Mathematics Middle School

The base of this regular right pyramid is a square. What is its surface area?
base edge = 8in
Height = 12in

Answers

Answer 1
p=4(8)=32  inches

B=8^2=64  inches2

T.S.A.=1/2(32)(12)+ 64           
   =192+ 64 
     =  256 inches2
Answer 2

Answer:

C

Step-by-step explanation:

Related Questions


Les drew the number line shown to add 2.5 + (–25). He says the sum is 22.5.


Which is a correct description of his work?
A. His number line is correct, and the correct sum is 22.5.
B. Les should have started at 0, moved right to 2.5, and then moved left to –25. The correct sum is –23.5.
C. Les should have started at 0, moved right to 2.5, and then moved left 25 units. The correct sum is –22.5.
D. The correct sum is 22.5, but his number line is incorrect. Les should have started at 0, moved left to –2.5, and then moved right 25 units.

Answers

The correct answer is C.

Answer:

Answer = c

Step-by-step explanation:

                                                                           

Sam intends to roll a six sided cube 100 times. What is the probability model he can use to predict whether or not each roll will give a result that is not a prime number?

Answers

It’s 0.5 probability chance because it is still the same cube being used for the probability of it landing on a prime number

The outcomes of rolling fair six sided die is [tex] \{1,2,3,4,5,6\} [/tex]. The prime numbers in the above outcomes are [tex] \{2,3,5\} [/tex]. The probability of not rolling a prime number is [tex] p=\frac{3}{6}= 0.5 [/tex].

Each trial is independent.

In the given experiment of 100 trials, the binomial probability model can be used to predict the number of occurrence of non-prime numbers (X). The probability mass function is

[tex] P(X=x)=C(100,x)p^x(1-p)^{100-x},x=0,1,2,3,...,100 [/tex]. Since [tex] p=0.5,1-p=0.5 [/tex]

[tex] P(X=x)=C(100,x)0.5^x(0.5)^{100-x},x=0,1,2,3,...,100 \\
P(X=x)=C(100,x)(0.5)^{100},x=0,1,2,3,...,100 [/tex]

Which expression represents the multiplicative inverse of -9/7

A. -7/9

B. 9/7

C. 7/9

D. -9/7

Answers

I'm pretty sure the answer is A

Answer:

-7/9

Step-by-step explanation:

To find a multiplicative inverse, switch the numerator and denominator in the fraction. The sign stays the same. In this problem, we have -9/7. Switching the numerator and denominator, we get -7/9.

I am always happy to help :)

The Lin family has a fish tank

Answers

Is that it? What about the Lin family?

Answer: And... what about the fish tank can you give more detail?

Step-by-step explanation:

Find the variance and standard Deviation of the probability distribution of the random variable x, which can take the values 1,2,3 given that p(1) = 10/33 p(2) = 1/3 p(3) =12/33?

Answers

what are the given answers

i needs help ........ .

Answers

first lets add the 2 distances on the map:

3 3/4 + 5 1/4 = 9 inches  ( 3/4 + 1/4 = 1, 3+5 = 8, 8+1 = 9 )

1/2 inch on the map = 4 miles
 
there are 2  1/2 inches to 1 inch so 4 miles x 2 = 8 miles to 1 inch

so now multiply 9 inches x 8 miles = 72 total miles

Which rule matches the function graphed below?
y = x + 3
y = x - 4
y = x - 3
y = x + 4

Answers

Y=x-3
Because if the coordinates are 0,-3 it's 0 (which equals x) -3 = -3
And 2 - 3 = -1

Hope this makes sense (sorry I’m really bad at explaining things)

Please help. I’ll give brainliest

Answers

the correct answer is 4/15

Answer:

4/15

Step-by-step explanation:

Multiples of 4: 4, 8, 12, 16, 20, 24, 28 (there are 7)

19: There is 1

Total: 7+1=8

8/30=4/15

Which system of equation can represent the equation?

Answers

Answer:

         log(x+3)
y₁ =  --------------
            log(4)

         log(2 + x)
y₂ = ----------------
             log(2)

Explanation:

1) Here you must use the property named change of base of the logarithm.

That rule is:

[tex]log_{a}b= \frac{log_c{b}}{log_ca} [/tex]

2) Changing to base 10 that is:

[tex]log_{b}a= \frac{loga}{logb} [/tex]

3) Using it with the given equation, you get:

[tex]log_4(x+3)= \frac{log_(x+3)}{log(4)} log_2(2+x)= \frac{log(2+x)}{log(2)}[/tex]

4) Now, to set your system you can make the left side of the equation equal to y₁ and the right side equal to y₂

         log(x+3)
y₁ =  -------------
           log(4)

         log(2 + x)
y₂ = ---------------
            log(2)

And that is your system which is the first choice of the list.

