Answer:
Step-by-step explanation:
A cube has 6 faces so:
Area of 1 face = 486/6 = 81 cm^2.
Lateral area = 4 * face area
= 4 * 81
= 324 cm2.
Answer:
one face = 81 cm²
lateral area = 324 cm²
Step-by-step explanation:
486/6 = 81 cm²
81 x 4 = 324 cm²
A 90% confidence interval for u using the sample results X = 131.2, s=55 , and n= 50 Round your answer for the point estimate to one decimal place, and your answers for the margin of error and the confidence interval to two decimal places. Margin of error:? 90 Confidence Interval?
Answer:
131.2 ;
12.8 ;
(118.4, 144)
Step-by-step explanation:
Given :
X = 131.2, s=55 , and n= 50
Point estimate of the mean :
Since, sample size is large (n > 30) ; the sample mean = population mean according to the center limit theorem :
Margin of Error = Zcritical * s / sqrt(n)
Zcritical at 90% = 1.645
Margin of Error : 1.645 * (55 / sqrt(50))
Margin of Error : 1.645 * 7.7781745
Margin of Error = 12.795097
Margin of Error = 12.8
The confidence interval (C.I) :
C.I = x ± margin of error
C. I = 131.2 ± 12.8
(131.2 - 12.8) ; (131.2 + 12.8)
(118.4, 144)
Describe these points with a double inequality
Answer:
E
Step-by-step explanation:
so much words sis sossy
Answer:
Step-by-step explanation:
[tex]-3$<$ x\le 13[/tex]
Round 88,855 to the nearest hundred.
Answer:
88,900
Step-by-step explanation:
:) hope this helps! give it a like!
Answer:
88,900
Step-by-step explanation:
you are rounding 88,855 to the nearest hundred so you really just need to look at the hundred's place
855 rounded to the nearest hundred is 900 (round your 8 to 9 since the tens place is a 5 or above)
Jonah has a piece of string that is 70 inches long. He cuts the string into 6 equal pleces. How many Inches long is each piece of string?
Answer:
11.66666666
Step-by-step explanation:
70 divided by 6
Step-by-step explanation:
Each string length=70in÷6
= 11.666in
8 batteries cost $20 how much does 1 batterie cost
Answer: 2.5
Step-by-step explanation:
20/8=2.5
Answer:
do 20/8
Step-by-step explanation:
1 battery costs $2.50
Mr. Mann asked his class to form a number pattern using the rules:
Use the number 6 as the first term.
To find the other term, subtract 2 from the previous term, then multiply by 2.
The first two numbers in the pattern are 6 and 8.
What is the fourth number in the pattern?
Answer:
20
Step-by-step explanation:
when you subtract 2 from 6 you get 4. so you multiply 4 into 2 which give the answer 8. when you subtract 2 from 8 you get 6 and then you multiply 6 to 2 which gives the answer 12... next you subtract 2 from 12 which gives the answer 10. so you multiply 10 to 2 Which gives the final answer for you which is 20.
Mr. Mann asked his class to form a number pattern using the rules:
Use the number 6 as the first term.
To find the other term, subtract 2 from the previous term, then multiply by 2.
The first two numbers in the pattern are 6 and 8.
What is the fourth number in the pattern?
Angel is going to invest in an account paying an interest rate of 6.5%
compounded continuously. How much would Angel need to invest, to
the nearest hundred dollars, for the value of the account to reach
$230,000 in 13 years?
Answer:98800
Step-by-step explanation:
Answer:
98800
Step-by-step explanation:
Find the length of the missing side. If necessary, round to the nearest tenth.
Answer:
17.3
Using the pythagorean theorem, 400-100=300.
Square root of 300.
Answer:
tbh the only answers that make sense is A. and C.
Step-by-step explanation:
I think I would go wit A. tho =) but it's up to u
Kate has 10 stickers. One half of them are purple. How many of Kate’s stickers are purple?
Answer:
5
Step-by-step explanation:
Half of ten is five so Kate’s has five purple stickers
1.) Solve the equation.
−2(x + 6) + 19 = 11 − 3x
x =
2.)Solve the equation.
x − 23 = 4(2x + 3) − 7
x =
3.) Solve the equation.
1/0 (x + 131) = −2(2 − x)
x =
number three is 1 over 10 ok
Answer:
1) x = 4
2) x = -4
Step-by-step explanation:
1) -2x - 12 + 18 = 11 - 3x
-2x + 7 = 11 - 3x
x = 4
2) x - 23 = 8x + 12 - 7
-7x - 23 = 5
-7x = 28
x = -4
Find the missing digit:
9._3 + 8.6 = 18.33
Answer:
7
Step-by-step explanation:
18.33 - 8.6 = 9.73
Answer:
7
Step-by-step explanation:
18.33-8.60=9.73
Which values of a, b, and c represent the answer in simplest form?
