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Minchanka [31]
3 years ago
12

Evaluate x-2 for x = -3.

Mathematics
1 answer:
Katen [24]3 years ago
5 0
I think the answer is -3-2= -5
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Roger brought some sponges. The number of packages he bought was 14 less than the number of sponges per package. Roger bought 51
mihalych1998 [28]

Answer:

the number of sponges per package bought be 32.5

Step-by-step explanation:

Let us assume the number of sponges per package be x

So the number of packages he bought be x - 14

And, the overall he bought 51 sponges

So

the number of packages of sponges did roger buy is

x + x - 14 = 51

2x = 51 + 14

2x = 65

x = 32.5

So the number of sponges per package bought be 32.5

8 0
3 years ago
Factoring, Algebra<br> There are two questions :v
kykrilka [37]

Answer:

Step-by-step explanation:

One

v^2 - 16

This formation is called the difference of squares. That's because there are 2 squares v^2 and 16. The key to this question is the minus sign.

The square root of v^2 = v

The square root of 16 = 4

You get (v + 4)(v - 4)

Let's see what happens when you expand it.

  • v*v = v^2
  • v*(-4) = - 4v
  • v*(4) = 4v
  • 4*-4 = - 16

Look what happens when you add these 4 terms together.

  • v^2 - 4v + 4v - 16
  • v^2 - 16

is what is left. The two middle terms cancel out.

Two

This one is a perfect square

w^2 + 16w + 64

(w + 8)(w + 8)

Notice both factors are the same. You might wonder how I new that.

w^2 is a perfect square so take the square root.  ....   v      

64 is a perfect square so take the square root    .....    8

Now you have to work backwards to see if it is right.

  • w*w = w^2
  • w*8 = 8w
  • 8*w = 8w
  • 8^2 = 64

Adding you get w^2 + 16w + 64 which is what you started with.

6 0
3 years ago
Read 2 more answers
A team of.volunteers collected a total.cost of 5144 selling.t shirts was sold for$8 what was the total number of t shirts the vo
tigry1 [53]
5144/8=643 
643 shirts were sold
7 0
3 years ago
Can someone help me find the answer?
icang [17]

Answer:

a. x = 3/a

Step-by-step explanation:

Add all like terms on left hand side of the equation:

5 ax + 3 ax => 8 ax

Bring like term 4ax on left hand side

8ax - 4ax

=> 4ax

Therefore we get 4ax = 12

ax = 12/4

ax = 3

x = 3/a

6 0
3 years ago
Henry is building an in-ground pool at his house. He is doing most of the work for himself to save money. He rents a small backh
Anon25 [30]

Answer:

Henry rented the backhoe for three days

Step-by-step explanation:

It's simple. First, you suppose that the number of days he rented the backhoe is 'm'. Then you equate the bill to the amount that corresponds the number of rented days.

The bill came for 286.50$. That'd mean, m*95.50$ = 286.50$ => m = 286.50/95.50 = 3

4 0
2 years ago
Read 2 more answers
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