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Ipatiy [6.2K]
3 years ago
11

PLEASE HELP! Will get brainiest!!

Mathematics
1 answer:
Tcecarenko [31]3 years ago
3 0
I'll help with a few.

3. -3x^3 - 9x^2 + 3x
Solve: 
= (-3x)(x^2 + 3x + -1)
= (-3x)(x^2)+(-3x)(3x)+(-3x)(-1)
= -3x^3 - 9x^2 + 3x

7. (m - 2) (m + 11)

8. (t - 2) (5t + 9)

9. (5x + 3) (5x - 3)

10. (3t + 2)^2

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*URGENT 20 POINTS*
tia_tia [17]

Answer:

13.3787 m

Step-by-step explanation:

A = 3 × ( 2 + √3 ) × s2
If a is 2004 just do the reverse order and u get the answer

6 0
2 years ago
What slope would make the lines<br> parallel?<br> y = 1/2x - 1<br> y = / x + 2
gizmo_the_mogwai [7]
If an equation has the same slope it will always be parallel so which y=1/2x-1 then y=1/2x+2
7 0
3 years ago
Please help with this Geometry question. I just need help with the first question.
nignag [31]

Answer:

ST ≈ 5.21 cm

Step-by-step explanation:

ST = √(9² + 11²) - 9 = 5.212670403551895496...

8 0
3 years ago
Square had a radius of 5 square root 2 find the apothem
Karo-lina-s [1.5K]

Answer:

Apothem = 5 inches

(circum)radius = 5*sqrt(2) inches

Step-by-step explanation:

6 0
3 years ago
Over the last 3  evenings, Keisha received a total of 81  phone calls at the call center. The first evening, she received 6  few
tensa zangetsu [6.8K]

Answer:

First: 15

Second: 21

Third: 45

Step-by-step explanation:

In order to create the equation we need to represent the evenings with an alebraic term, in thsi case we are going to represent the second evening with an X

Second evening:x

The first night she got 6 fewer calls than the second: Second-6=x-6

The third night she received 3 times the first: 3(first night)=3(x-6)

The equation is First Night plus second night plus third night equals 81.

First+second+third=81\\x+(x-7)+3(x-6)=81\\x+x-7+3x-18=81\\5x=81+21+6\\5x=105\\x=\frac{105}{5} \\x=21

So the first evening he received 15 calls, the second he received 21 and the third one he received 45.

8 0
3 years ago
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