9/11 ÷ 5/11 = a b/c
A) a=1,6-99, C= 55
B) a=1,b=55, C = 99
C) a=1,b=4,C=5
D) a=1,b=5,C=4
Please help me with this
Answer:
20²-(13²-5² )=y²
400-(169-25)=y²
400-144 =y²
256=y²
y=16
Step-by-step explanation:
In the diagram above is a 2 right angle triangles
the length of such diagrams is found using the pythagoras theorem.
in finding the length of the vertical by pythagoras gives..(13²-5²)^-2=12
The dimensions of the top of a rectangular rag are (2x + 1) feet and (3x +4) feet. Which equation represents the area of the top of the rug, A, in square feet?
Answer:
A=2(2x+1)(3x+4
Step-by-step explanation:
pls help identify the scale factor
Answer:
the scale factor is 3 ......
Emily is entering a bicycle race for charity. Her mother pledges $0.40 for every 0.25 mile she bikes. If Emily
bikes 7 miles, how much will her mother donate?
Her mother will donate $ [
WILL MARK BRAINLIEST PLS HELP
An architect is making a plan for a new circular playground. If 64 feet is the playground's radius, how much fencing needs to go up to keep the kids in the circle?
100.48 feet
200.96 feet
401.92 feet
Answer:
209.96
Step-by-step explanation:
we know that the circumference of the circle is equal to
C = [tex]\pi D[/tex]
we have
[tex]D = 64 ft[/tex]
substitute would be
[tex]C = \pi (64) = 64\pi ft[/tex]
assume that [tex]\pi = 3.14[/tex]
64[tex]64\pi = 64 * 3.14 = 200.96 ft[/tex]
A bus entered the freeway and traveled at a constant speed of 80 mph. Two hours later a second bus followed the first bus, entering the freeway from the same point as the first bus, and traveled at a constant speed of 65 mph. How long will it take the second bus to catch up with the first bus?
Answer:
It will take about 15-20 Minutes to catch up to that bus.
Step-by-step explanation:
65+ 20= 85 so its a tad bit over but it works.
12x −2 + 6 > 3 is.........?
Answer:
x > -1/2 is the answer
Step-by-step explanation:
Describe these points with a double inequality
Answer:
13>x≥3
Step-by-step explanation:
20 points!!
Which of the following coordinates are exactly 5 units from (2, -1)? Select all that apply.
(-2, 2)
(5, 3)
(-3, -1)
(3, 4)
pls i need this done soon :) !
Can someone plz help me on this I beg u
Answer: 131 cubic inches
=========================================
Work Shown:
Volume = length*width*height
Volume = 8.2*4.1*3.9
Volume = 131.118
Volume = 131 cubic inches
The LM = 3x - 2, LN = 2x + 1, and MN = 5x - 2.
Suppose that the area of a square lawn is 4x^2 + 16x + 16. What is the length of one side of the lawn?
Answer:
2x+4
Step-by-step explanation:
remember the formula (a+b)^2=a^2+b^2+2ab
in this case, 4x^2 would be a^2, 16 would be b^2, and 16x would be 2ab
so, the variable a would be 2x and the variable b would be 4
so, you can turn 4x^2+16x+16 into (2x+4)^2
and since the area of a square is (one of its sides)^2, or in this case (2x+4)^2, the length of one side of the lawn will be 2x+4
problems where you have to use the (a+b)^2=a^2+b^2+2ab formula to turn trinomials into binomials squared are very common, so make sure to look out for questions like these and be ready to use this formula
which three lengths can NOT be the lengths of the side of a triangle
Answer:
D. 21 m, 6 m, 10 m
Step-by-step explanation:
Answer:
D. 21m, 6m ,10m
Step-by-step explanation:
that is the correct answer
help please i need help
12. Triangle ABC is shown on the coordinate plane. If it is translated 4 units to the left and 3
units up, what are the coordinates of the vertices of the image?
A. A (1.1), B'(6,0), C (1.4)
B. A'(-1,1), B'(0,6), C (-4,-1)
C. A' (1.-1), B'(6,0). C'(-4,1)
D. A'(-1,-1), B'(0.6), C'(4-1)
Answer:
Sorry about that I didn't read the question correctly but the answer is B.
Step-by-step explanation:
All you are doing is moving the points 4 units to the left and 3 units up. Hope this helped! :)
One box of pencils has 500 pencils in it. Mike bought a box of pencils that has 3% more pencils in it. How many pencils were in the box that Mike bought?
Answer:
Mike's box of pencils contains 515 pencils.
Step-by-step explanation:
3% of 500 is 15. If we add that onto the original 500, we get 515.
please answer : ) will give brainly go to last problem for it to make sense
Answer:
30%
Step-by-step explanation:
if 60% were thin mint and 10% were Samoas that is 70% of cookies. remaining 30% must be trefoils. hope this helps
A student solved the equation 2x+6=12 using algebra tiles. incorrectly says the solution is 9. Solve the equation. What mistake might the student have made? btw giving brainliest!