Answer:

A on edge 2021

Step-by-step explanation:

how many times greater is one hour than one minutes

Answers

I believe it is 60 times greater
Sorry If I’m wrong

11499 round to the nearest thousand

Answers

you forgot to put the decimal in there so i could round it 

The answer would be 11000.

The weather report says there is an 85% chance it will be very hot tomorrow. Should you get ready to use the air conditioner? Explain.

Answers

Yes because the probability rate is high.

Based on the 85% chance of very hot weather, it is reasonable to prepare to use the air conditioner. Weather forecasts with high probabilities can guide us in making practical preparation decisions for comfort and safety.

The weather report indicates there is an 85% chance that it will be very hot tomorrow. Given this high probability, it would be reasonable for you to prepare to use the air conditioner. Decisions based on weather forecasts often involve considering the likelihood of different outcomes and planning accordingly.

Weather is the atmospheric conditions at a particular place over a short period of time, and preparing for it helps us manage daily activities and comfort levels. When the probability of a specific weather event, such as extreme heat, is high, it is generally wise to prepare for that scenario. By planning to use the air conditioner, you can ensure you're able to maintain a comfortable environment during the hot weather.

the sum of 2 consecutive even integers is 234, what is the larger integer

Answers

x= smaller integer
x+2= larger integer

Add the integers

x + (x + 2)= 234
2x + 2= 234
subtract 2 from both sides

2x= 232
divide both sides by 2

x= 116 smaller integer

x+2= 118 larger integer


CHECK:
116 + 118= 234
234= 234


ANSWER: The larger consecutive even integer is 118.

Hope this helps! :)
Let one of the numbers be x.
The other number will be x + 2.

Sum of the 2 numbers is 234.
x + x + 2 = 234
2x + 2 = 234
2x + 232
x = 116

One number = 116
Other number = 116 + 2 = 118

Answer: Larger number = 118

What is the quotient in polynomial form?

Answers

The correct answer is A) 2x+5.

Completing the synthetic division, first bring down the leading coefficient:
-1|  2   7   5
                   
      2

Now multiply this by the divisor, -1, and write it under the 7:
-1|  2   7   5
          -2     
      2

Now add the two values in the middle, 7 and -2:
-1|  2   7   5
          -2      
       2  5

Multiply the 5 by the -1:
-1|  2   7   5
          -2  -5
      2   5   

Add the 5 and -5:
-1|  2   7   5
          -2  -5
      2   5   0

This corresponds with an answer of 2x+5 and remainder of 0.

Jack is trying to figure out a rule for this table. He comes to the conclusion that the rule is f(x)= 3x. Why is Jack's rule incorrect?

Answers

He is incorrect because if a number is before a letter than the number is the coefficient. and the coefficient is always multiplied by the letter its next to. since f is being distributed to x (multiplied because of the parentheses) then fx=3x which means f = 3 which means 3x=3x

The following table shows the data collected from four random samples of 50 students from a small middle school regarding their reading preferences

Based on the results in the table, what type of reading is preferred by the majority of students in the samples? (1 point)
A. Novels
B. Short Stories
C. Classics
D. Comic Book

Answers

I am pretty sure it is A. Novels

Answer:

A. Novels Hope this helps!

Step-by-step explanation:

Evaluate the expression 7x2y, when x = 4 and y = 2. 112 224 542 718

Answers

7x2y

Keep in mind that all the terms are just being multiplied together, like this:

7 * x * 2 * y

When we plug in 4 for x and 2 for y, we end up with this:

7 * 4 * 2 * 2 =
28 * 4 = 
112

Your answer should be 112.

224 will be your answer

7 x^2  y

7 (4 ^2) 2=?

4x4=16

16x 7= 112

112x2 =224

Which word best describes 8(2x +4)

Answers

Final answer:

The word that best describes 8(2x + 4) is multiplication. When we multiply a number by an expression, we distribute the multiplication to each term in the expression. Simplifying further, 8(2x + 4) becomes 16x + 32.

Explanation:

The word that best describes 8(2x + 4) is multiplication. In this expression, the number 8 is being multiplied by the expression 2x + 4. When we multiply a number by an expression, we distribute the multiplication to each term in the expression. Therefore, the expression becomes 8 * 2x + 8 * 4.

