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Elenna [48]
3 years ago
12

What is the sum of 8a 7+ 5b2 – 2a2 and 7b2 + 66_ 20a + 3?

Mathematics
1 answer:
barxatty [35]3 years ago
5 0

Answer:

Step-by-step explanation:

7+5b²-2a²+7b²+66-20a-3

first collect like terms

5b²+7b²-2a²-20a+7-3

12b²-2a²-20a+4

hope it's helpful

THANK YOU.

You might be interested in
The lesson is 19.2 Angles in inscribed Quadrilaterals
alexdok [17]

Answer:

m<R=44.9,m<S=56.9,m<T=44.9,m<U= 32.9.

Step-by-step explanation:

When two chords are equal then the measure of the arcs are equal.

Chord RU= Chord UT

Or , m arc RU= m arc UT,

3z-4=x+2z+7   Or             z=x+11

Chord RS=Chord ST ,

m arc RS=m arc ST=3x+5

Sum of m arc in a circle =360 degrees.

Or ,

3x+5+3x+5+3z-4+x+2z+7=360

7x+5z+13=360

Substituting z=x+11

7x+5(x+11)+13=360

7x+5x+55+13=360

12x+68=360

12x=292,x=24.3

z=x+11=11+24.3=34.3

m arc RU=marc UT= 3z-4=3(24.3)-4=69

m arc RS =marc ST= 3x+5=3(24..3)+5=77.9

m<R= (marc UT+ m  arc ST)÷2

m<R=(69+77.9)÷2=73.45

m<S= (m arc RU+m arc UT)÷2

m<S= (69+69)÷2=69

m<T=(m arc RU+m arc RS)÷2=73.45

m<U=(m arc RS+m arc m arc ST)÷2=77.9








4 0
3 years ago
What's 2.5 divided by 5
USPshnik [31]
Your answer would be 0.5 ;) Hope this helps
3 0
3 years ago
Solve the equation. 5x+8-3x=-10
Crank

Answer:

This: Im sorry but, I can't type it all, I just looked up some help.

Step-by-step explanation:

You can rewrite the equation as

5

x

−

3

x

+

8

=

−

10

Then

5

x

−

3

x

=

2

x

So

2

x

+

8

=

−

10

Then, to move the whole numbers to one side, you subtract

8

from both sides

2

x

=

−

18

To get rid of the

2

in front of the

x

, divide both sides by

2

x

=

−

9

6 0
3 years ago
Read 2 more answers
Which of the following integers is a solution to the inequality below?
natta225 [31]
I am not sure, but I checked my answer and I am right. Hope this helps, thank you :) !!

7 0
3 years ago
PLEASE HELP I NEED A GOOD GRADE ON THIS
VladimirAG [237]

Answer:

B = 1/243

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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