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3 years ago

The circumference of a circle measures 15.7 centimeters. What is the measure of its diameter?

Mathematics

2 answers:

SVETLANKA909090 [29]3 years ago

8 0

A. 12 cm

there you go

IceJOKER [234]3 years ago

4 0

Answer:

Step-by-step explanation:

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Point A(-7, 5) is reflected over x-axis.

valentinak56 [21]

I think the answer is option D hope it helps :)

4 0

3 years ago

iren2701 [21]

Answer:

Step-by-step explanation:

Given:

A. $2x^3-x^{2} -6x$

B. $2x^3+8x+4$

C. $3x^4+x^{2} +x-7$

D. $3x^4-3x^{2} +5x-7$

Now, let us evaluate the given expressions one by one.

$(4x^3-4+ 7x)-(2x^3-x-8)\\\Rightarrow 4x^3-4+ 7x-2x^3+x+8\\\Rightarrow 2x^3+8x+ 4$

It is equation B.

So, $(4x^3-4+ 7x)-(2x^3-x-8)$ is equivalent to B.

$(-3x^2+x^4+x)+(2x^4-7+4x)\\\Rightarrow -3x^2+x^4+x+2x^4-7+4x\\\Rightarrow3x^4-3x^{2} +5x-7$

It is equation D.

So, $(-3x^2+x^4+x)+(2x^4-7+4x)$ is equivalent to D.

$(x^{2} -2x)(2x+3)\\\Rightarrow 2x^3-4x^{2} +3x^{2} -6x\\\Rightarrow 2x^3-x^{2} -6x$

It is equation A.

So, $(x^{2} -2x)(2x+3)$ is equivalent to A.

So, answer is:

8 0

3 years ago

Marjorie got a total 239 points on three tests. The combined scores on the scores on the second two tests were 59 more than the

Dima020 [189]

Answer:

Option a is the correct answer.

Step-by-step explanation:

Let x,y and z represent the marks scored in first,second and third tests respectively.

Total score is 239, then:

x+y+z = 239 -------1

Combined scores of first and second tests is 59 more than that of third test,then:

x+y = 59+z

x+y-z = 59 ---------2

The score of second test is 25 more than that of third test, then:

y = 25+z

0x+y-z = 25 --------3

The matrix equation for this situation is:

$\left[\begin{array}{ccc}1&1&1\\1&1&-1\\0&1&-1\end{array}\right]$ $\left[\begin{array}{c}x&y&z\end{array}\right]=$ $\left[\begin{array}{c}239&59&25\end{array}\right]$ .

4 0

3 years ago

3-1/3 to the 4 power

Stolb23 [73]

Answer:

your answer is 0.197530

I HOPE IT WILL HELP YOU.

3-1 / 3

= 2/3

=2/3 power 4

= 0.197530

5 0

3 years ago

Lines b and c are parallel. no links.

stepan [7]

Answer:

Value of x:

${ \tt{(13x + 9) + (5x + 9) = 180 \degree}} \\ { \tt{18x + 18 = 180 }} \\ { \tt{18x = 162}} \\ { \tt{x = 9}} \\$

Angle m‹6:

${ \boxed{ \tt{m \angle6 = (5x + 9) \degree}}} \\ { \tt{m \angle6 = (5 \times 9) + 9}} \\ { \tt{m \angle6 = 54 \degree}}$

4 0

3 years ago

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