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Semenov [28]
3 years ago
7

What do I do I don’t know the answer

Mathematics
1 answer:
tatuchka [14]3 years ago
4 0

Answer:

B) 114.511m^3

Step-by-step explanation:

Formula of a cylinder is πr^2 x h

r = radius (half of diameter)

h = height

Since it is 3/4 full you only do 3/4 of the height so- 0.75 x 9.60 which equals <em>7.2</em>

Half of the diameter is 2.25. 2.25^2 =<em> 5.0625.</em>

The volume of the cylinder = <em>5.0625π x 7.2</em>

By solving this, you will get approximately <em>114.511 m^3</em> as your answer.

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Answer:

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3 years ago
Factor completely 2x^2 − 2x − 40.
zubka84 [21]

Step-by-step explanation:

Hey there!

Given;

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<u>= 2 {x}^{2}  - 2x - 40</u>

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<u>2x(x - 5) + 8(x - 5)</u>

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How can you use the distributive property to check your work when factoring?
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4 years ago
Read 2 more answers
Urgent help!
Alchen [17]

Answer:

(i) 80-x

(ii) S(x) = 40 - 0.10x

(iii) $36.5

Step-by-step explanation:

Given that:

1. Total Number of fruits = 80

2. Number of mangoes = x

3. Both mangoes and oranges are there in the basket.

Solution (i):

Only mangoes and oranges are there in the basket and the basket is full.

so, Number of mangoes + Number of oranges = Total number of fruits

x + Number of oranges = 80

Number of oranges = 80 -x

Solution (ii):

<u>Given:</u>

Cost of an orange = 50 cents = $0.50

Cost of a mango = 40 cents = $0.40

Cost for x mangoes = \$ 0.40x

Cost for (80-x) oranges = \$ 0.50 \times (80-x)

\Rightarrow S(x) = 0.50 (80-x) + 0.40x\\\Rightarrow S(x) = 40 -0.50x + 0.40x\\\Rightarrow S(x) = 40 - 0.10x

Solution (iii):

Put value of x = 35 in S(x)

S(35) = 40 - 0.10 (35)\\\Rightarrow S(35) = 40 - 0.35\\\Rightarrow S(35) =\$ 36.5

Hence, answers are:

(i) 80-x

(ii) S(x) = 40 - 0.10x

(iii) $36.5

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3 years ago
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For Y=2x+10 X=y/2 -5. Second x/3
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