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Luda [366]
3 years ago
15

Take -4 + 3a 2 from 7a - a 2.

Mathematics
1 answer:
Ganezh [65]3 years ago
3 0

Answer:

bueno...

Step-by-step explanation:

tu podrias multiplicar -4 x -1 para que te de 4 y asi  tu sumas 4 + 3a que te da 7a y el 2 que eso te da 7a +2

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A marble is drawn at random from the bag shown below. The bag contains 3 green, 4 yellow, 5 blue, and 8 pink marbles.
Amanda [17]
Well sense it more pink it’s obviously gonna be a pink marble wit draw from it so p is possibly 23%
6 0
3 years ago
While attending a school carnival, you estimate the ratio of children to adults as If there are 180 people at the carnival, abou
Karolina [17]

Answer:

180-n_c

Step-by-step explanation:

Given that the ratio of children to adults is 2:1.

Let n_c and n_a be the number of children and adults in the school carnival.

So, \frac {n_c}{n_a} = \frac 2 1

\Rightarrow n_c = 2 n_a \cdots(i)

Given that the total number of peoples in the carnival =180

So, n_c + n_a = 180

\Rightarrow n_a = 180-n_c \cdots(ii)

Now, from equations (i) and (ii), we have

n_c = 2(180-n_c) \\\\\Rightarrow n_c = 360 -2 n_c \\\\\Rightarrow n_c +2n_c = 360 \\\\\Rightarrow 3 n_c = 360 \\\\\Rightarrow n_c = 360/3 = 120.

Hence, the number of children in attendance is 120.

5 0
3 years ago
A plumber chargers a fee of $75 plus $30 per hour on the job. Make a table of values for the total charge depending on the numbe
TEA [102]

Answer:

d

Step-by-step explanation:

It is going at a steady rate of 30$ an hour

6 0
3 years ago
A rectangular skate park is 60 yards long and 50 yards wide
lawyer [7]
It is unclear what you want to do, but in the case where they give you the length and the width, it is most likely they are asking for either area or perimeter. For Area, it is length times width.
A = l x w
A = 60 yards x 50 yards
A = 3000 square yards.
For Perimeter of the rectangle, it is 2 of the lengths plus 2 of the widths.
P = 2 ( 60 yards ) + 2 ( 50 yards )
P = 120 yards + 100 yards
P = 220 yards
I hope this helps :-)
4 0
4 years ago
solve each equation below. check for extraneous solutions. please help and show work because i have no idea how to do this
Naya [18.7K]
Hi Pls find attached file for both solutions

Hope i did not do any calculation mistake:)

4 0
4 years ago
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