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Orlov [11]
3 years ago
15

Solve the problem please

Mathematics
1 answer:
Molodets [167]3 years ago
4 0

Answer:

x = 9±sqrt(7)

Step-by-step explanation:

3(x-9)^2 =21

Divide each side by 3

3/3(x-9)^2 =21/3

(x-9)^2 =7

Take the square root of each side

sqrt((x-9)^2) =±sqrt(7)

x-9 =±sqrt(7)

Add 9 to each side

x = 9±sqrt(7)

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Answer:

Solution given:

for second

we have

f(x)=x²-9x-36

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when

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y=-36

when

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0=x²-9x-36

x²-12x+3x-36=0

x(x-12)+3(x-12)=0

(x-12)(x+3)=0

either

x=12

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So,

x and y intercepts are (-3,0)(12,0) and 0,-36)

7 0
3 years ago
5, 10.5, 22.05, 46.305, If it is a geometric sequence, choose the common ratio. If it is not a geometric sequence, choose "not g
kifflom [539]

Answer:

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by  

2.1

gives the next term. In other words,  

a

n

=

a

1

⋅

r

n

−

1

.

Geometric Sequence:  

r

=

2.1

This is the form of a geometric sequence.

a

n

=

a

1

r

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1

Substitute in the values of  

a

1

=

5

and  

r

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.

a

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=

(

5

)

⋅

(

2.1

)

n

−

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Remove parentheses around  

2.1

.

a

n

=

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⋅

2.1

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Step-by-step explanation:


8 0
3 years ago
Please help quick!!
luda_lava [24]
C
6x^2-13X-5=0
(3X+1)(2X-5)
3x-1=0
X=1/3. 2x-5=0. X= 5/2
7 0
3 years ago
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babunello [35]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Look at the figure rectangle PQRS, find m angel P
Aliun [14]
144 degrees, q=s, so 3a=4a-12. a=12, and 12*12= 144
5 0
3 years ago
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