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3 years ago

HOMEWORK HELP ME PLEASE

Mathematics

2 answers:

DanielleElmas [232]3 years ago

5 0

Answer:

Y = 3

Step-by-step explanation:

lutik1710 [3]3 years ago

3 0

The correct answer is B) y=3

Have a wonderful day :D

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A pentagon has angle measures of 12x°, 7x°, 16x°, 9xº, and 10x°. Find the<br> value of x.

Musya8 [376]

Answer:

Step-by-step explanation:

one interior angle in a pentagon is 108^o.

5 interior angles are 540^o.

If we add 12+7+16+9+10, we get 54x=540^o

That means x=10

3 0

3 years ago

Please give answer of 6 number

Irina18 [472]

Answer:

$7,500$

Step-by-step explanation:

Let's solve this problem step-by-step. The library had 1,500 books in 2011. The ratio of books in 2011 and in 2012 is 1:2. Therefore, let the number of books in 2012 be $x$ .

We have the following proportion:

$\frac{1}{1,500}=\frac{2}{x},\\x=2\cdot 1,500=3,000$

Therefore, there were 3,000 books in 2012. The ratio of books in 2012 and in 2013 is 2:5. Let the number of books in 2013 be $y$ .

We have:

$\frac{2}{3,000}=\frac{5}{y},\\2y=5\cdot 3,000,\\2y=15,000\\y=\boxed{7,500}$

Therefore, there were 7,500 books in 2013.

8 0

3 years ago

Read 2 more answers

What is the sum of the interior angle Measures of an 11 - gin

creativ13 [48]

$\bf \textit{sum of all interior angles in a polygon}\\\\
S=180(n-2)\quad 
\begin{cases}
n=\textit{number of sides}\\
----------\\
n=\stackrel{11-gon}{11}
\end{cases}\implies S=180(11-2)$

and surely you know how much that is.

6 0

3 years ago

Enter the equation of the circle described below.<br> Center (-3,0), radius = sqrt5

Marianna [84]

Answer: $(x+3)^{2}+y^{2}=5$

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2 years ago

Determine the direction that this parabola opens y=4x^2+8x+2

just olya [345]

For this case we have a quadratic equation of the form:
$ax ^ 2 + bx + c
$
What we must keep in mind to know which direction opens the parabola, is the value of a.
We have two options:
If a <0 the parabola opens down
If a> 0 the parabola opens up
We have the following equation:
$y = 4x ^ 2 + 8x + 2
$
We observed that:
$a = 4 (a\ \textgreater \ 0)
$
Therefore, the parable opens up.
Answer:
the direction that this parabola opens is:
Upwards

8 0

3 years ago