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olasank [31]
3 years ago
7

Evaluate. Please help me!!!

Mathematics
1 answer:
Mademuasel [1]3 years ago
5 0

Answer:

670

Step-by-step explanation:

(3*1+2)+(3*2+2)+........(3*20+2)=670

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HELPP will give Brainlyest answer!!!
nika2105 [10]

Answer:

Step-by-step explanation:

here you go!!

3 0
3 years ago
A punch recipe calls for cups of 1 2/3 orange juice,3/4 cup of pineapple juice, and 1 1/2 cups of mango juice. How many total cu
KengaRu [80]
First turn the whole numbers into mixed fractions:
1 1/2
multiply the whole number by the denominator then add it to the numerator which will make 3/2
doing the same thing on 1 2/3, you get 5/3
finding the LCM of 5/3, 3/2 and 3/4, you get 12
multiplying 4/4 to 5/3, you get 20/12
multiplying 6/6 to 3/2, you get 18/12
multiplying 3/3 to 3/4, you get 9/12
now you can add them easily and you get 47/20
turning that into a whole fraction, you get 2 7/20
8 0
3 years ago
What are the answer
TiliK225 [7]

Answer:

1)556.11 cm²

2)164.05 cm²

3)117.70 cm²

Step-by-step explanation:

1) We have a cylinder and a cone on top of it.

Formula for total surface area of cylinder is;

T.S.A = 2πrh + 2πr²

However, the top is not available for calculation here. Thus, we will use;

TSA = 2πrh + πr²

Thus;

TSA = 2π(5 × 12) + π(5)²

TSA = 455.53 cm²

The top is a cone but it's bottom is not included and so we will use lateral surface area of cone = πrL

L is the slanting height and can be calculated from pythagoras theorem ;

L = √(5² + 4²)

L = √41

Thus;

LSA = π × 5 × √41 = 100.58 cm²

Overall surface area = 455.53 + 100.58. Overall surface area = 556.11 cm²

2) for the box down;

TSA = 2lw + 2lh + 2hw

Since the top face is not used, then

TSA = lw + 2lh + 2hw

TSA = (5 × 5) + 2(5 × 5) + 2(5 × 5)

TSA = 125 cm²

For the prism on top, since the bottom is not included, we will use lateral surface are;. LSA = ½Pl

Where P is perimeter of base and L is slant height.

P = 5 × 4 = 20 cm

Radius is 5/2 = 2.5 and so using pythagoras theorem;

L = √(2.5² + 3²)

L = 3.905 cm

Thus;

LSA = ½ × 20 × 3.905 = 39.05 cm²

Overall surface area = 39.05 + 125 = 164.05 cm²

C) for the box down;

TSA = 2lw + 2lh + 2hw

Since the top face is not used, then

TSA = lw + 2lh + 2hw

TSA = (4 × 4) + 2(4 × 4) + 2(4 × 4)

TSA = 80 cm²

For the half cylinder on top;

Surface area ;

T.S.A = 2πrh + 2πr²

Since half cylinder;

TSA = πrh + πr²

TSA = π((2 × 4) + 2²))

TSA = 37.7 cm²

Overall total surface area = 80 + 37.7 ( 117.70 cm²

3 0
2 years ago
Make d the subject h=d/3+2
Alexandra [31]

Answer:

d = 3h - 6

Step-by-step explanation:

<u>Step 1:  Solve for d</u>

I am assuming that you are asking for me to solve for the variable d.  Let me know if what I am doing is not what you want.

h = \frac{d}{3} + 2

h - 2 = \frac{d}{3} + 2 - 2

(h - 2) * 3 = \frac{d}{3} * 3

3h - 6 = d

Answer:  d = 3h - 6

3 0
3 years ago
Can somebody please help ASAP
MrMuchimi

Answer:

Step-by-step explanation: if u need helo go to DBHELPPOT on yiutubs

5 0
3 years ago
Read 2 more answers
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