Simplifying further, we get 16x + 32. So, the word that best describes 8(2x + 4) is multiplication.

Will give brainliest. How long is this side?

Answers

35 is the answer.


Have questions? let me know (:


Good Luck! 
Your answer is 35 :) 

Have a great day!!

If I'm correct give me 5 stars and brainliest. 

Justin is exchanging dollars for rolls of quarters and rolls of dimes at a bank. Each roll of quarters has a value of $10 and each roll of dimes has a value of $5. He exchanges $90 and receives 11 rolls of coins. How many of each type of roll of coins did he receive?

Answers

Well, it really depends but it could be 9 rolls of quarters, 5 rolls of quarters and 8 rolls of dimes, 4 rolls of quarters and 10 rolls of dimes, 3 rolls of quarters and 12 rolls of dimes, etc.

Answer:

Justin got 7 rolls of quarters and 4 rolls of dimes.

Step-by-step explanation:

Let the roll of quarters be x

Let the rolls of dimes be y

As total money received is $90, the equation becomes;

[tex]10x+5y=90[/tex]    .....(1)

And he got 11 roll of coins, so equation becomes;

[tex]x+y=11[/tex] or [tex]x=11-y[/tex]    .... (2)

Substituting the value of x from (2) in (1)

[tex]10(11-y)+5y=90[/tex]

[tex]=> 110-10y+5y=90[/tex]

[tex]=> -5y=-110+90[/tex]

[tex]=> -5y=-20[/tex]

So, y = 4

As [tex]x=11-y[/tex]

So, [tex]x=11-4[/tex]

x = 7

Hence, Justin got 7 rolls of quarters and 4 rolls of dimes.

Please help me with these. You'll be respected forever. I really need help with these.

a) please write 5.(6) % as a common fraction or a mixed number. The (6) is repeated.

b) Eight pounds of peanuts cost $24.00. Six pounds of walnuts cost half as much. Which is more expensive and by how much?

c) Eight pounds of peanuts cost $24.00. Six pounds of walnuts cost half as much. How much will Jim pay for 3 lbs of peanuts and 6 lbs of walnuts?

d) Write “four hundred dollars and seventy two cents”... as a fraction (and then reduce).

I will give brainliest if correct. Thanks.

Answers

17/30, The peanuts by a dollar per pound (peanuts cost $3, walnuts cost $2), $21, 40072/100 (and I'm not sure how you would reduce it) Good luck!

Answer:

b) Peanuts, $1 per lb

c) $21

Step-by-step explanation:

b)

Peanuts= 12*2=$24

Walnuts= 6*2=$12

1 lb of peanut= 3 lb

1 lb of walnut= 2 lb

24 is greater than 12

3-2=1

$1 greater per lb

c)

1 lb of peanut= 3 lb

1 lb of walnut= 2 lb

3*3=9

2*6=12

9+12= $21

Sorry I only figured out b and c :(

Two classes have a total of 50 students. One of the classes has 6 more students than the other. How many students are in the larger class?

Answers

class 1= 6+x
class 2 = x
total= 50
so you need to find the x
50=6+x+x
50=2x+6
50-6=2x
44=2x
22=x
22+6
28 is the larger class

17 is the sum of a number and 6 write this in an equation for the word sentence.

Answers

x= a number

A number plus 6 is equal to 17.

x + 6= 17


ANSWER: x + 6= 17

Hope this helps! :)
Let the number be x.

17 is the sum of a number and 6
⇒ x + 6 = 17

Answer: Equation: x + 6 = 17

To solve x:
x+ 6 = 17
x = 17 - 6
x = 11

Answer: x = 11

To the nearest tenth, find the approximate distance between points A and C. Graph with coordinates A negative 4, negative 4. B negative 2, 5. C 2, 1. D 2, negative 4.

A. 3.3 units
B. 7.8 units
C. 5.2 units
D. 3.6 units

PLEASE HELP!!!!!

