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barxatty [35]
3 years ago
9

I understand the switching of positive and negative signs but I don’t understand how to get to the next step which is the answer

. It’s factoring.

Mathematics
1 answer:
Finger [1]3 years ago
6 0
2ab - 3a = a.(2b-3)

now the same thing

let's say n=1

a.(2b-3) + n.(2b-3) = (2b-3).(a+n)

Understood?

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Help pls so people say it’s none of these but idk I am confused.
crimeas [40]

Answer:

Volume = \pi r^2 h

2512 = 3.14 × r^2 × 8

r^2 = \displaystyle\frac{314}{3.14}

r^2 = 100

r = 10 \ cm

Diameter = 2r = 20 \ cm

Dont get confused try to understand : )

8 0
3 years ago
Read 2 more answers
Please help stuck on question
vazorg [7]

Answer:

Suppose we have a polynomial of degree N with a leading coefficient A and roots {x₁, x₂, ..., xₙ}

We can write this polynomial as:

P(x) = A*(x - x₁)*(x - x₂)*...*(x - xₙ)

such that the terms:

(x - x₁), (x - x₂), etc...

are called the factors.

In this case, we know that the roots OF THE FACTORS

are:

(x = - 2)

(x = - (1 + √5))

(x = + 3i)

If the root of the polynomial is  x = -2, then the factor should be:

(x + 2)

which is zero when we evaluate x in -2

Then the correct option is the first one.

5 0
2 years ago
On the planet Joop, there are 6 gespils to every 14 vreels. If farmer
zzz [600]

Answer:

51 vreels

Step-by-step explanation:

Step 1: Given data

Ratio of gespils to vreels on the planet Joop: 6:14

Step 2: Calculate the number of gespils per 120 vreels

Elentine has 120 vreels on her rew farm. If there are 6 gespils every 14 vreels, the number of gespils is:

120 vreels × (6 gespils/14 vreels) ≈ 51 vreels

3 0
3 years ago
A train left for Miami, and 6 hours later, a car traveling 79 mph tried catching up to the train. After 7 hours, the car caught
nikdorinn [45]

Answer: 121 mph

Step-by-step explanation: First, I did 6 x 7, and I got 42. Then I did 42 + 79, and I got 121 mph as my answer.

5 0
3 years ago
Hattempt last question below, or select another question rest tenth of a percent Out of 270 racers who wanted the then, 243 comp
coldgirl [10]

Answer:

10%

Step-by-step explanation:

Given:

Total number of racers = 270

Number of racers completed the race = 243

Number of racers gave up = 20

Now,

The number of racers who did not complete the race

= Total number of racers - Number of racers completed the race

= 270 - 243

= 27

Therefore,

The percentage of racers who did not complete the race

= \frac{\textup{number of racers who did not complete}}{\textup{Total number of racers}}\times100\%

= \frac{\textup{27}}{\textup{270}}\times100\%

= 10%

8 0
3 years ago
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