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cestrela7 [59]
2 years ago
9

Simplify the expression 3(9+4x−5). ill give brainlist

Mathematics
1 answer:
Mazyrski [523]2 years ago
6 0
12x+12 step by step below

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The sum of the first 15 terms of a geometric sequence with 7 as the first term and a common ratio of -3 is __________.
Andre45 [30]

Step-by-step explanation:

the formula for the sum of the first n terms of a geometric sequence is

Sn = s1(1 - r^n)/(1 - r)

with r being the common ratio and s1 is the first term.

so,

S15 = 7×(1 - (-3)¹⁵)/(1 - -3) = 7×(1 - -14,348,907)/4 =

= 7×14,348,908/4 = 7×3,587,227 = 25,110,589

4 0
2 years ago
-7-(-4)= helpppppp pleaseeeee
ikadub [295]

Answer:

-3

Step-by-step explanation:

-7 + 4 = -3

7 0
3 years ago
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On Monday Luke’s business lost $15. on Tuesday it made $8 .on Wednesday it broke even what is the total profit or loss during th
Andreas93 [3]

Answer:

He lost 7 dollars

Step-by-step explanation:

4 0
3 years ago
15. Simplify sin(90° - O) cos 0 - sin(180° +0) sin e.​
dalvyx [7]

Answer:  cos²(θ) + sin(θ)sin(e)

<u>Step-by-step explanation:</u>

sin (90° - θ)cos(Ф) - sin(180° + θ) sin(e)

Note the following identities:

sin (90° - θ) = cos(x)

sin (180° + θ) = -sin(x)

Substitute those identities into the expression:

   cos(x)cos(x)  -  -sin(x)sin(e)

=  cos²(x) + sin(x)sin(e)

4 0
2 years ago
Amy can run the 150 meter dash in 50 seconds. john can run 1200 meters in 400 seconds. who runs faster per second?
Sati [7]

Answer:

Amy

Step-by-step explanation:

amy completed a longer distance in a shorter amount of time

rather than john completed a shorter distance in a longer time

5 0
3 years ago
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