1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Greeley [361]
3 years ago
5

Only brilliant can solve

Mathematics
1 answer:
yawa3891 [41]3 years ago
5 0
Volume of the cone = 1/3 pi * 3^2 * 4 =  12pi
Volume of the hemisphere = 4/3 pi 3^3 * 1/2 =  18pi
So the volume of the toy =  12pi + 18pi = 30pi = 94.25 cm^3 to nearest hundredth Answer

Surface area of hemisphere = 1/2 * 4 pi 3^2 =  18pi
Lateral Surface area of the cone =  pi r l where l = slant height of the cone
Now l=  sqrt ( 4^2 + 3^2)  = sqrt25 = 5
So lateral S A = 3 * 5 * pi = 15pi

Surface area of the toy = 18pi + 15pi = 33pi = 103.67 cm^2 ( nearest hundredth)   Answer
You might be interested in
HELP ASAP: Factor By Grouping: 12a^3 - 9a^2 + 4a - 3
MAVERICK [17]

We have been given an expression 12a^3 - 9a^2 + 4a - 3. We are asked to factor the given expression by grouping.

First of all, we will make two groups of our expression as:

(12a^3-9a^2)+( 4a - 3)

Now we will factor of greatest common factor from each group.

(3a^2\cdot 4a-3a^2\cdot 3)+( 4a - 3)

3a^2(4a-3)+1( 4a-3)

Now we will factor out common terms (4a-3) as:

(4a-3)( 3a^2+1)

Therefore, the factorized form of our given expression would be (4a-3)( 3a^2+1).

7 0
3 years ago
Complete each trinomial such that it can be rewritten in the form a(x+b)^2 or a(x-b)^2
scoundrel [369]

The value of the expression  in the form a(x+b)^2 is 1.5(x+2)^2 - 4

<h3>Vertex Form of a quadratic expression</h3>

Given the quadratic expressions

1.5x^2+6x+......

1.5(x^2 + 4x)

Using the completing the square method

The coefficient of x = 4

Half of the coefficient = 4/2 = 2

The square of the result = 2^2 = 4

The equation is expressed as:

f(x) = 1.5(x^2+4x+ 4) - 4

f(x) = 1.5(x+2)^2 - 4

Hence the value of the expression  in the form a(x+b)^2 is 1.5(x+2)^2 - 4

Learn more on completing the square method here: brainly.com/question/1596209

6 0
2 years ago
the direction angle for vectors 135° the X component of the vector is -3 what is the Ywhat is what what is the Y component of th
blagie [28]
Well, the X component (assuming x is the horizontal) is equal to RCosZ

Where Z is the angle and R is the size of the resultant

Substitute into formula :

X component = RcosZ
-3 = Rcos135°
R = -3/cos135°
R = 4.24264...
R = 4.24 (2dp)

The vertical component (or Y component) is equal to RSinZ

Vertical component = RSinZ
= 4.24264... × Sin135°
= 3

The answer is 3

Please feel free to ask any questions you have
3 0
3 years ago
The choir sells tickets to its performances for an assortment of prices and gives some tickets away. The choir
galina1969 [7]

The least square regression equation for the information provided is y = 9.72x - 40.776

<u>The general equation of a regression model can be expressed thus</u>:

  • y = bx + c

  • Slope, b = r(Sy/Sx)

Calculating slope, b :

  • b = 0.81(177.6 / 14.8) = 9.72

<u>Plugging the values of b, y and x into the equation in other to calculate c</u> :

696 = 9.72(75.8) + c

696 = 736.776 + c

c = 696 - 736.776

c = - 40.776

Therefore, the linear regression model can be expressed as : y = 9.72x - 40.776

Learn more :brainly.com/question/18405415

3 0
2 years ago
What is the amplitude of the sinusoids function m(x)= -3.5 cos x
leva [86]

Answer:

The amplitude  of the given sinusoidal function is 3.5

Step-by-step explanation:

The given sinusoidal function is

m(x)=-3.5\cos x

This function is of the form:

m(x)=a\cos bx

where

a=|-3.5|=3.5 is the amplitude.

Therefore the amplitude of the given sinusoidal function is 3.5

6 0
3 years ago
Other questions:
  • Suki rode her bike 4/5 mile. Claire rode her bike 1/3 mile. they want to compare how far they each rode their bikes using the Be
    8·1 answer
  • Please provide an explanation. Simplify sqrt242
    10·2 answers
  • Graph the equations to solve the system<br><br> y= x+4<br> y= -x-6
    12·1 answer
  • Hugo has $20. he spends n dollars.How much does he have left?​
    12·2 answers
  • I REALLY NEED HELP NON THIS
    7·2 answers
  • Abc daycare wants to build a fence to enclose a rectangular playground. the area of the playground is 930 square feet. the fence
    5·1 answer
  • Please see attached question. Need correct answers. Thank you
    7·1 answer
  • What percent of 50 is 112
    11·1 answer
  • Which is greater 6.0 or 0.6
    11·2 answers
  • Given f(x)=5x-4, solve for x when f(x)=1
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!