Answers

we have that
A(-4,-4) B(-2,5)  C(2,1)  D(2,-4)

step  1
find the distance AC with the formula 
d=√[(y2-y1)²+(x2-x1)²]------> dAC=√[(1+4)²+(2+4)²]----> dAC=√61 units
dAC=√61-----> dAC=7.8 units

the answer is
the option
B. 7.8 units

what is the sum of the polynomials
(-x^2+9)+(-3x^2-11x+4).
• -4x^2-2x+4
• -4x^2-11x+13
• 2x^2+20x+4
• 2x^2+11x+5

Answers

The first step for solving this expression is to remove the first set of parenthesis.
-x² + 9 + (-3x² - 11x + 4)
Now,, remember that when there is a "+"sign in front of the parenthesis,, then the parenthesis in the expression remains the same. This means that all you need to do for the second side of the expression is remove the parenthesis.
-x² + 9 + -3x² - 11x + 4
Collect the like terms that have an exponent of two.
-4x² + 9 - 11x + 4
Add the regular numbers together.
-4x² + 13 - 11x
Lastly,, use the commutative property to reorder the terms and get your final answer.
-4x² - 11x + 13
Since we cannot simplify this expression down any further,, our final answer is going to be -4x² - 11x + 13 or option B.
Let me know if you have any further questions.
:)

The sum of the given polynomials is -4x²-11x+13. Therefore, option B is the correct answer.

What is addition of algebraic expression?

Addition of Algebraic Expressions is the process of collecting like terms and adding them. Identify and add the coefficients of like terms and sum them to find the final expression of given problems.

Given that, (-x²+9)+(-3x²-11x+4).

Here, -x²+9-3x²-11x+4

= (-x²-3x²)-11x+9+4

= -4x²-11x+13

Therefore, option B is the correct answer.

Learn more about the addition of algebraic expressions here:

https://brainly.com/question/21443100.

#SPJ7

the stem and leaf plot below shows the number of points scored in each basketball game a team played during a season in how many games were more than 40 points scored?
|Stem | Leaf|
| 6 | 1 6 7|
| 5 |2 2 8|
| 4 |4 5 8 9|
| 3 |0 2 6 6 6|
| 2 | 0 8 |

A. 4
B. 6
C. 7
D. 10

Answers

The correct answer is D) 10.

Counting the number of leaves that have stems of at least 4, there are 10.
Answer is D 10 my good sir

A new patio will be an irregular hexagon. The patio will have two long parallel sides and an area of 360 square feet. The area of a geometrically similar patio is 250 square feet, and it’s long parallel sides are 12.5 feet apart. What is the corresponding distance on the new patio

Answers

The length of the new patio will be evaluated as follows:
The area scale factor=(area of new patio)/(area of original patio)
=360/250
=36/25
but
Linear scale factor=√(area scale factor)
Linear scale factor=√(36/25)=6/5
thus the length of the patio will be:
length=(linear scale factor)*(length of the original patio)
=6/5×12.5=15 ft

The table shows the results of spinning a spinner several times. (Don’t mind my answer)

Answers

The answer is 1/4. To find this, add all the frequencies together, then you get 12. Then add B and C together to get 4. Divide 12 by 4 and get 1/4.

The experimental probability of spinning a B or a C is [tex]\( \frac{1}{4} \)[/tex].

To find the experimental probability of spinning a B or a C, we need to sum up the frequencies of outcomes B and C and then divide that by the total number of spins.

Given frequencies:

Outcome A: 3

Outcome B: 2

Outcome C: 1

Outcome D: 4

Outcome E: 2

Total frequency of B and C: 2 (from outcome B) + 1 (from outcome C) = 3

Total number of spins: Sum of all frequencies = 3 + 2 + 1 + 4 + 2 = 12

Experimental probability of spinning a B or a C: [tex]\(\frac{\text{Total frequency of B and C}}{\text{Total number of spins}} = \frac{3}{12} = \frac{1}{4}\)[/tex]

So, the experimental probability of spinning a B or a C is [tex]\(\frac{1}{4}\)[/tex].

To know more about experimental probability, refer here:

https://brainly.com/question/34234573

#SPJ2

LAST QUESTION HELP A GIRL OUT

Answers

Using the given points, you can write the equation as ...
[tex]y=7.5\left(\dfrac{16.875}{7.5}\right)^{\frac{x-1}{3-1}}=7.5\cdot (2.25^{\frac{1}{2}})^{x-1}\\=7.5\cdot 1.5^{x-1}=7.5\cdot 1.5^{-1}\cdot 1.5^{x}\\y=5\times 1.5^{x}[/tex]

48 pounds are equal to approximately _______ kg.

Answers

Hey there!

1 pound = 0.453592kg
48 x 0.453592 = 21.7724

Answer : 21.7724 kg, rounding off would be 22kg.

Hope this helps. - M
48 pounds are equal to approximately 21.7724 kg.

You need to convert pounds to kg, first. The closest that number 21.7724 relates to is 21. So it is about 22 kg.

Hope this helps,
    -DJ-
Other Questions
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