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lions [1.4K]
3 years ago
5

I'm confused on 8 ;-;​

Mathematics
1 answer:
Simora [160]3 years ago
4 0

a) \:  \frac{2 {y}^{2}  + 4.2y}{2y}  =  \frac{2y(y + 2.1)}{2y}  = y + 2.1 \\ b) \:  \frac{12 {m}^{2} - 6.2m + 24 }{2}  =  \frac{2(6 {m}^{2}  - 3.1m + 12)}{2} = 6 {m}^{2}  - 3.1m + 12 \\ c) \:  \frac{ - 18 {y}^{2}  - 6y}{ - 6y}  =  \frac{ - 6y(3y + 1)}{ - 6y}  = 3y + 1 \\ d) \:  \frac{3cv - 2.7c}{3c}  =  \frac{3c(v - 0.9)}{3c}  = v - 0.9

You might be interested in
Divide<br><br> -5/9 by 5/7 :<br><br> a)-7/9<br> b)-9/7<br> c)7/9<br> d)9/7
Reil [10]

Answer:

a

Step-by-step explanation:

-5/9 ÷ 5/7

= -5/9 × 7/5

= -7/9

The answer should be a

4 0
3 years ago
Need help As soon as possible!!
emmasim [6.3K]
I think the fourth option is the answer. It wi give you the Side angle side postulate.
4 0
3 years ago
The population of a city is expected to decrease by 6% next year. If x represents the current population, write an expression th
Kaylis [27]

Given:

Current population = x

The population of a city is expected to decrease by 6% next year.

To find:

The expression that represents the expected population next year. ​

Solution:

We have,

Current population = x

Decrease rate = 6%.

Expected population next year = Current population - 6% of Current population

                                                    =x-\dfrac{6}{100}x

                                                    =x-0.06x

                                                    =0.94x

Therefore, the expression for the expected population next year is 0.94x.

4 0
3 years ago
-5(6y + 4) + 25 = 15(2y + 5) + 73
Nataly_w [17]

Answer:

y = - 143/60 = -2 23/60

Step-by-step explanation:

5 0
2 years ago
PLEASE HELP Write an equation with the smallest possible degree for the function graphed attached.
arlik [135]

Answer:

Below

Step-by-step explanation:

First we can go ahead and create a general equation for this polynomial

Here are our roots :

     x1 = - 3

     x2 = -1

     x3 = 1

Now because this function extends from quadrant 4 to 3, we know that this has been reflected in the x-axis :

     f(x) = - ( x + 3 ) ( x + 1 ) ( x - 1 )

However if we look closely you can see that the graph appears to "bounce" off certain roots. In this case it bounces off x = 1. This means that this root is an order of 2. It also has a weird looking curve on x = - 3 which means that this root is an order of 3.

Our general equation will look like this :

     f(x) = - ( x + 3 )^3 ( x - 1 )^2 ( x + 1 )

Now we need to sub in any point on the graph to solve for the <em>a </em>value. I'm just going to arbitrarily pick the y-intercept at ( 0 , -3 )

     - 3 = - a ( 0 + 3 )^3 ( 0 - 1 )^2 ( 0 + 1 )

     - 3 = - a (3)^3 (-1)^2 (1)

     - 3 = - a (27)(1)(1)

     - 3 = - a27

     1/9 = a

Here is our FINAL equation :

     f(x) = - 1/9 ( x + 3 )^3 ( x - 1 )^2 ( x + 1 )

Hope this helps! Best of luck <3

I would really appreciate a brainliest if possible :)

8 0
3 years ago
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