15 points for someone who can answer & explain this to me thanks

15 Points For Someone Who Can Answer & Explain This To Me Thanks

Answers

Answer 1

Answer:

see explanation

Step-by-step explanation:

Given

[tex]\frac{9}{a^2+9a+20}[/tex] , [tex]\frac{7a}{a^2+11a+28}[/tex]

Factor the denominators of both fractions

[tex]\frac{9}{(a+4)(a+5)}[/tex] , [tex]\frac{7a}{(a+4)(a+7)}[/tex]

The lowest common denominator of both fractions is (a + 4)(a + 5)(a + 7)

Multiply numerator/denominator of first fraction by (a + 7)

Multiply numerator/denominator of second fraction by (a + 5 )

[tex]\frac{9(a+7)}{(a+4)(a+5)(a+7)}[/tex] , [tex]\frac{7a(a+5)}{(a+4)(a+5)(a+7)}[/tex] , then

[tex]\frac{9a+63}{(a+4)(a+5)(a+7)}[/tex] , [tex]\frac{7a^2+35a}{(a+4)(a+5)(a+7)}[/tex]


Related Questions

Answer both question

Answers

Answer:

5.)

15.36+x=32.11

15.36+x-15.36=32.11-15.36

x=32.11-15.36

x=16.75

6.)

-2(a-3b+c)

-2a+6b-2c

7.)

3a+15y-5a=-a+2(3-a)

-2a+15y= -a+6-2a

-2a+15y=-3a+6

-2a+15y+2a=-3a+6+2a

15y=-a+6

15y/15=-a+6/15

y=-a+6/15

I hope this is good enough:

how to find the factors of 63​

Answers

The factors are basically the numbers that you can multiply to get the number.   For example, 9 and 7 multiplied give you 63, 3 and 21 also give 63, so those are factors of 63

Answer:

63 is a composite number. 63 = 1 x 63, 3 x 21, or 7 x 9. Factors of 63: 1, 3, 7, 9, 21, 63.

Step-by-step explanation:

What is 35a + 14 = 1

Answers

Answer:

a = -13/35

Step-by-step explanation:

35a + 14 = 1

(given)

_________

35a + 14 = 1

- 14 -14

(subtraction property of equality)

(subtract 14 from both sides to isolate the 35a term)

_________

35a = -13

÷35 ÷35

(division property of equality)

(divide by 35 on both sides to remove the coefficient of 35 in 35a)

_________

a = -13/35

35a+14=1

35a+14 - 14 = 1 - 14

35a= -13

35a= -13

35a = -13

35       35

a= -13/35

At a middle school, 20% of the students are in 6th grade. There are 1,300 students at the middle school. How many students are in 6th grade?

Answers

Answer:

260 students

Step-by-step explanation:

20 percent of 1,300 is equal to 260.

1,300 divider by 20 equals 65, so 65.

Find the slope of the line that passes through (80, 300) and (70, 500).

Answers

Answer:

m = -20

Step-by-step explanation:

20 points and brainliest answer. Don’t give wrong answers. :)

Answers

Answer:

i is d i think so

Step-by-step explanation:

Answer:

it is A area of trapezoid = 1/2 × h( base1+base2) so it is 1/2× 8×(13+19)

last one ten i need help getting 800 points to have 800/10,000 points so yall can get 200 points to level up bros?

Answers

Answer:

what????????????????????????????????????

Answer:

this isnt a question

Step-by-step explanation:


Plz I need this thank you this is for 100 points luv u

Answers

Answer:

a. 120

b. -120

c. -120

d. -120

e. 120

Step-by-step explanation:

The amount of - will influence whether the value is positive or negative. Odd number of - is always negative. Even number of - is always positive. Hope this helped :)

scientist finds that for every in of rainfall at a lake, the level of the
water in the lakeries 0.6 cm
By how many centimeters will the water in the lake rise after I in of rainfall?

Answers

Answer:

0.8 cm

Step-by-step explanation:

I divided 0.6 by 3 and then multiplied by 4 because 0.6 is 3/4 of the portion and we need the other 1/4.

