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ioda
3 years ago
7

Please Help me with this maths question

Mathematics
1 answer:
nikdorinn [45]3 years ago
4 0

Step-by-step explanation:

formula to find volume of a cylinder => V= πr²h

(22/7×(3.5)²×12)cm³

462cm³.

now the total volume of plastic used is = 462×0.2 = 92.4cm³.

hope this helps you.

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20 POINTS!!
sveta [45]

Answer: The answer is 40 degrees


Step-by-step explanation: Angles CDE and ABC are congruent and the sum of the other angles together is 140 degrees. Since all triangles add up to 180 degrees 40 degrees is left.


3 0
4 years ago
Read 2 more answers
Simplify the expression -6(3x-4)
Agata [3.3K]

Answer:

-18x + 36 for the -6(3x-4) and 12x - 20 for the one on the image.

Step-by-step explanation:

You have 2 questions so I'll answer both of them (One written and the image as well)

-6 (3x-4)

You need to multiply -6 by 3x and -4

-18x + 36 Is the simplified version

**Remember that when multiplying two negatives they turn into a positive.

-2x (-6 + 10)

You need to multiply -2x by -6 and 10

12x - 20

8 0
2 years ago
Which statements are correct about the two-way frequency table? check all that apply.
Rina8888 [55]

The table displays the quantitative data, two teachers do not wear glasses, and a total of 6 teachers were polled. Then the correct option is A, C, and E.

<h3>What is decision-making?</h3>

The process of making choice is by identifying the correct decision, gathering information, and assessing alternative solutions.

The table is shown below.

                        Wear glasses      Don't wear glasses      Total

Student                  32                              97                       129

Teacher                   4                                2                          6

Total                       36                              99                       135

The table displays the quantitative data.

Two teachers do not wear glasses.

A total of 6 teachers were polled.

More about the decision-making link is given below.

brainly.com/question/3369578

4 0
2 years ago
The graph of a system of linear equations shows 2 lines with different slopes.
pochemuha

they are the same lines

x and y are the same

Step-by-step explanation:

i dont know for sure so bye god bless

4 0
3 years ago
Ex 2.8<br> 3. find the maximum value of y for the curve y=x^5 -3 for -2≤x≤1
harkovskaia [24]
y=x^5-3\\ y'=5x^4\\\\ 5x^4=0\\ x=0\\ 0\in [-2,1]\\\\ y''=20x^3\\\\&#10;y''(0)=20\cdot0^3=0

The value of the second derivative for x=0 is neither positive nor negative, so you can't tell whether this point is a minimum or a maximum. You need to check the values of the first derivative around the point.
But the value of 5x^4 is always positive for x\in\mathbb{R}\setminus \{0\}. That means at x=0 there's neither minimum nor maximum.
The maximum must be then at either of the endpoints of the interval [-2,1].
The function y is increasing in its entire domain, so the maximum value is at the right endpoint of the interval.

y_{max}=y(1)=1^5-3=-2
4 0
3 years ago
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