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Assoli18 [71]
2 years ago
15

Need help with this dividing whole numbers thing

Mathematics
1 answer:
Dvinal [7]2 years ago
8 0

Answer:

72 : n = 18. n x 18 = 72

n : 18 = 72. 72 x 18 = n

72 : 18 = n

Step-by-step explanation:

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The sum of 4 consecutive odd numbers is 40.<br> What is the second number in this sequence?
EleoNora [17]

Answer:

The answer is 9.

Step-by-step explanation:

Because 7 + 9 + 11 + 13 = 40, 9 is the 2nd number in the problem.

7 0
3 years ago
What is the surface area of the composite figure? Round to the nearest tenth.
alexandr402 [8]

Answer:

2855.0

Step-by-step explanation:

there are several surface areas.

1. outside surface of the cylinder = circle circumference times height = 2*pi*r*height = 2*pi*14*14 = 1231.5

2. top and bottom of the cylinder = circle area times 2 = pi*r^2 * 2 = pi*14^2 *2 = also 1231.5

3. subtract the 2 cut out rectangles on the top and the bottom = 2* 6*14 = 168

4. add the areas of the inside walls of the cut out block.

there are 2 narrow rectangles = 2* 6*14 = 168

there are 2 squares = 2* 14*14 = 392

so, 1.+2.-3.+4. = 2855.0 (2855.00864...)

5 0
3 years ago
What is the reciprocal of -2 3/8
Juliette [100K]
So the answer is 8/19
7 0
3 years ago
Read 2 more answers
Which of the following are polynomials and which are not polynomials?
tresset_1 [31]

Answer:

only (2) and (4) are polynomial out of given options.

Step-by-step explanation:

Polynomial  is an expression having  variables having positive integer exponents with real constant coefficients. example 2x^2+3x+4

We are given some polynomials and we have to choose whether are polynomial or not.

Consider ,

1) x^{\frac{2}{7}}+1

Since, Polynomial does not have a fractional exponent.

So, 1) Not a polynomial.

2) -2x^3+2x+4

Since all of the variables have integer exponents that are positive this is a polynomial.

3) x^{-3}+4x

Not a polynomial because a term has a negative exponent .

4) 6x-x^3+4x^2

Since all of the variables have integer exponents that are positive this is a polynomial.

Thus, only (2) and (4) are polynomial out of given options.




3 0
3 years ago
2y2(35 – 4y) in standard form
Alex73 [517]

Step-by-step explanation:

2 {y}^{2} (35 - 4y) \\  = 2 {y}^{2}  \times 35 - 2 {y}^{2}  \times 4y \\  = 70 {y}^{2}  - 8 {y}^{3}  \\  = \red { \bold{ - 8 {y}^{3} + 70 {y}^{2} }} \\ is \: in \: the \: standard \: form.

8 0
3 years ago
Read 2 more answers
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