19
Step-by-step explanation:
26. Starting with x=2.222222, express x as a fraction in simplest form.
Answer:
x=2.2222222
10x=22.22222
Step-by-step explanation:then u subtract
According to the line plot, how much more is the total weight of the 1/2 of a pound dog toys than the weight of the 5/8 of a pound dog toys?
Answer: You didn’t attach the line plot but I’ll do my best.
1 pound = 16 ounces
It says of a pound dog toys, meaning that we will have to do multiplication:
1/2 * 1 pound
= 1/2 * 16 ounces
= 8 ounces
5/8 * 16 ounces
= 10
Next, find the difference:
10 - 8 = 2
The total weight of 5/8 of a pound of dog toys is 2 ounces greater than 1/2 of a pound of dog toys.
Step-by-step explanation:
Match the verbal statement to the correct value.
One–third of the product of −8 and 9
Half the sum of 8 and −6
Three times the sum of 12 and −6
One-fifth the product of 1 and −5
Five times the sum of −8 and 4
Answers:
-24
-20
-1
1
18
Answer:
down below.
Step-by-step explanation:
One–third of the product of −8 and 9 = -24
-8(9) = -72
-72 / 3 OR -72(1/3) = -24
Half the sum of 8 and −6 = 1
8 + (-6) =2
2 / 2 = 1
Three times the sum of 12 and −6 = 18
12 + (-6) = 6
6 * 3 = 18
One-fifth the product of 1 and −5 = -1
1(-5) = -5
-5/5 = -1
Five times the sum of −8 and 4 = -20
-8 + 4 = -4
-4 * 5 = -20
What is the slope of a line that passes through the points (–3, 2) and (–6, 5)?
Answer:
-1
Step-by-step explanation:
just do y2-y1 over x2-x1.
A teacher surveys a sample of students from Lake Middle School. He asks the students where they’d like to go for a field trip. He records these results: 80 choose the aquarium. 60 choose the science center. 30 choose the planetarium. 40 choose the farm. The teacher wants to figure out the relative frequency of a student choosing the aquarium. He will then estimate how many students out of all 1000 at the school are likely to choose the aquarium. Answer the questions to solve the problem. 1. How many students did the teacher survey? Write your answer in the space below. 2. What is the relative frequency of a student choosing the aquarium? Give your answer as a decimal rounded to the nearest hundredth. Show your work. Write your answer in the space below. 3. Suppose the teacher surveys one student at random. Based on the survey results, what is the estimated probability that the student chooses the aquarium? Write your answer in the space below. 4) Write and solve a proportion that the teacher can use to estimate how many students in the whole school would choose the aquarium. Show your work. Write your answer in the space below.
Answer:
https://brainly.in/question/30560329
Step-by-step explanation:
Those are the answers I found on brainly
if a duck goes moo and a cow goes quack
Where does my dad go?
Answer:
the gas station to get milk
Step-by-step explanation:
can relate:(
Answer:
no idea Imfaoo
Wut's the answer btw?
The sides of a triangle are x, x+2, and x+5. What is the perimeter?
Combine like terms.
plesee help
Answer: it = 3x+7
Step-by-step explanation:
if u add them all up x+x+2+x+5
combine like terms
it = 3x+7
chef johnson used 4 1/2 cups of flour to make 4 fruitcake. how many cups of flour are needed for 1 fruitcake
Answer:
1 1/8 Cups of flour are needed for 1 fruitcake.
Step-by-step explanation:
This is because if you divide 4 1/2(the amount of flour used for four cups) by 4 (the amount of fruitcakes he made) you would get 9/8 or 1 1/8 which is what you use for 1 fruitcake. I hope this helped!
help?????............
Answer:
Im pretty sure its the first one
Step-by-step explanation:
given the sequence 7, 12, 17, 22
which expression can be used to find the nth term in the sequence?
2n+5
3n+4
4n+3
5n+2
What is the length of side AB with endpointsA(–5, 3) and B(4, 3)? units
Answer:
9 units
Step-by-step explanation:
the y value doesnt change, so the distance from -5 to 4 is 9 units
What is the perimeter of the triangle?
help for brainliest plz
Answer:
6/2 mark me as brainliest please
Linn evaluated (40.2)(1/8) + (2.1)(-56?5) and said the answer was 18.495 is Linn's answer reasonable? estimate using compatible numbers.
Answer:
no it is not
-112.575
Step-by-step explanation: