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3 years ago

PLEASE HELP ME, I WILL GIVE BRAINLIEST (I WILL GIVE 50 POINTS)

Mathematics

2 answers:

DiKsa [7]3 years ago

6 0

Answer:

Step-by-step explanation:

$B.\\\left(8\dfrac{4}{5}+3\dfrac{2}{10}\right)+\left(-1\dfrac{1}{5}\right)=8\dfrac{4}{5}+\left(3\dfrac{2}{10}+\left(-1\dfrac{1}{5}\right)\right)=8\dfrac{4}{5}+\left(3\dfrac{2}{10}-1\dfrac{1}{5}\right)$

$D.\\8\dfrac{4}{5}+3\dfrac{2}{10}-1\dfrac{1}{5}=8\dfrac{4}{5}+\left(3\dfrac{2}{10}-1\dfrac{1}{5}\right)$

$E.\\-\left(-8\dfrac{4}{5}\right)-\left(-3\dfrac{2}{10}\right)+\left(-1\dfrac{1}{5}\right)=8\dfrac{4}{5}+3\dfrac{2}{10}-1\dfrac{1}{5}=8\dfrac{4}{5}+\left(3\dfrac{2}{10}-1\dfrac{1}{5}\right)$

Used:

Associative property

$(a+b)+c=a+(b+c)=a+b+c$

and

$(-)(-)\to(+)\\(-)(+)\to(-)\\(+)(-)\to(-)$

Evgesh-ka [11]3 years ago

6 0

Answer: D

<h3>Step-by-step explanation: The answer is D. It's pretty straight forward. Compare the two answers and you will see that D is equivalent to that equation.</h3>

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Help! I’ll mark you brainly and give extra points!!

bezimeni [28]

Answer: 4. No, the graph is NOT a function because using the vertical line test, it intersects at two points at a time.

5. Yes, it is a relation, and it is also a function because once those points are plotted if given the vertical line test, there would not be two points crossed at once. So, yes, it is a function.

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3 years ago

The vertex of a quadratic function is (6, 2), and the y-intercept of the function is (0, −70). The equation of the function in v

dimaraw [331]

Answer:

The equation of the function in vertex form is represented by $y = -2\cdot (x-6)^{2}+2$ .

Step-by-step explanation:

Let $(h,k) = (6,2)$ and $(x,y) = (0, - 70)$ , now we substitute on the equation of the quadratic function and solve for $a$ :

$y = a\cdot (x-h)^{2}+k$

$-70 = a\cdot (0-6)^{2}+2$

$-70 = 36\cdot a + 2$

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$a = -2$

Therefore, the equation of the function in vertex form is represented by $y = -2\cdot (x-6)^{2}+2$ .

8 0

3 years ago

Read 2 more answers

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xeze [42]

Answer:

The volume of this rectangular prism is 225 sqaure centimeters.

Step-by-step explanation:

The formula for finding volume is V = length * width * height

Substitute values in the formula:

5 * 15 * 3 = V

5 * 15 * 3 = 225

Hope this helps; have a great day!

3 0

3 years ago

What is the distance between the points (2,-3) and (-6,4) on the coordinate plane?

gulaghasi [49]

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{2}~,~\stackrel{y_1}{-3})\qquad (\stackrel{x_2}{-6}~,~\stackrel{y_2}{4})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{[-6-2]^2+[4-(-3)]^2}\implies d=\sqrt{(-6-2)^2+(4+3)^2} \\\\\\ d=\sqrt{64+49}\implies d=\sqrt{113}\implies d\approx 10.63$