21. A right pyramid has a surface area of 258 cm-.
A right cone has a base radius of 4 cm. The
cone and pyramid have equal surface areas.
What is the height of the cone to the nearest
tenth of a centimetre?

Answers

Answer 1

Answer:

4/7  4 by 12

Step-by-step explanation:


Related Questions

23. Describe the slopes of perpendicular lines

Answers

Answer:

The slopes of two perpendicular lines are negative reciprocals of each other. This means that if a line is perpendicular to a line that has slope m, then the slope of the line is -1 / m. For example, we found that the slope of the line y = (1/2)x + 3 is 1/2.

The slopes of perpendicular lines when multiplied together gives the product as -1.

What is the slope of straight line?

The slope of a straight line is the tangent of the angle formed by it with the positive x axis as the reference.

The negative slope indicates the rate of decrease while the positive shows the rate of increase.

Suppose the two perpendicular lines have equations as follows,

y = m₁x + c₁  and y = m₂x + c₂.

Suppose m₁ = tan θ

Then, m₂ = tan (90° + θ)

Apply the trigonometric identity to obtain,

m₂ = tan (90° + θ)  = -cot θ

Now, m₁ × m₂ = tan θ × -cot θ = -1

Thus, the products of slopes is -1.

Hence, the product of slopes of two perpendicular lines is -1.

To know more about slope click on,

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what is the answer to
4 over x = 5 over 9

Answers

Answer:

Step-by-step explanation:

Answer:

x = 36/5, x = 7 1/5, x = 7.2

Step-by-step explanation:

4/x = 5/9

36 = 5x

5x = 36

divide both sides by 5

x = 36/5.

Fill in the blanks! Help please this is due at 11:59

Answers

Answer:

1) intensive

2) squemish

3) selfish

4) injection

5) combatiive

6) reject

7) interjection

8) eject

9) impressive

10) projected

Not sure about some of these but hope this can help!!

Step-by-step explanation:

Answer:

1. intensive

2. squmish

3. selfish

4. injection

5. combative

6. reject

7. interjection

8. eject

9. impressive

10. projected

Step-by-step explanation:

LOL PLS HELP ME WITH THIS AND EXPLAIN IT , BRIANLY POINTS TO WHOEVER DOES!

Answers

Answer:

french, history, math

Step-by-step explanation:

Reasoning:

If you look at it you can see that french is 11/12 so french is definitely right

so you can eliminate the third question.

Now history is on both of the two answers that could be right.

the last one is math

pls brainliest

ts
Identify as many solutions to the equation below as you can.
x + y = 12
(ex. 1 + 11 = 12, so (1, 11) is a solution)

Answers

Answer:

2+10=12

3+9=12

4+8=12

5+7=12

6+6=12

What is the value of y if 525=y5?

Answers

Answer:I think its 105

Step-by-step explanation:  525=y5 ... you divide by 5 on both sides and 525 divided by 5 equals 105. So then you bring then y down and y=105.

I don't remember how to solve this problem I missed yesterday when we learned it. 4(x-2+y)

Answers

Answer:

4x - 8 + 4y

Step-by-step explanation:

4(x - 2 + y)

4x - 8 + 4y

You multiply each term in the parenthesis by the number in front of it.

Please help me! giving out brianliest!

Answers

Answer:

Hmm, remember to use distributive property with the fraction and the numbers in the parenthesis.

Step-by-step explanation:

I need help asap answer this please Solve for x.

Answers

Answer:

68

Step-by-step explanation:

x is 12


Step-by-step-explanation:

180-112=68

Then 6x-4=68
6x=72
x=12

PLEASE HELPPPP!!! Find the measure of angle A

Answers

Answer:  40

========================================================

Explanation:

The three angles of this triangle are

20x9026x-2

The square angle marker represents 90 degrees. It's also referred to as "a right angle".

As a rule, the three angles of any triangle always add to 180. Let's use this fact to solve for x

(angle1)+(angle2)+(angle3) = 180

(20x)+(90)+(26x-2) = 180

(20x+26x) + (90-2) = 180

46x+88 = 180

46x = 180 - 88 .... subtract 88 from both sides

46x = 92

x = 92/46 ........ divide both sides by 46

x = 2

Now that we know what x is, we can find angle A

angle A = 20x = 20*2 = 40 degrees

-------------

As extra info, we could also find the other angle with this x value

26x - 2 = 26*2 - 2 = 52 - 2 = 50 degrees

The three angles of the triangle are: 40, 50, 90 which add to 40+50+90 = 180. This helps confirm our answer.

help!! This assignment is due in one hour..
Find a function that describes the arithmetic sequence 16, 17, 18, 19, ... Use y to identify each term in the sequence and n to identify each term's position.

