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2 years ago

I need help with Function Operations

Mathematics

1 answer:

natita [175]2 years ago

7 0

Answer: 189

All Steps and Information Found in Image.

Hope This Helped!

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Find the missing side c in right triangle ΔABC, where a = 5 cm, b = 12 cm, and c is the hypotenuse of the right triangle.

mr_godi [17]

13cm because c is the hypotenuse .with formulae right angle triangle of 5^2+12^2=13

7 0

3 years ago

The data show the number of viewers for television stars with certain salaries. Find the regression equation, letting salary be

larisa86 [58]

Answer:

y = 5.064 - 0.010x

Here, in this question x = 33

y = 4.734 million views

In this question data is missing and I filled it out and calculated the questions accordingly. Please refer to the attachment for the data calculated.

Step-by-step explanation:

First of all, this question is incomplete. It lacks the data needed to calculate the required things.

So, I figured out the question and I will try my best to solve the question at hand.

I have calculated the some data sheet in excel. Please refer to the attachment for that data.

let a be the salaries

b be the viewers

$S_{aa}$ = ∑ $a^{2}$ - $\frac{ Summtion a^{2} }{n}$

$S_{aa}$ = 7522.8571

$S_{bb}$ = ∑ $b^{2}$ - $\frac{ Summtion b^{2} }{n}$

$S_{bb}$ = 47.1943

$S_{ab}$ = ∑ $ab^{}$ - $\frac{ Summtion a x Summation b^{} }{n}$

$S_{ab}$ = -76.8286

Now the slope of the required regression equation is:

Slope = $S_{ab}$ / $S_{aa}$ = -76.8286/7522.8571 = -0.010

And the intercept of the required regression equation:

intercept = $\frac{1}{n}$ x (∑b - slope x ∑a) = 5.064

So, the regression equation will be:

y = intercept + slope x

y = 5.064 - 0.010x

Here, in this question x = 33

y = 5.064 - 0.010 (33)

y = 4.734 million views

7 0

2 years ago

PLEASE HELP I DONT UNDERSTAND 40 POINTS

fomenos

Answer:

a. reflection over y axis, then reflection over x-axis

b. xy=qh, xz=qj, yz=jh

c.Both triangles are congruent because all of the sides are congruent

Step-by-step explanation:

8 0

3 years ago

Is 5/16 needle length smaller than 1/4?

yarga [219]

No they are the same size because if you convert 1/4 into /16 it equals 5/16.

8 0

3 years ago

Read 2 more answers

Brainliest for whoever gets this right!

My name is Ann [436]

Answer:

$x=\frac{(a^2+ab)}{a-b}$

Step-by-step explanation:

So we want to make x the subject of the formula:

$a(x-b)=a^2+bx$

First, distribute the left side:

$a(x)-a(b)=a^2+bx\\ax-ab=a^2+bx$

Combine all the terms with x with it on one side. To do this, first subtract bx from both sides. The right side cancels:

$(ax-ab)-bx=(a^2+bx)-bx\\ax-ab-bx=a^2$

Remove the -ab from the left. Add ab to both sides. The left side cancels:

$(ax-ab-bx)+ab=a^2+ab\\ax-bx=a^2+ab$

Now, distribute out the x from the left side:

$ax-bx=a^2+ab\\x(a-b)=a^2+ab$

Divide both sides by (a-b). The left side cancels:

$\frac{(x(a-b))}{a-b}=\frac{(a^2+ab)}{a-b} \\x=\frac{(a^2+ab)}{a-b}$

Therefore:

$x=\frac{(a^2+ab)}{a-b}$

5 0

3 years ago

Read 2 more answers