Hello please help me​

Answers

Answer:

8x - 15

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Combining like terms

Step-by-step explanation:

Step 1: Define expression

5x + 3(x - 5)

Step 2: Simplify

Distribute 3:                    5x + 3x - 15Combine like terms:       8x - 15

Given the following linear equation state the slope and the y-intercept.
y = 2x - 3
m =
b =

Answers

M= 2/1 slope , y intercept b= -3
M= 2

B= -3

I’m pretty sure

Trapezoid ABCD has the following coordinates-A (2, 8), B (6, 8), C (8, 3), and D (1, 3). What are the coordinates of trapezoid A'B'C'D' after a translation of 3 units right and 4 units down?

Answers

Answer: A' ( -1,4) , B' (-4,4), C'(  -5 ,-1), D'( -1,-5)

Im not 100% sure its correct, its hard without an image or a picture of the problem

Step-by-step explanation:

I need help on this problem ​

Answers

the answer is y=3/2x+3

to figure it out:
1. you need to first find the slope of the two points.
3-0/0-(-2)
2. then put them into slope intercept form: y=mx+b. m being your slope and b being your y-intercept.

What is a variables

Answers

Answer:

A variable is a special type of amount or quantity with an unknown value. The opposite of a variable (that is, a known value) is called a constant.          

Step-by-step explanation:

can i have brinlest plzz

A scale model of a human heart is 190 Inches long. The scale is 34 to 1. How many Inches long is the actual
heart? Round your answer to the nearest whole number.

Answers

Answer:

6 inches long

Step-by-step explanation:

190/x = 34/1

34x = 190

x= 5.588235294

rounded to the nearest whole number is 6

The thanksgiving turkey directions say you need to cook the turkey for 60 minutes for every 4 pounds of turkey. Your mom bought a 25 pound turkey. How many minutes should she cook it for?

Answers

Answer:

Either 6.25 Minutes Or 15 Minutes Or If You Are Multilpyling It Would Be 245 Or 1500 Or 100

Step-by-step explanation:

Just Divide It And Then You Will Get The Answer

Hope My Calculations Are Right!  ;)

Answer:

375

Step-by-step explanation:

That's gonna take 375 minutes:

60/4 = 15

So 15 minutes for each pound, 25*15 = 375

2 + 9m >-25 and -9m + 10 > 28​

Answers

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[tex]2 + 9m > - 25[/tex]

Subtract sides 2

[tex] - 2 + 2 + 9m > - 2 - 25[/tex]

[tex]9m > - 27[/tex]

Divide sides by 9

[tex] \frac{9m}{9} > \frac{ - 27}{9} \\ [/tex]

[tex]m > - 3[/tex]

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[tex] - 9m + 10 > 28[/tex]

[tex]28 < - 9m + 10[/tex]

Add sides 9m

[tex]9m + 28 < 9m - 9m + 10[/tex]

[tex]9m + 28 < 10[/tex]

Subtract sides 28

[tex]9m + 28 - 28 < 10 - 28[/tex]

[tex]9m < - 18[/tex]

Divide sides by 9

[tex] \frac{9m}{9} < \frac{ - 18}{9} \\ [/tex]

[tex]m < - 2[/tex]

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so my brother is seriously struggling with these every day and he is really sad right now it would mean a lot to me if you'd answer these 2 questions :)

1. csc2(x) - 2csc(x)cot(x) + cot2(x) = tan2 (x/2)

2. [cos cos (x) cos(y)] [tan tan (x) + tan tan(y)] = sin(x + y)

Answers

Answer:

here you go!

Step-by-step explanation:

Working with the left hand side

( 1 + cos x ) + ( 1 − cos x ) ( 1 − cos x ) ( 1 + cos x  1 + cos x + 1 − cos x 1 − cos 2 x  2 sin 2 x  2 csc 2 x

which is equal to the right hand side

By using  trigonometric identities both the questions are proved LHS = RHS. 1. csc2(x) - 2csc(x)cot(x) + cot2(x) = tan2 (x/2). 2. [cos (x) cos(y)] [tan tan (x) + tan(y)] = sin(x + y).

What are trigonometric identities?

Trigonometric identities are the functions that include trigonometric functions such as sine, cosine, tangents, secant, and, cot.

