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lara31 [8.8K]
3 years ago
10

I need to find the value of x!!!

Mathematics
1 answer:
DanielleElmas [232]3 years ago
8 0

Answer:

x = 27

Step-by-step explanation:

3x + x + 72 = 180

3x + x + 72 [-72] = 180 [-72]

4x = 27

4x [/4] = 180 / 4

x = 27

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Simplify using the vertical method. (3k + 4)(3k^2 – 5k – 3)
liubo4ka [24]

Answer:

9k^{3} -3k^{2}-29k-12

Step-by-step explanation:

Step 1: Expand by distributing sum groups.

3k(3k^{2} -5k-3)+4(3k^{2} -5k-3)

Step 2: Expand by distributing terms.

9k^{3} -15k^{2} -9k+4(3k^{2} -5k-3)

Step 3: Expand by distributing terms.

9k^{3}-15k^{2} -9k+12k^{2} -20k-12

Step 4: Collect like terms.

9k^{3}+(-15k^{2}  +12k^{2} )+(-9k-20k)-12

Step 5: Simplify.

9k^{3} -3k^{2}-29k-12

3 0
3 years ago
Can someone help me figure this out: Factor 12y^2-27? I keep getting the steps confused.
alukav5142 [94]
Factor out the gcf first.

3(4y^2-9)

The binomial inside is a perfect square so keep factoring.

3(2y+3)(2y-3)

The pair of binomials cannot be further factored so stop there.
8 0
3 years ago
Encuentre el valor de la variable en la siguiente ecuación<br><br> 4−x7=−8
melisa1 [442]

Answer:

x = 1.71428571429 (1.7)

Step-by-step explanation:

4 - 7x= -8

-4         -4

-7x = -12

/-7      /-7

x = 1.71428571429

x = 1.7

7 0
2 years ago
What is 20% of 25% of 4/5
krok68 [10]

Answer:0.04

Step-by-step explanation:

7 0
3 years ago
Its easy please ill give brainiest dont guess
valentina_108 [34]

Answer:

I don't know

Step-by-step explanation:

7 0
2 years ago
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