Answers

I think it’s y=n+15

The common difference is 1

16+1= 17 17+1=18 and so on

How do you write 3,390 in scientific notation?
x 10

Answers

Answer:

3.39 × [tex]10^{3}[/tex]  

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive. Since the decimal is going right, the exponent will be positive

solve the following using the quadratic formula
10x^2-7x+5=0
a)-0.96 and -0.26
b)0.96 and -0.26
c)no solution
b)0.96 and 0.26

Answers

c)no solution i’m pretty sure

What number is grater than 1 but less than 7

Answers

Answer:

5

ok

THIS IS SIMPLE

MARK AS BRAINLIST

What is the value of the expression below when x = -5 and y = -10
|3x - y| +4

Answers

Answer:

-1 is your answer for this mate

find x=, if x-12=24 now!?

Answers

Answer:

Answer is 36

Step-by-step explanation:

Trust me

Answer:

36 because 24 + 12 = 36

Explain whether or not a continuous function can be considered a sequence.

Answers

Answer:

A function is considered continuous when it has no drastic changes in the sequence  known as discontinuities. If not continuous, a function is said to be discontinuous.

5. Give an example of a possible answer that follows the form a=b
O 4-4 Infinitely many solutions
O x = 4 One solution
O 2 -4 No solution

Answers

It is c, 2 -4 no solution

3
Find the slope and y-intercept from the following graph of a linear equation.

Answers

Answer:

A. Slope = 4 and y-intercept  = 3

What is the length of the base of a right triangle with an area of 15 square meters and a height of 3 meters?
5 m
10 m
30 m
45 m

Answers

Answer:

10 m

Step-by-step explanation:

I did the test

Answer:

10m

Step-by-step explanation:

I did the test on k12 and it was correct !

find x PLEASE HELPPP RIGHT NOW

Answers

Answer:

the answer is 34 degrees

it will be x=180-146 degrees

Jane moved from a house with 66 square feet of closet space to an apartment with 37.62 square feet of closet space. What is the percentage decrease of Jane's closet space?

Answers

Answer:

Step-by-step explanation:

A town has a population of 12,000 and grows at 5% every year what will the population after 12 years be to the nearest whole number

Answers

Your answer will be 21,550 because of 12,000*1.7958563=21,550

I need help with this problem-1 1/5 + (-3/5)

Answers

Answer:

-1 4/5

Step-by-step explanation:

m ≥ 15 graph the inequality

Answers

Since the sign is greater than or equal to, it’s a closed circle. I think that means it has a solution. Draw your number line than draw a circle on the 15th line. Make sure the circle is shaded in. Then draw a n arrow a cross the number line, pointing to the right because this equation is say the variable m is greater than or equal to 15

One hundred forty-four of the 180 seventh-grade students attended the school dance last Saturday night. What percentage of seventh-grade students did NOT attend the dance?

Answers

Answer:

20%

Step-by-step explanation:

Because 144 OUT OF the 180 seventh grade students attended, this would represent 144/180.

But since we are trying to solve how many did NOT attend the dance, you must subtract 144 from 180 which equals 36. So 36/180 did not attend the dance.

But to make it a percentage, you divide 36/180. Fraction and percentage are like buddies! That's why it is very simple to make a fraction into a percentage.

36/180 can be simplified to 1/5, which as a decimal, is 0.20.

0.20 is same as 20%, so this should be the students that did not attend the dance.

I hope this helps. If this is wrong, I truly apologize...

Answer:20

Step-by-step explanation:

20

Can someone help me with these questions immediately? Thank you!

Answers

Answer:

35

................................................

a table was listed $400 after discount.And the net price was $450.what is the rate discount and marked price?​

Answers

Answer:

Your answer

Discount rate = 11.11%

Mark it as Brainlist. Follow me for more answer.

Step-by-step explanation:

need help please asap​

Answers

A) 86m
B)58in
C)69ft
D)37cm

Does the equation represent a linear or nonlinear function? Explain.

y = x + 5

Answers

Answer:

Below.

Step-by-step explanation:

A linear function contains a variable of the first  degree  only - for example f(x) = 2x - 1 or f(z) = 3z.

So y = x + 5 is linear.

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