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
sdas [7]
3 years ago
10

Which student correctly translated the phrase "twice the sum of a number cubed and nine" and evaluated it for r = 3?

Mathematics
2 answers:
lesya692 [45]3 years ago
7 0

Answer:

2( {r}^{3}  + 9) \\ 2 ({3}^{3}  + 9) \\ 2(27 + 9) \\ 2 \times 36 \\  = 72 \\

Step-by-step explanation:

twice a sum

2(........)

twice a sum of a number cubed and nine

2( {x}^{3}  + 9)

evaluated for r =3

x =r = 3

so,

2( {r}^{3}  + 9) \\ 2 ({3}^{3}  + 9) \\ 2(27 + 9) \\ 2 \times 36 \\  = 72

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em>

<em>brainliest</em><em> </em><em>appreciated</em>

<em>good</em><em> </em><em>luck</em><em>!</em><em> </em><em>have</em><em> </em><em>a</em><em> </em><em>nice</em><em> </em><em>day</em><em>!</em>

stich3 [128]3 years ago
3 0

Answer:

<h2>The student who got 72, that's the right one.</h2>

Step-by-step explanation:

The given statement can be translated to

2(n^{3} +9)

Where n is the number.

Notice that "twice" is a general product that must cover the whole sum.

If n=3=r, then we solve

2(n^{3} +9)=2(3^{3}+9 )=2(27+9)=2(36)=72

Therefore, the student who got 72, that's the right one.

You might be interested in
Energy is required in order to produce any sound.<br><br> A. True<br> B. False
Vikki [24]

Answer: a. True

Step-by-step explanation:

7 0
3 years ago
If you need carpet that is 6 1/2 long and 5 3/4 wide how many square feet do you need for the carpet??
Orlov [11]

Find the area

A= l*w

A = (6 1/2) * (5 3/4)

6 1/2 =  (2*6+1)/2 =13/2

5 3/4 = (4*5+3)/4 = 23/4

A = 13/2 * 23/4

299/8

37 3/8

37 3/8 ft^2

Answer: 37  3/8 ft^2

6 0
3 years ago
Danny has 1.08 pounds of cat food. he uses 0.12 pound of cat food to feed one cat. how many cats can danny feed with the cat foo
Ede4ka [16]

Answer:

9

Step-by-step explanation:

1.08 divided by 0.12 equals 9

6 0
2 years ago
During a 12-hour period,the temperature dropped 48 F.How many degrees did the temperature drop each hour?
Alexxandr [17]

The temperature dropped 4 degrees each hour

5 0
3 years ago
Consider the given function.
Misha Larkins [42]

Answer:

x -intercepts are x = -3 and x = 1

y-intercept at y = -3

The line of symmetry is x = -1

vertex is (h,k) = (-1,-4)


Step-by-step explanation:

Given a quadratic equations: h(x) = (x + 1)^2 - 4

The vertex for is :

h(x) = a(x - h)² + k 

where,'h' is the axis of symmetry and (h,k) is the vertex.

So from the given equation we will rewrite the equation as:

h(x) = (x - (-1))^2 - 4

Hence,h = -1 and k = -4

The line of symmetry is x = -1 and vertex is (h,k) = (-1,-4)

Now, we have to find the x intercepts,

using the equation,

(x + 1)² = 4

Taking the square root on both sides,

√(x + 1)² = √4

x + 1 = ± 2

x = 1 or x = -3

So x -intercepts are x = -3 and x = 1

For y-intercept put x = 0 into the real equation:

h(x) = (0 +1)^2 - 4

y = 1 - 4

y = -3

So y-intercept at y = -3

Here with I have attached the graph.

Thank you.

5 0
3 years ago
Read 2 more answers
Other questions:
  • A football player tosses the ball through the air to a teammate. Could the path of the ball be described by the equation y = 0.5
    15·1 answer
  • Which function is a quadratic function? F(x) =2x^2, g(x) =5x^3,k(x)=-x,b(x)=-9x^4
    15·1 answer
  • In the textile industry, a manufacturer is interested in the number of blemishes or flaws occurring every 100 feet of material.
    6·1 answer
  • Geometry help ASAP<br> 15 points<br> Need help to find A and B
    14·1 answer
  • explain why a graph that fails the vertical-line test does not represent a function. Be sure to use the definition of a function
    6·2 answers
  • What are the coefficients in this expression? 2x +9y+(-4) Select all that apply.
    8·2 answers
  • What property was used on 14k + 2 (3k+5) -5 = 10 to obtain 14k + 6k +10 - 5 =10
    11·2 answers
  • What is the range of the function graphed below? ​
    5·1 answer
  • 3 cm 7 cm 4 cm 8 cm area​
    9·1 answer
  • Find the miing value in the ratio table. Then write the equivalent ratio. Plum 14 42 Grape 7 3 24 The equivalent ratio are 14 :
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!