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
Setler [38]
3 years ago
10

Help I’m struggling !

Mathematics
2 answers:
aivan3 [116]3 years ago
8 0
I think the answer is 14
kap26 [50]3 years ago
7 0

Just plug in b =2 into 7+b

So 7 + 2 = 9

You might be interested in
What is the equation of the line that is perpendicular to f(x) and passes through the point (4, –6)? a.4x + 3y = –2 b. 3x + 4y =
user100 [1]

Answer:

8

Step-by-step explanation: because its even

4 0
3 years ago
Please help me!!!! Help me find the dimensions. :(
Gnom [1K]
The volume, surface area and the ratios of the SA to volume will be as follows:
Volume=πr²h
Area=2πr²+πdh
Ratio of SA to volume=Area/volume
π=3.14
Thus using the above formula:

1.
a]
Radius: 3 inches
Height: 2 inches
Volume=πr²h
volume=π×3²×2=56.52 in³

b]
Area=2πr²+πdh
2×π×3²+π×2×3×2
=56.55+37.68
=94.23 in²

c]
Ratio=area/volume
=94.23/56.52
=1.6672


1. 
Radius: 2 inches
Height: 9 inches

a]
V=πr²h
V=3.14*2^2*9
V=113.04 in³

b] 
Area=2πr²+πdh
=2*3.14*2^2+3.14*2*2*9
=25.12+113.04
=138.16 in²

c]
Ratio=area/volume
=138.16/113.04
=11/9

3.
Diameter=4 inches
Height= 9 inches

a]
V=πr²h
V=3.14×2²×9
V=113.04

b]
Area=2πr²+πdh
=2*3.14*2^2+3.14*4*9
=25.12+113.04
=138.16 in²

c]
Ratio=area/volume
=138.16/113.04
=11/9

4]
Diameter: 6 inches
Height: 4 inches

a]
Volume=πr²h
=3.14×3²×4
=113.04 in³

b]
Area=2πr²+πdh
=2×3.14×3²+3.14×6×4
=56.52+75.36
=131.88 in²

c] Ratio
131.88/113.04
=7/6

1. For the surface area to volume to be small it means that the area is smaller than the volume, for surface area to volume  be larger it means that the surface area is larger than the volume. It is more economical for the surface area to volume to be small because it will mean that small amount of materials make cans with large volume. This means cost of production is cheaper.

2. To evaluate this process let's use one of the dimensions:
Radius: 3 inches
Height: 2 inches:

i. add radius and height:
3+2=5 inches
ii. Multiply radius and height:
3×2=6
iii. Dividing the result from step 1 by the result in step 2:
5/6

iv. Multiply the result from step 3 by 2:
5/6×6
=5
This result does not seem to add up to the result in our earlier ratio. Thus we conclude that Khianna was wrong. This method can't work with 3-D figures.


7 0
3 years ago
Solve for x.<br> (x - 3)^2 -10 = 15
Brut [27]

Answer:

Step-by-step explanation:

Let's go:

(x - 3)^2 - 10 = 15 \\\ (x - 3)^2 = 15 + 10 \\\ (x - 3)^2 = 25 \\\ x - 3 = \sqrt{25} \\\ x - 3 = \pm 5

Solution #1:

x - 3 = 5

x = 5 + 3

x = 8

Solution #2:

x - 3 = - 5

x = - 5 + 3

x = - 2

I hope I helped you.

3 0
2 years ago
10 skeins of yarn will make for scars how many scarves can be made with 25 skeins of yarn
zhannawk [14.2K]

Answer:

Step-by-step explanation:

Ten divided by four is 2.5 so you can make obe a rave with 2.5 skeins 2.5*10=25 so you can make ten scarves

4 0
2 years ago
Kelly and Adam are buying boxes filled with candy to give to friends. Kelly chooses a cone-shaped box that has radius x. Adam ch
kondaur [170]

Kelly and Adam are buying candy boxes to give to friends

Step-by-step explanation:

Kelly statement is true.

1. Kelly buy a candy box which is cone -shaped with radius x.

2.Adam buy a candy box which is square pyramid shape with same height as Kelly's box but the side length is xπ√.

3.Two candy boxes have different in shape so volumes of the boxes will be different.

6 0
2 years ago
Other questions:
  • PLEASE HELP IM STUCK ON THIS QUESTION
    5·1 answer
  • Which coordinate plane shows the graph of f(x)=-2+3
    8·1 answer
  • Write and solve a system of equations for this question please
    8·1 answer
  • FOR THE FUNCTION F(X) =6x - 8 what is f(3)?
    11·2 answers
  • Explain how additive inverses are used in subtraction
    15·1 answer
  • Is the sequence {an} bounded above by a number? If yes, what number? Enter a number or enter DNE. Is the sequence {an} bounded b
    13·1 answer
  • A triangular bandana has an area of 74 square inches. The height of the triangle is 9 1 4 inches. Enter and solve an equation to
    15·1 answer
  • Find the percent of each number.<br> 1. 32% of 60 =
    9·2 answers
  • Calculate the values of x and y.
    10·1 answer
  • Please Help me with the questions in the picture
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!