1. csc2(x) - 2csc(x)cot(x) + cot2(x) = tan2 (x/2)

Proof; LHS

[tex]csc^2(x) - 2csc(x)cot(x) + cot^2(x)\\\\(cscx - cot x)^2\\\\(\dfrac{1}{sin x} - \dfrac{cosx}{sin x} )^2\\\\\\(\dfrac{1-cosx}{sin x})^2\\ \\(tan)^2\dfrac{x}{2}\\[/tex]

Thus, LHS = RHS

2. [cos cos (x) cos(y)] [tan tan (x) + tan tan(y)] = sin(x + y)

Proof; LHS

[tex][cos (x) cos(y)] [tan (x) + tan(y)]\\\\ (cos (x) cos(y)) (\dfrac{sinx}{cos x} + \dfrac{siny}{cos y} )\\\\sin x \; cos y +sin y\; cos x\\\\sin (x+ y)[/tex]

Thus, LHS = RHS

Learn more about trigonometric;

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Divide. Write your answer as a fraction in simplest form.

9/10÷(−6/5)=

Answers

Answer:

[tex]-\frac{3}{4}[/tex]

Step-by-step explanation:

1.[tex]\frac{9}{10}[/tex]×[tex]-\frac{5}{6}[/tex]

2.[tex]-\frac{3}{4}[/tex]

What is the discriminant of 9x2 + 2 = 10x? –356 –172 28 72

Answers

Answer: C 28

The above person is correct

Step-by-step explanation:

Which quadrant will be completely shaded by the graph of the inequality y < 3x ?
A Quadrant !
B. Quadrant 11
C. Quadrant III
D. Quadrant IV

Answers

Answer:

ill say c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

5x5 to the power of two

Answers

Answer: 125

Step-by-step explanation:

Answer: 25

Step-by-step explanation:

Express (x – 3)2 as a trinomial in standard form.

Answers

Answer:

x^2 - 6x + 9

Step-by-step explanation:

Shirley wants to buy a skateboard for $64. She has $98 in her account. She spent $10.85 to buy stationary. She also wants to buy some cookies for $1.65 each. What is the maximum number of cookies, n, that Shirley can buy so that she has enough money left to buy the skateboard?

n ≥ 14
n ≤ 16
n ≤ 14
n ≥ 16

Answers

Answer:

14 cookies

Step-by-step explanation:

Answer:

Step-by-step explanation:

so first you have to subtract 64 dollars from your balance so $98-$64=$34.

Next you have to subtract $10.85 from your new balance so it would be $34-$10.85=$23.15

Last you have to divide 23.15 by 1.65 because you have to see how many cookies you can afford, so it would be 23.15 divided by 1.65 and the answer is 14. so you can afford 14 cookies

Which expression is a perfect cube?
O
0 -1.452m 18 ,15,22
-1,331m18,15 p21
1,331m18,15 p22
O 1.452m18
1.452m8n15,921

Answers

Answer:

The answer is b

Step-by-step explanation:

I just took the quiz

Bill, Lil, and Phil are going to equally share a bag of snacks for the weekend that holds 2 1/4 lb. How much will each receive?

Answers

Answer:

Each will receive [tex]\frac{3}{4}[/tex]lbs of snacks.

Step-by-step explanation:

We know Bill, Lil, and Phil are sharing one bag of snacks that is 2[tex]\frac{1}{4}[/tex]lbs. Therefore, we must divide the bag of snacks into three.

To do this, divide 2[tex]\frac{1}{4}[/tex]÷3

= 0.75

which is [tex]\frac{3}{4}[/tex] in fraction form.

Is this true or false

Answers

Answer:

true

Step-by-step explanation:

Answer:

True.

Step-by-step explanation:

look at the line, and is it a function or not?

Which percent is equivalent to 0.02?

Answers

Answer:

2 OR 20

Step-by-step explanation:

Write an equation in the form y=kx for the relationship shown in the graph.​

Answers

Answer:

y=6.5x

Step-by-step explanation:

Choose a point on the graph and tell what the point represents.

The point (2, 13) represents the height of the balloon after 2 seconds.

What is the constant of proportionality?

Because  

height

time

 =  

13

2

 = 6.5, the constant of proportionality is 6.5.

Write an equation in the form y = kx.

y = 6.5x

The equation is y = 6.5x.

What is equation?

An equation is a mathematical expression that contains an equals symbol. Equations often contain algebra.

We can consider the point (24, 6)

To write the value of K we can write

=24/6

= 4

Hence, the equation is y=4x.

Learn more about equation here:

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urgent! i need an explanation please *picture included* also can someone make sure the second one is b or not?

Answers

Answer:

For the first one it is D.

Step-by-step explanation:

I added 84.6 and 30.4 which gives me 115. I then added 66 to get 181, triangles angles only add up to 180 degrees, therefore they are not similar.

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