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lidiya [134]
3 years ago
7

Simplify the algebraic expression 7x^2 + 6x - 9x - 6x^2 + 15

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
5 0

Answer: x^2-3x+15

Step-by-step explanation:

Combine the like terms.

x^2 -3x+15

babunello [35]3 years ago
5 0

Answer:

x2 – 3x + 15 is the correct answer.

Step-by-step explanation:

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Simplify.
elena55 [62]

\dfrac{4}{10}-\dfrac{2}{15}=\dfrac{4\cdot 15-10\cdot 2}{10\cdot 15}\\\\=\dfrac{40}{150}=\dfrac{4}{15}

The correct choice appears to be ...

... A) 4/15

7 0
3 years ago
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The circle below is centred at point (2,-1) and has a radius of length 3 what is its equation ?
NeTakaya

Answer:

Option C

Step-by-step explanation:

The standard form of equation of a cirle is:

(x-h)^2+ (y-k)^2=r^2

In the given question as the point is given and the radius of circle is given:

So,

(h,k)=(2,-1)

and

r=3

Here,

h=2

k= -1

Putting the values of h,k and r in standard form

(x-2)^2+ (y-(-1))^2=(3)^2

(x-2)^2+ (y+1)^2=(3)^2

So the equation of circle is:

(x-2)^2+ (y+1)^2=9(3)^2

Option C is the correct answer ..

7 0
3 years ago
HELP!!!!!
antoniya [11.8K]

Answer: 82°

Step-by-step explanation:

<CDE = far arc - near arc / 2

i.e

<CDE = arcCBE - arcCE / 2

arcCE = 98°

arcCBE = 360° - 98° = 262°

<CDE = 262° - 98° / 2

<CDE = 164 / 2

<CDE = 82°

Therefore the measure of < CDE is 82°

8 0
3 years ago
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The perimeter of a square is directly proportional to the length of one of its sides. The perimeter is 28 when the length of a s
telo118 [61]

Step-by-step explanation:

check the pic

answer is 4

4 0
3 years ago
7ft = __ inches. Show work
Harrizon [31]

Answer:

Step-by-step explanation:

12 inches is in a foot

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2 x 7= 14

70+14=84

6 0
2 years ago
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